STERLING CHEMICALS HOLDINGS INC /TX/
10-Q, 1998-05-14
INDUSTRIAL ORGANIC CHEMICALS
Previous: FIDELITY ADVISOR SERIES II, 13F-E, 1998-05-14
Next: PHOENIX HOME LIFE VARIABLE UNIVERSAL LIFE ACCOUNT /CT/, 497J, 1998-05-14



<PAGE>   1
================================================================================
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q


[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED March 31, 1998

                                       OR

[ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM          TO

COMMISSION FILE NUMBER 1-10059

                        STERLING CHEMICALS HOLDINGS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

               DELAWARE                                76-0185186
      (STATE OR OTHER JURISDICTION                  (I.R.S. EMPLOYER
    OF INCORPORATION OR ORGANIZATION)              IDENTIFICATION NO.)

      1200 SMITH STREET, SUITE 1900                  (713) 650-3700
        HOUSTON, TEXAS 77002-4312            (REGISTRANT'S TELEPHONE NUMBER,
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)          INCLUDING AREA CODE)

        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE
    SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: COMMON STOCK,
                            PAR VALUE $.01 PER SHARE

COMMISSION FILE NUMBER 333-04343-01

                            STERLING CHEMICALS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

               DELAWARE                                76-0502785
      (STATE OR OTHER JURISDICTION                  (I.R.S. EMPLOYER
    OF INCORPORATION OR ORGANIZATION)              IDENTIFICATION NO.)

      1200 SMITH STREET, SUITE 1900                  (713) 650-3700
         HOUSTON, TEXAS 77002-4312           (REGISTRANT'S TELEPHONE NUMBER,
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)          INCLUDING AREA CODE)

        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE
        SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: NONE

        Sterling Chemicals, Inc. meets the conditions set forth in General
Instruction H(1)(a) and (b) of Form 10-Q, and is therefore filing this form with
the reduced disclosure format provided for by General Instruction H(2) of Form
10-Q.

                                   ----------

        Indicate by check mark whether each of the registrants (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes [X]   No [ ]

        As of April 30, 1998, Sterling Chemicals Holdings, Inc. had 12,395,330
shares of common stock outstanding. As of April 30, 1998, all outstanding equity
securities of Sterling Chemicals, Inc. were owned by Sterling Chemicals
Holdings, Inc.

================================================================================
<PAGE>   2

     This combined Form 10-Q is separately filed by Holdings and Chemicals (each
as defined herein). Information contained herein relating to Chemicals is filed
by Holdings and separately by Chemicals on its own behalf. Certain capitalized
terms used in this Form 10-Q are defined in the Notes to Condensed Consolidated
Financial Statements, included herein.


PART I.--FINANCIAL INFORMATION

ITEM 1.--FINANCIAL STATEMENTS







                                       2
<PAGE>   3
                        STERLING CHEMICALS HOLDINGS, INC.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                    (AMOUNTS IN THOUSANDS EXCEPT SHARE DATA)
                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                        MARCH 31,      SEPTEMBER 30,
                                                                           1998              1997
                                                                        ----------     -------------
<S>                                                                     <C>            <C>
ASSETS

Current assets:
    Cash and cash equivalents ...................................       $    8,841        $    7,958
    Accounts receivable .........................................          133,575           167,248
    Inventories .................................................          100,270            87,870
    Prepaid expenses ............................................            9,235            10,956
    Deferred income taxes .......................................           10,691            10,005
                                                                        ----------        ----------
        Total current assets ....................................          262,612           284,037
Property, plant and equipment, net ..............................          474,231           492,036
Other assets ....................................................           96,347           102,898
                                                                        ----------        ----------
       Total assets .............................................       $  833,190        $  878,971
                                                                        ==========        ==========
LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIENCY IN ASSETS)
Current liabilities:
    Accounts payable ............................................       $   68,334        $   80,658
    Accrued liabilities .........................................           79,123            77,565
    Current portion of long-term debt ...........................            5,634             5,710
                                                                        ----------        ----------
        Total current liabilities ...............................          153,091           163,933
Long-term debt ..................................................          884,784           876,281
Deferred income taxes ...........................................           24,895            36,038
Deferred credits and other liabilities ..........................           70,677            73,336
Common stock held by ESOP .......................................            5,938             7,688
Less: unearned compensation .....................................           (3,530)           (5,570)
Redeemable preferred stock ......................................           17,013            15,793
Commitments and contingencies
Stockholders' equity (deficiency in assets):
    Common stock, $.01 par value, 20,000,000 shares
       authorized, 11,942,000 shares issued and
       11,740,000 outstanding at March 31, 1998; and
       11,942,000 shares issued and 11,714,000 shares
       outstanding at September 30, 1997 ........................              120               120
   Additional paid-in capital ...................................         (541,929)         (542,485)
   Retained earnings ............................................          250,039           277,691
   Pension adjustment ...........................................              (31)              (31)
   Accumulated translation adjustment ...........................          (25,321)          (21,093)
   Deferred compensation ........................................             (136)             --
                                                                        ----------        ----------
                                                                          (317,258)         (285,798)
   Treasury stock, at cost, 202,000 shares at March 31,
      1998 and 228,000 shares at September 30, 1997 .............           (2,420)           (2,730)
                                                                        ----------        ----------
        Total stockholders' equity (deficiency in assets) .......         (319,678)         (288,528)
                                                                        ----------        ----------
           Total liabilities and stockholders' equity
              (deficiency in assets) ............................       $  833,190        $  878,971
                                                                        ==========        ==========
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       3
<PAGE>   4
                        STERLING CHEMICALS HOLDINGS, INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                      (IN THOUSANDS EXCEPT PER SHARE DATA)
                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                    THREE MONTHS ENDED            SIX MONTHS ENDED
                                                                         MARCH 31,                    MARCH 31,
                                                                 ------------------------      ------------------------
                                                                    1998          1997            1998           1997
                                                                 ---------      ---------      ---------      ---------
<S>                                                              <C>            <C>            <C>            <C>
Revenues ...................................................     $ 204,504      $ 239,763      $ 434,740      $ 426,689
Cost of goods sold .........................................       190,116        222,936        397,855        394,779
                                                                 ---------      ---------      ---------      ---------

Gross profit ...............................................        14,388         16,827         36,885         31,910
Selling, general, and administrative expenses ..............        11,964          7,223         23,680         13,349
Other  expense .............................................         2,940           --            2,940           --
Interest  and  debt  related  expenses,  net  of
   interest income .........................................        24,970         20,850         50,273         39,474
                                                                 ---------      ---------      ---------      ---------

Loss before income taxes ...................................       (25,486)       (11,246)       (40,008)       (20,913)
Benefit for income taxes ...................................        (9,198)        (3,435)       (13,575)        (5,904)
                                                                 ---------      ---------      ---------      ---------

Net loss ...................................................       (16,288)        (7,811)       (26,433)       (15,009)
Preferred stock dividend and accretion .....................           591            162          1,219            162
                                                                 ---------      ---------      ---------      ---------

Net loss attributable to common stockholders ...............     $ (16,879)     $  (7,973)     $ (27,652)     $ (15,171)
                                                                 =========      =========      =========      =========

Net loss per common share ..................................     $   (1.37)     $   (0.72)     $   (2.28)     $   (1.40)
                                                                 =========      =========      =========      =========

Weighted average shares outstanding ........................        11,984         11,118         11,918         10,860
                                                                 =========      =========      =========      =========
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.



                                       4
<PAGE>   5
                        STERLING CHEMICALS HOLDINGS, INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                                              SIX MONTHS ENDED
                                                                                 MARCH 31,
                                                                       ------------------------------
                                                                           1998             1997
                                                                       ------------      ------------
<S>                                                                    <C>                <C>
Cash flows from operating activities:

    Cash received from customers ...................................   $    497,231      $    441,473
    Miscellaneous cash receipts (payments) .........................           (795)            9,368
    Cash paid to suppliers and employees ...........................       (449,306)         (414,540)
    Interest paid ..................................................        (39,861)          (28,579)
    Interest received ..............................................            115               266
    Income tax refunds received ....................................          6,864             1,433
                                                                       ------------      ------------
Net cash provided by operating activities ..........................         14,248             9,421
                                                                       ------------      ------------
Cash flows from investing activities:
    Capital expenditures ...........................................        (13,303)          (25,154)
    Purchase of assets-acrylic fibers business .....................           --             (88,200)
    Proceeds-sale of assets ........................................           --                  16
                                                                       ------------      ------------
Net cash used in investing activities                                       (13,303)         (113,338)

Cash flows from financing activities:
    Proceeds from long-term debt ...................................         48,562           146,900
    Repayment of long-term debt ....................................        (48,508)          (50,072)
    Issuance of common stock .......................................           --              12,339
    Purchase of treasury stock .....................................            (99)             (613)
    Other ..........................................................             74            (3,889)
                                                                       ------------      ------------

Net cash provided by financing activities ..........................             29           104,665
                                                                       ------------      ------------
Effect of exchange rate on cash ....................................            (91)              (77)
                                                                       ------------      ------------

Net increase in cash and cash equivalents ..........................            883               671
Cash and cash equivalents--beginning of period .....................          7,958             5,609
                                                                       ------------      ------------
Cash and cash equivalents--end of period ...........................   $      8,841      $      6,280
                                                                       ============      ============
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       5
<PAGE>   6
                        STERLING CHEMICALS HOLDINGS, INC.
           CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)
                                 (IN THOUSANDS)
                                   (UNAUDITED)


                     RECONCILIATION OF NET LOSS TO NET CASH
                        PROVIDED BY OPERATING ACTIVITIES

<TABLE>
<CAPTION>
                                                                              SIX MONTHS ENDED
                                                                                 MARCH 31,
                                                                       ------------------------------
                                                                           1998             1997
                                                                       ------------      ------------
<S>                                                                    <C>                <C>
Net loss ........................................................      $    (26,433)     $    (15,009)

Adjustments to reconcile net loss to net cash provided
  by operating activities:

    Depreciation and amortization ...............................            28,014            22,973
    Debt fee amortization .......................................             2,198             2,191
    Loss on disposal of assets ..................................               256                 7
    Deferred tax (benefits) expense .............................           (10,496)            3,124
    Unearned compensation .......................................               923             1,067
    Discount note amortization ..................................             8,118             7,507

Change in:

    Accounts receivable .........................................            26,968           (30,299)
    Inventories .................................................           (12,658)            1,201
    Prepaid expenses ............................................             4,210            (6,241)
    Other assets ................................................               598            (7,317)
    Accounts payable ............................................            (8,740)            6,999
    Accrued liabilities .........................................             1,067             7,149
    Interest payable ............................................             3,378             6,783
    Taxes payable ...............................................            (3,089)           (1,234)
    Other liabilities ...........................................               (66)           10,520
                                                                       ------------      ------------
Net cash provided by operating activities .......................      $     14,248      $      9,421
                                                                       ============      ============
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       6
<PAGE>   7
                            STERLING CHEMICALS, INC.
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                        (IN THOUSANDS EXCEPT SHARE DATA)
                                   (UNAUDITED)


<TABLE>
<CAPTION>
                                                                                 MARCH 31,    SEPTEMBER 30,
                                                                                   1998           1997
                                                                                 ---------    -------------
<S>                                                                              <C>           <C>
ASSETS

Current assets:
    Cash and cash equivalents .............................................      $    8,793    $    7,958
    Accounts receivable ...................................................         135,038       167,898
    Inventories ...........................................................         100,270        87,870
    Prepaid expenses ......................................................           7,610        10,031
    Deferred income tax benefit ...........................................          10,691        10,005
                                                                                 ----------    ----------
       Total current assets ...............................................         262,402       283,762

Property, plant and equipment, net ........................................         474,231       492,036
Other assets ..............................................................          92,842        99,519
                                                                                 ----------    ----------
          Total assets ....................................................      $  829,475    $  875,317
                                                                                 ==========    ==========
LIABILITIES AND STOCKHOLDER'S EQUITY (DEFICIENCY IN ASSETS)
Current liabilities:
    Accounts payable ......................................................      $   68,334    $   80,658
    Accrued liabilities ...................................................          79,126        77,565
    Current portion of long-term debt .....................................           5,634         5,710
                                                                                 ----------    ----------
       Total current liabilities ..........................................         153,094       163,933

Long-term debt ............................................................         768,947       768,870
Deferred income tax liability .............................................          34,186        42,646
Deferred credits and other liabilities ....................................          70,677        73,337
Common stock held by ESOP .................................................           5,938         7,688
Less: unearned compensation ...............................................          (3,530)       (5,570)
Commitments and contingencies
Stockholder's equity (deficiency in assets):
    Common stock, $.01 par value ..........................................            --            --
    Additional paid-in capital ............................................        (139,230)     (139,786)
    Retained earnings (deficit) ...........................................         (35,119)      (14,677)
    Pension adjustment ....................................................             (31)          (31)
    Deferred compensation .................................................            (136)         --
    Accumulated translation adjustment ....................................         (25,321)      (21,093)
                                                                                 ----------    ----------
       Total stockholder's equity (deficiency in assets) ..................        (199,837)     (175,587)
                                                                                 ----------    ----------
          Total liabilities and stockholder's equity (deficiency
               in assets) .................................................      $  829,475    $  875,317
                                                                                 ==========    ==========
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       7
<PAGE>   8
                            STERLING CHEMICALS, INC.
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                 (IN THOUSANDS)
                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                   THREE MONTHS ENDED            SIX MONTHS ENDED
                                                                         MARCH 31,                    MARCH 31,
                                                                 ------------------------      ------------------------
                                                                    1998          1997           1998           1997
                                                                 ---------      ---------      --------      ---------
<S>                                                              <C>            <C>            <C>            <C>
Revenues ...................................................     $ 204,504      $ 239,763      $ 434,740      $ 426,689
Cost of goods sold .........................................       190,116        222,936        397,855        394,779
                                                                 ---------      ---------      ---------      ---------

Gross profit ...............................................        14,388         16,827         36,885         31,910
Selling, general and administrative expenses ...............        11,466          7,012         22,900         12,783
Other (income) expense .....................................         2,940           --            2,940           --
Interest and debt related expenses .........................        20,782         17,011         41,679         31,812
Interest income from parent ................................          --             --             --           (1,788)
                                                                 ---------      ---------      ---------      ---------

Loss before income taxes ...................................       (20,800)        (7,196)       (30,634)       (10,897)
Benefit for income taxes ...................................        (7,228)        (2,553)       (10,192)        (3,076)
                                                                 ---------      ---------      ---------      ---------
Net loss ...................................................     $ (13,572)     $  (4,643)     $ (20,442)     $  (7,821)
                                                                 =========      =========      =========      =========
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       8
<PAGE>   9
                            STERLING CHEMICALS, INC.

                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                                             SIX MONTHS ENDED
                                                                                 MARCH 31,
                                                                        ----------------------------
                                                                           1998              1997
                                                                        ----------        ----------
<S>                                                                     <C>               <C>
Cash flows from operating activities
     Cash received from customers ...............................       $  497,231        $  441,473
     Miscellaneous cash receipts (payments) .....................             (869)            9,412
     Cash paid to suppliers and employees .......................         (449,265)         (415,150)
     Interest paid ..............................................          (39,861)          (28,579)
     Interest received ..........................................              100               261
     Income tax refund received .................................            6,864             1,433
                                                                        ----------        ----------

Net cash provided by operating activities .......................           14,200             8,850
                                                                        ----------        ----------
Cash flows from existing activities:
     Capital expenditures .......................................          (13,303)          (25,154)
     Purchase of assets-acrylic fibers business .................             --             (88,200)
     Proceeds from sale of assets ...............................             --                  16
                                                                        ----------        ----------

Net cash used in investing activities ...........................          (13,303)         (113,338)

Cash flows from financing activities:
     Proceeds from long-term debt ...............................           48,361           146,900
     Repayment of long-term debt ................................          (47,202)          (50,072)
     Intercompany financing .....................................           (1,105)            3,000
     Contributions from parent ..................................             --               8,604
     Other ......................................................              (25)           (3,168)
                                                                        ----------        ----------
Net provided by financing activities ............................               29           105,264

Effect of exchange rate on cash .................................              (91)              (77)
                                                                        ----------        ----------
Net change in cash and cash equivalents .........................              835               699

Cash and cash equivalents - beginning of period .................            7,958             5,581
                                                                        ----------        ----------
Cash and cash equivalents - end of period .......................       $    8,793        $    6,280
                                                                        ==========        ==========
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       9
<PAGE>   10
                            STERLING CHEMICALS, INC.

           CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)
                                 (IN THOUSANDS)
                                   (UNAUDITED)


                     RECONCILIATION OF NET LOSS TO NET CASH
                        PROVIDED BY OPERATING ACTIVITIES


<TABLE>
<CAPTION>
                                                                              SIX MONTHS ENDED
                                                                                 MARCH 31,
                                                                       ------------------------------
                                                                           1998             1997
                                                                       ------------      ------------
<S>                                                                    <C>                <C>
Net loss ........................................................       $  (20,442)       $   (7,821)

Adjustments to reconcile net loss to net cash provided by
    operating activities:

    Depreciation and amortization ...............................           28,014            22,973
    Debt Fee Amortization .......................................            1,706             2,029
    Loss on disposal of assets ..................................              256                 7
    Deferred tax (benefit) expense ..............................           (7,813)            5,787
    Unearned compensation .......................................              923             1,067

Change in:

    Accounts receivable .........................................           26,930           (34,753)
    Inventories .................................................          (12,658)            1,201
    Prepaid expenses ............................................            4,910            (4,234)
    Other assets ................................................              562            (7,844)
    Accounts payable ............................................           (9,479)            7,361
    Accrued liabilities .........................................            1,067             7,063
    Interest payable ............................................            3,378             8,570
    Taxes payable ...............................................           (3,089)           (3,076)
    Other liabilities ...........................................              (65)           10,520
                                                                        ----------        ----------
Net cash provided by operating activities .......................       $   14,200        $    8,850
                                                                        ==========        ==========
</TABLE>

          The accompanying notes are an integral part of the condensed
                       consolidated financial statements.


                                       10
<PAGE>   11
                        STERLING CHEMICALS HOLDINGS, INC.
                            STERLING CHEMICALS, INC.

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


1.   BASIS OF PRESENTATION:

     In the opinion of management, the accompanying unaudited condensed
consolidated financial statements reflect all adjustments necessary to present
fairly the consolidated financial position of Sterling Chemicals Holdings, Inc.
("Holdings") and its subsidiaries (Holdings and its subsidiaries collectively,
the "Company") and Sterling Chemicals, Inc. and its subsidiaries (collectively,
"Chemicals") as of March 31, 1998 and their consolidated results of operations
and cash flows for the applicable three month and six month periods ended March
31, 1998 and 1997. All such adjustments are of a normal and recurring nature.
The results of operations for the periods presented are not necessarily
indicative of the results to be expected for the full year. The accompanying
unaudited condensed consolidated financial statements should be, and are assumed
to have been, read in conjunction with the consolidated financial statements and
notes included in Holdings' and Chemicals' combined Annual Report on Form 10-K
for the fiscal year ended September 30, 1997 (the "Annual Report"). The
accompanying condensed consolidated balance sheets as of September 30, 1997,
have been derived from the audited consolidated balance sheets as of September
30, 1997, included in the Annual Report. The accompanying condensed consolidated
financial statements as of and for the three month and six month periods ended
March 31, 1998, have been subjected to a review by Deloitte & Touche LLP, the
Company's independent public accountants, whose reports are included herein.

     Certain amounts reported in the financial statements for the prior periods
have been reclassified to conform with the current financial statement
presentation with no effect on net loss or stockholders' equity (deficiency in
assets).


2. INVENTORIES:

<TABLE>
<CAPTION>
                                                                        MARCH 31,        SEPTEMBER 30,
                                                                           1998              1997
                                                                        ----------       -------------
<S>                                                                     <C>               <C>
Inventories consisted of the following (in thousands):
Finished products ...............................................       $   49,484        $   47,572
Raw materials ...................................................           18,223            17,800
Inventories under exchange agreements ...........................           11,945             2,179
Stores and supplies .............................................           20,618            20,319
                                                                        ----------        ----------
                                                                        $  100,270        $   87,870
                                                                        ==========        ==========
</TABLE>

3. LONG-TERM DEBT:

<TABLE>
<CAPTION>
                                                                        MARCH 31,        SEPTEMBER 30,
                                                                           1998              1997
                                                                        ----------       -------------
<S>                                                                     <C>               <C>
Long-term debt consisted of the following (in thousands):
Revolving credit facility .......................................       $   12,877        $    9,400
Term loans ......................................................          274,667           275,334
Saskatoon term loans ............................................           51,992            53,822
ESOP term loan ..................................................            4,062             4,875
11 1/4% Notes ...................................................          152,982           153,148
11 3/4% Notes ...................................................          275,000           275,000
13 1/2%  Notes ..................................................          118,838           110,412
                                                                        ----------        ----------
    Total debt outstanding ......................................          890,418           881,991

Less:
    Current maturities ..........................................           (5,634)           (5,710)
                                                                        ----------        ----------
Total long-term debt ............................................       $  884,784        $  876,281
                                                                        ==========        ==========
</TABLE>


                                       11
<PAGE>   12
     During April 1998, the Company obtained certain amendments to the financial
covenants contained in its $404.5 million senior secured credit agreement (the
"Credit Agreement"). The Company requested the changes in order to reduce the
covenant thresholds based on its revised financial projections for fiscal years
1998 and 1999. The amendments span a seven-quarter period, through September 30,
1999.

     The Company's ability to comply with the covenants and other terms of its
various debt agreements, meet its debt service obligations, and repay principal
when due will depend on the future performance of the Company. The future
performance of the Company is subject to a number of uncertainties. The Company
was in compliance with the financial covenants in effect as of March 31, 1998.
However, if weak market conditions (particularly in various countries in the Far
East) continue to negatively impact the sales prices, margins, and volumes of
the Company's products, particularly styrene, acrylonitrile, sodium chlorate,
and acrylic fibers, the Company may have difficulty remaining in compliance with
the financial covenants under certain of its debt agreements. If the Company
fails to remain in compliance with any financial covenants, the Company believes
it can obtain curative amendments or waivers for the non-compliance to its
current debt agreements; however, no assurances can be given that these
amendments or waivers will be obtained. In the event amendments or waivers are
not obtained, debt holders may pursue remedies available to them under the
relevant debt agreements.

4.   COMMITMENTS AND CONTINGENCIES:

Product Contracts

     The Company has certain long-term agreements that provide for the
dedication of 100% of the Company's production of acetic acid, plasticizers,
tertiary butylamine, and sodium cyanide, each to one customer. The Company also
has various sales and conversion agreements that dedicate significant portions
of the Company's production of styrene monomer, acrylonitrile, and methanol, the
Company's major petrochemical products, to various customers. These agreements
generally provide for cost recovery plus an agreed margin or element of profit
based upon market price.

Environmental Regulations

     The Company's operations involve the handling, production, transportation,
and disposal of materials classified as hazardous or toxic and are extensively
regulated under environmental and health and safety laws. Operating permits
which are required for the Company's operations are subject to periodic renewal
and may be revoked or modified for cause. New laws or permit requirements and
conditions may affect the Company's operations, products, or waste disposal.
Past or future operations may result in claims or liabilities. Expenditures
could be required to upgrade waste water collection, pretreatment, or disposal
systems or for other matters related to handling, production, transportation,
and disposal of materials classified as hazardous or toxic. No assurances can be
given that the Company will not incur material environmental expenditures
associated with its facilities, operations, or products.

Legal Proceedings

     Ammonia Release Lawsuits. A description of the ammonia release lawsuits is
found under "Legal Proceedings" in Note 7 of the "Notes To Consolidated
Financial Statements" of the Annual Report and is incorporated herein by
reference. As discussed therein, the Company continues to vigorously defend
against the claims of the approximately 1,500 remaining plaintiffs. The Company
has settled such lawsuits with certain of the original plaintiffs on an on-going
basis and anticipates that such practice will continue.

     Nickel Carbonyl Lawsuit. A description of the nickel carbonyl lawsuit is
found under "Legal Proceedings" in Note 7 of the "Notes to Consolidated
Financial Statements" of the Annual Report and is incorporated herein by
reference. A total of fifteen contractor employees allegedly exposed to nickel
carbonyl have filed a lawsuit against Chemicals seeking unspecified damages for
personal injuries. Additional claims and litigation against Chemicals asserting
similar claims may ensue.

     Ethylbenzene Release. On April 1, 1998, a minor chemical leak occurred when
a line failed in the ethylbenzene unit at the Company's Texas City petrochemical
plant. The released chemicals included ethylbenzene, benzene, polyethylbenzene
and a small amount of hydrochloric acid. The Company does not believe any
serious injuries were sustained, although a number of citizens sought medical
examinations at local hospitals after a precautionary alert was given to
neighboring communities.


                                       12
<PAGE>   13
     The Company anticipates that claims and litigation against Chemicals will
ensue as a result of the release. The Company believes that its general
liability insurance coverage is sufficient to cover all costs and expenses in
excess of the deductible.

     Other Lawsuits. The Company is subject to various other claims and legal
actions that arise in the ordinary course of its business.

Litigation Contingency

     The Company has made estimates of the reasonably possible range of its
liability with regard to outstanding litigation for which it may incur
liability. In addition, liabilities have been accrued based on the estimated
probable loss from such litigation. These estimates are based on management's
judgments using currently available information as well as consultation with the
Company's insurance carriers and outside legal counsel. A number of the claims
in these litigation matters are covered by the Company's insurance policies or
by third-party indemnification of the Company. The Company, therefore, has also
made estimates of its probable recoveries under these insurance policies or
third-party indemnitors based on its understanding of its insurance policies and
indemnifications, discussions with its insurers and indemnitors, and
consultation with outside legal counsel, in addition to the Company's judgments.
Based on the foregoing, as of March 31, 1998, the Company has accrued
approximately $6.3 million as its estimate of aggregate contingent liability for
these matters, and has also recorded aggregate receivables from its insurers and
third-party indemnitors of approximately $6.0 million. At March 31, 1998,
management estimates that the aggregate reasonably possible range of loss for
all litigation combined, in addition to the amount accrued, is from $0 to $12
million. The Company believes that this additional reasonably possible loss is
substantially covered by insurance.

     While the Company has based its estimates on its evaluation of available
information to date and the other matters described above, much of the
litigation is in its early stages and it is impossible to predict with certainty
the ultimate outcome. The Company will adjust its estimates as necessary if and
when additional information is developed and evaluated. However, the Company
believes that the final resolution of these contingencies will not have a
material adverse impact on the financial position, results of operations, or
cash flows of the Company. The timing of probable insurance recoveries and
additional accruals or payment of liabilities, if any, are not expected to have
a material adverse effect on the financial position, results of operations, or
cash flows of the Company.


5.   NEW ACCOUNTING STANDARDS:

     Statement of Financial Accounting Standards ("SFAS") No. 128, "Earnings Per
Share," establishes standards for computing and presenting earnings per share
("EPS") and replaces the presentation of primary EPS previously prescribed with
a presentation of basic EPS, which is computed by dividing income available to
common stockholders by the weighted average number of common shares outstanding
for the period. The statement also requires presentation of diluted EPS. Diluted
EPS is computed similarly to fully diluted EPS pursuant to Accounting Principles
Board Opinion No. 15. The Company adopted SFAS No. 128 for fiscal 1998 and has
restated prior year amounts to reflect adoption of the new standard. As losses
were incurred for each of the three month and six month periods ended March 31,
1998 and 1997, basic and dilutive EPS are the same amount for these periods.

     For purposes of computing net loss per common share, net loss has been
reduced by an amount equal to the fair market value of Released Shares (as
hereinafter defined) at the end of the period, minus the sum of the amount
previously recognized as compensation expense with respect to Released Shares
and the amount of depreciation/appreciation in value of Released Shares in prior
periods. This reduction results from the Company being required, under certain
circumstances, to purchase for cash common stock distributed to participants by
the Employee Stock Ownership Plan (the "ESOP"). "Released Shares" are shares
held by the ESOP but allocated to


                                       13
<PAGE>   14
employees. The weighted average number of outstanding shares and computation of
the net loss per common share is as follows (in thousands, except per share
data):

<TABLE>
<CAPTION>
                                                                       Three Months Ended             Six Months Ended
                                                                            March 31,                     March 31,
                                                                     ------------------------      ------------------------
                                                                       1998           1997           1998           1997
                                                                     --------       ---------      --------       ---------
<S>                                                                  <C>            <C>            <C>            <C>
Net loss attributable to common stockholders ...................     $ (16,879)     $  (7,973)     $ (27,652)     $ (15,171)
Less depreciation in value of Released Shares ..................           505           --              505           --
                                                                     ---------      ---------      ---------      ---------
Net loss for purpose of computing net loss per share ...........     $ (16,374)     $  (7,973)     $ (27,147)     $ (15,171)
                                                                     =========      =========      =========      =========
Net loss per common share ......................................     $   (1.37)     $   (0.72)     $   (2.28)     $   (1.40)
                                                                     =========      =========      =========      =========
Weighted average shares outstanding ............................        11,984         11,118         11,918         10,860
                                                                     =========      =========      =========      =========
</TABLE>


     SFAS No. 130, "Reporting Comprehensive Income", establishes standards for
reporting and displaying of comprehensive income and its components. SFAS No.
131, "Disclosure About Segments of an Enterprise and Related Information",
establishes standards for the way that public business enterprises report
information about operating segments in interim and annual financial statements.
Management is currently evaluating the disclosures required when these two
statements are adopted in the first quarter of fiscal 1999.


6. BUSINESS ACQUISITIONS:

     On January 31, 1997, the Company acquired the acrylic fibers business from
Cytec Industries Inc. (the "AFB Acquisition"). The acrylic fibers business, now
owned by two wholly owned subsidiaries of Chemicals (collectively "Sterling
Fibers"), recorded sales of approximately $92 million during the eight months of
operations in fiscal 1997 and consists of an acrylic fibers plant located near
Pensacola, Florida, and several associated marketing and research offices. The
Company used the purchase method to account for the AFB Acquisition and
operating results of Sterling Fibers beginning February 1, 1997 are included
with those of the Company.

     On July 10, 1997, Sterling Pulp Chemicals (Sask) Ltd. ("Sterling Sask"), an
indirect wholly owned subsidiary of Holdings and Chemicals, acquired
substantially all of the assets of Saskatoon Chemicals Ltd., a subsidiary of
Weyerhaeuser Canada Ltd. (the "Saskatoon Acquisition"). The acquired assets
include a manufacturing plant near Saskatoon, Saskatchewan, and are used by
Sterling Sask to manufacture sodium chlorate, caustic soda, calcium
hypochlorite, chlorine, and hydrochloric acid. The Company used the purchase
method to account for the acquisition and operating results of Sterling Sask
beginning July 10, 1997 are included with those of the Company.

     The following table presents the unaudited pro forma results of operations
of the Company as if the AFB Acquisition and the Saskatoon Acquisition had
occurred on October 1, 1996. The pro forma results have been prepared for
comparative purposes only and do not purport to be indicative of what would have
occurred had the AFB Acquisition and the Saskatoon Acquisition been made at the
beginning of fiscal year 1997 or of results which may occur in the future (in
thousands, except per share amounts).

                                                             PRO FORMA
                                                             SIX MONTHS
                                                               ENDED
                                                             MARCH 31,
                                                                1997
                                                             ----------
Revenues...............................................       $494,100
Net loss before extraordinary items....................        (17,300)
Net loss attributable to common stockholders...........        (17,300)
Net loss per common share..............................       $  (1.43)


                                       14
<PAGE>   15

                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Board of Directors and Stockholders
of Sterling Chemicals Holdings, Inc.

     We have reviewed the accompanying condensed consolidated balance sheet of
Sterling Chemicals Holdings, Inc. and subsidiaries (the "Company") as of March
31, 1998, and the related condensed consolidated statements of operations and
cash flows for the three month and six month periods then ended. These financial
statements are the responsibility of the Company's management.

     We conducted our review in accordance with standards established by the
American Institute of Certified Public Accountants. A review of interim
financial information consists principally of applying analytical procedures to
financial data and making inquiries of persons responsible for financial and
accounting matters. It is substantially less in scope than an audit conducted in
accordance with generally accepted auditing standards, the objective of which is
the expression of an opinion regarding the financial statements taken as a
whole. Accordingly, we do not express such an opinion.

     Based on our review, we are not aware of any material modifications that
should be made to the condensed consolidated financial statements referred to
above for them to be in conformity with generally accepted accounting
principles.

     We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheet of the Company as of September 30,
1997, and the related consolidated statements of operations, stockholders'
equity (deficiency in assets), and cash flows for the year then ended (not
presented herein); and in our report dated December 3, 1997, we expressed an
unqualified opinion on those consolidated financial statements. In our opinion,
the information set forth in the accompanying condensed consolidated balance
sheet as of September 30, 1997 is fairly stated in all material respects, in
relation to the consolidated balance sheet from which it has been derived.


DELOITTE & TOUCHE LLP

Houston, Texas
May 12, 1998


                                       15
<PAGE>   16
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Stockholder of Sterling Chemicals, Inc.

     We have reviewed the accompanying condensed consolidated balance sheet of
Sterling Chemicals, Inc. and subsidiaries ("Chemicals") as of March 31, 1998,
and the related condensed consolidated statements of operations and cash flows
for the three month and six month periods then ended. These financial statements
are the responsibility of Chemicals' management.

     We conducted our review in accordance with standards established by the
American Institute of Certified Public Accountants. A review of interim
financial information consists principally of applying analytical procedures to
financial data and making inquiries of persons responsible for financial and
accounting matters. It is substantially less in scope than an audit conducted in
accordance with generally accepted auditing standards, the objective of which is
the expression of an opinion regarding the financial statements taken as a
whole. Accordingly, we do not express such an opinion.

     Based on our review, we are not aware of any material modifications that
should be made to the condensed consolidated financial statements referred to
above for them to be in conformity with generally accepted accounting
principles.

     We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheet of Chemicals as of September 30, 1997,
and the related consolidated statement of operations, stockholder's equity
(deficiency in assets), and cash flows for the year then ended (not presented
herein); and in our report dated December 3, 1997, we expressed an unqualified
opinion on those consolidated financial statements. In our opinion, the
information set forth in the accompanying condensed consolidated balance sheet
as of September 30, 1997 is fairly stated in all material respects, in relation
to the consolidated balance sheet from which it has been derived.

DELOITTE & TOUCHE LLP

Houston, Texas
May 12, 1998


                                       16
<PAGE>   17

ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
          RESULTS OF OPERATIONS

Certain capitalized terms used herein but not defined have the meanings assigned
to them in the Notes To Condensed Consolidated Financial Statements or in the
Notes to the Consolidated Financial Statements included in the Company's Annual
Report on Form 10-K.


OVERVIEW

     Holdings is a holding company whose only material asset is its investment
in Chemicals. Holdings' only material liabilities are its obligation to repay
the 13 1/2% Senior Secured Discount Notes due 2008 (the "13 1/2% Notes"), redeem
its outstanding preferred stock, and certain other contingent obligations.
Chemicals owns substantially all of the consolidated operating assets and is
obligated for substantially all remaining liabilities of the Company. Other than
the additional interest expense associated with the 13 1/2% Notes, the results
of operations for the Company are essentially the same as those for Chemicals.
Accordingly, the discussion that follows is applicable to both entities, except
as specifically noted. A separate discussion of the results of operations for
Chemicals, would not, in the opinion of the Company, provide any additional
meaningful information.


RECENT DEVELOPMENTS

     During April 1998, the Company obtained certain amendments to the financial
covenants contained in its $404.5 million senior secured credit agreement (the
"Credit Agreement"). The Company requested the changes in order to reduce the
covenant thresholds based on its revised financial projections for fiscal years
1998 and 1999. The amendments span a seven-quarter period, through September 30,
1999.

     On April 1, 1998, a minor chemical leak occurred when a line failed in the
ethylbenzene unit at the Company's Texas City petrochemical plant (the "Texas
City Plant"). The released chemicals included ethylbenzene, benzene,
polyethylbenzene, and a small amount of hydrochloric acid. The Company does not
believe any serious injuries were sustained, although a number of citizens
sought medical examinations at local hospitals after a precautionary alert was
given to neighboring communities.

     On March 30, 1998, the Company and BP Chemicals Inc. ("BP") established an
exclusive 50/50 acrylonitrile joint venture marketing company, ANEXCO LLC, to
service the acrylonitrile marketing needs of both partners in Asia and South
America beginning April 1, 1998. The Company and BP project annual sales by
ANEXCO LLC of approximately 500,000 metric tons of acrylonitrile with most
material coming from the United States, supplemented by product from South
Africa.

     On January 28, 1998, one of the Company's suppliers experienced a fire in
the Partial Oxidation Unit used by the supplier to provide carbon monoxide and
hydrogen to the Texas City Plant. As a result of this incident, the Company was
forced to shutdown its acetic acid unit and a portion of its plasticizers unit
at the Texas City Plant for a portion of the second quarter of fiscal 1998.

     During January and April of 1998, 64 and 47 Company employees,
respectively, took early retirement under voluntary severance programs
established by the Company at the Texas City Plant. The Company recorded a
pre-tax charge of $2.9 million in the second quarter of fiscal 1998 for costs
associated with the January workforce reduction. The Company expects to record a
pre-tax charge of approximately $3.0 million in the third quarter of fiscal 1998
for costs associated with the April workforce reduction. The Company anticipates
annual savings from such workforce reductions of approximately $6.0 million.

     Effective January 1, 1998, the Company extended, for a period of at least
ten years, the plasticizers product sales agreement with BASF Corporation.

     During the second quarter of fiscal 1998, Peter W. De Leeuw joined the
Company as President and Chief Executive Officer and a member of the Board of
Directors following the retirement of Robert W. Roten. In addition, David G.
Elkins and Gary M. Spitz joined the Company as Vice President and General
Counsel and Vice President - Finance and Chief Financial Officer, respectively.
These new employees join Frank P. Diassi, (Chairman of the Board of Directors),
Richard K. Crump, (Vice President-Strategic Planning), Robert O. McAlister (Vice
President-Human Resources and Administration), 


                                       17
<PAGE>   18
Mark A. Davis (President-Pulp Chemicals Division), and Richard J. Ryan
(President-Fibers Division) as members of the Company's senior management team.
Upon his retirement, Robert W. Roten was elected Vice Chairman of the Board of
Directors. In addition, on April 22, 1998, J. Virgil Waggoner, a co-founder of
the Company in 1986, tendered his resignation from the Board of Directors.


RESULTS OF OPERATIONS

     Revenues for the second quarter of fiscal 1998 were $205 million compared
to revenues of $240 million for the second quarter of fiscal 1997, a decrease
of 15%. The decrease in revenues was primarily due to reduced styrene and
acrylonitrile sales volumes and sales prices, partially offset by the favorable
impact of revenues from the Saskatoon Acquisition in the current quarter.
Revenues for the six month period ending March 31, 1998 were $435 million
compared to $427 million in the prior year period, an increase of 2%. The
increase in revenues was the result of the positive impact of the AFB and the
Saskatoon Acquisitions mostly offset by reduced styrene sales volumes and lower
styrene and acrylonitrile selling prices. Revenues excluding the impact of the
AFB Acquisition and the Saskatoon Acquisition would have been $167 million and
$216 million for the second quarters of fiscal 1998 and 1997, respectively, and
$360 million and $403 million for the six month periods ending March 31, 1998
and 1997, respectively. A net loss of $16.9 million, or $1.37 per share, was
recorded for the second quarter of fiscal 1998 compared to a net loss of $8.0
million, or $0.72 per share, for the second quarter of fiscal 1997. A net loss
of $27.7 million, or $2.28 per share, was recorded for the six month period
ending March 31, 1998, compared to a net loss of $15.2 million, or $1.40 per
share, for the same period of fiscal 1997. Increased losses for the three and
six month periods ending March 31, 1998 as compared to the prior year periods
were primarily due to: (i) reduced acrylonitrile and styrene margins, (ii) weak
markets in acrylic fibers, (iii) lower margins in sodium chlorate, (iv)
increased interest expense resulting from financings related to the AFB
Acquisition and the Saskatoon Acquisition and the issuance of $150,000,000 of 
11 1/4% Senior Subordinated Notes due 2007 (the "11 1/4% Notes"), and (v) 
increased selling, general and administrative ("SG&A") expense.


Petrochemicals and Fibers

     For the second quarter of fiscal 1998, revenues from the petrochemical and
fibers businesses decreased 22% to $155 million as compared to $198 million in
the prior year period. The decrease in revenues was primarily due to decreased
styrene and acrylonitrile sales volumes and sales prices. For the six months
ending March 31, 1998, revenues were $332 million as compared to $342 million in
the same period of fiscal 1997. The 3% decrease in revenues was primarily due to
reduced styrene sales volumes and lower styrene and acrylonitrile sales prices.
These decreases were partially offset by increased revenues from the AFB
Acquisition. The economic conditions in Asia negatively impacted market
conditions in the fiscal 1998 periods, particularly for the Company's styrene,
acrylonitrile, and acrylic fibers products. The Company's petrochemical and
fibers businesses recorded operating losses of $8.8 million and $9.3 million for
the three and six month periods of fiscal 1998, respectively, compared to
operating losses of $3.3 million and $5.8 million for the same periods of fiscal
1997. The increase in operating losses in the three and six month periods ending
March 31, 1998, as compared to the same periods of fiscal 1997, were primarily
due to weaker operational performance in styrene and acrylonitrile, partially
offset by stronger performance in acetic acid and plasticizers.

     Styrene. Styrene revenues decreased 37% to $56 million in the second
quarter of fiscal 1998 and 25% to $123 million for the six months ending March
31, 1998, compared to the same periods in fiscal 1997. Styrene sales prices
decreased 22% and 14% for the second quarter and first six months of fiscal
1998, respectively, as compared to the prior year periods. In addition, styrene
sales volumes decreased 24% and 18% for the second quarter and first six months
of fiscal 1998, respectively, as compared to the prior year periods. These
decreases in sales prices and volumes were primarily due to weaker market
conditions, particularly in the Far East export market. The prices of styrene's
major raw materials, benzene and ethylene, were approximately 14% and 21% lower,
respectively, during the second quarter of fiscal 1998 and approximately 9% and
13% lower, respectively, during the first six months of fiscal 1998 as compared
to the same periods in fiscal 1997. Styrene margins decreased in the second
quarter and first six months of fiscal 1998 compared to the same periods in
fiscal 1997 as significantly lower sales prices more than offset the lower raw
materials costs. In addition, the styrene business was negatively impacted by
approximately $4 million due to reduced margins and inventory devaluations
associated with falling raw materials costs during the second quarter of fiscal
1998.

     Acrylonitrile. Acrylonitrile revenues decreased 31% to $29 million in the
second quarter of fiscal 1998 


                                       18
<PAGE>   19

and 10% to $61 million in the first six months of fiscal 1998 compared to the
same periods in fiscal 1997. Decreased revenues in the second quarter of fiscal
1998 were primarily due to lower volumes (22%) and lower selling prices (25%).
The decrease in volume was primarily due to a 21 day shutdown as a result of a
mechanical problem in the acrylonitrile unit during the second quarter of fiscal
1998, which has been fully corrected and will not impact the third quarter of
fiscal 1998 operations. Decreased revenues for the first six months of fiscal
1998 were the result of a 21% decline in selling prices. The lower sales prices
in both periods were primarily due to weaker market conditions, primarily in the
Far East export market. The prices of acrylonitrile's major raw materials,
propylene and ammonia, were approximately 27% and 35% lower, respectively, in
the second quarter of fiscal 1998 and approximately 16% and 27% lower,
respectively, during the first six months of fiscal 1998 as compared to the
comparable periods in fiscal 1997. Acrylonitrile margins decreased in the second
quarter and the first six months of fiscal 1998 compared to the same periods of
fiscal 1997, as significantly lower sales prices more than offset the lower raw
material costs.

     Fibers. Sterling Fibers revenues for the second quarter and first six
months of fiscal 1998 were $25 million and $51 million, respectively. The
Company consummated the AFB Acquisition on January 31, 1997, and, therefore
recorded revenues of $23 million for the comparable periods of fiscal 1997.
Sterling Fibers performance in fiscal 1998 was negatively impacted by weak
market conditions, particularly in the Far East export market and to a lesser
extent the loss of a domestic customer.

     Other Petrochemical Products. Revenues from the Company's other
petrochemical products (including methanol, acetic acid, plasticizers, tertiary
butylamine, and sodium cyanide) in the second quarter of fiscal 1998 increased
3% to $45 million and 12% to $96 million in the first six months of fiscal 1998
as compared to the same periods last fiscal year. The Company's other
petrochemical products continued its stable, strong performance with an increase
in operating earnings in the second quarter and first six months of fiscal 1998
as compared to the same periods of fiscal 1997 despite any impacts from economic
conditions in Asia. The increase in revenues and operating earnings was
primarily due to better operating performance in acetic acid and plasticizers.

Pulp Chemicals

     Revenues from the Company's pulp chemical business increased 19% to $49
million and 22% to $103 million for the second quarter and first six months of
fiscal 1998, respectively, when compared to the same periods last fiscal year.
The increase in revenues was primarily due to an increase in sales volumes of
sodium chlorate of 12% and 28% for the second quarter and first six months of
fiscal 1998, respectively, when compared to the corresponding periods of fiscal
1997. The increases in sales volumes were primarily due to the additional
volumes from the recent Saskatoon Acquisition and the startup of the Valdosta
Plant in December 1996. Average sales prices for sodium chlorate declined 9% in
both the second quarter and first six months of fiscal 1998 compared to the
corresponding periods in fiscal 1997. The decline in chlorate sales prices was
primarily due to weaker market conditions resulting, in part, from the economic
environment in various countries in the Far East as well as lower pulp mill
operating rates. Revenues from the sale of generators and royalty income
remained level in the second quarter and decreased 22% in the first six months
of fiscal 1998 compared to the corresponding periods of fiscal 1997. The
decrease in revenues for the six month period of fiscal 1998 was primarily due
to timing of project work related to generators. The Company's pulp chemicals
business recorded operating earnings of $8 million and $20 million for the three
and six months ending March 31, 1998, respectively, compared to operating
earnings of $13 million and $24 million for the same periods of fiscal 1997. The
reduced operating earnings in the fiscal 1998 periods compared to the fiscal
1997 periods is primarily due to reduced sodium chlorate sales prices and higher
energy costs in the current periods, partially offset by increased sodium
chlorate sales volumes.

Selling, General, and Administrative Expenses

     SG&A expenses increased to $12 million and $24 million during the second
quarter and first six months of fiscal 1998, respectively, as compared to $7
million and $13 million in the second quarter and first six months of fiscal
1997, respectively. The increase was primarily due to SG&A expense related to
the new fibers business, the new Saskatoon chemical business, and increased
corporate development activities.

Other Expense

     Other expense of $3 million in the three and six month periods ending March
31, 1998 is related to the previously discussed January 1998 voluntary severance
program.


                                       19
<PAGE>   20
Interest and Debt Related Expense

    Interest and debt related expenses for the three and six months ending March
31, 1998, were $25 million and $50 million, respectively, compared to $21
million and $39 million, respectively, for the corresponding periods in fiscal
1997. This increase is primarily due to the additional debt incurred in
connection with the AFB and Saskatoon Acquisitions and the issuance of the
11 1/4% Notes.


LIQUIDITY AND CAPITAL RESOURCES

Debt Structure

     As of March 31, 1998, the Company's debt structure consisted of: (i) term
loans due March 31, 2003 and September 30, 2004 (the "Term Loans"); (ii)
Saskatoon Term Loans due June 30, 2002 and June 30, 2005; (iii) the 11 1/4%
Notes; (iv) 11 3/4% Senior Subordinated Notes due 2006 (the "11 3/4% Notes");
(v) the 13 1/2% Notes; (vi) an ESOP Term Loan due September 30, 2000; and (vii)
a revolving credit facility providing up to $125 million (subject to a monthly
borrowing base calculation) in revolving loans (the "Revolver") (see Note 3 to
the Notes to Condensed Financial Statements). At March 31, 1998, the Company's
long-term debt (including current maturities) totaled $890.4 million.

     The Company intends to meet its liquidity needs for operating activities
and capital expenditures (other than acquisitions) through internally generated
funds and, to the extent necessary, borrowings under the Revolver. As of March
31, 1998, the Company had $12.9 million drawn and approximately $2.4 million in
letters of credit outstanding under the Revolver, thereby decreasing the
available commitments under the Revolver at such time to $108.9 million
(compared to an available commitment thereunder as of September 30, 1997, of
$113.0 million). Available credit under the Revolver for loans and letters of
credit is subject to a monthly borrowing base consisting of 85% of eligible
accounts receivable and 65% of eligible inventory with an inventory cap of 50%
of the borrowing base. At March 31, 1998, the borrowing base limited the total
credit available under the Revolver to a maximum of $124.2 million. The Revolver
matures on March 31, 2003. The Company believes its internally generated funds
and the undrawn amount of the Revolver will be sufficient to meet its liquidity
needs during fiscal 1998.

     The Company's ability to obtain additional financing in the future for
working capital, capital expenditures, acquisitions and general corporate
purposes, should it need to do so, will be affected by the covenants in its
various debt agreements and by cash requirements for debt service. The Credit
Agreement and the indentures governing the 11 1/4% Notes, 11 3/4% Notes, and
13 1/2% Notes (the "Indentures") contain numerous financial and operational
covenants, including, without limitation, restrictions on the Company's ability
to incur indebtedness, pay dividends, create liens, sell assets, engage in
mergers and acquisitions, and refinance existing indebtedness, as well as the
obligation of the Company to maintain certain financial ratios. Based on the
Company's pro forma results of operations for the four quarters ended March 31,
1998, these restrictions currently operate to prevent the Company from incurring
any additional debt other than debt incurred under the Revolver or pursuant to
certain limited "baskets" and other exceptions. Under limited circumstances, the
Company may, however, consummate additional acquisitions under the Credit
Agreement and the Indentures (i) through the incurrence of debt in Unrestricted
Subsidiaries (as defined in the Indentures and the Credit Agreement) or (ii) if
the pro forma effect of such acquisition has a sufficient positive impact on
certain financial ratios. The Company generally will not have access to the cash
flows of Unrestricted Subsidiaries, as in the case of Sterling Sask. The Credit
Agreement also requires that certain amounts of Excess Cash Flow (as defined
therein) be used to prepay amounts outstanding under the Term Loans. No such
mandatory prepayment is required in fiscal 1998.

     During April 1998, the Company announced it had obtained certain amendments
to the financial covenants in the Credit Agreement. The Company requested the
changes in order to reduce the covenant thresholds based on its revised
financial projections for fiscal years 1998 and 1999. The amendments span a
seven-quarter period, through September 30, 1999.

     The Company's ability to comply with the covenants and other terms of its
various debt agreements, meet its debt service obligations, and repay principal
when due will depend on the future performance of the Company. The future
performance of the Company is subject to a number of uncertainties. The Company
was in compliance with the financial covenants in effect as of March 31, 1998.
However, if weak market conditions (particularly in various countries in the Far
East) continue to negatively impact the sales prices, margins, and volumes of
the Company's products (particularly styrene, acrylonitrile, and acrylic
fibers), the Company may have difficulty remaining in 


                                       20
<PAGE>   21
compliance with the financial covenants under certain of its debt agreements. If
the Company fails to remain in compliance with any financial covenants, the
Company believes it can obtain curative amendments or waivers for the
non-compliance to its current debt agreements; however, no assurances can be
given that these amendments or waivers will be obtained. In the event amendments
or waivers are not obtained, debt holders may pursue remedies available to them
under the relevant debt agreements.

     The Company's loan documents contain provisions which restrict the payment
of advances, loans, and dividends from its subsidiaries (including Chemicals) to
Holdings. The most restrictive of those covenants limits such payments during
fiscal 1998 to approximately $2.0 million plus any amounts due to Holdings from
Chemicals under the intercompany tax sharing agreement. Such restriction is not
expected to limit Holdings' ability to meet its obligations in fiscal 1998.

Working Capital

     Working capital of the Company was $110 million at March 31, 1998, down
from $120 million at September 30, 1997. The $10 million decrease in working
capital was primarily due to lower receivables.

Cash Flow

     Net cash provided by operations was $14 million for the six months ending
March 31, 1998 and $9 million for the six months ending March 31, 1997. The
increase in cash provided by operations is primarily due to the timing of
working capital items.

Capital Expenditures

     The Company's capital expenditures for the first six months of fiscal 1998
were $13 million compared to $25 million in the same period in fiscal 1997. The
capital expenditures in the first six months of fiscal 1998 were primarily
related to routine safety, environmental, and replacement capital. The capital
expenditures in the first six months of fiscal 1997 were primarily related to
the construction of the Valdosta, Georgia sodium chlorate plant, along with a
distributive control system installation at the Company's acrylonitrile unit.
During the remainder of fiscal 1998, the Company expects to spend approximately
$12 million to $17 million on process modernization, routine safety,
environmental, and replacement capital. The Company expects to fund its
remaining fiscal 1998 capital expenditures from operating cash flow, plus
borrowings under the Revolver, if needed.


Year 2000 Issue

     The Year 2000 issue is the result of potential problems with computer
systems or any equipment with computer chips that use dates where the date has
been stored as just two digits (e.g. 97 for 1997). On January 1, 2000, any clock
or date recording mechanism including date sensitive software which uses only
two digits to represent the year may recognize a date using 00 as the year 1900
rather than the year 2000. This could result in a system failure or
miscalculations causing disruption of operations, including among other things,
a temporary inability to process transactions, send invoices, or engage in
similar activities.

     As is the case with most companies using computers in their operations, the
Company is in the process of addressing the Year 2000 issue. The Company is
currently engaged in a comprehensive project to upgrade its information,
technology, manufacturing and facilities computer software to programs that will
consistently and properly recognize the Year 2000.

     The Company will utilize both internal and external resources to replace
all of the necessary software for Year 2000 compliance, and the Company expects
to complete the project by mid 1999. The estimated expense for this project is
approximately $7 to $10 million. In addition, no assurances can be given that
total Year 2000 compliance can be achieved because of the significant degree of
interdependence with third party suppliers, service providers, and customers.
Failure by the Company to complete Year 2000 compliance work in a timely manner
could have a material adverse effect on the Company's financial condition and
results of operations.


                                       21
<PAGE>   22
NOTE REGARDING FORWARD-LOOKING STATEMENTS

     This Form 10-Q includes "forward-looking statements" within the meaning of
Section 27A of the Securities Act of 1933, as amended, and Section 21E of the
Securities Exchange Act of 1934, as amended. All statements (other than
statements of historical facts) included in this Form 10-Q, including without
limitation the statements under "Management's Discussion and Analysis of
Financial Condition and Results of Operations" regarding the cyclicality of the
Company's industry, current and future industry conditions and the potential
effects of such matters on the Company's business strategy, results of
operations and financial position, are forward-looking statements. Although the
Company believes that the expectations reflected in the forward-looking
statements contained herein are reasonable, no assurance can be given that such
expectations will prove to have been correct. Certain important factors that
could cause actual results to differ materially from expectations ("Cautionary
Statements") are stated herein in conjunction with the forward-looking
statements or are included elsewhere in this Form 10-Q. All subsequent written
and oral forward-looking statements attributable to the Company or persons
acting on its behalf are expressly qualified in their entirety by the Cautionary
Statements.


PART II--OTHER INFORMATION


ITEM 1.  LEGAL PROCEEDINGS

         The information under "Legal Proceedings" in the Notes to Condensed
Consolidated Financial Statements herein is hereby incorporated by reference.
See also "Item 3. Legal Proceedings" in the Company's Annual Report on Form
10-K.


ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         The Company's Annual Meeting of Stockholders was held on January 28,
1998, at which time the Company's nine nominees for directors were elected, the
appointment of Deloitte & Touche LLP as the independent auditors of the
financial statements of the Company for the fiscal year ended September 30, 1998
was ratified, and the Sterling Chemicals Holdings, Inc. Omnibus Stock Awards and
Incentive Plan was approved.


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

     (a) Exhibits: The following exhibits are filed as part of this Form
10-Q.

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                        DESCRIPTION OF EXHIBIT
- ------                        ----------------------
<S>    <C>
4.1    --First Amendment to Amended and Restated Credit Agreement, dated March
         31, 1998, among Sterling Chemicals, Inc. and Chase Bank of Texas, N.A.,
         individually and as Administrative Agent, Credit Suisse First Boston,
         individually and as Documentation Agent, and the other lenders named
         therein.

4.2    --First Supplemental Indenture, dated October 1, 1997, governing the
         13 1/2% Senior Secured Discount Notes Due 2008 of the Company.

4.3    --Second Supplemental Indenture, dated March 16, 1998, governing the
         13 1/2% Senior Secured Discount Notes Due 2008 of the Company.

4.4    --First Supplemental Indenture, dated October 1, 1997, governing the
         11 3/4% Senior Subordinated Notes Due 2006 of Sterling Chemicals,
         Inc. (formerly known as STX Chemicals Corp.)

4.5    --Second Supplement Indenture, dated March 16, 1998, governing the
         11 3/4% Senior Subordinated Notes Due 2006 of Sterling Chemicals,
         Inc.

4.6    --First Supplemental Indenture, dated March 16, 1998, governing the
         11 1/4% Senior Subordinated Notes Due 2007 of Sterling Chemicals,
         Inc.
</TABLE>


                                       22
<PAGE>   23

<TABLE>
<CAPTION>
<S>    <C>
  4.7  --First Amendment to Sterling Chemicals Holdings, Inc. Stockholders
         Agreement dated effective as of December 31, 1997.

 10.1  --Sterling Chemicals Holdings, Inc. Omnibus Stock Awards and Incentive
         Plan effective April 23, 1997, as amended.

+10.2  -- Amended and Restated Production Agreement dated March 31, 1998,
         between BP Chemicals, Inc. and Sterling Chemicals, Inc.

+10.3  --Amended and Restated Production Agreement effective August 1, 1998,
         between BP Chemicals, Inc. and Sterling Chemicals, Inc.

+10.4  --Joint Venture Agreement dated March 31, 1998, between Sterling
         Chemicals, Inc. and BP Chemicals, Inc.

 11.1  --Earnings Per Share Calculation.

 15.1  --Letter of Deloitte & Touche LLP regarding unaudited interim financial
         information.

 27.1  --Financial Data Schedule of Sterling Chemicals Holdings, Inc.

 27.2  --Financial Data Schedule of Sterling Chemicals, Inc
</TABLE>

   +   Filed herewith and confidential treatment has been requested with respect
to portions of this exhibit.


    (b) Reports on Form 8-K.

        None.


                                       23
<PAGE>   24
                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, as
amended, the registrants have duly caused this report to be signed on their
behalf by the undersigned thereunto duly authorized.


                                     STERLING CHEMICALS HOLDINGS, INC.
                                     STERLING CHEMICALS, INC.
                                     (Registrants)



Date:  May 13, 1998                  /s/  PETER W. DE LEEUW
                                     ------------------------------------------
                                     Peter W. De Leeuw
                                     President and Chief Executive Officer
                                     (Principal Executive Officer)



Date:  May 13, 1998                  /s/   GARY M. SPITZ
                                     ------------------------------------------
                                     Gary M. Spitz
                                     Vice President-Finance and Chief Financial
                                       Officer
                                     (Principal Financial Officer)



                                       24
<PAGE>   25

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                        DESCRIPTION OF EXHIBIT
- ------                        ----------------------
<S>    <C>
4.1    --First Amendment to Amended and Restated Credit Agreement, dated March
         31, 1998, among Sterling Chemicals, Inc. and Chase Bank of Texas, N.A.,
         individually and as Administrative Agent, Credit Suisse First Boston,
         individually and as Documentation Agent, and the other lenders named
         therein.

4.2    --First Supplemental Indenture, dated October 1, 1997, governing the
         13 1/2% Senior Secured Discount Notes Due 2008 of the Company.

4.3    --Second Supplemental Indenture, dated March 16, 1998, governing the
         13 1/2% Senior Secured Discount Notes Due 2008 of the Company.

4.4    --First Supplemental Indenture, dated October 1, 1997, governing the
         11 3/4% Senior Subordinated Notes Due 2006 of Sterling Chemicals,
         Inc. (formerly known as STX Chemicals Corp.)

4.5    --Second Supplement Indenture, dated March 16, 1998, governing the
         11 3/4% Senior Subordinated Notes Due 2006 of Sterling Chemicals,
         Inc.

4.6    --First Supplemental Indenture, dated March 16, 1998, governing the
         11 1/4% Senior Subordinated Notes Due 2007 of Sterling Chemicals,
         Inc.
</TABLE>

<PAGE>   26

<TABLE>
<CAPTION>
<S>    <C>
  4.7  --First Amendment to Sterling Chemicals Holdings, Inc. Stockholders
         Agreement dated effective as of December 31, 1997.

 10.1  --Sterling Chemicals Holdings, Inc. Omnibus Stock Awards and Incentive
         Plan effective April 23, 1997, as amended.

+10.2  -- Amended and Restated Production Agreement dated March 31, 1998,
         between BP Chemicals, Inc. and Sterling Chemicals, Inc.

+10.3  --Amended and Restated Production Agreement effective August 1, 1998,
         between BP Chemicals, Inc. and Sterling Chemicals, Inc.

+10.4  --Joint Venture Agreement dated March 31, 1998, between Sterling
         Chemicals, Inc. and BP Chemicals, Inc.

 11.1  --Earnings Per Share Calculation.

 15.1  --Letter of Deloitte & Touche LLP regarding unaudited interim financial
         information.

 27.1  --Financial Data Schedule of Sterling Chemicals Holdings, Inc.

 27.2  --Financial Data Schedule of Sterling Chemicals, Inc
</TABLE>

   +   Filed herewith and confidential treatment has been requested with respect
to portions of this exhibit.


<PAGE>   1
                                                                     Exhibit 4.1


                               FIRST AMENDMENT TO
                      AMENDED AND RESTATED CREDIT AGREEMENT

              THIS FIRST AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT
(this "First Amendment") dated effective as of March 31, 1998 (the "First
Amendment Effective Date") is by and among STERLING CHEMICALS, INC., a Delaware
corporation (the "Company"), CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,
individually and as Administrative Agent, and CREDIT SUISSE FIRST BOSTON,
individually and as Documentation Agent, and the other financial institutions
signatories hereto.

                             PRELIMINARY STATEMENTS

       1.     The Company has entered into an Amended and Restated Credit
              Agreement dated as of July 10, 1997 among the Company, Texas
              Commerce Bank National Association (now known as Chase Bank of
              Texas, National Association), individually, as an Issuing Bank and
              as Administrative Agent, Credit Suisse First Boston, individually,
              as an Issuing Bank and as Documentation Agent, and the financial
              institutions parties thereto (the "Original Agreement").
              Capitalized terms used but not otherwise defined herein shall have
              the meanings assigned such terms in the Original Agreement.

       2.     The Company has requested that certain provisions of the Original
              Agreement be modified and amended.

       3.     The Company, the Administrative Agent, the Documentation Agent,
              the Subsidiary Guarantors and the Lenders have agreed to amend the
              Original Agreement on the terms and conditions contained herein.

                                    AGREEMENT

              In consideration of the premises and the mutual covenants
contained herein and in the Original Agreement, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto, intending to be legally bound, hereby agree as follows:

              Section 1. Amendment of Section 1.01 of the Original Agreement.
Section 1.01 of the Original Agreement is hereby amended by adding the following
new definitions thereto immediately following the definition of "Financing
Documents" contained therein:

              "First Amendment" shall mean the First Amendment to Amended and
       Restated Credit Agreement dated as of March 31, 1998 among the Company,
       the Administrative Agent, the Documentation Agent and the Required
       Lenders.


<PAGE>   2

              Section 2. Amendment of Section 1.01 of the Original Agreement.
The definition of "Agreement" contained in Section 1.01 of the Original
Agreement is hereby amended to read in its entirety as follows:

              "Agreement" shall mean this Amended and Restated Credit Agreement,
       as amended by the First Amendment and as further amended, modified or
       supplemented from time to time.

              Section 3. Amendment of Section 4.09 of the Original Agreement.
The first sentence of Section 4.09 of the Original Agreement is hereby amended
to read in its entirety as follows:

       The Company will use the proceeds of the Loans only for the purposes
       specified in the Introductory Statements to this Agreement; provided,
       however, that in no event shall the Company use the proceeds of any Loan
       for the purpose of making any investment pursuant to Section 5.04(e)(xx).

              Section 4. Amendment of Section 5.03(a) of the Original Agreement.
Section 5.03(a) of the Original Agreement is hereby amended to read in its
entirety as follows:

              (a) Interest Coverage Ratio. Maintain an Interest Coverage Ratio
       of not less than the ratio for each Rolling Period indicated below:

<TABLE>
<CAPTION>

                    Each Rolling Period ending                                  Ratio
                    --------------------------                                  -----
                    <S>                                                         <C> 
                    December 31, 1996                                           1.75
                    March 31, 1997                                              1.75
                    June 30, 1997                                               1.75
                    September 30, 1997                                          1.50
                    December 31, 1997                                           1.35
                    March 31, 1998                                              1.30
                    June 30, 1998                                               1.05
                    September 30, 1998                                          1.00
                    December 31, 1998                                           1.00
                    March 31, 1999                                              1.15
                    June 30, 1999                                               1.30
                    September 30, 1999                                          1.35

                    Each Rolling Period                                         Ratio
                    -------------------                                         -----
                    thereafter                                                  2.50
                    ----------
</TABLE>


                                      -2-
<PAGE>   3


              Section 5. Amendment of Section 5.03(c) of the Original Agreement.
Section 5.03(c) of the Original Agreement is hereby amended to read in its
entirety as follows:

              (c) Fixed Charge Coverage Ratio. Maintain a Fixed Charge Coverage
       Ratio of not less than the ratio for each Rolling Period indicated below:
<TABLE>

                    <S>                                                         <C>
                    Each Rolling Period during
                    --------------------------
                    the period beginning January 1,                             Ratio
                    -------------------------------                             -----
                    1997 through September 30, 1997                             1.05
                    -------------------------------


                    Each Rolling Period ending                                  Ratio
                    --------------------------                                  -----

                    December 31, 1997                                           1.00
                    March 31, 1998                                              0.80
                    June 30, 1998                                               0.75
                    September 30, 1998                                          0.75
                    December 31, 1998                                           0.75
                    March 31, 1999                                              0.90
                    June 30, 1999                                               0.95
                    September 30, 1999                                          1.00

                    Each Rolling Period during
                    --------------------------
                    the Fiscal Years ending                                     Ratio
                    -----------------------                                     -----
                    September 30, 2000                                          1.15
                    ------------------

                    Each Rolling Period                                         Ratio
                    -------------------                                         -----
                    thereafter                                                  1.20
                    ----------


</TABLE>

              Section 6. Amendment of Section 5.03(d) of the Original Agreement.
Section 5.03(d) of the Original Agreement is hereby amended to read in its
entirety as follows:

              (d) Leverage Ratio. Maintain a Leverage Ratio of not greater than
       the ratio for each Rolling Period indicated below:
<TABLE>

                    <S>                                                         <C>
                    Each Rolling Period ending                                  Ratio
                    --------------------------                                  -----

                    December 31, 1996                                           5.25
                    March 31, 1997                                              6.35
                    June 30, 1997                                               7.00
                    September 30, 1997                                          7.00
                    December 31, 1997                                           7.00
                    March 31, 1998                                              8.25
                    June 30, 1998                                               9.25
                    September 30, 1998                                          9.75
                    December 31, 1998                                           9.75

</TABLE>


                                      -3-
<PAGE>   4

<TABLE>

                    <S>                                                         <C>
                    March 31, 1999                                              8.25
                    June 30, 1999                                               7.50
                    September 30, 1999                                          7.00

                    Each Rolling Period during
                    --------------------------
                    the Fiscal Years ending                                     Ratio
                    -----------------------                                     -----

                    September 30, 2000                                          4.00
                    September 30, 2001                                          3.50

                    Each Rolling Period                                         Ratio
                    -------------------                                         -----
                    thereafter                                                  3.00
                    ----------
</TABLE>

              Section 7. Amendment of Section 5.03(e) of the Original Agreement.
Section 5.03(e) of the Original Agreement is hereby amended to read in its
entirety as follows:

              (e) Senior Debt Leverage Ratio. Maintain a Senior Debt Leverage
       Ratio of not greater than the ratio for each Rolling Period indicated
       below:
<TABLE>
<CAPTION>

                    <S>                                                         <C>
                    Each Rolling Period ending                                  Ratio
                    --------------------------                                  -----

                    March 31, 1997                                              3.50
                    June 30, 1997                                               3.50
                    September 30, 1997                                          3.50
                    December 31, 1997                                           3.50
                    March 31, 1998                                              3.50
                    June 30, 1998                                               4.00
                    September 30, 1998                                          4.25
                    December 31, 1998                                           4.25
                    March 31, 1999                                              3.50
                    June 30, 1999                                               3.25

                    Each Rolling Period                                         Ratio
                    -------------------                                         -----
                    thereafter                                                  3.00
                    ----------
</TABLE>

              Section 8. Amendment of Section 5.04(e) of the Original Agreement.
Section 5.04(e) of the Original Agreement is hereby amended by (a) deleting the
word "and" at the end of clause (xviii) thereof, (b) replacing the period at the
end of clause (xix) thereof with "; and" and (c) adding a new clause (xx) to
read in its entirety as follows:

              (xx) investments resulting from purchases after June 30, 1998 of
       shares of Holdco Common Stock pursuant to put options arising under the
       ESOP or the Old ESOP but only to the extent such purchases are required
       by (A) the provisions of the ESOP or the Old ESOP, as the case may be, as
       in effect on January 1, 1997 and (B) Section 409(h)(1)(B) of the Code and
       the regulations thereunder.


                                      -4-
<PAGE>   5

              Section 9. Limitations. The amendments set forth herein are
limited precisely as written and shall not (a) be deemed to be a consent to, or
a waiver or modification of, any other term or condition of any of the Financing
Documents or (b) except as expressly set forth herein, prejudice any right or
rights which the Lenders may now have or may have in the future under or in
connection with any of the Financing Documents or any of the other documents or
instruments referred to therein. Except as expressly modified hereby or by
express written amendments thereof, each of the Financing Documents and each of
the other documents and instruments executed in connection with any of the
foregoing are and shall remain in full force and effect. In the event of a
conflict between this First Amendment and any of the foregoing documents, the
terms of this First Amendment shall be controlling.

              Section 10. Conditions Precedent and Effectiveness. This First
Amendment shall not be effective unless this First Amendment has been executed
and delivered by the Required Lenders.

              Section 11. Representations and Warranties. The Company hereby
represents and warrants to the Administrative Agent, the Documentation Agent and
each of the Lenders that (a) except as affected by the transactions contemplated
in the Original Agreement and this First Amendment, each of the representations
and warranties made by the Company and the Subsidiary Guarantors in or pursuant
to each of the Financing Documents is true and correct in all material respects
as of the First Amendment Effective Date, as if made on and as of such date,
except for any representations and warranties made as of a specified date, which
are true and correct in all material respects as of such specified date and (b)
no Default or Event of Default has occurred and is continuing as of the First
Amendment Effective Date.

              Section 12. Adoption, Ratification and Confirmation of Original
Agreement. Each of the Company, the Administrative Agent, the Documentation
Agent and each of the Lenders signatories hereto hereby adopts, ratifies and
confirms the Original Agreement, as amended hereby, and acknowledges and agrees
that the Original Agreement, as amended hereby, is and remains in full force and
effect.

              Section 13. Ratification and Affirmation of Subsidiary Guaranty.
Each of the Subsidiary Guarantors hereby expressly (a) acknowledges the terms of
this First Amendment, (b) acknowledges, renews and extends its continued
liability under the Guaranty Agreement to which it is a party and agrees that
such Guaranty Agreement remains in full force and effect and (c) agrees with the
Administrative Agent, the Documentation Agent, each Lender and each Issuing Bank
to promptly pay when due all amounts owing or to be owing by it under such
Guaranty Agreement pursuant to the terms and conditions thereof.

              Section 14. Payment of Expenses. The Company agrees, whether or
not the transactions contemplated hereby shall be consummated, to reimburse and
save the Administrative Agent and the Documentation Agent harmless from and
against liability for the payment of all reasonable out-of-pocket costs and
expenses arising in connection with the preparation, execution, delivery,
amendment, modification, waiver and enforcement of, or the



                                      -5-

<PAGE>   6
preservation of any rights under this First Amendment, including, without
limitation, the reasonable fees and expenses of any local or other counsel for
the Administrative Agent, and all stamp taxes (including interest and penalties,
if any), recording taxes and fees, filing taxes and fees and other charges which
may be payable in respect of, or in respect of any modification of, any of the
Financing Documents. The provisions of this Section shall survive the
termination of the Original Agreement and the repayment of the Loans.

              Section 15. Governing Law. THIS FIRST AMENDMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND
BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK (INCLUDING SECTION 5-1401 OF
THE NEW YORK GENERAL OBLIGATION LAW, OR ANY SIMILAR SUCCESSOR PROVISIONS
THERETO, BUT EXCLUDING ALL OTHER CONFLICT-OF-LAWS RULES) AND TO THE EXTENT
CONTROLLING, LAWS OF THE UNITED STATES OF AMERICA.

              Section 16. Descriptive Headings, Etc. The descriptive headings of
the several sections of this First Amendment are inserted for convenience only
and shall not be deemed to affect the meaning or construction of any of the
provisions hereof.

              Section 17. Entire Agreement. This First Amendment and the
documents referred to herein represent the entire understanding of the parties
hereto regarding the subject matter hereof and supersede all prior and
contemporaneous oral and written agreements of the parties hereto with respect
to the subject matter hereof.

              Section 18. Counterparts. This First Amendment may be executed in
any number of counterparts (including by telecopy) and by different parties on
separate counterparts and all of such counterparts shall together constitute one
and the same instrument.


              IN WITNESS WHEREOF, the parties hereto have caused this First
Amendment to be duly executed and delivered by their respective duly authorized
officers as of the First Amendment Effective Date.

COMPANY:                             STERLING CHEMICALS, INC.



                                     By:
                                         ---------------------------------------
                                         Gary M. Spitz, Vice President - Finance
                                               and Chief Financial Officer



                                      -6-
<PAGE>   7

ADMINISTRATIVE AGENT                   CHASE BANK OF TEXAS,
DOCUMENTATION AGENT                    NATIONAL ASSOCIATION,
AND THE LENDERS:                       Individually and as Administrative Agent



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       CREDIT SUISSE FIRST BOSTON,
                                       Individually and as Documentation Agent



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       ABN AMRO BANK N.V.
                                       Houston Agency

                                       By:   ABN AMRO North America, Inc.,
                                             as Agent



                                             By:
                                                --------------------------------
                                             Printed Name:
                                                          ----------------------
                                             Title:
                                                   -----------------------------


                                             By:
                                                 -------------------------------
                                             Printed Name:
                                                          ----------------------
                                             Title:
                                                   -----------------------------



                                      -7-
<PAGE>   8

                                       THE BANK OF NOVA SCOTIA



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------

                                       BANK OF SCOTLAND



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------

                                       BHF-BANK AKTIENGESELLSCHAFT



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------


                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                             -----------------------------------

                                       CIBC, INC.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------


                                      -8-
<PAGE>   9

                                       CREDIT LYONNAIS NEW YORK BRANCH



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       FIRST SOURCE FINANCIAL LLP

                                       By:   First Source Financial, Inc.,
                                             as its Agent/Manager



                                             By:
                                                --------------------------------
                                             Printed Name:
                                                          ----------------------
                                             Title:
                                                    ----------------------------

                                       THE FIRST NATIONAL BANK OF CHICAGO



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------

                                       THE CIT GROUP/BUSINESS CREDIT, INC.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------

                                       COMERICA BANK



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------


                                      -9-
<PAGE>   10

                                       CREDITANSTALT CORPORATE FINANCE, INC.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------


                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       HIBERNIA NATIONAL BANK



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       MERITA BANK LTD
                                       New York Branch



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------


                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------



                                      -10-
<PAGE>   11

                                       NATIONAL BANK OF CANADA



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------


                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       THE LONG-TERM CREDIT BANK OF JAPAN
                                       LIMITED NEW YORK BRANCH



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       OCTAGON CREDIT INVESTORS LOAN
                                       PORTFOLIO (a unit of The Chase Manhattan
                                       Bank)



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       MASSACHUSETTS MUTUAL LIFE INSURANCE
                                       COMPANY



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------



                                      -11-

<PAGE>   12

                                       MERRILL LYNCH SENIOR FLOATING RATE
                                       FUND, INC.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------


                                       ML CBO IV (CAYMAN) LTD.

                                       By:   Protective Asset Management L.L.C.,
                                             as Collateral Manager



                                             By:
                                                --------------------------------
                                             Printed Name:
                                                          ----------------------
                                             Title:
                                                   -----------------------------

                                       VAN KAMPEN AMERICA CAPITAL PRIME RATE
                                       INCOME TRUST



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       PARIBAS CAPITAL FUNDING LLC



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------


                                      -12-
<PAGE>   13

                                       RESTRUCTURED OBLIGATIONS BACKED BY
                                       SENIOR ASSETS B.V.

                                       By:   ABN Trustcompany (Nederland) B.V.,
                                             its Managing Director



                                             By:
                                                --------------------------------
                                             Printed Name:
                                                          ----------------------
                                             Title:
                                                   -----------------------------


                                             By:
                                                --------------------------------
                                             Printed Name:
                                                           ---------------------
                                             Title:
                                                    ----------------------------

                                       AERIES FINANCE LTD.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       CAPTIVA FINANCE LTD.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                    ----------------------------
                                       Title:
                                              ----------------------------------

                                       CAPTIVA II FINANCE LTD.



                                       By:
                                          --------------------------------------
                                       Printed Name:
                                                     ---------------------------
                                       Title:
                                              ----------------------------------


                                      -13-

<PAGE>   14

                                     CERES FINANCE LTD.



                                     By:
                                        ----------------------------------------
                                     Printed Name:
                                                   -----------------------------
                                     Title:
                                            ------------------------------------

                                     MERRILL LYNCH PRIME RATE PORTFOLIO

                                     By:   Merrill Lynch Asset Management, L.P.,
                                             as Investment Advisor



                                           By:
                                              ----------------------------------
                                           Printed Name:
                                                         -----------------------
                                           Title:
                                                 -------------------------------

                                     SKANDINAVISKA ENSKILDA BANKEN
                                     CORPORATION



                                     By:
                                        ----------------------------------------
                                     Printed Name:
                                                  ------------------------------
                                     Title:
                                            ------------------------------------

                                     THE CHASE MANHATTAN BANK



                                     By:
                                        ----------------------------------------
                                     Printed Name:
                                                  ------------------------------
                                     Title:
                                           -------------------------------------




                                      -14-
<PAGE>   15




SUBSIDIARY GUARANTORS:                STERLING CHEMICALS INTERNATIONAL, INC.
                                      STERLING CHEMICALS ENERGY, INC.
                                      STERLING FIBERS, INC.



                                      By:
                                          --------------------------------------
                                          Gary M. Spitz, Vice President


                                      STERLING CANADA, INC.
                                      STERLING PULP CHEMICALS US, INC.
                                      STERLING PULP CHEMICALS, INC.



                                      By:
                                         --------------------------------------
                                         Gary M. Spitz, Vice President - Finance



                                      -15-

<PAGE>   1
                                                                     Exhibit 4.2

                          FIRST SUPPLEMENTAL INDENTURE

              THIS FIRST SUPPLEMENTAL INDENTURE (this "First Supplemental
Indenture") dated as of October 1, 1997 is between STERLING CHEMICALS HOLDINGS,
INC., a Delaware corporation (the "Company"), and STATE STREET BANK AND TRUST
COMPANY, as Trustee (in such capacity, the "Trustee").

                             PRELIMINARY STATEMENTS

       1.     The Company and Fleet National Bank, as Trustee (the "Initial
              Trustee"), entered into that certain Indenture dated as of August
              15, 1996 (the "Indenture") providing, among other things, for the
              issuance of the Company's 13 1/2% Senior Secured Discount Notes
              Due 2008 in the aggregate principal amount of up to $191,751,000
              (the "Discount Notes").

       2.     The Trustee has replaced the Initial Trustee as the "Trustee"
              under the Indenture.

       3.     Pursuant to Section 10.01 of the Indenture, the Company and the
              Trustee may amend or supplement the Indenture without the consent
              of any Holder of a Discount Note to, among other things, cure any
              ambiguity, omission, defect or inconsistency.

       4.     The Company has determined that the definition of "Consolidated
              Interest Expense" appearing in Section 1.01 of the Indenture
              contains a defect due to the omission of the words "of Restricted
              Subsidiaries" in clause (vii) of such definition.

       5.     Pursuant to Section 10.01 of the Indenture, upon the request of
              the Company accompanied by a resolution of the Board of Directors
              of the Company authorizing the execution of any such amended or
              supplemental Indenture, and upon receipt of certain documents by
              the Trustee, the Trustee is required to join with the Company in
              the execution of any amended or supplemental Indenture authorized
              or permitted by the terms of the Indenture.

       6.     The Board of Directors of the Company has authorized the execution
              of this First Supplemental Indenture and, simultaneously with and
              as a condition to the execution of this First Supplemental
              Indenture by the Trustee, the Company is delivering to the Trustee
              resolutions of the Board of Directors of the Company authorizing
              the execution of this First Supplemental Indenture and an
              Officers' Certificate and Opinion of Counsel, each in the form
              required by the Indenture and satisfactory to the Trustee.



<PAGE>   2


       7.     All acts and things necessary to make the Indenture, as
              supplemented and modified hereby, a valid, binding and legal
              agreement according to its terms have been done and performed.

              NOW, THEREFORE, in consideration of the premises and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Company covenants and agrees with the Trustee, for the equal
and proportionate benefit of the respective Holders from time to time of the
Discount Notes, as follows:


                                    ARTICLE I

                             AMENDMENT OF INDENTURE

              Clause (vii) of the definition of "Consolidated Interest Expense"
appearing in Section 1.01 of the Indenture is hereby amended to read in its
entirety as follows: "(vii) Preferred Stock dividends in respect of all
Redeemable Stock of Holdings and all Preferred Stock of Restricted Subsidiaries
held by Persons other than Holdings or a Wholly Owned Subsidiary".


                                   ARTICLE II

                                   THE TRUSTEE

              The Trustee hereby accepts the trusts declared and provided in
this First Supplemental Indenture, upon the terms and conditions contained in
the Indenture as amended hereby. All of the provisions of the Indenture with
respect to the rights, privileges, immunities, powers and duties of the Trustee
shall be applicable in respect of this First Supplemental Indenture as fully and
with the same effect as if set forth herein in full. The Trustee shall not be
responsible for and makes no representation as to the validity or adequacy of
this First Supplemental Indenture, the authorization or permissibility of this
First Supplemental Indenture pursuant to the terms of the Indenture, the due
execution hereof by the Company or for or in respect of the recitals or
statements contained herein (other than the statements contained in the first
sentence of this Article II), all of such recitals and statements being made
solely by the Company. The Trustee shall not be responsible in any manner to
determine the correctness of provisions contained in this First Supplemental
Indenture.




                                       -2-

<PAGE>   3


                                   ARTICLE III

                     EFFECT OF EXECUTION AND DELIVERY HEREOF

              From and after the execution and delivery of this First
Supplemental Indenture, (i) the Indenture shall be deemed to be amended and
modified as provided herein, (ii) this First Supplemental Indenture shall form a
part of the Indenture, (iii) except as modified and amended by this First
Supplemental Indenture, the Indenture shall continue in full force and effect,
and (iv) every Holder of Discount Notes heretofore and hereafter authenticated
and delivered under the Indenture shall be bound by this First Supplemental
Indenture.


                                   ARTICLE IV

                            MISCELLANEOUS PROVISIONS

              Section 4.01 Defined Terms. Capitalized terms used but not defined
in this First Supplemental Indenture shall have the respective meanings ascribed
to such terms in the Indenture.

              Section 4.02 Headings. The headings of the Articles and Sections
of this First Supplemental Indenture have been inserted for convenience only,
and shall not, for any reason, be deemed to be part of this First Supplemental
Indenture and shall in no way modify or restrict any of the terms or provisions
hereof.

              Section 4.03 Counterparts. This First Supplemental Indenture may
be executed in any number of counterparts and by the different parties hereto on
separate counterparts, each of which when so executed and delivered shall be an
original, but all of which shall together constitute one and the same
instrument.

              Section 4.04 Successors and Assigns. All agreements of the Company
contained in this First Supplemental Indenture shall bind the Company and its
successors. All agreements of the Trustee in this First Supplemental Indenture
shall bind the Trustee and its successors. This First Supplemental Indenture
shall be binding upon and inure to the benefit of and be enforceable by the
Holders of any Discount Notes then Outstanding.

              Section 4.05 Governing Law. THIS FIRST SUPPLEMENTAL INDENTURE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
NEW YORK WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICT OF LAW TO
THE EXTENT THAT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE
REQUIRED THEREBY.




                                       -3-

<PAGE>   4


              IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed, and their respective corporate seals
to be hereunto affixed and attested, all as of the day and year first above
written.

                                       STERLING CHEMICALS HOLDINGS, INC.

             [SEAL]

                                       By: /s/ ROBERT W. ROTEN
                                           -------------------------------------
                                           Robert W. Roten
                                           President and Chief Executive Officer


ATTEST:



By: /s/ STEWART H. YONTS
   -----------------------------------
    Stewart H. Yonts
    Treasurer and Assistant Secretary




                                       STATE STREET BANK AND TRUST COMPANY,
                                         AS TRUSTEE

             [SEAL]

                                       By: /s/ MICHAEL M. HOPKINS
                                          --------------------------------------
                                       Printed Name: Michael M. Hopkins
                                                     ---------------------------
                                       Title: Vice President
                                              ----------------------------------



                                      -4-

<PAGE>   1
                                                                     Exhibit 4.3

                          SECOND SUPPLEMENTAL INDENTURE

              THIS SECOND SUPPLEMENTAL INDENTURE (this "Second Supplemental
Indenture") dated as of March 16, 1998 is between STERLING CHEMICALS HOLDINGS,
INC., a Delaware corporation (the "Company"), and STATE STREET BANK AND TRUST
COMPANY, as Trustee (in such capacity, the "Trustee").

                             PRELIMINARY STATEMENTS

       1.     The Company and Fleet National Bank, as Trustee (the "Initial
              Trustee"), entered into that certain Indenture dated as of August
              15, 1996 (as amended, the "Indenture") providing, among other
              things, for the issuance of the Company's 13 1/2% Senior Secured
              Discount Notes Due 2008 in the aggregate principal amount of up to
              $191,751,000 (the "Discount Notes").

       2.     The Trustee has replaced the Initial Trustee as the "Trustee"
              under the Indenture.

       3.     Pursuant to Section 10.01 of the Indenture, the Company and the
              Trustee may amend or supplement the Indenture without the consent
              of any Holder of a Discount Note to, among other things, cure any
              ambiguity, omission, defect or inconsistency.

       4.     The Company has determined that Section 5.05(b)(v) of the
              Indenture contains a defect in that it fails to permit the Company
              or any of its Restricted Subsidiaries to repurchase shares of the
              common stock of the Company that have been distributed to
              participants and beneficiaries of a terminated employee stock
              ownership plan of the Company and Sterling Chemicals, Inc. which
              was in existence as of the date of the Indenture, as required by
              the terms of such plan and applicable law, while permitting
              repurchases under similar circumstances from participants and
              beneficiaries of Sterling Chemicals, Inc.'s current employee stock
              ownership plan.

       5.     Pursuant to Section 10.01 of the Indenture, upon the request of
              the Company accompanied by a resolution of the Board of Directors
              of the Company authorizing the execution of any such amended or
              supplemental Indenture, and upon receipt of certain documents by
              the Trustee, the Trustee is required to join with the Company in
              the execution of any amended or supplemental Indenture authorized
              or permitted by the terms of the Indenture.

       6.     The Board of Directors of the Company has authorized the execution
              of this Second Supplemental Indenture and, simultaneously with and
              as a condition to the execution of this Second Supplemental
              Indenture by the Trustee, the Company is delivering to the Trustee
              resolutions of the Board of Directors of the Company authorizing
              the execution of this Second Supplemental Indenture and an
              Officers' Certificate and Opinion of Counsel, each in the form
              required by the Indenture and satisfactory to the Trustee.


<PAGE>   2
       7.     All acts and things necessary to make the Indenture, as
              supplemented and modified hereby, a valid, binding and legal
              agreement according to its terms have been done and performed.

              NOW, THEREFORE, in consideration of the premises and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Company covenants and agrees with the Trustee, for the equal
and proportionate benefit of the respective Holders from time to time of the
Discount Notes, as follows:

                                    ARTICLE I

                             Amendment of Indenture

              Clause (v) of Section 5.05(b) of the Indenture is hereby amended
to read in its entirety as follows:

              (v) repurchases of common stock of Holdings distributed to
       participants and beneficiaries of any employee stock ownership plan of
       Holdings or any of its Restricted Subsidiaries which was in effect as of
       the Issue Date as required by and in accordance with the terms thereof
       and Section 409(h)(1)(B) of the Code and the regulations thereunder;
       provided, however, that such amount shall be excluded in the calculation
       of the amount of Restricted Payments;

                                   ARTICLE II

                                   The Trustee

              The Trustee hereby accepts the trusts declared and provided in
this Second Supplemental Indenture, upon the terms and conditions contained in
the Indenture as amended hereby. All of the provisions of the Indenture with
respect to the rights, privileges, immunities, powers and duties of the Trustee
shall be applicable in respect of this Second Supplemental Indenture as fully
and with the same effect as if set forth herein in full. The Trustee shall not
be responsible for and makes no representation as to the validity or adequacy of
this Second Supplemental Indenture, the authorization or permissibility of this
Second Supplemental Indenture pursuant to the terms of the Indenture, the due
execution hereof by the Company or for or in respect of the recitals or
statements contained herein (other than the statements contained in the first
sentence of this Article II), all of such recitals and statements being made
solely by the Company. The Trustee shall not be responsible in any manner to
determine the correctness of provisions contained in this Second Supplemental
Indenture.


                                      -2-
<PAGE>   3



                                   ARTICLE III

                     Effect of Execution and Delivery Hereof

              From and after the execution and delivery of this Second
Supplemental Indenture, (i) the Indenture shall be deemed to be amended and
modified as provided herein, (ii) this Second Supplemental Indenture shall form
a part of the Indenture, (iii) except as modified and amended by this Second
Supplemental Indenture, the Indenture shall continue in full force and effect,
and (iv) every Holder of Discount Notes heretofore and hereafter authenticated
and delivered under the Indenture shall be bound by this Second Supplemental
Indenture.

                                   ARTICLE IV

                            Miscellaneous Provisions

              Section 4.01 Defined Terms. Capitalized terms used but not defined
in this Second Supplemental Indenture shall have the respective meanings
ascribed to such terms in the Indenture.

              Section 4.02 Headings. The headings of the Articles and Sections
of this Second Supplemental Indenture have been inserted for convenience only,
and shall not, for any reason, be deemed to be part of this Second Supplemental
Indenture and shall in no way modify or restrict any of the terms or provisions
hereof.

              Section 4.03 Counterparts. This Second Supplemental Indenture may
be executed in any number of counterparts and by the different parties hereto on
separate counterparts, each of which when so executed and delivered shall be an
original, but all of which shall together constitute one and the same
instrument.

              Section 4.04 Successors and Assigns. All agreements of the Company
contained in this Second Supplemental Indenture shall bind the Company and its
successors. All agreements of the Trustee in this Second Supplemental Indenture
shall bind the Trustee and its successors. This Second Supplemental Indenture
shall be binding upon and inure to the benefit of and be enforceable by the
Holders of any Discount Notes then Outstanding.

              Section 4.05 Governing Law. THIS SECOND SUPPLEMENTAL INDENTURE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
NEW YORK WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICT OF LAW TO
THE EXTENT THAT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE
REQUIRED THEREBY.


                                      -3-
<PAGE>   4


              IN WITNESS WHEREOF, the parties hereto have caused this Second
Supplemental Indenture to be duly executed, and their respective corporate seals
to be hereunto affixed and attested, all as of the day and year first above
written.

                                      STERLING CHEMICALS HOLDINGS, INC.

             [SEAL]

                                      By:   /s/ ROBERT W. ROTEN
                                           -------------------------------------
                                           Robert W. Roten
                                           President and Chief Executive Officer


ATTEST:



By: /s/ GARY M. SPITZ
   ----------------------------------------------
      Gary M. Spitz
      Vice President and Chief Financial Officer




                                      STATE STREET BANK AND TRUST COMPANY,
                                        AS TRUSTEE

             [SEAL]

                                      By: /s/ MICHAEL M. HOPKINS
                                         -------------------------------------
                                      Printed Name: Michael M. Hopkins
                                                    --------------------------
                                      Title:   Vice President
                                              --------------------------------



                                      -4-

<PAGE>   1
                                                                     Exhibit 4.4

                          FIRST SUPPLEMENTAL INDENTURE

              THIS FIRST SUPPLEMENTAL INDENTURE (this "First Supplemental
Indenture") dated as of October 1, 1997 is between STERLING CHEMICALS, INC., a
Delaware corporation (the "Company"), and STATE STREET BANK AND TRUST COMPANY,
as Trustee (in such capacity, the "Trustee").

                             PRELIMINARY STATEMENTS

       1.     The Company and Fleet National Bank, as Trustee (the "Initial
              Trustee"), entered into that certain Indenture dated as of August
              15, 1996 (the "Indenture") providing, among other things, for the
              issuance of the Company's 11-3/4% Senior Subordinated Notes Due
              2006 in the aggregate principal amount of up to $275,000,000 (the
              "Notes").

       2.     The Trustee has replaced the Initial Trustee as the "Trustee"
              under the Indenture.

       3.     Pursuant to Section 10.01 of the Indenture, the Company and the
              Trustee may amend or supplement the Indenture without the consent
              of any Holder of a Note to, among other things, cure any
              ambiguity, omission, defect or inconsistency.

       4.     The Company has determined that the definition of "Consolidated
              Interest Expense" appearing in Section 1.01 of the Indenture
              contains a defect due to the omission of the words "of Restricted
              Subsidiaries" in clause (vii) of such definition.

       5.     Pursuant to Section 10.01 of the Indenture, upon the request of
              the Company accompanied by a resolution of the Board of Directors
              of the Company authorizing the execution of any such amended or
              supplemental Indenture, and upon receipt of certain documents by
              the Trustee, the Trustee is required to join with the Company in
              the execution of any amended or supplemental Indenture authorized
              or permitted by the terms of the Indenture.

       6.     The Board of Directors of the Company has authorized the execution
              of this First Supplemental Indenture and, simultaneously with and
              as a condition to the execution of this First Supplemental
              Indenture by the Trustee, the Company is delivering to the Trustee
              resolutions of the Board of Directors of the Company authorizing
              the execution of this First Supplemental Indenture and an
              Officers' Certificate and Opinion of Counsel, each in the form
              required by the Indenture and satisfactory to the Trustee.

       7.     All acts and things necessary to make the Indenture, as
              supplemented and modified hereby, a valid, binding and legal
              agreement according to its terms have been done and performed.




<PAGE>   2


              NOW, THEREFORE, in consideration of the premises and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Company covenants and agrees with the Trustee, for the equal
and proportionate benefit of the respective Holders from time to time of the
Notes, as follows:


                                    ARTICLE I

                             AMENDMENT OF INDENTURE

              Clause (vii) of the definition of "Consolidated Interest Expense"
appearing in Section 1.01 of the Indenture is hereby amended to read in its
entirety as follows: "(vii) Preferred Stock dividends in respect of all
Redeemable Stock of Chemicals and all Preferred Stock of Restricted Subsidiaries
held by Persons other than Chemicals or a Wholly Owned Subsidiary".


                                   ARTICLE II

                                   THE TRUSTEE

              The Trustee hereby accepts the trusts declared and provided in
this First Supplemental Indenture, upon the terms and conditions contained in
the Indenture as amended hereby. All of the provisions of the Indenture with
respect to the rights, privileges, immunities, powers and duties of the Trustee
shall be applicable in respect of this First Supplemental Indenture as fully and
with the same effect as if set forth herein in full. The Trustee shall not be
responsible for and makes no representation as to the validity or adequacy of
this First Supplemental Indenture, the authorization or permissibility of this
First Supplemental Indenture pursuant to the terms of the Indenture, the due
execution hereof by the Company or for or in respect of the recitals or
statements contained herein (other than the statements contained in the first
sentence of this Article II), all of such recitals and statements being made
solely by the Company. The Trustee shall not be responsible in any manner to
determine the correctness of provisions contained in this First Supplemental
Indenture.


                                   ARTICLE III

                     EFFECT OF EXECUTION AND DELIVERY HEREOF

              From and after the execution and delivery of this First
Supplemental Indenture, (i) the Indenture shall be deemed to be amended and
modified as provided herein, (ii) this First Supplemental Indenture shall form a
part of the Indenture, (iii) except as modified and amended by this First
Supplemental Indenture, the Indenture shall continue in full force and effect,
and (iv) every


                                       -2-

<PAGE>   3


Holder of Notes heretofore and hereafter authenticated and delivered under the
Indenture shall be bound by this First Supplemental Indenture.


                                   ARTICLE IV

                            MISCELLANEOUS PROVISIONS

              Section 4.01 Defined Terms. Capitalized terms used but not defined
in this First Supplemental Indenture shall have the respective meanings ascribed
to such terms in the Indenture.

              Section 4.02 Headings. The headings of the Articles and Sections
of this First Supplemental Indenture have been inserted for convenience only,
and shall not, for any reason, be deemed to be part of this First Supplemental
Indenture and shall in no way modify or restrict any of the terms or provisions
hereof.

              Section 4.03 Counterparts. This First Supplemental Indenture may
be executed in any number of counterparts and by the different parties hereto on
separate counterparts, each of which when so executed and delivered shall be an
original, but all of which shall together constitute one and the same
instrument.

              Section 4.04 Successors and Assigns. All agreements of the Company
contained in this First Supplemental Indenture shall bind the Company and its
successors. All agreements of the Trustee in this First Supplemental Indenture
shall bind the Trustee and its successors. This First Supplemental Indenture
shall be binding upon and inure to the benefit of and be enforceable by the
Holders of any Notes then Outstanding.

              Section 4.05 Governing Law. THIS FIRST SUPPLEMENTAL INDENTURE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
NEW YORK WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICT OF LAW TO
THE EXTENT THAT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE
REQUIRED THEREBY.




                                       -3-

<PAGE>   4


              IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed, and their respective corporate seals
to be hereunto affixed and attested, all as of the day and year first above
written.

                                       STERLING CHEMICALS, INC.

              [SEAL]

                                       By: /s/ ROBERT W. ROTEN
                                           -------------------------------------
                                           Robert W. Roten
                                           President and Chief Executive Officer

ATTEST:



By: /s/ STEWART H. YONTS
   --------------------------------------
    Stewart H. Yonts
    Treasurer and Assistant Secretary




                                       STATE STREET BANK AND TRUST COMPANY,
                                         AS TRUSTEE

              [SEAL]

                                       By: /s/ MICHAEL M. HOPKINS
                                          --------------------------------------
                                       Printed Name: Michael M. Hopkins
                                                     ---------------------------
                                       Title: Vice President
                                             -----------------------------------


                                      -4-

<PAGE>   1
                                                                     Exhibit 4.5

                          SECOND SUPPLEMENTAL INDENTURE

              THIS SECOND SUPPLEMENTAL INDENTURE (this "Second Supplemental
Indenture") dated as of March 16, 1998 is between STERLING CHEMICALS, INC., a
Delaware corporation (the "Company"), and STATE STREET BANK AND TRUST COMPANY,
as Trustee (in such capacity, the "Trustee").

                             PRELIMINARY STATEMENTS

       1.     The Company and Fleet National Bank, as Trustee (the "Initial
              Trustee"), entered into that certain Indenture dated as of August
              15, 1996 (as amended, the "Indenture") providing, among other
              things, for the issuance of the Company's 11 3/4% Senior
              Subordinated Notes Due 2006 in the aggregate principal amount of
              up to $275,000,000 (the "Notes").

       2.     The Trustee has replaced the Initial Trustee as the "Trustee"
              under the Indenture.

       3.     Pursuant to Section 10.01 of the Indenture, the Company and the
              Trustee may amend or supplement the Indenture without the consent
              of any Holder of a Note to, among other things, cure any
              ambiguity, omission, defect or inconsistency.

       4.     The Company has determined that Section 5.05(b)(viii) of the
              Indenture contains a defect in that it fails to permit the Company
              to repurchase shares of common stock of Sterling Chemicals
              Holdings, Inc. that have been distributed to participants and
              beneficiaries of a terminated employee stock ownership plan of the
              Company which was in existence as of the date of the Indenture, as
              required by the terms of such plan and applicable law, while
              permitting repurchases under similar circumstances from
              participants and beneficiaries of the Company's current employee
              stock ownership plan.

       5.     Pursuant to Section 10.01 of the Indenture, upon the request of
              the Company accompanied by a resolution of the Board of Directors
              of the Company authorizing the execution of any such amended or
              supplemental Indenture, and upon receipt of certain documents by
              the Trustee, the Trustee is required to join with the Company in
              the execution of any amended or supplemental Indenture authorized
              or permitted by the terms of the Indenture.

       6.     The Board of Directors of the Company has authorized the execution
              of this Second Supplemental Indenture and, simultaneously with and
              as a condition to the execution of this Second Supplemental
              Indenture by the Trustee, the Company is delivering to the Trustee
              resolutions of the Board of Directors of the Company authorizing
              the execution of this Second Supplemental Indenture and an
              Officers' Certificate and Opinion of Counsel, each in the form
              required by the Indenture and satisfactory to the Trustee.



<PAGE>   2

       7.     All acts and things necessary to make the Indenture, as
              supplemented and modified hereby, a valid, binding and legal
              agreement according to its terms have been done and performed.

              NOW, THEREFORE, in consideration of the premises and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Company covenants and agrees with the Trustee, for the equal
and proportionate benefit of the respective Holders from time to time of the
Notes, as follows:

                                    ARTICLE I

                             Amendment of Indenture

              Clause (viii) of Section 5.05(b) of the Indenture is hereby
amended to read in its entirety as follows:

           (viii) a payment by Chemicals to Holdings or to the ESOP or directly
       by Chemicals to be used to repurchase common stock of Holdings
       distributed to participants and beneficiaries of any employee stock
       ownership plan of Holdings or Chemicals or any of its Restricted
       Subsidiaries which was in effect as of the Issue Date as required by and
       in accordance with the terms thereof as in effect as of the Issue Date
       and Section 409(h)(1)(B) of the Code and the regulations thereunder;
       provided, however, that such amount shall be excluded in the calculation
       of the amount of Restricted Payments;

                                   ARTICLE II

                                   The Trustee

              The Trustee hereby accepts the trusts declared and provided in
this Second Supplemental Indenture, upon the terms and conditions contained in
the Indenture as amended hereby. All of the provisions of the Indenture with
respect to the rights, privileges, immunities, powers and duties of the Trustee
shall be applicable in respect of this Second Supplemental Indenture as fully
and with the same effect as if set forth herein in full. The Trustee shall not
be responsible for and makes no representation as to the validity or adequacy of
this Second Supplemental Indenture, the authorization or permissibility of this
Second Supplemental Indenture pursuant to the terms of the Indenture, the due
execution hereof by the Company or for or in respect of the recitals or
statements contained herein (other than the statements contained in the first
sentence of this Article II), all of such recitals and statements being made
solely by the Company. The Trustee shall not be responsible in any manner to
determine the correctness of provisions contained in this Second Supplemental
Indenture.


                                      -2-
<PAGE>   3

                                   ARTICLE III

                     Effect of Execution and Delivery Hereof

              From and after the execution and delivery of this Second
Supplemental Indenture, (i) the Indenture shall be deemed to be amended and
modified as provided herein, (ii) this Second Supplemental Indenture shall form
a part of the Indenture, (iii) except as modified and amended by this Second
Supplemental Indenture, the Indenture shall continue in full force and effect,
and (iv) every Holder of Notes heretofore and hereafter authenticated and
delivered under the Indenture shall be bound by this Second Supplemental
Indenture.

                                   ARTICLE IV

                            Miscellaneous Provisions

              Section 4.01 Defined Terms. Capitalized terms used but not defined
in this Second Supplemental Indenture shall have the respective meanings
ascribed to such terms in the Indenture.

              Section 4.02 Headings. The headings of the Articles and Sections
of this Second Supplemental Indenture have been inserted for convenience only,
and shall not, for any reason, be deemed to be part of this Second Supplemental
Indenture and shall in no way modify or restrict any of the terms or provisions
hereof.

              Section 4.03 Counterparts. This Second Supplemental Indenture may
be executed in any number of counterparts and by the different parties hereto on
separate counterparts, each of which when so executed and delivered shall be an
original, but all of which shall together constitute one and the same
instrument.

              Section 4.04 Successors and Assigns. All agreements of the Company
contained in this Second Supplemental Indenture shall bind the Company and its
successors. All agreements of the Trustee in this Second Supplemental Indenture
shall bind the Trustee and its successors. This Second Supplemental Indenture
shall be binding upon and inure to the benefit of and be enforceable by the
Holders of any Notes then Outstanding.

              Section 4.05 Governing Law. THIS SECOND SUPPLEMENTAL INDENTURE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
NEW YORK WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICT OF LAW TO
THE EXTENT THAT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE
REQUIRED THEREBY.


                                      -3-
<PAGE>   4


              IN WITNESS WHEREOF, the parties hereto have caused this Second
Supplemental Indenture to be duly executed, and their respective corporate seals
to be hereunto affixed and attested, all as of the day and year first above
written.

                                       STERLING CHEMICALS, INC.

             [SEAL]

                                       By: /s/ ROBERT W. ROTEN
                                           -------------------------------------
                                           Robert W. Roten
                                           President and Chief Executive Officer


ATTEST:



By: /s/ GARY M. SPITZ
    -------------------------------------------
    Gary M. Spitz
    Vice President and Chief Financial Officer




                                       STATE STREET BANK AND TRUST COMPANY,
                                         AS TRUSTEE

             [SEAL]

                                       By: /s/ MICHAEL M. HOPKINS
                                          --------------------------------------
                                       Printed Name: Michael M. Hopkins
                                                     ---------------------------
                                       Title: Vice President
                                              ----------------------------------



                                      -4-

<PAGE>   1
                                                                    Exhibit 4.6

                          FIRST SUPPLEMENTAL INDENTURE

              THIS FIRST SUPPLEMENTAL INDENTURE (this "First Supplemental
Indenture") dated as of March 16, 1998 is between STERLING CHEMICALS, INC., a
Delaware corporation (the "Company"), and STATE STREET BANK AND TRUST COMPANY,
as Trustee (in such capacity, the "Trustee").

                             PRELIMINARY STATEMENTS

       1.     The Company and Fleet National Bank, as Trustee (the "Initial
              Trustee"), entered into that certain Indenture dated as of April
              7, 1997 (the "Indenture") providing, among other things, for the
              issuance of the Company's 11 1/4% Senior Subordinated Notes Due
              2007 in the aggregate principal amount of up to $150,000,000 (the
              "Notes").

       2.     The Trustee has replaced the Initial Trustee as the "Trustee"
              under the Indenture.

       3.     Pursuant to Section 10.01 of the Indenture, the Company and the
              Trustee may amend or supplement the Indenture without the consent
              of any Holder of a Note to, among other things, cure any
              ambiguity, omission, defect or inconsistency.

       4.     The Company has determined that Section 5.05(b)(viii) of the
              Indenture contains a defect in that it fails to permit the Company
              to repurchase shares of common stock of Sterling Chemicals
              Holdings, Inc. that have been distributed to participants and
              beneficiaries of a terminated employee stock ownership plan of the
              Company which was in existence as of the date of the Indenture, as
              required by the terms of such plan and applicable law, while
              permitting repurchases under similar circumstances from
              participants and beneficiaries of the Company's current employee
              stock ownership plan.

       5.     Pursuant to Section 10.01 of the Indenture, upon the request of
              the Company accompanied by a resolution of the Board of Directors
              of the Company authorizing the execution of any such amended or
              supplemental Indenture, and upon receipt of certain documents by
              the Trustee, the Trustee is required to join with the Company in
              the execution of any amended or supplemental Indenture authorized
              or permitted by the terms of the Indenture.

       6.     The Board of Directors of the Company has authorized the execution
              of this First Supplemental Indenture and, simultaneously with and
              as a condition to the execution of this First Supplemental
              Indenture by the Trustee, the Company is delivering to the Trustee
              resolutions of the Board of Directors of the Company authorizing
              the execution of this First Supplemental Indenture and an
              Officers' Certificate and Opinion of Counsel, each in the form
              required by the Indenture and satisfactory to the Trustee.


<PAGE>   2


       7.     All acts and things necessary to make the Indenture, as
              supplemented and modified hereby, a valid, binding and legal
              agreement according to its terms have been done and performed.

              NOW, THEREFORE, in consideration of the premises and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Company covenants and agrees with the Trustee, for the equal
and proportionate benefit of the respective Holders from time to time of the
Notes, as follows:

                                    ARTICLE I

                             Amendment of Indenture

              Clause (viii) of Section 5.05(b) of the Indenture is hereby
amended to read in its entirety as follows:

           (viii) a payment by Sterling to Holdings or to the ESOP or directly
       by Sterling to be used to repurchase common stock of Holdings distributed
       to participants and beneficiaries of any employee stock ownership plan of
       Holdings or Sterling or any of its Restricted Subsidiaries which was in
       effect as of August 21, 1996 as required by and in accordance with the
       terms thereof as in effect as of August 21, 1996 and Section 409(h)(1)(B)
       of the Code and the regulations thereunder; provided, however, that such
       amount shall be excluded in the calculation of the amount of Restricted
       Payments;

                                   ARTICLE II

                                   The Trustee

              The Trustee hereby accepts the trusts declared and provided in
this First Supplemental Indenture, upon the terms and conditions contained in
the Indenture as amended hereby. All of the provisions of the Indenture with
respect to the rights, privileges, immunities, powers and duties of the Trustee
shall be applicable in respect of this First Supplemental Indenture as fully and
with the same effect as if set forth herein in full. The Trustee shall not be
responsible for and makes no representation as to the validity or adequacy of
this First Supplemental Indenture, the authorization or permissibility of this
First Supplemental Indenture pursuant to the terms of the Indenture, the due
execution hereof by the Company or for or in respect of the recitals or
statements contained herein (other than the statements contained in the first
sentence of this Article II), all of such recitals and statements being made
solely by the Company. The Trustee shall not be responsible in any manner to
determine the correctness of provisions contained in this First Supplemental
Indenture.


                                      -2-
<PAGE>   3


                                   ARTICLE III

                     Effect of Execution and Delivery Hereof

              From and after the execution and delivery of this First
Supplemental Indenture, (i) the Indenture shall be deemed to be amended and
modified as provided herein, (ii) this First Supplemental Indenture shall form a
part of the Indenture, (iii) except as modified and amended by this First
Supplemental Indenture, the Indenture shall continue in full force and effect,
and (iv) every Holder of Notes heretofore and hereafter authenticated and
delivered under the Indenture shall be bound by this First Supplemental
Indenture.

                                   ARTICLE IV

                            Miscellaneous Provisions

              Section 4.01 Defined Terms. Capitalized terms used but not defined
in this First Supplemental Indenture shall have the respective meanings ascribed
to such terms in the Indenture.

              Section 4.02 Headings. The headings of the Articles and Sections
of this First Supplemental Indenture have been inserted for convenience only,
and shall not, for any reason, be deemed to be part of this First Supplemental
Indenture and shall in no way modify or restrict any of the terms or provisions
hereof.

              Section 4.03 Counterparts. This First Supplemental Indenture may
be executed in any number of counterparts and by the different parties hereto on
separate counterparts, each of which when so executed and delivered shall be an
original, but all of which shall together constitute one and the same
instrument.

              Section 4.04 Successors and Assigns. All agreements of the Company
contained in this First Supplemental Indenture shall bind the Company and its
successors. All agreements of the Trustee in this First Supplemental Indenture
shall bind the Trustee and its successors. This First Supplemental Indenture
shall be binding upon and inure to the benefit of and be enforceable by the
Holders of any Notes then Outstanding.

              Section 4.05 Governing Law. THIS FIRST SUPPLEMENTAL INDENTURE
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
NEW YORK WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICT OF LAW TO
THE EXTENT THAT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE
REQUIRED THEREBY.


                                      -3-
<PAGE>   4


              IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed, and their respective corporate seals
to be hereunto affixed and attested, all as of the day and year first above
written.

                                       STERLING CHEMICALS, INC.

            [SEAL]

                                       By: /s/ ROBERT W. ROTEN
                                           -------------------------------------
                                           Robert W. Roten
                                           President and Chief Executive Officer


ATTEST:



By:  /s/ GARY M. SPITZ
     -------------------------------------------
     Gary M. Spitz
     Vice President and Chief Financial Officer




                                       STATE STREET BANK AND TRUST COMPANY,
                                         AS TRUSTEE

            [SEAL]

                                       By: /s/ MICHAEL M. HOPKINS
                                          --------------------------------------
                                       Printed Name: Michael M. Hopkins
                                                    ----------------------------
                                       Title: Vice President
                                              ----------------------------------


                                      -4-

<PAGE>   1
                                                                     Exhibit 4.7

                               FIRST AMENDMENT TO
                        STERLING CHEMICALS HOLDINGS, INC.
                             STOCKHOLDERS AGREEMENT

              THIS FIRST AMENDMENT TO STERLING CHEMICALS HOLDINGS, INC.
STOCKHOLDERS AGREEMENT (this "Amendment") dated effective as of December 31,
1997 is by and among STERLING CHEMICALS HOLDINGS, INC., a Delaware corporation
(the "Corporation"), STERLING CHEMICALS, INC. EMPLOYEE STOCK OWNERSHIP TRUST, an
employee stock ownership trust created pursuant to the Sterling Chemicals, Inc.,
Employee Stock Ownership Plan (the "ESOT"), and the other persons and entities
whose signatures appear on the signature pages hereof (the "Other Parties" and,
together with the Corporation and the ESOT, the "Parties"). Capitalized terms
used but not defined herein shall have the respective meanings ascribed to such
terms in the Original Agreement referred to below.

                             PRELIMINARY STATEMENTS

       1.     The Parties, together with certain other Holders, are parties to
              that certain Sterling Chemicals Holdings, Inc. Stockholders
              Agreement dated effective as of August 21, 1996 (the "Original
              Agreement").

       2.     The Parties desire to amend the Original Agreement in certain
              respects in order to, among other things, permit the Holders under
              certain circumstances to transfer certain of their shares of Stock
              by way of gift without first offering such shares of Stock to the
              Corporation, the ESOT or the other Holders.

              NOW, THEREFORE, in consideration of the premises and the mutual
covenants contained herein and in the Original Agreement, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto, intending to be legally bound, hereby agree as
follows:

              Section 1. Amendment of Section 4.6 of the Original Agreement. The
last sentence of Section 4.6 of the Original Agreement is hereby amended to read
in its entirety as follows:

       The Purchase Price of any Shares Subject to the Offer purchased by any
       Eligible Offeree under Sections 3.2 through 3.5 shall be paid in the form
       of a cashier's check or such other form of consideration mutually
       acceptable to the party making the Acquisition Proposal and the
       purchasing Eligible Offerees.

              Section 2. Amendment of Section 5.2(b) of the Original Agreement.
Section 5.2(b) of the Original Agreement is hereby amended by replacing the
phrase "at the election of the Control Offeror" appearing in clause (2) thereof
with the phrase "at the election of the Control Offeree".


<PAGE>   2

              Section 3. Amendment of Section 6 of the Original Agreement.
Section 6 of the Original Agreement is hereby amended by inserting the word
"and" at the end of subsection 6.19 thereof and adding a new subsection 6.20 to
read in its entirety as follows:

              6.20. by any Holder to any person or entity as a gift; provided,
       however, that the aggregate number of shares of Stock that may be
       transferred by any Holder pursuant to this subsection 6.20 during any
       calendar year may not exceed 20,000 (as such number may be adjusted from
       time to time to reflect any stock split, combination of shares,
       recapitalization or other similar event);

              Section 4. Amendment of Section 13.11 of the Original Agreement.
Section 13.11 of the Original Agreement is hereby amended to read in its
entirety as follows:

              13.11. Enforceability. This Agreement shall be enforceable by and
       against the Company, the Holders, the ESOT and their respective spouses,
       guardians, heirs, legatees, executors, legal representatives,
       administrators, and permitted successors and assignees.

              Section 5. Effect of Amendments. Except as amended and modified by
this Amendment, the Original Agreement shall continue in full force and effect.
The Original Agreement and this Amendment shall be read, taken and construed as
one and the same instrument. Upon the effectiveness of this Amendment, each
reference in the Original Agreement to "this Agreement" shall mean and be a
reference to the Original Agreement as amended hereby.

              Section 6. Effectiveness. This Amendment shall not be or become
effective unless and until it has been duly executed and delivered by the
Corporation and Holders constituting a Required Voting Percentage.

              Section 7. Binding Effect. This Amendment shall inure to the
benefit of, and shall be binding upon (i) the Corporation and its successors and
permitted assigns and (ii) the Holders and their respective heirs, legatees,
executors, personal representatives, administrators, successors and permitted
assigns.

              Section 8. Counterparts. This Amendment may be executed in two or
more counterparts, each of which shall be deemed an original but all of which
taken together shall constitute one and the same agreement. It shall not be
necessary in making proof of this Amendment to produce or account for more than
one such counterpart.

              Section 9. Severability. Should any clause, sentence, paragraph,
subsection or Section of this Amendment be judicially declared to be invalid,
unenforceable or void, such decision will not have the effect of invalidating or
voiding the remainder of this Amendment, and the Parties agree that the part or
parts of this Amendment so held to be invalid, unenforceable or void will be
deemed to have been stricken herefrom as if such stricken part or parts had
never been included herein.


                                      -2-
<PAGE>   3

              Section 10. Governing Law. THIS AMENDMENT SHALL BE CONSTRUED AND
ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY,
THE INTERNAL LAWS OF THE STATE OF DELAWARE, WITHOUT REFERENCE TO PRINCIPLES OF
CONFLICTS OF LAW.

              Section 11. Entire Agreement. This Amendment and the Original
Agreement set forth all of the promises, agreements, conditions, understandings,
warranties and representations among the Parties with respect to the matters
cover hereby, and supersede all prior agreements, arrangements and
understandings among the Parties, whether written, oral or otherwise. There are
no promises, agreements, conditions, understandings, warranties or
representations, oral or written, express or implied, among the Parties
concerning the subject matter hereof or thereof except as set forth herein or
therein.

              IN WITNESS WHEREOF, the Parties have executed this Amendment
effective as of the date first written above.


                                      STERLING CHEMICALS HOLDINGS, INC.



                                      By: /s/ DAVID G. ELKINS
                                         ---------------------------------------
                                      Printed Name: David G. Elkins
                                                   -----------------------------
                                      Title: Vice President
                                             -----------------------------------

                                      STERLING CHEMICALS, INC.
                                      EMPLOYEE STOCK OWNERSHIP TRUST

                                      By:  Merrill Lynch, Pierce, Fenner & Smith
                                           Incorporated, solely in its capacity 
                                           as Trustee



                                           By:
                                              ----------------------------------
                                           Printed Name:
                                                         -----------------------
                                           Title:
                                                   -----------------------------



                                      -3-
<PAGE>   4



                                        OTHER PARTIES:


                                        Individual:


                                        /s/ LAURA M. NEUMAN
                                        ----------------------------------------
                                        Printed Name: Laura M. Neuman
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                                --------------------------------



                                      -4-
<PAGE>   5

                                        OTHER PARTIES:


                                        Individual:


                                        /s/ WILLIAM E. STREETMAN
                                        ----------------------------------------
                                        Printed Name: William E. Streetman
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-
<PAGE>   6

                                        OTHER PARTIES:


                                        Individual:


                                        
                                        ----------------------------------------
                                        Printed Name:
                                                     ---------------------------

                                        Entity:

                                        Clipper Capital Associates, Inc.
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By: /s/ EUGENE P. LYNCH
                                            ------------------------------------
                                        Printed Name: Eugene P. Lynch
                                                     ---------------------------
                                        Title: Treasurer & Secretary
                                               ---------------------------------



                                      -4-
<PAGE>   7

                                        OTHER PARTIES:


                                        Individual:


          
                                        ----------------------------------------
                                        Printed Name:
                                                     ---------------------------

                                        Entity:

                                        Chase Equity Associates, L.P.
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By: /s/ GEORGE E. KEITS III
                                            ------------------------------------
                                        Printed Name: George E. Keits III
                                                     ---------------------------
                                        Title: Managing Director and Chief
                                               ---------------------------------
                                               Administrative Officer of Chase
                                               ---------------------------------
                                               Capital Partners, General 
                                               ---------------------------------
                                               Partner
                                               ---------------------------------



                                      -4-
<PAGE>   8

                                        OTHER PARTIES:


                                        Individual:


                                        /s/ J.R. BALL Trustee
                                        ----------------------------------------
                                        Printed Name: J.R. Ball  IRA
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-
<PAGE>   9

                                        OTHER PARTIES:


                                        Individual:


                                        /s/ RAYMOND McLAUGHLIN
                                        ----------------------------------------
                                        Printed Name: Raymond McLaughlin
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-
<PAGE>   10





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ [ILLEGIBLE]
                                        ----------------------------------------
                                        Printed Name:   [ILLEGIBLE]           
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   11





                                        OTHER PARTIES:


                                        Individual:




                                        ----------------------------------------
                                        Printed Name: 
                                                     ---------------------------
                                        Entity:

                                        The CIT Group/Equity Investments, Inc.
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By: /s/ COLBY W. COLLINS
                                           -------------------------------------
                                        Printed Name: Colby W. Collins
                                                     ---------------------------
                                        Title:  Managing Director
                                              ----------------------------------







                                      -4-
<PAGE>   12





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ FRANK A. VANDIVER
                                        ----------------------------------------
                                        Printed Name:   Frank A. Vandiver     
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   13





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ JOHN K. O'CONNOR
                                        ----------------------------------------
                                        Printed Name:   John K. O'Connor      
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------







                                      -4-
<PAGE>   14





                                        OTHER PARTIES:


                                        Individual:




                                        ----------------------------------------
                                        Printed Name:   
                                                     ---------------------------
                                        Entity:

                                        The Rheney Living Trust
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:  /s/ SUSAN O. RHENEY              
                                           -------------------------------------
                                        Printed Name:  Susan O. Rheney        
                                                     ---------------------------
                                        Title:  Trustee                      
                                              ----------------------------------















                                      -4-
<PAGE>   15





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ ALFRED C. GLASSELL, JR.
                                        ----------------------------------------
                                        Printed Name:   Alfred C. Glassell, Jr.
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   16





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ ALLAN R. DRAGONE
                                        ----------------------------------------
                                        Printed Name:   Allan R. Dragone      
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   17





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ SCOTT A. LAWIT
                                        ----------------------------------------
                                        Printed Name:  Scott A. Lawit
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   18





                                        OTHER PARTIES:


                                        Individual:



                                        /s/  JOHN D. HAWKINS
                                        ----------------------------------------
                                        Printed Name:  John D. Hawkins
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   19





                                        OTHER PARTIES:


                                        Individual:



                                        /s/  JOSEPH A. BAJ
                                        ----------------------------------------
                                        Printed Name:  Joseph A. Baj
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   20

                                        OTHER PARTIES:


                                        Individual:



                                        ----------------------------------------
                                        Printed Name:
                                                     ---------------------------

                                        Entity:

                                        Vanderbilt University
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By: /s/ GEORGE B. STADLER
                                            ------------------------------------
                                        Printed Name: George B. Stadler
                                                     ---------------------------
                                        Title: Assistant Treasurer
                                               ---------------------------------



                                      -4-
<PAGE>   21

                                        OTHER PARTIES:


                                        Individual:


                                        
                                        ----------------------------------------
                                        Printed Name:
                                                     ---------------------------

                                        Entity:

                                        The Baylor School
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By: /s/ HUGH W. HUDDLESTON
                                            ------------------------------------
                                        Printed Name: Hugh W. Huddleston
                                                     ---------------------------
                                        Title: Treasurer 3/2/98
                                               ---------------------------------



                                      -4-
<PAGE>   22

<TABLE>

<S>                                                       <C>
                                                          OTHER PARTIES:


                                                          Individual:


                                                          /s/ MINDY LANIGAN
                                                          -----------------------------------
Investor:             Chartwell Capital Investors, L.P.   Printed Name: Mindy Lanigan
                                                                        ---------------------
Its General Partner:  Chartwell Capital Partners, L.P.
                                                          Entity:
Its General Partner:  Chartwell Partners, L.P.
                                                          -----------------------------------
Its General Partner:  Chartwell, Inc.                     (Print Name of Entity)



                                                          By:
                                                             --------------------------------
                                                          Printed Name:
                                                                        ---------------------
                                                          Title:
                                                                 ----------------------------

</TABLE>

                                      -4-
<PAGE>   23

                                        OTHER PARTIES:


                                        Individual:


                                        /s/ SAMUEL Z. CHAMBERLAIN
                                        ----------------------------------------
                                        Printed Name: Samuel Z. Chamberlain
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-
<PAGE>   24

                                        OTHER PARTIES:


                                        Individual:


                                        /s/ DAVID HEANEY
                                        ----------------------------------------
                                        Printed Name:  David Heaney
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-




<PAGE>   25

                                        OTHER PARTIES:


                                        Individual:


                                        /s/ DAVID G. ELKINS     
                                        ----------------------------------------
                                        Printed Name:  David G. Elkins
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-


<PAGE>   26


                                        OTHER PARTIES:


                                        Individual: 

                                        /s/ MICHAEL G. MARK      
                                            DORIS M. MARK
                                        ----------------------------------------
                                        Printed Name:  Michael G. Mark
                                                       Doris M. Mark
                                                     ---------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



                                      -4-

<PAGE>   27

                                        OTHER PARTIES:


                                        Individual: 
                                                    
                                        /s/  RAY W. GRIFFIN, III BY
                                             MARIAN OEHMIG LATIMER, POA
                                        ----------------------------------------
                                        Printed Name:  Ray W. Griffin III by
                                                     ---------------------------
                                         Marian Oehmig Latimer
                                        ----------------------------------------

                                        Entity:

                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:
                                            ------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Title:
                                               ---------------------------------



Address correction:


          8 Bartram Road
          Lookout Mountain, TN 37350



                                      -4-


<PAGE>   28





                                        OTHER PARTIES:


                                        Individual:



                                        /s/  MARIAN OEHMIG LATIMER
                                        ----------------------------------------
                                        Printed Name:  Marian Oehmig Latimer
                                                       -------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------

Address Correction:
     8 Bartram Road
     Lookout Mountain, TN 37350



                                      -4-
<PAGE>   29





                                        OTHER PARTIES:


                                        Individual:



                                        
                                        ----------------------------------------
                                        Printed Name:
                                                      --------------------------
                                        Entity:

                                        Kinkaid Investments Foundation
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:  /s/ JOANNE WILSON
                                           -------------------------------------
                                        Printed Name:  Joanne Wilson          
                                                     ---------------------------
                                        Title:   Assistant Treasurer         
                                              ----------------------------------





                                      -4-
<PAGE>   30





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ MARK DAVIS
                                        ----------------------------------------
                                        Printed Name:  Mark Davis
                                                       -------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   31





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ [ILLEGIBLE]
                                        ----------------------------------------
                                        Printed Name:  [ILLEGIBLE]
                                                       -------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   32





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ MICHAEL J. A. LOBO
                                        ----------------------------------------
                                        Printed Name:  Michael J. A. Lobo

                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   33





                                        OTHER PARTIES:


                                        Individual:



                                        /s/  [ILLEGIBLE]
                                        ----------------------------------------
                                        Printed Name:  
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-
<PAGE>   34





                                        OTHER PARTIES:


                                        Individual:



                                        /s/
                                        ----------------------------------------
                                        Printed Name:
                                                     ---------------------------
                                        Entity:

                                        Koch Capital Services, Inc.
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:   /s/ JOHN C. PITTENGER
                                           -------------------------------------
                                        Printed Name:  John C. Pittenger      
                                                     ---------------------------
                                        Title:    Vice President             
                                              ----------------------------------





                                      -4-
<PAGE>   35





                                        OTHER PARTIES:


                                        Individual:



                                        /s/ FRANK J. HENRDEJS
                                        ----------------------------------------
                                        Printed Name:  Frank J. Henrdejs
                                                     ---------------------------
                                        Entity:

                                        
                                        ----------------------------------------
                                        (Print Name of Entity)



                                        By:                                   
                                           -------------------------------------
                                        Printed Name:                         
                                                     ---------------------------
                                        Title:                               
                                              ----------------------------------





                                      -4-

<PAGE>   1
                                                                    EXHIBIT 10.1


                                   APPENDIX A


                       STERLING CHEMICALS HOLDINGS, INC.

                    OMNIBUS STOCK AWARDS AND INCENTIVE PLAN

                                  (AS AMENDED)


                                  I.  PURPOSE

         The purpose of the STERLING CHEMICALS HOLDINGS, INC. OMNIBUS STOCK
AWARDS AND INCENTIVE PLAN (the "Plan") is to provide a means through which
STERLING CHEMICALS HOLDINGS, INC., a Delaware corporation (the "Company"), and
its Subsidiaries (as defined herein), may attract able persons to enter the
employ of the Company and its Subsidiaries and to provide a means whereby those
employees upon whom the responsibilities of the successful administration and
management of the Company and its Subsidiaries rest, and whose present and
potential contributions to the welfare of the Company and its Subsidiaries are
of importance, can acquire and maintain stock ownership, thereby strengthening
their concern for the welfare of the Company and its Subsidiaries and their
desire to remain in the Company's and its Subsidiaries' employ.  A further
purpose of the Plan is to provide such employees with additional incentive and
reward opportunities designed to enhance the profitable growth of the Company
and its Subsidiaries.  Accordingly, the Plan provides for granting Incentive
Stock Options, Nonqualified Stock Options, Stock Appreciation Rights,
Restricted Stock Awards, Performance Awards, Phantom Stock Awards, or any
combination of the foregoing, as is best suited to the circumstances of the
particular employee as provided herein.

                                II.  DEFINITIONS

         The following definitions shall be applicable throughout the Plan
unless specifically modified by any paragraph:

         (a)     "Affiliates" means any "parent corporation" of the Company and
any "subsidiary" of the Company within the meaning of Code Sections 424(e) and
(f), respectively.

         (b)     "Agreement" means, individually or collectively, any Option
Agreement, Performance Award Agreement, Phantom Stock Award Agreement,
Restricted Stock Agreement and Stock Appreciation Rights Agreement.

         (c)     "Award" means, individually or collectively, any Option,
Restricted Stock Award, Phantom Stock Award, Performance Award or Stock
Appreciation Right.

         (d)     "Board" means the Board of Directors of the Company.

         (e)     "Change of Control" means the occurrence of any of the
following events:  (i) the Company shall not be the surviving entity in any
merger, consolidation or other reorganization (or survives only as a subsidiary
of an entity other than a previously wholly-owned subsidiary of the Company),
(ii) the Company sells, leases or exchanges all or substantially all of its
assets to any other person or entity (other than a wholly-owned subsidiary of
the Company), (iii) the Company is to be dissolved and liquidated, (iv) any
person or entity, including a "group" as contemplated by Section 13(d)(3) of
the 1934 Act, acquires or gains ownership or control (including, without
limitation, power to vote) of more than 50% of the outstanding shares of the
Company's voting stock (based upon voting power), or (v) as a result of or in
connection with a contested election of directors, the persons who were
directors of the Company before such election shall cease to constitute a
majority of the Board.





                                      A-1
<PAGE>   2
         (f)     "Change of Control Value" shall mean (i) the per share price
offered to stockholders of the Company in any such merger, consolidation,
reorganization, sale of assets or dissolution transaction, (ii) the price per
share offered to stockholders of the Company in any tender offer or exchange
offer whereby a Change of Control takes place, or (iii) if such Change of
Control occurs other than in (i) or (ii) above, the Fair Market Value per share
of the shares into which Awards are exercisable, as determined by the
Committee, whichever is applicable.  In the event that the consideration
offered to stockholders of the Company consists of anything other than cash,
the Committee shall determine the fair cash equivalent of the portion of the
consideration offered which is other than cash.

         (g)     "Code" means the Internal Revenue Code of 1986, as amended.
Reference in the Plan to any section of the Code shall be deemed to include any
amendments or successor provisions to any section and any regulations under
such section.

         (h)     "Committee" means the Compensation Committee of the Board
which shall be (i) constituted so as to permit the Plan to comply with Rule
16b-3 and (ii) constituted solely of "outside directors," within the meaning of
section 162(m) of the Code and applicable interpretive authority thereunder.

         (i)     "Company" means Sterling Chemicals Holdings, Inc. and any
successors thereto.

         (j)     "Director" means an individual elected to the Board by the
stockholders of the Company or by the Board under applicable corporate law who
is serving on the Board on the date the Plan is adopted by the Board or is
elected to the Board after such date.

         (k)     "Disabled" means a Holder who is on Long-Term Disability as
defined in the Pension Plan.

         (l)     An "employee" means any person (including an officer or a
Director) in an employment relationship with the Employer.

         (m)     "Employer" means the Company, an Affiliate or any Subsidiary.

         (n)     "Fair Market Value" means, with respect to a share of Stock as
of any specified date, (i) if the Stock is listed on a national stock exchange,
the mean of the high and low sales prices of the Stock reported on the stock
exchange composite tape on that date, or if no prices are reported on that
date, on the last preceding date on which such prices of Stock are so reported;
or (ii) in the event the Stock is not traded on a national stock exchange, the
fair market value of a share of Stock determined by the Committee in such
reasonable manner as it deems appropriate.

         (o)     "Forfeiture Restrictions" means with regard to shares of Stock
that are subject to a Restricted Stock Award, restrictions placed on a Holder's
disposition of such shares under certain circumstances or an obligation of a
Holder to forfeit and surrender such shares under certain circumstances.

         (p)     "Holder" means an employee who has been granted an Award.

         (q)     "Incentive Stock Option" means an incentive stock option
within the meaning of section 422(b) of the Code.

         (r)     "Initial Public Offering" or "IPO" means the consummation of
an underwritten public offering of Stock pursuant to a registration statement
of the Company filed under the Securities Act of 1933, as amended, after the
effective date of the Plan (other than any registration statement (a) relating
to warrants, options or shares of capital stock of the Company granted or to be
granted or sold primarily to employees, directors, or officers of the Company,
(b) filed in connection with a transaction described in Rule 145 under the
Securities Act of 1933, as amended, or any successor rule, (c) relating to
employee benefit plans or interests therein, or (d) primarily relating to
preferred stock or other securities issued in connection with any financing by
the Company which is principally debt or preferred stock financing) wherein the
aggregate net proceeds (after deducting all costs, discounts, commissions and
other expenses of the offering) to the Company are at least $100,000,000.





                                      A-2
<PAGE>   3
         (s)     "1934 Act" means the Securities Exchange Act of 1934, as
amended.

         (t)     "Nonqualified Stock Option" means an option granted under
Paragraph VII of the Plan to purchase Stock which does not constitute an
Incentive Stock Option.

         (u)     "Option" means an Award granted under Paragraph VII of the
Plan and includes both Incentive Stock Options to purchase Stock and
Nonqualified Stock Options to purchase Stock.

         (v)     "Optionee" means a Holder who has been granted an Option.

         (w)     "Option Agreement" means a written agreement between the
Company and a Holder with respect to an Option.

         (x)     "Pension Plan" means the Sterling Chemicals, Inc. Amended and
Restated Salaried Employees' Pension Plan (Effective as of May 1, 1996).

         (y)     "Performance Award" means an Award granted under Paragraph X
of the Plan.

         (z)     "Performance Award Agreement" means a written agreement
between the Company and a Holder with respect to a Performance Award.

         (aa)    "Phantom Stock Award" means an Award granted under Paragraph
XI of the Plan.

         (bb)    "Phantom Stock Award Agreement" means a written agreement
between the Company and a Holder with respect to a Phantom Stock Award.

         (cc)    "Plan" means the Sterling Chemicals Holdings, Inc. Omnibus
Stock Awards and Incentive Plan, as amended from time to time.

         (dd)    "Restricted Stock Agreement" means a written agreement between
the Company and a Holder with respect to a Restricted Stock Award.

         (ee)    "Restricted Stock Award" means an Award granted under
Paragraph IX of the Plan.

         (ff)    "Retirement" means a Holder's Early Retirement, Normal
Retirement or Late Retirement as set forth in the Pension Plan.

         (gg)    "Rule 16b-3" means SEC Rule 16b-3 promulgated under the 1934
Act, as such may be amended from time to time, and any successor rule,
regulation or statute fulfilling the same or a similar function.

         (hh)    "Spread" means, in the case of a Stock Appreciation Right, an
amount equal to the excess, if any, of the Fair Market Value of a share of
Stock on the date such right is exercised over the exercise price of such Stock
Appreciation Right; provided, however, the Committee may establish, in its sole
discretion, in any Stock Appreciation Rights Agreement, the maximum amount of
Spread attributable to a Stock Appreciation Right.

         (ii)    "Stock" means the common stock, $0.01 par value of the
Company.

         (jj)    "Stock Appreciation Right" means an Award granted under
Paragraph VIII of the Plan.

         (kk)    "Stock Appreciation Rights Agreement" means a written
agreement between the Company and a Holder with respect to an Award of Stock
Appreciation Rights.





                                      A-3
<PAGE>   4
         (ll)    "Subsidiary" means any corporation or entity of which more
than 50% of the outstanding securities or ownership interests having ordinary
voting power to elect a majority of the members of the Board of Directors, or
persons in similar capacity of such corporation or entity, is, directly or
indirectly owned by the Company.

                 III.  EFFECTIVE DATE AND DURATION OF THE PLAN

         The Plan shall be effective upon the date of its adoption by the
Board, provided that the Plan is approved by the stockholders of the Company
within twelve months thereafter.  No further Awards may be granted under the
Plan after the expiration of ten years from the date of its adoption by the
Board.  The Plan shall remain in effect until all Awards granted under the Plan
have been satisfied or expired.

                              IV.  ADMINISTRATION

         (a)     Committee.  The Plan shall be administered by the Committee.

         (b)     Powers.  Subject to the provisions of the Plan, the Committee
shall have sole authority, in its discretion, to determine which employees
shall receive an Award, the time or times when such Award shall be made,
whether an Incentive Stock Option, Nonqualified Option or Stock Appreciation
Right shall be granted, the number of shares of Stock which may be issued under
each Option, Stock Appreciation Right or Restricted Stock Award, and the value
of each Performance Award and Phantom Stock Award.  In making such
determinations the Committee may take into account the nature of the services
rendered by the respective employees, their present and potential contributions
to the Employer's success and such other factors as the Committee in its
discretion shall deem relevant.

         (c)     Additional Powers.  The Committee shall have such additional
powers as are delegated to it by the other provisions of the Plan.  Subject to
the express provisions of the Plan, the Committee is authorized to construe the
Plan and the respective agreements executed thereunder, to prescribe such rules
and regulations relating to the Plan as it may deem advisable to carry out the
Plan, and to determine the terms, restrictions and provisions of each Award,
including such terms, restrictions and provisions as shall be requisite in the
judgment of the Committee to cause designated Options to qualify as Incentive
Stock Options, and to make all other determinations necessary or advisable for
administering the Plan.  The Committee may correct any defect or supply any
omission or reconcile any inconsistency in any agreement relating to an Award
in the manner and to the extent it shall deem expedient to carry it into
effect.  The determinations of the Committee on the matters referred to in this
Article IV shall be conclusive.

         (d)     Expenses.  All expenses and liabilities incurred by the
Committee in the administration of this Plan shall be borne by the Company. The
Committee may employ attorneys, consultants, accountants or other persons to
assist the Committee in the carrying out of its duties hereunder.

                         V.  STOCK SUBJECT TO THE PLAN

         (a)     Stock Grant and Award Limits.  The Committee may from time to
time grant Awards to one or more employees determined by it to be eligible for
participation in the Plan in accordance with the provisions of Paragraph VI.
Subject to Paragraph XII, the aggregate number of shares of Stock that may be
issued under the Plan shall not exceed 1,000,000 shares.  The shares subject to
this Plan shall consist of authorized but unissued shares of Stock or
previously issued shares of Stock reacquired and held by the Company, and such
number of shares shall be and is hereby reserved for such purpose.  Shares of
Stock shall be deemed to have been issued under the Plan only to the extent
actually issued and delivered pursuant to an Award.  To the extent that an
Award lapses or the rights of its Holder terminate or the Award is to only be
paid in cash or is paid in cash, any shares of Stock subject to such Award
shall again be available for the grant of an Award. To the extent that an Award
lapses or the rights of its Holder terminate, any shares of Stock subject to
such Award shall again be available for the grant of an Award.  Separate stock
certificates shall be issued by the Company for those shares acquired pursuant
to the exercise of an Incentive Stock Option and for those shares acquired
pursuant to the exercise of a Nonqualified Stock Option.





                                      A-4
<PAGE>   5
         (b)     Stock Offered.  The stock to be offered pursuant to the grant
of an Award may be authorized but unissued Stock or Stock previously issued and
outstanding and reacquired by the Company.

                                VI.  ELIGIBILITY

         Awards may be granted only to persons who, at the time of grant, are
employees.  Awards may not be granted to any Director who is not an employee.
An Award may be granted on more than one occasion to the same person, and,
subject to the limitations set forth in the Plan, such Award may include an
Incentive Stock Option or a Nonqualified Stock Option, a Stock Appreciation
Right, a Restricted Stock Award, a Performance Award, a Phantom Stock Award or
any combination thereof.

                              VII.  STOCK OPTIONS

         (a)     Option Period.  The term of each Option shall be as specified
by the Committee at the date of grant.

         (b)     Limitations on Exercise of Option.  An Option shall be
exercisable in whole or in such installments and at such times as determined by
the Committee.

         (c)     Special Limitations on Incentive Stock Options.  To the extent
that the aggregate Fair Market Value (determined at the time the respective
Incentive Stock Option is granted) of Stock with respect to which Incentive
Stock Options are exercisable for the first time by an employee during any
calendar year under all incentive stock option plans of the Company and its
Affiliates exceeds $100,000, such Incentive Stock Options shall be treated as
Nonqualified Stock Options as determined by the Committee.  The Committee shall
determine, in accordance with applicable provisions of the Code, Treasury
Regulations and other administrative pronouncements, which of an Optionee's
Incentive Stock Options will not constitute Incentive Stock Options because of
such limitation and shall notify the Optionee of such determination as soon as
practicable after such determination.  No Incentive Stock Option shall be
granted to an employee if, at the time the Option is granted, such employee
owns stock possessing more than 10% of the total combined voting power of all
classes of stock of the Company or of its parent or subsidiary corporation,
within the meaning of section 422(b)(6) of the Code, unless (i) at the time
such Option is granted the option price is at least 110% of the Fair Market
Value of the Stock subject to the Option and (ii) such Option by its terms is
not exercisable after the expiration of five years from the date of grant.

         (d)     Option Agreement.  Each Option shall be evidenced by an Option
Agreement in such form and containing such provisions not inconsistent with the
provisions of the Plan as the Committee from time to time shall approve,
including, without limitation, provisions to qualify an Incentive Stock Option
under section 422 of the Code.  An Option Agreement may provide for the payment
of the option price, in whole or in part, in cash or by the delivery of a
number of shares of Stock (plus cash if necessary) having a Fair Market Value
equal to such option price.  Each Option shall specify the effect of
termination of employment on the exercisability of the Option; provided, that
upon the death of an Optionee, the Retirement of an Optionee, or upon the
Optionee becoming Disabled, all outstanding Options of such Optionee shall
immediately vest and become exercisable.  Moreover, an Option Agreement may
provide for a "cashless exercise" of the Option by establishing procedures
whereby the Holder, by a properly-executed written notice, directs (i) an
immediate market sale or margin loan respecting all or a part of the shares of
Stock to which he is entitled upon exercise pursuant to an extension of credit
by the Company to the Holder of the option price, (ii) the delivery of the
shares of Stock from the Company directly to a brokerage firm and (iii) the
delivery of the option price from the sale or margin loan proceeds from the
brokerage firm directly to the Company.  Such Option Agreement may also
include, without limitation, provisions relating to (i) vesting of Options,
subject to the provisions hereof accelerating such vesting upon the occurrence
of an IPO or a Change of Control,  (ii) tax matters (including provisions (y)
permitting the delivery of additional shares of Stock or the withholding of
shares of Stock from those acquired upon exercise to satisfy federal or state
income tax withholding requirements and (z) dealing with any other applicable
employee wage withholding requirements), and (iii) any other matters not
inconsistent with the terms and provisions of this Plan that the Committee
shall in its sole discretion determine.  The terms and conditions of the
respective Option Agreements need not be identical.





                                      A-5
<PAGE>   6
         (e)     Option Price and Payment.  The price at which a share of Stock
may be purchased upon exercise of an Option shall be determined by the
Committee, but (i) such purchase price shall not be less than the Fair Market
Value of Stock subject to an Incentive Stock Option on the date the Incentive
Stock Option is granted and (ii) such purchase price shall be subject to
adjustment as provided in Paragraph XII.  The Option or portion thereof may be
exercised by delivery of an irrevocable notice of exercise to the Company.  The
purchase price of the Option or portion thereof shall be paid in full in the
manner prescribed by the Committee.

         (f)     Stockholder Rights and Privileges.  The Holder shall be
entitled to all the privileges and rights of a stockholder only with respect to
such shares of Stock as have been purchased under the Option and for which
certificates of stock have been registered in the Holder's name.

         (g)     Options and Rights in Substitution for Stock Options Granted
by Other Corporations.  Options and Stock Appreciation Rights may be granted
under the Plan from time to time in substitution for stock options held by
individuals employed by corporations who become employees as a result of a
merger or consolidation of the employing corporation with the Company, an
Affiliate, or any Subsidiary, or the acquisition by the Company, an Affiliate
or a Subsidiary of the assets of the employing corporation, or the acquisition
by the Company, an Affiliate or a Subsidiary of stock of the employing
corporation with the result that such employing corporation becomes a
Subsidiary.

                        VIII.  STOCK APPRECIATION RIGHTS

         (a)     Stock Appreciation Rights.  A Stock Appreciation Right is the
right to receive an amount equal to the Spread with respect to a share of Stock
upon the exercise of such Stock Appreciation Right.  Stock Appreciation Rights
may be granted in connection with the grant of an Option, in which case the
Option Agreement will provide that exercise of Stock Appreciation Rights will
result in the surrender of the right to purchase the shares under the Option as
to which the Stock Appreciation Rights were exercised.  The Spread with respect
to a Stock Appreciation Right may be payable either in cash, shares of Stock
with a Fair Market Value equal to the Spread or in a combination of cash and
shares of Stock.  With respect to Stock Appreciation Rights that are subject to
Section 16 of the 1934 Act, however, the Committee shall, except as provided in
Paragraph XII(c), retain sole discretion (i) to determine the form in which
payment of the Stock Appreciation Right will be made (i.e., cash, securities or
any combination thereof) or (ii) to approve an election by a Holder to receive
cash in full or partial settlement of Stock Appreciation Rights.

         (b)     Stock Appreciation Rights Agreement. Stock Appreciation Rights
granted independently of Options shall be evidenced by a Stock Appreciation
Rights Agreement.  Each Stock Appreciation Rights Agreement shall specify the
effect of termination of employment on the exercisability of the Stock
Appreciation Rights; provided, that upon the death of a Holder of a Stock
Appreciation Right, the Retirement of such Holder, or upon such Holder becoming
Disabled, all outstanding Stock Appreciation Rights of such Holder shall
immediately vest and become exercisable.   Stock Appreciation Rights Agreements
may also include, without limitation, provisions relating to (i) vesting of
Awards, subject to the provisions hereof accelerating vesting upon the
occurrence of an IPO or a Change of Control, (ii) tax matters (including
provisions covering applicable wage withholding requirements), and (iii) any
other matters not inconsistent with the terms and provisions of this Plan, that
the Committee shall in its sole discretion determine.  The terms and conditions
of the respective Stock Appreciation Rights Agreements need not be identical.

         (c)     Exercise Price.  The exercise price of each Stock Appreciation
Right shall be determined by the Committee in its sole discretion and shall be
subject to adjustment as provided in Paragraph XII.

         (d)     Exercise Period.  The term of each Stock Appreciation Right
shall be as specified by the Committee at the date of grant.

         (e)     Limitations on Exercise of Stock Appreciation Right.  A Stock
Appreciation Right shall be exercisable in whole or in such installments and at
such times as determined by the Committee.





                                      A-6
<PAGE>   7
                          IX.  RESTRICTED STOCK AWARDS

         (a)     Restricted Stock Awards.  A Restricted Stock Award shall be
represented by a certificate of Stock registered in the name of the Holder of
such Restricted Stock Award.  The Holder shall have the right to receive
dividends with respect to Stock subject to a Restricted Stock Award, to vote
Stock subject thereto and to enjoy all other stockholder rights, except that
(i) the Holder shall not be entitled to delivery of the Stock certificate until
the Forfeiture Restrictions shall have expired, (ii) the Company shall retain
custody of the Stock until the Forfeiture Restrictions shall have expired,
(iii) the Holder may not sell, transfer, pledge, exchange, hypothecate or
otherwise dispose of the Stock until the Forfeiture Restrictions shall have
expired, and (iv) a breach of the terms and conditions established by the
Committee pursuant to the Restricted Stock Agreement shall cause a forfeiture
of the Restricted Stock Award.

         (b)     Forfeiture Restrictions to be Established by the Committee.
The Forfeiture Restrictions on shares of Stock that are the subject of a
Restricted Stock Award shall be determined by the Committee in its sole
discretion, and the Committee may provide that the Forfeiture Restrictions
shall lapse upon (i) the attainment of targets established by the Committee
that are based on (1) the price of a share of Stock, (2) the Company's earnings
per share, (3) the Company's revenue, (4) the revenue of a business unit of the
Company designated by the Committee, (5) the return on stockholders' equity
achieved by the Company, or (6) the Company's pre-tax cash flow from
operations, (ii) the Holder's continued employment with the Employer for a
specified period of time, or (iii) a combination of any two or more of the
factors listed in clauses (i) and (ii) of this sentence.  Each Restricted Stock
Award may have different Forfeiture Restrictions, in the discretion of the
Committee.  The Forfeiture Restrictions applicable to a particular Restricted
Stock Award shall not be changed except as permitted by Paragraph IX(b) or
Paragraph XII.

         (c)     Other Terms and Conditions.  At the time of a Restricted Stock
Award, the Committee may, in its sole discretion, prescribe additional terms,
conditions or restrictions relating to Restricted Stock Awards, including, but
not limited to, rules pertaining to the termination of employment of a Holder
prior to expiration of the Forfeiture Restrictions; provided, that upon the
death of a Holder of a Restricted Stock Award, the Retirement of such Holder,
or upon such Holder becoming Disabled, all Forfeiture Restrictions applicable
to all Restricted Stock Awards of such Holder shall lapse and expire.  Such
additional terms, conditions or restrictions shall be set forth in a Restricted
Stock Agreement made in conjunction with the Award.  Such Restricted Stock
Agreement may also include, without limitation, provisions relating to (i)
subject to the provisions hereof accelerating vesting upon the occurrence of an
IPO or a Change of Control, vesting of Awards, (ii) tax matters (including
provisions (y) covering any applicable employee wage withholding requirements
and (z) prohibiting an election  by the Holder under section 83(b) of the
Code), and (iii) any other matters not inconsistent with the terms and
provisions of this Plan that the Committee shall in its sole discretion
determine.  The terms and conditions of the respective Restricted Stock
Agreements need not be identical.

         (d)     Payment for Restricted Stock.  The Committee shall determine
the amount and form of any payment for Stock received pursuant to a Restricted
Stock Award, provided that in the absence of such a determination, a Holder
shall not be required to make any payment for Stock received pursuant to a
Restricted Stock Award, except to the extent otherwise required by law.

         (e)     Agreements.  At the time any Award is made under this
Paragraph IX, the Company and the Holder shall enter into a Restricted Stock
Agreement setting forth each of the matters as the Committee may determine to
be appropriate.  The terms and provisions of the respective Restricted Stock
Agreements need not be identical.

                             X.  PERFORMANCE AWARDS

         (a)     Performance Period.  The Committee shall establish, with
respect to and at the time of each Performance Award, a performance period over
which the performance of the Holder shall be measured.

         (b)     Performance Awards.  Each Performance Award shall have a
maximum value established by the Committee at the time of such Award.





                                      A-7
<PAGE>   8
         (c)     Performance Measures.  A Performance Award shall be awarded to
an employee contingent upon future performance of the employee, the Company, an
Affiliate, any Subsidiary, or any division or department thereof by or in which
he is employed during the performance period.  The Committee shall establish
the performance measures applicable to such performance prior to the beginning
of the performance period but subject to such later revisions as the Committee
shall deem appropriate to reflect significant, unforeseen events or changes.

         (d)     Awards Criteria.  In determining the value of Performance
Awards, the Committee shall take into account an employee's responsibility
level, performance, potential, other Awards and such other considerations as it
deems appropriate.

         (e)     Payment.  Following the end of the performance period, the
Holder of a Performance Award shall be entitled to receive payment of an
amount, not exceeding the maximum value of the Performance Award, based on the
achievement of the performance measures for such performance period, as
determined by the Committee.  Payment of a Performance Award may be made in
cash, Stock or a combination thereof, as determined by the Committee.  Payment
shall be made in a lump sum or in installments as prescribed by the Committee.
Any payment to be made in Stock shall be based on the Fair Market Value of the
Stock on the payment date.  If a payment of cash is to be made on a deferred
basis, the Committee shall establish whether interest shall be credited, the
rate thereof and any other terms and conditions applicable thereto.

         (f)     Termination of Employment.  A Performance Award shall
terminate if the Holder does not remain continuously in the employ of the
Employer at all times during the applicable performance period, except as may
be determined by the Committee or as may otherwise be provided in the Award at
the time granted.

         (g)     Agreements.  At the time any Award is made under this
Paragraph X, the Company and the Holder shall enter into a Performance Stock
Award Agreement setting forth each of the matters contemplated hereby, and, in
addition such matters are set forth in Paragraph IX(b) as the Committee may
determine to be appropriate.  The terms and provisions of the respective
agreements need not be identical.

                           XI.  PHANTOM STOCK AWARDS

         (a)     Phantom Stock Awards.  Phantom Stock Awards are rights to
receive shares of Stock (or cash in an amount equal to the Fair Market Value
thereof), or rights to receive an amount equal to any appreciation in the Fair
Market Value of Stock (or portion thereof) over a specified period of time,
which vest over a period of time (subject to the provisions hereof accelerating
vesting upon the occurrence of an IPO or a Change of Control) as established by
the Committee, without payment of any amounts by the Holder thereof (except to
the extent otherwise required by law) or satisfaction of any performance
criteria or objectives.  Each Phantom Stock Award shall have a maximum value
established by the Committee at the time of such Award.

         (b)     Award Period.  The Committee shall establish, with respect to
and at the time of each Phantom Stock Award, a period over which or the event
upon which the Award shall vest with respect to the Holder.

         (c)     Awards Criteria.  In determining the value of Phantom Stock
Awards, the Committee shall take into account an employee's responsibility
level, performance, potential, other Awards and such other considerations as it
deems appropriate.

         (d)     Payment.  Following the end of the vesting period for a
Phantom Stock Award, the Holder of a Phantom Stock Award shall be entitled to
receive payment of an amount, not exceeding the maximum value of the Phantom
Stock Award, based on the then vested value of the Award.  Payment of a Phantom
Stock Award may be made in cash, Stock or a combination thereof as determined
by the Committee.  Payment shall be made in a lump sum or in installments as
prescribed by the Committee in its sole discretion.  Any payment to be made in
Stock shall be based on the Fair Market Value of the Stock on the payment date.
Cash dividend equivalents may be paid during or after the vesting period with
respect to a Phantom Stock Award, as determined by the Committee.  If a payment
of cash is to be





                                      A-8
<PAGE>   9
made on a deferred basis, the Committee shall establish whether interest shall
be credited, the rate thereof and any other terms and conditions applicable
thereto.

         (e)     Termination of Employment.  Except as may be otherwise
determined by the Committee or as set forth in the Award at the time of grant,
a Phantom Stock Award shall terminate if the Holder does not remain
continuously in the employ of the Employer at all times during the applicable
vesting period; provided, however, that upon the death of a Holder of a Phantom
Stock Award, the Retirement of such Holder, or upon such Holder becoming
Disabled, all outstanding Phantom Stock Awards of such Holder shall immediately
vest and become distributable.

         (f)     Agreements.  At the time any Award is made under this
Paragraph XI, the Company and the Holder shall enter into a Phantom Stock Award
Agreement setting forth each of the matters contemplated hereby and, in
addition, such matters as are set forth in Paragraph IX(b) as the Committee may
determine to be appropriate.  The terms and provisions of the respective
agreements need not be identical.

                    XII.  RECAPITALIZATION OR REORGANIZATION

         (a)     The shares with respect to which Awards may be granted are
shares of Stock as presently constituted, but if, and whenever, prior to the
expiration of an Award theretofore granted, the Company shall effect a
subdivision or consolidation of such shares of Stock or other capital
readjustment, the number of shares of Stock with respect to which such Award
may thereafter be exercised or satisfied, as applicable, (i) in the event of an
increase in the number of outstanding shares shall be proportionately
increased, and the purchase price per share shall be proportionately reduced,
and (ii) in the event of a reduction in the number of outstanding shares shall
be proportionately reduced, and the purchase price per share shall be
proportionately increased.

         (b)     If the Company recapitalizes or otherwise changes its capital
structure, thereafter upon any exercise or satisfaction, as applicable, of an
Award theretofore granted the Holder shall be entitled to (or entitled to
purchase, if applicable) under such Award, in lieu of the number of shares of
Stock then covered by such Award, the number and class of shares of stock and
securities to which the Holder would have been entitled pursuant to the terms
of the recapitalization if, immediately prior to such recapitalization, the
Holder had been the holder of record of the number of shares of Stock then
covered by such Award.

         (c)     In the event of an IPO or a Change of Control, all outstanding
Awards shall immediately vest and become exercisable or satisfiable, as
applicable.  The Committee, in its discretion, may determine that upon the
occurrence of a Change of Control, each Award other than an Option outstanding
hereunder shall terminate within a specified reasonable number of days after
notice to the Holder, and such Holder shall receive, with respect to each share
of Stock subject to such Award, cash in an amount equal to the excess, if any,
of the Change of Control Value over any exercise price or purchase price paid,
if applicable.  Further, in the event of a Change of Control, the Committee, in
its discretion shall act to effect one or more of the following alternatives
with respect to outstanding Options, which may vary among individual Holders
and which may vary among Options held by any individual Holder:  (i) determine
a reasonable period of time  on or before a specified date (before or after
such Change of Control) after which specified date all unexercised Options and
all rights of Holders thereunder shall terminate, (2) require the mandatory
surrender to the Company by selected Holders of some or all of the outstanding
Options held by such Holders (irrespective of whether such Options are then
exercisable under the provisions of the Plan) as of a date, before or after
such Change of Control, specified by the Committee, in which event the
Committee shall thereupon cancel such Options and the Company shall pay to each
Holder an amount of cash per share equal to the excess, if any, of the Change
of Control Value of the shares subject to such Option over the exercise
price(s) under such Options for such shares, or (3) provide that thereafter
upon any exercise of an Option theretofore, granted the Holder shall be
entitled to purchase under such Option, in lieu of the number of shares of
Stock then covered by such Option, the number and class of shares of stock or
other securities or property (including, without limitation, cash) to which the
Holder would have been entitled pursuant to the terms of the agreement of
merger, consolidation or sale of assets and dissolution if, immediately prior
to such merger, consolidation or sale of assets and dissolution the Holder has
been the holder of record of the number of shares of Stock then covered by such
Option.  The provisions contained in this paragraph shall not terminate any





                                      A-9
<PAGE>   10
rights of the Holder to further payments pursuant to any other agreement with
the Company following a Change of Control.

         (d)     In the event of changes in the outstanding Stock by reason of
recapitalization, reorganizations, mergers, consolidations, combinations,
exchanges or other relevant changes in capitalization occurring after the date
of the grant of any Award and not otherwise provided for by this Paragraph XII,
any outstanding Awards and any agreements evidencing such Awards shall be
subject to adjustment by the Committee at its reasonable discretion as to the
number and price of shares of Stock or other consideration subject to such
Awards.  In the event of any such change in the outstanding Stock, the
aggregate number of shares available under the Plan may be appropriately
adjusted by the Committee, whose determination shall be reasonable and
conclusive.

         (e)     The existence of the Plan and the Awards granted hereunder
shall not affect in any way the right or power of the Board or the stockholders
of the Company to make or authorize any adjustment, recapitalization,
reorganization or other change in the Company's capital structure or its
business, any merger or consolidation of the Company, any issue of debt or
equity securities ahead of or affecting Stock or the rights thereof, the
dissolution or liquidation of the Company or any sale, lease, exchange or other
disposition of all or any part of its assets or business or any other corporate
act or proceeding.

         (f)     Any adjustment provided for in Subparagraphs (a), (b), (c) or
(d) above shall be subject to any required stockholder action.

         (g)     Except as hereinbefore expressly provided, the issuance by the
Company of shares of stock of any class or securities convertible into shares
of stock of any class, for cash, property, labor or services, upon direct sale,
upon the exercise of rights or warrants to subscribe therefor, or upon
conversion of shares of obligations of the Company convertible into such shares
or other securities, and in any case whether or not for fair value, shall not
affect, and no adjustment by reason thereof shall be made with respect to, the
number of shares of Stock subject to Awards theretofore granted or the purchase
price per share, if applicable.

                  XIII.  AMENDMENT AND TERMINATION OF THE PLAN

                 The Board, in its discretion, may at any time or times amend,
suspend or terminate the Plan; provided, however, such action shall be subject
to the approval of the stockholders of the Company where stockholder approval
(i) is required by applicable law or (ii) the Board determines (A) such
approval is necessary to comply with any requirements of any securities
exchange on which the stock is listed or (B) such approval is desired for any
other reason; provided, further, however, that no amendment, suspension or
termination of the Plan may, without the consent of the holder of an Award,
terminate such Award or adversely affect such person's rights in any material
respect.

                              XIV.  MISCELLANEOUS

         (a)     No Right to An Award.  Neither the adoption of the Plan by the
Company nor any action of the Board or the Committee shall be deemed to give an
employee any right to be granted an Award to purchase Stock, a right to a Stock
Appreciation Right, a Restricted Stock Award, a Performance Award or a Phantom
Stock Award or any of the rights hereunder except as may be evidenced by an
Award or by an Option Agreement, Stock Appreciation Rights Agreement,
Restricted Stock Agreement, Performance Award Agreement or Phantom Stock Award
Agreement on behalf of the Company, and then only to the extent and on the
terms and conditions expressly set forth therein.  The Plan shall be unfunded.
The Company shall not be required to establish any special or separate fund or
to make any other segregation of funds or assets to assure the payment of any
Award.

         (b)     Employees' Rights Unsecured.  The right of an employee to
receive Stock, cash or any other payment under this Plan shall be an unsecured
claim against the general assets of the Company.  The Company may, but shall
not be obligated to, acquire shares of Stock from time to time in anticipation
of its obligations under this Plan, but a Participant shall have no right in or
against any shares of Stock so acquired.  All Stock shall constitute the
general assets of the Company and may be disposed of by the Company at such
time and for such purposes as it deems appropriate.





                                      A-10
<PAGE>   11
         (c)     Agreement Controls.  No discretionary action by the Committee
as set forth herein shall amend or supersede the express terms of any
Agreement.

         (d)     No Employment Rights Conferred.  Nothing contained in the Plan
shall (i) confer upon any employee any right with respect to continuation of
employment with any Employer or (ii) interfere in any way with the right of any
Employer to terminate an employee's employment at any time.

         (e)     Other Laws; Withholding.  The Company shall not be obligated
to issue any Stock pursuant to any Award granted under the Plan at any time
when the shares covered by such Award have not been registered under the
Securities Act of 1933 and such other state and federal laws, rules or
regulations as the Company or the Committee deems applicable and, in the
opinion of legal counsel for the Company, there is no exemption from the
registration requirements of such laws, rules or regulations available for the
issuance and sale of such shares.  Unless the Awards and Stock covered by this
Plan have been registered under the Securities Act of 1933, or the Company has
determined that such registration is unnecessary, each Holder exercising an
Award under this Plan may be required by the Company to give representation in
writing that such Holder is acquiring such shares for his or her own account
for investment and not with a view to, or for sale in connection with, the
distribution of any part thereof.  No fractional shares of Stock shall be
delivered, nor shall any cash in lieu of fractional shares be paid.  The
Company shall have the right to deduct in connection with all Awards any taxes
required by law to be withheld and to require any payments required to enable
it to satisfy its withholding obligations.

         (f)     No Restriction on Corporate Action.  Nothing contained in the
Plan shall be construed to prevent the Company, an Affiliate or any Subsidiary
from taking any corporate action which is deemed by the Company, an Affiliate
or any Subsidiary to be appropriate or in its best interest, whether or not
such action would have an adverse effect on the Plan or any Award made under
the Plan.  No employee, beneficiary or other person shall have any claim
against the Company, an Affiliate or any Subsidiary as a result of any such
action.

         (g)     Restrictions on Transfer.  Except as provided below, an Award
shall not be transferable otherwise than by will or the laws of descent and
distribution and shall be exercisable during the Holder's lifetime only by such
Holder or the Holder's guardian or legal representative.  However, the
Committee may, in its discretion, provide in an option agreement (other than
with respect to an Incentive Stock Option) that the option right granted to the
individual may be transferred (in whole or in part and shall be subject to such
terms and conditions as the Committee may impose thereon, including, without
limitation, the approval by the Company of the form of transfer agreement) by
the individual to (i) the spouse, children or grandchildren of the individual
("Immediate Family Members"), (ii) a trust or trusts for the exclusive benefit
of the Immediate Family Members and, if applicable, the individual, (iii) a
partnership in which such Immediate Family Members and, if applicable, the
individual are the only partners, or (iv) any other person or entity otherwise
permitted by the Committee.  Following transfer, any such transferred option
rights shall continue to be subject to the same terms and conditions as were
applicable to the option rights immediately prior to transfer; provided,
however, that no transferred option rights shall be exercisable unless
arrangements satisfactory to the Company have been made to satisfy any tax
withholding obligations the Company may have with respect to the option rights.

         (h)     Beneficiary Designation.  Each Holder may name, from time to
time, any beneficiary or beneficiaries (who may be named contingently or
successively) to whom any benefit under the Plan is to be paid in case of his
or her death before he or she receives any or all of such benefit.  Each
designation will revoke all prior designations by the same Holder, shall be in
a form prescribed by the Committee, and will be effective only when filed by
the Holder in writing with the Committee during his lifetime.  In the absence
of any such designation, benefits remaining unpaid at the Holder's death shall
be paid to his estate.

         (i)     Rule 16b-3.  It is intended that the Plan and any grant of an
Award made to a person subject to Section 16 of the 1934 Act meet all of the
requirements of Rule 16b-3.  If any provision of the Plan or any such Award
would disqualify the Plan or such Award under, or would otherwise not comply
with, Rule 16b-3, such provision or Award shall be construed or deemed amended
to conform to Rule 16b-3.





                                      A-11
<PAGE>   12
         (j)     Section 162(m).  If the Plan is subject to Section 162(m) of
the Code, it is intended that the Plan comply fully with and meet all the
requirements of Section 162(m) of the Code so that Options and Stock
Appreciation Rights granted hereunder and, if determined by the Committee,
Restricted Stock Awards, shall constitute "performance- based" compensation
within the meaning of such section.  If any provision of the Plan would
disqualify the Plan or would not otherwise permit the Plan to comply with
Section 162(m) as so intended, such provision shall be construed or deemed
amended to conform to the requirements or provisions of Section 162(m);
provided that no such construction or amendment shall have an adverse effect on
the economic value to a Holder of any Award previously granted hereunder.

         (k)     Indemnification. Each person who is or shall have been a
member of the Committee or of the Board and any employee delegated authority
hereunder shall be indemnified and held harmless by the Company against and
from any loss, cost, liability, or expense that may be imposed upon or
reasonably incurred by him in connection with or resulting from any claim,
action, suit, or proceeding to which he may be a party or in which he may be
involved by reason of any action taken or failure to act under the Plan and
against and from any and all amounts paid by him in settlement thereof, with
the Company's approval, or paid by him in satisfaction of any judgment in any
such action, suit, or proceeding against him, provided he shall give the
Company prompt written notice of any such action, suit or proceeding, and an
opportunity, at its own expense, to handle, defend and/or settle the same
before he undertakes to handle, defend and/or settle it on his own behalf. The
foregoing right of indemnification shall not be exclusive of any other rights
or indemnification to which such persons may be entitled under the Company's
Articles of Incorporation or Bylaws, as a matter of law, or otherwise, or any
power that the Company may have to indemnify them or hold them harmless.

         (l)     Governing Law.  This Plan shall be construed in accordance
with the laws of the State of Delaware and applicable federal law.

         IN WITNESS WHEREOF, Sterling Chemicals Holdings, Inc. has caused this
document to be duly executed in its name and behalf by its proper officer
thereunto duly authorized, effective for all purposes as of the date of the
adoption of the Plan by the Board, being April 23, 1997.


                                        STERLING CHEMICALS HOLDINGS, INC.



                                        By: /s/ FRANK P. DIASSI
                                           -----------------------------------
                                              Frank P. Diassi
                                              Chairman of the Board of Directors





                                      A-12

<PAGE>   1
                                                                  EXECUTION COPY


                                                                    EXHIBIT 10.2

                                                         *** OMITTED INFORMATION
                                                      DENOTED BY ASTERISKS (***)
                                                       HAS BEEN SEPARATELY FILED
                                                         WITH THE COMMISSION AND
                                                    IS SUBJECT TO A CONFIDENTIAL
                                                            TREATMENT REQUEST***



                   AMENDED AND RESTATED PRODUCTION AGREEMENT

                                    between

                               BP CHEMICALS INC.

                                      and

                            STERLING CHEMICALS, INC.





                                      -1-
<PAGE>   2
                              PRODUCTION AGREEMENT

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
     ARTICLE                                                                                                          PAGE
     -------                                                                                                          ----
<S>                                                                                                                    <C>
1 - Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 - Term  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 - Technology  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 - Rights and Obligations Respecting Facility Production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10

5 - Delivery, Shipment and Storage Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12

6 - Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14

7 - Purchase Price and Payment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14

8 - Deliveries and Shipments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17

9 - Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

10 - Measurement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21

***.

12 - Co-Products  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23

13 - Capital Expenditures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25

14 - Personnel  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29

15 - BP Security Interests; Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29

16 - Access to Information and Facility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30

17 - Representations and Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32

18 - Force Majeure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36

19 - Indemnification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
</TABLE>





                                      -i-
<PAGE>   3
<TABLE>
<S>                                                                                                                    <C>
20 - Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43

21 - Dispute Resolution and Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

22 - Confidentiality and Intellectual Property  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46

23 - Defaults; Failures; Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47

24 - Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49

25 - Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
</TABLE>

EXHIBITS

Exhibit A - Definitions

Exhibit B - Propylene Specifications

Exhibit C -Ammonia Specifications

Exhibit D - Acrylonitrile Specifications

SCHEDULES

Schedule 3.5(e)(i) - Sterling Actual Costs

Schedule 15.2 - Insurance

Schedule A-1 - Facility

Schedule A-2 - Example of Fixed Costs

Schedule A-3 - Example of Variable Costs

Schedule A-4 - BP Net Unrecouped Investment Amount





                                      -ii-
<PAGE>   4
                   AMENDED AND RESTATED PRODUCTION AGREEMENT

         THIS AMENDED AND RESTATED PRODUCTION AGREEMENT executed as of the 31st
day of March 1998 is by and between BP Chemicals Inc., an Ohio corporation
("BP") and Sterling Chemicals, Inc., a Delaware corporation ("Sterling").

         WHEREAS, Sterling owns and operates the Plant which contains the
Facility for the production of Product and Co-Products; and

         WHEREAS, BP and Sterling are parties to the Production Agreement dated
as of April 15, 1988 (the "Original Agreement") pursuant to which BP provided
funds for the Project and Sterling granted BP the right to purchase a specified
portion of the Product produced by the Facility for a period of ten years with
BP options to extend such right for up to an additional ten years; and

         WHEREAS, in lieu of an extension of the Original Agreement, the
parties hereto wish to amend and restate the Original Agreement to reflect (i)
the completion of the Project, (ii) the Right, and (iii) *** and otherwise to
provide for the terms and conditions under which Sterling shall produce and BP
shall purchase Product hereunder;

         NOW, THEREFORE, for and in consideration of the premises and of the
mutual representations, warranties, covenants and agreements herein contained
and the mutual benefits to be derived therefrom, the parties hereto agree as
follows:

                            Article 1 - Definitions

1.1      Unless otherwise stated in this Agreement, capitalized terms used
         herein shall have the meanings ascribed to them in Exhibit A.
<PAGE>   5
1.2      In this Agreement, unless a clear contrary intention appears:

         (a)     the words "hereof," "herein" and "hereunder" and words of
                 similar import refer to this Agreement as a whole and not to
                 any particular provision of this Agreement;

         (b)     reference to any gender includes each other gender and the
                 neuter;

         (c)     all terms defined in the singular shall have the same meanings
                 in the plural and vice versa;

         (d)     reference to any Person includes such Person's heirs,
                 executors, personal representatives, administrators,
                 successors and assigns; provided, however, that nothing
                 contained in this clause (d) is intended to authorize any
                 assignment not otherwise permitted by this Agreement;

         (e)     reference to a Person in a particular capacity or capacities
                 excludes such Person in any other capacity;

         (f)     reference to any contract or agreement means such contract or
                 agreement as amended, supplemented or modified from time to
                 time in accordance with the terms thereof;

         (g)     all references to Articles and Sections shall be deemed to be
                 references to the Articles and Sections of this Agreement;

         (h)     all references to Exhibits and Schedules shall be deemed to be
                 references to the Exhibits and Schedules attached hereto which
                 are made a part hereof and incorporated herein by reference;

         (i)     the word "including" (and with correlative meaning "include")
                 means including, without limiting the generality of any
                 description preceding such term;





                                      -2-
<PAGE>   6
         (j)     with respect to the determination of any period of time, the
                 word "from" means "from and including" and the words "to" and
                 "until" each means "to but excluding";

         (k)     the captions and headings contained in this Agreement shall
                 not be considered or given any effect in construing the
                 provisions hereof if any question of intent should arise;

         (l)     where any provision of this Agreement refers to action to be
                 taken by any Person, or which such Person is prohibited from
                 taking, such provision shall be applicable whether such action
                 is taken directly or indirectly by such Person; and

         (m)     no provision of this Agreement shall be interpreted or
                 construed against any Person solely because that Person or its
                 legal representative drafted such provision.

                                Article 2 - Term

2.1      Unless sooner terminated as provided herein, the term of this
         Agreement shall be for an initial term commencing on the Effective
         Date and ending on December 31, 2009 (the "Initial Term") and from
         year to year thereafter unless either party gives two years' prior
         written notice of its election to terminate this Agreement at the
         expiration of the Initial Term or any Additional Term pursuant to this
         Article 2.  Each year that this Agreement remains in effect after the
         expiration of the Initial Term shall be considered an "Additional
         Term".  Notwithstanding anything to the contrary contained in this
         Agreement, in the event that (i) ANEXCO, LLC, a Delaware limited
         liability company in which Sterling and BP are members, is dissolved
         and liquidated for any reason, or (ii) any of the Joint Venture
         Agreement dated as of March 31, 1998 or the ***, is terminated for any
         reason, then each of Sterling and BP shall have the right, in its sole
         discretion, to terminate this Agreement by





                                      -3-
<PAGE>   7
         providing written notice of its election to terminate this Agreement
         within 30 days after the date ANEXCO LLC is dissolved or liquidated or
         such other agreement is effectively terminated, as the case may be
         (the "Cross Termination Right").

2.2      Either party shall have the right to terminate this Agreement without
         cause for reasons other than as set forth in Section 2.3 effective at
         any time by giving the other party at least 24 Months prior written
         notice of its intent to terminate as of a date at least 24 Months
         after the delivery of such notice.  If BP terminates this Agreement
         pursuant to this Section 2.2 or the Cross Termination Right during the
         Initial Term, ***.  If Sterling terminates this Agreement pursuant to
         this Section 2.2 or the Cross Termination Right during the Initial
         Term, in either case, (i) prior to November 26, 2004, *** of the
         License Agreement or (ii) on or after November 26, 2004 but prior to
         November 26, 2009, *** of the License Agreement, and, in any event, BP
         will receive no further payments hereunder.

2.3      If this Agreement is terminated during the Initial Term due to a
         final, non-appealable order of a court or governmental agency of
         competent jurisdiction, ***, if any, produced from the Facility each
         calendar quarter after the date of termination in excess of one-fourth
         of  *** then in effect which is sold or otherwise provided to a third
         party during such calendar quarter.  Such payments shall be made for
         each calendar quarter during the period from the date of termination
         until the earlier to occur of the following:  (i) BP has received the
         BP Net Unrecouped Investment Amount or (ii) December 31, 2004 (if
         termination occurs before November 26, 1999), or December 31, 2009 (if
         termination occurs thereafter).  Nothing herein shall require Sterling
         to pay BP, in the aggregate, a sum greater than the BP Net Unrecouped
         Investment Amount or require Sterling to produce any amount of
         Product.





                                      -4-
<PAGE>   8
                             Article 3 - Technology

3.1      ***

3.2      ***

3.3      Sterling shall have no obligation to pay BP for use of the New
         Technology in the Facility except as otherwise provided in this
         Agreement, the License Agreement ***.

3.4      ***

3.5      (a)     Representatives of each of BP and Sterling shall meet at least
                 twice during each Contract Year.  At each such meeting, (i) BP
                 will make preliminary disclosures, on a non-confidential
                 basis, with respect to any technology, know-how, operating
                 practices and procedures and similar matters of which it is
                 aware which could improve the operation of the Facility,
                 reduce the costs of manufacturing acrylonitrile at the
                 Facility or which are related to safety, manufacturing,
                 maintenance, technical issues or review of projects and (ii)
                 Sterling will make preliminary disclosures, on a
                 non-confidential basis, with respect to any technology,
                 know-how, operating practices and procedures and similar
                 matters of which it is aware which could improve the operation
                 of the acrylonitrile facilities of BP located in Lima, Ohio
                 and Green Lake, Texas (collectively, the "BP Facilities"),
                 reduce the costs of manufacturing acrylonitrile at the BP
                 Facilities or which are related to safety, manufacturing,
                 maintenance, technical issues or review of projects.

         (b)     If the recipient of any such preliminary disclosure was
                 previously aware of the matter disclosed, either (i) each of
                 BP and Sterling shall make full disclosure to the other of





                                      -5-
<PAGE>   9
                 the relevant matter, in which event each of BP and Sterling
                 will be entitled to implement all or any portion of the matter
                 disclosed by the other without any payment made to the
                 disclosing party, or (ii) if either party so elects prior to
                 any further disclosure by the other party, BP and Sterling
                 shall not make any further disclosure with respect to the
                 relevant matter.

         (c)     If the recipient of any preliminary disclosure was not
                 previously aware of the matter disclosed, the recipient shall
                 be entitled to elect at any time and from time to time, by
                 providing written notice of such election to the disclosing
                 party, to receive full disclosure of the relevant matter, in
                 which event the party making the preliminary disclosure will,
                 as soon as practicable after such election, make full
                 disclosure of the relevant matter to the recipient.

         (d)     In the event that the recipient of a disclosed matter
                 implements such matter after full disclosure by the disclosing
                 party, the recipient shall pay the disclosing party ***.  If
                 the implementation of the disclosed matter is related to a
                 Capital Project previously contemplated by the recipient, the
                 value of the disclosed matter to the recipient will be based
                 upon the difference between the estimated cost of the Capital
                 Project contained in the most recent Appropriation Request (in
                 the case of Sterling) or Financial Memorandum (in the case of
                 BP) prepared prior to the disclosure of such matter and, in
                 the case of a matter resulting in recurring savings, the
                 actual cost of the Capital Project (with appropriate
                 adjustments to such estimated costs due to changes in scope of
                 the Capital Project which are unrelated to the disclosed
                 matter) or, in the case of a matter resulting in a one-time
                 savings, the estimated cost of the Capital





                                      -6-
<PAGE>   10
                 Project if the disclosed matter is implemented.  If the
                 implementation of the disclosed matter is not related to a
                 Capital Project, the value of the disclosed matter to the
                 recipient will be based upon, in the case of a matter
                 resulting in recurring savings, the savings realized through
                 the improvement in operating or maintenance procedures or the
                 reduction in costs from the implementation of the disclosed
                 matter or, in the case of a matter resulting in a one-time
                 savings, the savings estimated to be realized through the
                 improvement in operating or maintenance procedures or the
                 reduction in costs from the implementation of the disclosed
                 matter.  In the absence of any agreement by the parties as to
                 the value of the disclosed matter to the recipient, such value
                 shall be determined in accordance with Article 21.  The
                 recipient shall calculate the documented savings associated
                 with the implementation of any matter resulting in recurring
                 savings, as soon as practicable after the expiration of
                 one-year (and, if applicable, two years) following the
                 implementation of such matter.  Any payment by the recipient
                 or the disclosing party associated with the full disclosure of
                 any matter resulting in recurring savings shall be due and
                 payable upon each such calculation or notice of such
                 calculation, as the case may be.

         (e)     For purposes of determining the value of any matter disclosed
                 pursuant to this Section 3.5, each of BP and Sterling
                 acknowledge and agree that, as of the date of this Agreement,
                 the actual costs for the manufacture of acrylonitrile at the
                 Facility is as set forth in Schedule 3.5(e)(i).





                                      -7-
<PAGE>   11
         (f)     Any matter which is fully disclosed by a party pursuant to
                 this Section 3.5 shall be treated by the recipient as
                 confidential information of the disclosing party and be
                 subject to the provisions of Article 22 hereof.

         (g)     Notwithstanding anything to the contrary contained in this
                 Agreement, (i) this Section 3.5 shall not apply to any matter
                 disclosed or required to be disclosed pursuant to, and shall
                 not affect the rights of Sterling to receive technical support
                 under, the License Agreement, including the disclosure by BP
                 of any matter related to optimization changes in the reactor
                 areas of the Facility during the change-out of any catalyst,
                 and (ii) no payment by Sterling or BP pursuant to this Section
                 3.5 shall be deemed to be a Fixed Cost or Variable Cost for
                 purposes of this Agreement.

       Article 4 - Rights and Obligations Respecting Facility Production

4.1      On the terms and subject to the conditions of this Agreement, Sterling
         hereby grants to BP the Rights, and BP hereby agrees to receive and
         purchase and pay for, and Sterling agrees to sell and deliver to BP,
         Product in the manner provided herein subject at all times to the
         limitations imposed herein.

4.2      BP and Sterling agree that Product delivered to the applicable Point
         of Delivery hereunder shall be made available to BP under as uniform
         conditions and rates as possible.  Accordingly, BP shall take
         deliveries of, and Sterling shall deliver, Product in a manner
         commensurate with good operating practices and in accordance with
         proper maintenance, operating and distribution procedures and at as
         uniform rates of delivery as possible throughout each Quarter during
         the term of this Agreement.





                                      -8-
<PAGE>   12
4.3      BP and Sterling each agree to give the other reasonable notice of such
         party's desire at any time to materially increase or decrease the
         quantity of Product deliverable at any particular time hereunder.  If
         either party fails to meet the requirements of the Delivery, Shipment
         and Storage Instructions, such party shall notify the other party of
         the reasons for such failure and the estimated time such failure may
         continue.

4.4      BP agrees, subject to the terms, provisions and limitations hereof, to
         purchase hereunder each Quarter a quantity of Product equal to or in
         excess of the Minimum Quarterly Contract Quantity, provided that BP at
         its option may purchase and take in any Quarter a quantity of Product
         less than the Minimum Quarterly Contract Quantity, if BP pays to
         Sterling pursuant to the terms of Section 7.1:

         (a)     the Variable Cost Component then in effect multiplied by the
                 pounds of Product actually taken by BP during the Quarter;
                 plus

         (b)     the Fixed Cost Component in effect for each Month during the
                 Quarter.

         In the event BP makes payments to Sterling pursuant to this Section
         4.4, the failure of BP to purchase the Minimum Quarterly Contract
         Quantity in any Quarter shall not be deemed to be a breach of this
         Agreement.

4.5      Subject to the terms of this Agreement, Sterling agrees to sell and
         deliver to BP the Maximum Annual Contract Quantity of Product (or such
         lesser amount as BP shall request) each Contract Year.  Sterling shall
         not be obligated to sell or deliver to BP hereunder (i) during any
         Month, a quantity of Product in excess of the Maximum Monthly Contract
         Quantity, (ii) during any Quarter, a quantity of Product in excess of
         the Maximum Quarterly Contract Quantity, or (iii) during any Contract
         Year, a quantity of Product in excess of the





                                      -9-
<PAGE>   13
         Maximum Annual Contract Quantity.  Subject to the foregoing, Sterling
         agrees to use commercially reasonable efforts, subject to Sterling's
         existing or ongoing obligations to third parties, to meet any request
         by BP for Product (a) in any Month, in amounts in excess of the
         Maximum Monthly Contract Quantity, and (b) in any Quarter, in amounts
         in excess of the Maximum Quarterly Contract Quantity.

4.6      ***

            Article 5 - Delivery, Shipment and Storage Instructions

5.1      On or before the fifteenth Day of each Month during each Contract
         Year, BP shall deliver written notice to Sterling setting forth (a)
         BP's requested dates and volumes of deliveries and shipping and its
         storage requirements of Product for the coming Month (the "Delivery,
         Shipment and Storage Instructions") and (b) BP's estimated delivery,
         shipment and storage instructions of Product for the Month after the
         coming Month (the "Estimated Delivery, Shipment and Storage
         Instructions") which shall include estimated dates and volumes of
         deliveries, shipments and storage requirements of Product for such
         Month.  For example, on January 15, BP would deliver Delivery,
         Shipment and Storage Instructions for the Month of February, and
         Estimated Delivery, Shipment and Storage Instructions for the Month of
         March.  The estimated and requested volumes shall comply with Article
         4 hereof.  Sterling shall be entitled to rely on the Estimated
         Delivery, Shipment and Storage Instructions and the same shall be
         deemed to be the Delivery, Shipment and Storage Instructions unless
         actual Delivery, Shipment and Storage Instructions are received by
         Sterling.  Notwithstanding anything to the contrary in this Agreement,
         delivery of Product shall be made by Sterling only by barge or ocean
         going vessels.





                                      -10-
<PAGE>   14
5.2      Sterling will use reasonable efforts to comply with the Delivery,
         Shipment and Storage Instructions and shall give BP the same rights of
         priority and scheduling with respect thereto that it uses for
         deliveries, shipments and storage of its own Product and those of
         Sterling's other customers.  If Sterling fails to comply with the
         Delivery, Shipment and Storage Instructions as a result of Force
         Majeure or the actions or omissions of BP, Sterling shall have no
         liability for such failure.  Nothing contained in this Agreement is
         intended to authorize or require, or shall be deemed or construed as
         authorizing or requiring, Sterling to violate any Laws.

5.3      In addition to the Estimated Delivery, Shipping and Storage
         Instructions and the Delivery, Shipping and Storage Instructions, BP
         may deliver to Sterling from time to time additional shipping
         instructions for Product. All such instructions with respect to any
         particular shipment shall be given as early as is practicable prior to
         the requested shipment date.  Sterling shall use reasonable efforts to
         deliver Product at the times specified in such instructions. If such
         instructions cause Sterling to incur unusual expenses in order to
         deliver Product for such shipment, and if Sterling has obtained BP's
         approval of such expenses before they are incurred, BP shall reimburse
         Sterling upon receipt of invoice therefor.

5.4      Sterling and BP shall cooperate in utilizing their respective storage
         and transportation facilities to maximize cost savings and
         efficiencies in the transportation and storage of Product for both
         parties. With respect to shipments or exchanges made pursuant to this
         provision, the provisions of Articles 5, 8, 9 and 10 relating to
         delivery, shipment, testing and measurement shall generally apply.





                                      -11-
<PAGE>   15
5.5      To the extent required hereunder, Sterling shall comply with all Laws
         and other requirements of governmental authorities having jurisdiction
         now in force or which may hereafter be in force pertaining to the
         operation of the Facility and the production of acrylonitrile.

                           Article 6 - Specifications

The Specifications shall not be changed unless agreed to in advance in writing
by BP and Sterling. Sterling agrees to use all commercially reasonable efforts
to comply with state of the U.S. chemical industry statistical process control
requirements.

                     Article 7 - Purchase Price and Payment

7.1      The Purchase Price for all Product delivered to BP hereunder shall be
         equal to the sum of the following: ***.  BP shall pay each such
         invoice on or before the 30th Day after date of shipment or the 25th
         Day after receipt of invoice, whichever is later.

7.2      As soon as is practicable after the end of each Quarter, but in any
         event prior to the 15th day of first Month following the end of such
         Quarter, Sterling shall submit to BP a statement showing: ***

7.3      ***

7.4      Sterling will at all times use commercially reasonable efforts to
         minimize its  costs of producing Product.

7.5      BP shall provide Sterling at no charge the Raw Materials needed to
         produce the Product purchased by BP under this Agreement, provided
         that BP may terminate its obligation to provide Raw Materials on one
         year's prior written notice to Sterling and, provided further, that,
         if BP so terminates its obligation to provide Raw Materials, it may
         not again provide Raw Materials needed to produce the Product
         purchased by BP hereunder unless it gives





                                      -12-
<PAGE>   16
         Sterling at least one year's prior written notice and then only if
         such provision does not materially interfere with Sterling's
         contractual relationships existing at the time of such notice. BP's
         ammonia exchange balance shall never exceed plus or minus five million
         pounds.  For purposes of determining BP's propylene supply obligations
         hereunder, it is agreed that initially the Baseline Raw Materials
         Usage for propylene shall apply, adjusted each Quarter to reflect
         actual propylene usage. Sterling will maintain a running account of
         the Raw Materials supplied by BP and used to produce BP purchased
         Product, which amount shall be reflected in the statements delivered
         pursuant to this Article 7 and reconciled every Quarter along with the
         reconciliation under Section 7.2.  It is agreed that ammonia provided
         by BP will be delivered by barge and propylene provided by BP will be
         delivered by pipeline. Sterling will make available to BP on a volume
         pro rata basis any propylene pipeline transportation rights it has
         with third parties for the transportation of Raw Materials to the
         Facility. To the extent that BP's use of Sterling's pipeline
         transportation rights results in charges payable by Sterling to a
         third party for BP's transportation of Raw Materials on any given
         pipeline, BP shall reimburse Sterling for all of such charges upon
         receipt of an invoice therefor.

7.6      If BP has reason to dispute the accuracy of any invoice submitted to
         it by Sterling, BP will pay that part of the invoice which is
         undisputed in accordance with the provisions of this Article 7 and,
         after such dispute has been resolved, BP will pay any balance due to
         Sterling upon receipt by BP of a replacement or additional invoice
         submitted to it by Sterling.





                                      -13-
<PAGE>   17
7.7      Sterling shall maintain records and production data in accordance with
         its usual and customary practices and standards in respect of all
         matters referred to in this Agreement and in such detail as is
         sufficient to make the calculations required hereby.  Sterling shall
         provide access to such records and data pursuant to the provisions of
         Article 16 hereof.

                      Article 8 - Deliveries and Shipments

8.1      The point of delivery of any Product ("Point of Delivery") shall be
         the point of transfer of custody of such Product from Sterling to BP,
         and shall mean the first intake flange on the ship, barge or other
         inland water or marine vessel into which the Product is loaded for
         shipment. Title and risk of loss shall pass to BP at such flange
         (irrespective of whether Sterling owns or has provided the barge or
         ship into which the Product is loaded or delivered). As between
         Sterling and BP, Sterling shall be in control and possession of the
         Product sold and purchased hereunder and responsible for any damage or
         injury caused thereby until risk of loss with respect thereto has
         passed to BP. In addition to its other obligations hereunder, BP shall
         be in control and possession of the Product sold and purchased
         hereunder and responsible for any damage or injury caused thereby
         after risk of loss with respect thereto has passed to BP. The Point of
         Delivery of Raw Materials, if any, delivered by BP pursuant to Section
         7.5 hereof shall be the point of transfer of custody of such Raw
         Materials to Sterling and shall be (i) the last exit flange on the
         ship, barge or other inland water or marine vessel from which the Raw
         Materials are unloaded or (ii) the first inlet flange at the Plant
         used by the pipeline to effect delivery of Raw Materials to Sterling
         by the common carrier, in the case of delivery by pipeline. Title and
         risk of loss shall pass to Sterling at such flange or outlet, as the
         case may be, and BP shall be in control and





                                      -14-
<PAGE>   18
         possession of Raw Materials delivered pursuant to Section 7.5 hereof
         and responsible for any damage or injury caused thereby until risk of
         loss with respect thereto has passed to Sterling.

                              Article 9 - Testing

9.1      Product shall be tested prior to delivery to BP under the testing
         procedures and schedules being utilized by Sterling at the Facility.
         Such procedures and schedules may be changed from time to time by the
         agreement of BP and Sterling. Sterling shall retain representative
         samples for sufficient time to allow delivery to and acceptance by
         BP's customers of such Product but in no event less than six months.
         Sterling shall provide BP access to such samples and all records
         maintained by Sterling with respect thereto pursuant to the provisions
         of Article 16 hereof.

9.2      Confirmatory tests of the quality of (i) Product shipments and (ii)
         Raw Materials provided by BP, if any, shall be performed at the time
         of delivery according to the procedures and schedules being used from
         time to time by Sterling and where requested, in the presence of an
         independent surveyor, at BP's expense, utilizing representative
         samples taken, (a) in the case of Product, from the intake flange of
         the ship, barge or other inland water or marine vessel and from the
         tanks thereof where appropriate, into which the Product is loaded, and
         (b) in the case of Raw Materials provided by BP, from the outlet
         flange of the ship, barge or other inland water or marine vessel and
         from the tanks thereof where appropriate, from which such Product is
         unloaded or other appropriate facility, in the case of pipeline
         delivery.  The testing procedures and schedules described herein shall
         be subject to change from time to time by agreement of BP and
         Sterling.





                                      -15-
<PAGE>   19
9.3      All product of the Facility (other than Co-Products) when tested
         according to the agreed procedures and schedules shall be conclusively
         presumed to constitute Product unless analysis of the sample retained
         pursuant to the provisions of Sections 9.1, 9.2 or 9.4 hereof shows
         the product not to have been Product.

9.4      BP shall have the right, at BP's expense, to have Product tested by
         independent third parties prior to shipment as Product hereunder, so
         long as any such testing does not materially interfere with Facility
         operations, and Sterling shall cooperate in any such test and shall
         have the right to be represented and to participate in any such test
         and to inspect any equipment used in determining the nature or quality
         of Product. After such independent test, unless BP or its independent
         surveyor notifies Sterling prior to shipment of any such product that
         such product is not Product for purposes hereof, all such product
         shall be conclusively presumed to meet the Specifications and
         constitute Product. If such a notice is delivered to Sterling with
         respect to any such product which has not been shipped at the time
         such notice is given, such product shall not constitute Product
         hereunder, and BP shall have no obligation with respect to any such
         product; provided, however, that should Sterling object in writing to
         such notice with five Business Days after delivery of such objection,
         the parties will meet to resolve the question of whether such product
         is Product hereunder. If the parties fail to resolve the matter within
         20 Business Days after the delivery of the original objection by
         Sterling to BP, either party may refer the matter for dispute
         resolution pursuant to Article 21 hereof.





                                      -16-
<PAGE>   20
9.5      BP's sole remedy with respect to all product which is determined not
         to have constituted Product hereunder at the Point of Delivery shall
         be to require Sterling to, at Sterling's option, either (i) reprocess
         such product in the Facility at Sterling's sole cost and expense, (ii)
         exchange Product for such product or (iii) refund to BP the Purchase
         Price therefor, if previously paid.

9.6      BP agrees to be financially responsible for all product which is
         determined to have constituted Product sold to it hereunder at the
         Point of Delivery thereof, and the indemnity in Article 19 shall cover
         Damages arising from such Product.

9.7      Sterling shall have the right to refuse to accept delivery of raw
         materials which do not constitute Raw Materials hereunder, in addition
         to any other remedies it may have.

                            Article 10 - Measurement

10.1     The unit of measurement of Product, Co-Products and Raw Materials (the
         "Unit of Measurement") shall be one pound (avoirdupois).  All
         quantities given herein, unless otherwise expressly stated, are in
         terms of such Unit of Measurement.

10.2     Sterling shall maintain and operate the Measuring Equipment in
         accordance with customary practice in the industry and all applicable
         Laws.  BP may, at its option and expense, install measuring equipment
         for checking the Measuring Equipment so long as such installation does
         not materially interfere with the operation of the Facility.

10.3     BP shall have the right, at BP's expense, to monitor and check the
         measurement of Product from the Facility into the tanks of the ship,
         barge or other inland water or marine vessel into which Product is
         loaded or delivered, in the presence of an independent surveyor, at
         BP's





                                      -17-
<PAGE>   21
         expense. Any reports and certifications resulting from such monitoring
         and checking will be made available by BP to Sterling on request.

10.4     The determination of the quantity of Product deliveries hereunder
         shall be made by taking the opening and closing inventory of Sterling
         properly calibrated static shore tanks before and after each shipment.

10.5     The determination of the quantity of Product and Co-Product for
         pipeline in-Plant transport shall be made by suitable meter(s) and any
         other necessary equipment designated by Sterling. The determination of
         the quantity of Raw Materials, if any, provided by BP hereunder,
         including by means of pipeline, shall be made in the same manner as
         set forth in Section 10.4 and this Section 10.5.

10.6     Each party shall have the right to be present at the time any
         installing, reading, cleaning, changing, repairing, inspecting,
         testing or adjusting is done in connection with the Measuring
         Equipment used in measuring deliveries hereunder. The records from
         such Measuring Equipment shall remain the property of the owner
         thereof, but, upon request, each party will submit to the other party
         its records, charts and weight tickets, together with calculations
         therefrom, subject to return within 15 days after receipt thereof.
         Such records, charts and weight tickets shall be kept on file for a
         period of not less than 90 days.

10.7     If upon any test the Measuring Equipment is found to be inaccurate in
         the aggregate by 2% or more, any payment based upon such measurements
         shall be corrected at the rate of such inaccuracy for any period of
         inaccuracy which is definitely known or agreed upon, or if not known
         or agreed upon, then for a period extending back one- half of the time
         elapsed since the last successful test. Following any test, any
         Measuring Equipment found to be inaccurate





                                      -18-
<PAGE>   22
         to any degree shall be adjusted as soon as practicable to measure
         accurately. If for any reason any Measuring Equipment is out of
         service or out of repair so that the quantity delivered cannot be
         ascertained or computed from the readings thereof, the quantity so
         delivered during the period the Measuring Equipment is out of service
         or out of repair shall be estimated and agreed upon by the parties
         upon the basis of the best available data, using the first of the
         following methods which is feasible:

         (a)     by using the results of any check measuring equipment or other
                 measuring device of BP, if installed and measuring accurately;

         (b)     by using the ship's records of tank measurements where Product
                 has been loaded onto (or Raw Materials unloaded from) a ship;

         (c)     by correcting the error if the percentage of error is
                 ascertainable by test or mathematical calculation; or

         (d)     by estimating the quantity of deliveries during preceding
                 periods under similar conditions when the Measuring Equipment
                 was measuring accurately.

10.8     Notwithstanding the foregoing, Sterling's measurements shall be deemed
         to be accurate for purposes of all deliveries made hereunder unless,
         as to any particular delivery, BP objects thereto in writing delivered
         to Sterling within three weeks after receipt of notice of inaccurate
         measurement from BP's customer, but in no event greater than 90 days
         from the date of shipment.





                                      -19-
<PAGE>   23
***.
                            Article 12 - Co-Products

12.1     The parties shall have the benefit of Co-Products produced at the
         Facility in proportion to the respective pounds of Product actually
         taken or retained, as the case may be, by such parties hereunder. ***
         In no event shall Co-Products be taken from or delivered off the Plant
         site unless they have first been converted to a form deemed safe for
         transport by both BP and Sterling.

                       Article 13 - Capital Expenditures

13.1     Upon compliance by Sterling with the procedures contained in this
         Article 13 and the receipt by BP of an invoice therefor, BP shall ***.

13.2     On or before October 1 of each Contract Year, Sterling shall prepare
         and submit to BP a capital budget for the next succeeding Contract
         Year (the "Capital Budget") including (i) with respect to each
         proposed or continuing Capital Project for which the Capital
         Expenditures related thereto are anticipated to exceed *** in such
         Contract Year (each, a "Major Capital Project"), a description of such
         Major Capital Project in reasonable detail (including, to the extent
         known at such time, a brief description of such Capital Project, the
         estimated costs thereof and any anticipated benefits), and an estimate
         of the Capital Expenditures anticipated to be made in connection with
         such Major Capital Project during such Contract Year, and (ii) with
         respect to any proposed or continuing Capital Projects for which the
         Capital Expenditures related thereto are anticipated to be less than
         or equal to *** on an individual basis in such Contract Year ("Minor
         Capital Projects"), an estimate of the





                                      -20-
<PAGE>   24
         aggregate amount of Capital Expenditures anticipated to be made in
         connection with such Minor Capital Projects during such Contract Year
         (the "Minor Capital Projects Budget").  BP shall, on or before the
         next succeeding January 1, approve the Capital Budget in whole or in
         part; provided that Sterling has provided BP with the description of
         each Major Capital Project included in the Capital Budget, as required
         under this Section 13.2.  Sterling may submit any portion of the
         Capital Budget which is not approved by BP for dispute resolution
         under Article 21 and, if the matter is ultimately submitted to
         arbitration, the arbitrators shall determine whether all or any
         portion of such disputed matter should have been approved by BP based
         upon whether or not the disputed matter would have been implemented by
         a prudent operator in like circumstances in the acrylonitrile
         manufacturing business.  Prior to making any Capital Expenditure in
         connection with a Major Capital Project, Sterling shall, to the extent
         practicable under the circumstances, consult with BP with respect to
         such Major Capital Project and give BP the opportunity to propose
         alternative approaches to such Major Capital Project which it believes
         will reduce costs.  In the event that Sterling and BP disagree on the
         approach to any Major Capital Project, Sterling shall be entitled to
         proceed with such Major Capital Project in such manner as it deems
         advisable, in its sole discretion, and the matter shall be referred
         for dispute resolution under Article 21 and, if the matter is
         ultimately submitted to arbitration, the arbitrators shall determine
         which of Sterling's and BP's respective approaches would have been
         pursued by a prudent operator in like circumstances in the
         acrylonitrile manufacturing business and estimate the cost of BP's
         approach.  The costs and expenses of Sterling's approach shall be
         deemed to be Capital Expenditures hereunder if the arbitrators choose
         Sterling's approach.  The estimated costs and expenses





                                      -21-
<PAGE>   25
         of BP's approach (as determined by the arbitrators) shall be deemed to
         be Capital Expenditures hereunder if the arbitrators choose BP's
         approach; provided, however, that Section 3.5 shall not apply to such
         approach or any savings which would have been realized had BP's
         approach been implemented.

13.3     Prior to commencement of a Major Capital Project included in the
         Capital Budget, Sterling shall furnish BP with the details of the
         proposed Capital Expenditure including (i) the anticipated cost of
         such proposed Major Capital Project, (ii) the anticipated benefits of
         such proposed Major Capital Project, (iii) the anticipated effect of
         such proposed Major Capital Project on one or more of the Variable
         Cost Component, the Fixed Cost Component, production rates of the
         Facility, safety and environmental and the quality of Product, and
         (iv) an estimated time-table for completion of such proposed Major
         Capital Project and the making of the Capital Expenditures associated
         therewith. Sterling shall not be required to furnish any of such
         information to BP as a condition to any disbursement from BP related
         to a Minor Capital Project; provided, however, that the aggregate
         amount of Capital Expenditures made during any Contract Year is less
         than or equal to the Minor Capital Projects Budget for such Contract
         Year.

13.4     Sterling may, at any time and from time to time, propose Major Capital
         Projects which are not included in the Capital Budget for the relevant
         Contract Year and/or Minor Capital Projects which will cause the
         aggregate amount of Capital Expenditures for the relevant Contract
         Year to exceed the Minor Capital Projects Budget; provided, however,
         that BP shall not be obligated to reimburse Sterling for any Capital
         Expenditures made in connection with any such Capital Project unless
         and until BP has approved such Capital Project.  In the event





                                      -22-
<PAGE>   26
         that Sterling is required to make any Capital Expenditure on an
         emergency basis, BP will not thereafter unreasonably withhold or delay
         approval of the related Capital Project or reimbursement of such
         Capital Expenditures.  Sterling will provide BP with notice of any
         Capital Expenditure made on an emergency basis as soon as practicable
         after it has made such Capital Expenditure.

13.5     Any Capital Project for which BP has reimbursed Sterling for a portion
         of the Capital Expenditures in accordance with the terms of this
         Agreement shall, unless otherwise agreed by the parties, be deemed to
         have a useful life of ten years and the Capital Expenditures
         associated therewith shall be amortized on a straight- line basis.  If
         this Agreement is terminated (or rejected in connection with any
         bankruptcy proceeding) prior to the end of the useful life of any such
         Capital Project, Sterling shall, within 90 days after the date of such
         termination or rejection, ***.

13.6     BP shall be entitled to the benefit of any and all depreciation and
         amortization or expense deductions with respect to the portion of any
         Capital Expenditures for which BP has reimbursed Sterling and Sterling
         shall be entitled to the benefit of any and all depreciation and
         amortization or expense deductions with respect to the portion of any
         Capital Expenditures which has not been reimbursed by BP.

                             Article 14 - Personnel

Sterling shall at all times have sole authority with respect to all personnel
matters involving the employees, consultants and third-party contractors at the
Facility, including salaries, benefits, compensation, indirect personnel costs,
manpower needs, training, insurance, labor matters, working





                                      -23-
<PAGE>   27
hours, job responsibilities, bonding and all other employee, personnel-related
and contracting matters.

                 Article 15 - BP Security Interests; Insurance

15.1     Sterling has granted to BP, and hereby reaffirms such grant to BP of,
         a first security interest in and lien on the first production of
         Product and the receivables and proceeds therefrom generated from the
         sale of such Product from the Facility to the extent of BP's Right and
         a first security interest in and lien on the Third Reactor, including
         associated equipment, (subject to customary exceptions as to
         immaterial liens and charges) to secure the performance of Sterling's
         obligations under this Agreement and shall execute any necessary
         financing statement, mortgage and other documents to perfect such
         interests and shall cause any current lien holders on Product and the
         Third Reactor to subordinate their security interests and liens to the
         above security interests and liens of BP.  Subject to the foregoing
         rights of BP and obligations of Sterling, Sterling shall have the
         right to pledge, mortgage and grant security interests in the
         Facility, Product, Co- Products and this Agreement as collateral
         security for loans or other financing.  The documents granting BP a
         security interest and lien shall provide to BP appropriate access
         rights to the collateral should a Sterling Event of Default thereunder
         occur and be continuing.

15.2     During the term of this Agreement, insurance on the Facility and those
         parts of the Plant which serve the Facility shall be maintained by
         Sterling in types and amounts agreed to by BP and Sterling or, in the
         absence of any agreement, as described in Schedule 15.2; but BP and
         Sterling may each carry additional insurance, at its sole discretion
         and cost.  Sterling shall make BP an additional insured under the
         policies evidencing such insurance coverages





                                      -24-
<PAGE>   28
         for liability purposes only.  In the event of a fire, explosion,
         flood, hurricane or windstorm or other casualty resulting in the loss
         of the Facility or a substantial part thereof, and Sterling and BP
         cannot agree whether or not the Facility should be repaired, Sterling
         shall have the right to require the Facility to be repaired and that
         the insurance proceeds first be applied to the payment of all repair
         costs and the parties' obligations under this Agreement shall
         continue, but Sterling shall bear all costs of such repair in excess
         of the proceeds of insurance and shall have the right to fully
         depreciate such repair costs.

                Article 16 - Access to Information and Facility

16.1     For purposes of verifying any information pertinent to this Agreement,
         upon written request by BP from time to time, subject to the receipt
         by Sterling of appropriate confidentiality agreements, Sterling shall
         provide to an independent third party accountant selected by BP, at
         reasonable times during normal business hours, access to Sterling's
         books, records and accounts relating to this Agreement, except as such
         access may be prohibited by law or presently existing third party
         confidentiality agreements. Such independent third party accountant
         shall thereupon have the right to make copies of and abstracts from
         such books, records and accounts, at BP's expense, which copies may be
         removed from the premises of Sterling and retained by such accountant,
         subject to the terms of any confidentiality agreement between Sterling
         and BP regarding use of such information. It is agreed that such
         accountant may report to BP only its conclusions resulting from such
         accountant's review of Sterling data, and nothing else.





                                      -25-
<PAGE>   29
16.2     Sterling agrees to permit representatives of BP, at BP's expense, to
         have access to the Facility at reasonable times and on reasonable
         notice to obtain information relating to the present or proposed
         operations thereof to the extent related to this Agreement so long as
         such access does not violate existing third party confidentiality
         agreements or materially disrupt the operation of the Facility. BP
         agrees to furnish Sterling with copies of all information and audits
         obtained or prepared pursuant to the provisions of this Section.

16.3     For purposes of verifying any information pertinent to the Agreement,
         upon written request by Sterling from time to time, subject to the
         receipt by BP of appropriate confidentiality agreements, BP shall
         provide to an independent third party accountant selected by Sterling,
         at reasonable times during normal business hours, access to BP's
         books, records and accounts relating to this Agreement, except as such
         access may be prohibited by law or presently existing third party
         confidentiality agreements.  Such independent third party accountant
         shall thereupon have the right to make copies of and abstracts from
         such books, records and accounts, at Sterling's expense, which copies
         may be removed from the premises of BP and retained by such
         accountant, subject to the terms of any confidentiality agreement
         between BP and Sterling regarding use of such information.  It is
         agreed that such accountant may report to Sterling only its
         conclusions resulting from such accountant's review of BP data, and
         nothing else.





                                      -26-
<PAGE>   30
                  Article 17 - Representations and Warranties

17.1     Sterling represents and warrants to BP as follows:

         (a)     Organization, Good Standing and Corporate Power.  Sterling is
                 a corporation, duly organized, validly existing and in good
                 standing under the laws of the State of Delaware, is duly
                 qualified to do business as a foreign corporation in the State
                 of Texas, and has all requisite corporate power and authority
                 to carry on its business as presently conducted, to enter into
                 this Agreement and perform its obligations hereunder.

         (b)     Authority Relative to Agreement.  The execution, delivery and
                 performance by Sterling of this Agreement have been duly and
                 effectively authorized by all necessary corporate action.
                 This Agreement has been duly executed and delivered by
                 Sterling and constitutes a legal, valid and binding obligation
                 of Sterling enforceable in accordance with its terms, except
                 as such enforcement may be limited by applicable bankruptcy,
                 insolvency, reorganization or similar Laws affecting
                 creditors' rights generally and general equitable principles.

         (c)     No Conflict with Other Instruments or Proceedings.  Neither
                 the execution and delivery of this Agreement, nor the
                 performance or compliance with the terms and conditions
                 hereof, conflict with, or will result in a breach by Sterling
                 of, or constitute a default under, or result in the creation
                 of any lien, charge or encumbrance (other than those set forth
                 herein) upon, any asset of Sterling pursuant to any of the
                 terms, conditions or provisions of (i) the Certificate of
                 Incorporation or Bylaws of Sterling, (ii) any mortgage, deed
                 of trust, lease, contract, agreement or other instrument to





                                      -27-
<PAGE>   31
                 which Sterling is a party or by which Sterling may be bound or
                 affected or (iii) any writ, order, judgment, decree, statute,
                 ordinance, regulation or any other restriction of any kind or
                 character, to which Sterling is subject, or by which Sterling
                 may be bound or affected.

         (d)     No Litigation or Agency Proceedings.  As of the Effective
                 Date, except as expressly set forth in writing delivered by
                 Sterling to BP, there are no actions, suits, claims,
                 investigations or proceedings, private or governmental,
                 pending or to Sterling's knowledge threatened against Sterling
                 at law or in equity or before or by any federal, state,
                 municipal or other governmental or non-governmental
                 department, commission, board, bureau, agency or
                 instrumentality seeking to enjoin, restrain or otherwise
                 prevent the execution and delivery of this Agreement by
                 Sterling, or any past or present environmental, safety or
                 health issue, matter or problem pertaining to the Plant or the
                 Facility that would diminish the ability of BP to fully enjoy
                 all of its rights and privileges under this Agreement.

         (e)     EXCEPT AS OTHERWISE EXPRESSLY PROVIDED HEREIN, STERLING HEREBY
                 EXPRESSLY DISCLAIMS AND NEGATES (i) ANY REPRESENTATION OR
                 WARRANTY (EXPRESS, IMPLIED, COMMON LAW, STATUTORY OR
                 OTHERWISE) RELATING TO THE FACILITY, ANY PRODUCT OR
                 CO-PRODUCT, THE THIRD REACTOR, THE OPERATION OF ANY OF THE
                 FOREGOING, OR ANY OTHER TANGIBLE PERSONAL PROPERTY AND
                 FIXTURES INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF
                 MERCHANTABILITY OR FITNESS FOR A PARTICULAR





                                      -28-
<PAGE>   32
                 PURPOSE OR FITNESS OF DESIGN OR ENGINEERING, AND (ii) ANY
                 IMPLIED REPRESENTATION OR WARRANTY RELATING TO ANY PRODUCT OR
                 CO-PRODUCT SOLD HEREUNDER, INCLUDING, BUT NOT LIMITED TO, ANY
                 IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
                 PARTICULAR PURPOSE OR FITNESS OF DESIGN OR ENGINEERING.

17.2     BP represents and warrants to Sterling as follows:

         (a)     Organization.  BP is a corporation duly organized, validly
                 existing and in good standing under the laws of the State of
                 Ohio and is duly qualified to do business as a foreign
                 corporation in the State of Texas, and has all requisite
                 corporate power and authority to carry on its business as
                 currently conducted and to enter into this Agreement and
                 perform its obligations hereunder.

         (b)     Authority Relative to Agreement.  The execution, delivery and
                 performance by BP of this Agreement have been duly and
                 effectively authorized by all necessary corporate action.
                 This Agreement has been duly executed and delivered by BP and
                 constitutes a legal, valid and binding obligation of BP
                 enforceable in accordance with its terms, except as such
                 enforcement may be limited by applicable bankruptcy,
                 insolvency, reorganization or similar Laws affecting
                 creditors' rights generally and general equitable principles.

         (c)     No Conflict with Other Instruments or Proceedings.  Neither
                 the execution and delivery of this Agreement, nor the
                 performance or compliance with the terms and conditions
                 hereof, conflict with, or will result in a breach by BP of, or
                 constitute a





                                      -29-
<PAGE>   33
                 default under, or result in the creation of any lien, charge
                 or encumbrance upon, any of its assets pursuant to any of the
                 terms, conditions or provisions of (i) the Certificate of
                 Incorporation or Bylaws of BP, (ii) any mortgage, deed of
                 trust, lease, contract, agreement or other instrument to which
                 BP is a party or by which BP may be bound or affected or (iii)
                 any writ, order, judgment, decree, statute, ordinance,
                 regulation or any other restriction of any kind or character,
                 to which BP is subject, or by which BP may be bound or
                 affected.

         (d)     No Litigation or Agency Proceedings.  As of the Effective
                 Date, except as expressly set forth in writing delivered by BP
                 to Sterling, there are no actions, suits, claims,
                 investigations or proceedings, private or governmental,
                 pending or to BP's knowledge threatened against BP at law or
                 in equity or before or by any federal, state, municipal or
                 other governmental or  non-governmental department,
                 commission, board, bureau, agency or instrumentality seeking
                 to enjoin, restrain or otherwise prevent the execution and
                 delivery of this Agreement by BP.

         (e)     EXCEPT AS OTHERWISE PROVIDED HEREIN, IN THE LICENSE AGREEMENT
                 OR IN THE CATALYST SALES CONTRACT, BP HEREBY EXPRESSLY
                 DISCLAIMS AND NEGATES (i) ANY REPRESENTATION OR WARRANTY
                 (EXPRESS, IMPLIED, COMMON LAW, STATUTORY OR OTHERWISE)
                 RELATING TO THE CATALYST, ANY RAW MATERIALS SUPPLIED BY BP, OR
                 THE NEW TECHNOLOGY INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
                 OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR
                 FITNESS OF DESIGN OR ENGINEERING,





                                      -30-
<PAGE>   34
                 AND (ii) ANY IMPLIED REPRESENTATIONS OR WARRANTY RELATING TO
                 THE FOREGOING INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED
                 WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
                 PURPOSE OR FITNESS    OF DESIGN OR ENGINEERING.

                           Article 18 - Force Majeure

18.1     In the event of either party being rendered unable, wholly or in part,
         by Force Majeure to carry out its obligations under this Agreement
         (other than any obligation to make payment of any amount when due and
         payable hereunder), it is agreed that on such party giving notice and
         reasonably full particulars of such Force Majeure in writing to the
         other party within a reasonable time after the occurrence of the cause
         relied on, then the obligations of the party giving such notice, so
         far as they are affected by such Force Majeure, shall be suspended
         during the continuance of any inability so caused, but for no longer
         period, and such cause shall so far as possible be remedied with all
         reasonable dispatch.

18.2     It is understood and agreed that the settlement of strikes or lockouts
         shall be entirely within the discretion of the party having the
         difficulty, and that the above requirement that any Force Majeure
         shall be remedied with all reasonable dispatch shall not require the
         settlement of strikes or lockouts by acceding to the demands of the
         opposing party when such course is inadvisable in the discretion of
         the party having the difficulty.

18.3     Notwithstanding the definitions of Force Majeure herein and the
         provisions of Section 18.1 hereof, the failure by either party to
         perform any of its obligations under this Agreement shall be deemed
         not to have been caused by circumstances reasonably outside its
         control if such failure results from breakage or accident to
         machinery, equipment, lines of pipe or other





                                      -31-
<PAGE>   35
         property or the partial or entire failure thereof or the necessity to
         make repairs or alterations thereto which result from normal wear and
         tear which could be reasonably anticipated by a reasonably prudent
         operator or in circumstances where a reasonably prudent operator would
         have standby equipment or spare parts.

18.4     In the event that for any reason maintenance, utilities, any pipelines
         or other services and resources at or servicing the Plant become
         limited, Sterling agrees that it will in good faith allocate such
         maintenance utilities, pipelines, services and resources between the
         Facility and the other activities at the Plant on a fair and equitable
         basis having regard to the needs of BP hereunder and third parties
         under contracts for the sale by Sterling of other chemicals produced
         in the Plant.

                          Article 19 - Indemnification

19.1     Except as otherwise provided herein, Sterling, from and after the
         Effective Date, shall defend, indemnify and hold harmless BP, its
         affiliates, their respective present and former directors, officers
         and stockholders and their respective heirs, executors, personal
         representatives, administrators, successors and assigns ("BP
         Indemnified Persons") from and against any and all Damages suffered or
         incurred by BP on account of or arising from or related to the breach
         of, or the failure to perform or satisfy any of, the representations,
         warranties, covenants or agreements made by Sterling in or under this
         Agreement, or any liability to any party whether incurred under
         statute or in tort arising directly or indirectly from the operations
         carried on by or on behalf of Sterling at or in connection with the
         Facility, the Plant, or any Product (prior to the time risk of loss
         has passed to BP) or any Co-Product or arising out of Spills or
         Releases (whether occurring before or after the termination





                                      -32-
<PAGE>   36
         of this Agreement), except and to the extent that (i) such Damages
         arise out of or relate to any theory of product liability, including
         those covering the manufacture, sale, introduction into commerce or
         use of Product for which risk of loss has passed to BP, (ii) such
         Damages arise out of Spills or Releases that are attributable to the
         acts, omissions, or default of BP, (iii) such Damages are payable to
         an employee of BP or (iv) such Damages arise out of or result from a
         material breach by BP of its obligations under this Agreement or the
         gross negligence, fraud or willful misconduct of any BP Indemnified
         Person.

19.2     Except as otherwise provided herein, BP, from and after the Effective
         Date, shall defend, indemnify and hold harmless Sterling, its
         affiliates, their respective present and former directors, officers
         and stockholders and their respective heirs, executors, personal
         representatives, administrators, successors and assigns ("Sterling
         Indemnified Persons") from and against any and all Damages suffered or
         incurred by Sterling on account of or arising from or related to the
         breach of, or the failure to perform or satisfy any of, the
         representations, warranties, covenants, or agreements made by BP in or
         under this Agreement, or any liability to any party whether incurred
         under statute or in tort arising directly or indirectly from the
         actions of BP carried out at or in connection with the Facility, the
         Plant, any Product or any Co-Product or arising out of Spills and
         Releases (which Spills and Releases have occurred during the Initial
         Term or any Additional Term) to the extent that the Damages arising
         out of such Spills and Releases are attributable to the acts,
         omissions or default of BP, including Damages arising from or relating
         to any theory of product liability, including those covering the
         manufacture, sale, introduction into commerce or use of Product on and
         after the time risk of loss has passed to BP, excepting any Damages





                                      -33-
<PAGE>   37
         (i) payable to employees of Sterling or (ii) arising out of or
         resulting from a material breach by Sterling of its obligations under
         this Agreement or the gross negligence, fraud or willful misconduct of
         any Sterling Indemnified Person.

19.3     BP and Sterling each agree that promptly after any of its officers
         becomes aware of the discovery of facts giving rise to a claim by it
         for indemnification hereunder (each, a "Claim"), such party will
         provide notice thereof in writing to the other party. The failure of
         either party to so notify the other party of a Claim shall relieve the
         other party from any liability in respect of such Claim to the extent
         such other party is prejudiced by the failure to receive timely
         notice. For purposes of this Section 19.3, receipt by a party of
         notice of any demand, assertion, claim, action to proceedings
         (judicial, administrative or otherwise) by or from any Person (other
         than the other party to this Agreement) ("Third Party Action") which
         may give rise to a Claim on behalf of such party shall constitute the
         discovery of facts giving rise to a Claim by it and shall require
         prompt notice of the receipt of such matter as provided in the first
         sentence of this Section 19.3.  Any notice pursuant to this Section
         19.3 shall set forth all information respecting such Claim and the
         Third Party Action, if any, as such party shall then have and shall
         contain a statement to the effect that the party giving the notice is
         making a Claim pursuant to and formal demand for indemnification under
         this Article 19.

19.4     For purposes of this Article 19, the term "Indemnifying Party" as to a
         particular Claim or Third Party Action shall mean the party having or
         which is held to have an obligation to indemnify the other party with
         respect to such Claim or Third Party Action pursuant to this Article
         19 and the term "Indemnified Party" as to a particular Claim or Third
         Party Action





                                      -34-
<PAGE>   38
         shall mean the party having or which is held to have the right to be
         indemnified with respect to such Claim or Third Party Action by the
         other party pursuant to this Article 19.

19.5     Except as otherwise expressly provided herein, Indemnifying Party
         shall be entitled at its cost and expense to contest and defend by all
         appropriate legal proceedings any Third Party Action with respect to
         which it is called upon to indemnify Indemnified Party under the
         provisions of this Agreement; provided, however, that with respect to
         any Claim arising from the assertion of any Third Party Action, notice
         of the intention so to contest shall be delivered by Indemnifying
         Party to Indemnified Party within 20 days from the date of mailing to
         Indemnifying Party of notice by Indemnified Party of the assertion of
         the Third Party Action.  Any such contest with respect to a Third
         Party Action may be conducted in the name and on behalf of
         Indemnifying Party or the Indemnified Party as may be appropriate.
         Except as otherwise expressly provided herein, such contest shall be
         conducted by attorneys employed by Indemnifying Party, but Indemnified
         Party shall have the right to participate in such proceedings and to
         be represented by attorneys of its own choosing at its cost and
         expense.  If Indemnified Party joins in any such contest, Indemnified
         Party shall have full authority to determine all action to be taken
         with respect thereto. If after notice as provided for herein,
         Indemnifying Party does not elect to contest any Third Party Action as
         provided in this Section 19.5, Indemnifying Party shall be bound by
         the result obtained with respect thereto by Indemnified Party and the
         Indemnified Party may (but shall have no obligation to) contest any
         such Third Party Action or settle or admit liability with respect
         thereto, all for the account of Indemnifying Party. At any time after
         the commencement of defense of any such Third Party Action,
         Indemnifying Party may request Indemnified Party





                                      -35-
<PAGE>   39
         to agree in writing to the abandonment of such contest or the payment
         or compromise by Indemnifying Party of the asserted Third Party Action
         whereupon such action shall be taken unless Indemnified Party so
         determines that the contest should be continued, and so notifies
         Indemnifying Party in writing within 15 days of such request from
         Indemnifying Party. In the event that Indemnified Party determines
         that the contest should be continued, Indemnifying Party shall be
         liable with respect to such Third Party Action only to the extent of
         the lesser of (i) the amount which the third party taking the Third
         Party Action had agreed to accept in payment or compromise as of the
         time Indemnifying Party made its request therefor to Indemnified
         Party, or (ii) such amount for which Indemnifying Party may be liable
         with respect to such Claim by reason of the provisions hereof.

19.6     If requested by Indemnifying Party, Indemnified Party agrees to
         provide reasonable cooperation to Indemnifying Party and its counsel
         in contesting any Third Party Action which Indemnifying Party elects
         to contest or, if appropriate, in making any counter-claim against the
         third party taking the Third Party Action, or any cross-complaint
         against any other Person not a party hereto, but Indemnifying Party
         will reimburse Indemnified Party for any expenses incurred by it in so
         cooperating.

19.7     Indemnified Party agrees to afford Indemnifying Party and its counsel
         the opportunity to be present at, and to participate in, conferences
         with all Persons taking Third Party Action against Indemnified Party
         or conference with representatives of or counsel for such Persons.

19.8     Indemnifying Party shall promptly pay Indemnified Party any amount due
         under this Article 19 and reimburse each Indemnified Party for all
         reasonable expenses (including reasonable counsel fees) for which
         Indemnified Party is entitled to be indemnified hereunder as they are





                                      -36-
<PAGE>   40
         incurred by such Indemnified Party.  Upon judgment, determination by a
         governmental authority having jurisdiction, settlement or compromise
         of any Third Party Action, Indemnifying Party shall promptly pay on
         behalf of Indemnified Party, and/or to Indemnified Party in
         reimbursement of any amount theretofore required to be paid by it
         pursuant to any judgment, determination by a governmental authority
         having jurisdiction, settlement or compromise, the amount so
         determined by such judgment, determination by such governmental
         authority, settlement or compromise, and all other Damages of
         Indemnified Party with respect thereto, unless in the case of a
         judgment or determination by such governmental authority an appeal is
         made from such judgment or determination; provided, however, that if
         Indemnifying Party desires to appeal from an adverse judgment or
         determination by such governmental authority, then Indemnifying Party
         shall post and pay the cost of the security or bond to stay execution
         of such judgment or determination pending appeal.  Upon the payment in
         full by Indemnifying Party of the amounts described in this Section
         19.8, Indemnifying Party shall succeed to the rights of Indemnified
         Party, to the extent such rights are not waived in settlement, against
         the third party in such Third Party Action.

19.9     In no event shall either party be liable to the other for damages
         other than Damages.





                                      -37-
<PAGE>   41
                            Article 20 - Assignment

20.1     Except where all or substantially all of the assets of Sterling are
         sold or otherwise transferred to or Sterling is merged with or
         acquired by another Person, Sterling shall not assign its rights or
         obligations under this Agreement without BP's prior written consent,
         which consent shall not be unreasonably withheld, delayed or
         conditioned.

20.2     BP may assign its rights or delegate its duties and obligations
         hereunder to any Person without the consent of Sterling provided that:

         (a)     Such assignee is of sound financial condition and, in BP's
                 good faith judgment, able timely to perform BP's obligations
                 under this Agreement; and

         (b)     Within ten days after a request by Sterling, BP executes a
                 written guarantee of such assignee's timely performance of
                 BP's obligations hereunder, containing provisions usually and
                 customarily contained in guarantees of financial performance
                 in the United States.

20.3     Notwithstanding any assignment of any of its rights or any delegation
         of any of its duties by BP under this Agreement, whether permitted
         hereby or otherwise, BP shall continue to be responsible for its
         obligations hereunder, and does hereby unconditionally and absolutely
         guarantee the timely payment of all sums due, and the timely
         performance of all obligations, by any such assignee hereunder (the
         "Obligations").  On default by any such assignee, Sterling may, at its
         option, proceed directly and at once against BP to enforce BP's
         obligations hereunder, and exercise all remedies available hereunder,
         without notice to such assignee or the necessity for proceeding or
         taking any action against such assignee.





                                      -38-
<PAGE>   42
20.4     Any attempted assignment or delegation by either party hereto not
         otherwise permitted hereby which is made without the prior written
         consent of the other party shall be ineffective and void for all
         purposes.

20.5     Notwithstanding the foregoing, Sterling may assign its rights
         hereunder as collateral to financial institutions, but any such
         assignment shall be subject to BP's security interests and liens
         referred to in Article 15.

                Article 21 - Dispute Resolution and Arbitration

21.1     In the event of a dispute, difference or question arising out of or
         relating to this Agreement or the License Agreement which the parties
         are unable to resolve within 30 days, the parties agree to promptly
         refer such dispute to a committee comprised of two members appointed
         by Sterling (General Manger Acrylonitrile and Technical Service
         Manager Acrylonitrile) and two members appointed by BP (Manager of
         Planning and Development and Director of Acrylonitrile Engineering and
         Technology) ("Dispute Resolution Committee").  If the Dispute
         Resolution Committee does not unanimously approve a resolution within
         30 days, the parties shall promptly advise their respective chief
         executive officers ("CEOs") of their inability to reach agreement
         through informal discussion within the required time limits, and shall
         within ten days of the passing of such time limits, submit the dispute
         to their respective CEOs for resolution.  In the event that the CEOs
         fail to amicably resolve the dispute within 30 days of such referral,
         the dispute shall be settled by binding arbitration as set forth
         below.

21.2     All disputes, differences or questions arising out of or relating to
         this Agreement or the License Agreement (including those as to the
         validity, interpretation, breach, violation or termination hereof)
         which are not resolved pursuant to Section 21.1 above shall be finally





                                      -39-
<PAGE>   43
         determined and settled pursuant to arbitration in Houston, Texas, by
         three arbitrators, one to be appointed by Sterling, one to be
         appointed by BP, and a neutral arbitrator to be appointed by such two
         party-appointed arbitrators. The neutral arbitrator shall be an
         attorney and shall act as chair-person. Any such arbitration may be
         initiated by a party by written notice ("Arbitration Notice") to the
         other party specifying the subject of the requested arbitration and
         appointing such party's arbitrator for such arbitration.  The panel of
         arbitrators shall be empowered to impose sanctions, permit or order
         depositions and discovery and to take such other actions as they deem
         necessary to the same extent a judge could pursuant to the Federal
         Rules of Civil Procedure and applicable law.  With respect to any
         matter subject to arbitration hereunder, each party agrees that all
         discovery activities shall be expressly limited to matters directly
         relevant to such matter and the panel of arbitrators shall be required
         to fully enforce this requirement.

21.3     Should (i) a party receiving an Arbitration Notice fail to appoint an
         arbitrator as hereinabove contemplated by written notice to the party
         giving the Arbitration Notice within 20 days after the receipt of the
         Arbitration Notice, or (ii) the two arbitrators appointed by or on
         behalf of the parties as contemplated in Section 21.2 hereof fail to
         appoint a neutral arbitrator as hereinabove contemplated within 20
         days after the date of the appointment of the last arbitrator
         appointed by or on behalf of the parties, then a Judge of the United
         States District Court for the Southern District of Texas, Houston
         Division, upon application of Sterling or of BP, shall appoint an
         arbitrator to fill any such position with the same force and effect as
         though such arbitrator had been appointed as hereinabove contemplated.





                                      -40-
<PAGE>   44
21.4     The arbitration proceeding shall be conducted in the English language
         in Houston, Texas, in accordance with the Rules of the American
         Arbitration Association.  Each of the parties may, by summary
         proceedings (e.g., a plea in abatement or motion to stay further
         proceedings) bring any action in any court of competent jurisdiction
         to (i) compel arbitration of any dispute, difference or question
         arising out of or related to this Agreement or the License Agreement,
         (ii) obtain interim measures of protection pending arbitration of any
         dispute, difference or question and/or (iii) enforce any decision of
         the arbitrators, including the final award.  A determination, award or
         other action shall be considered the valid action of the arbitrators
         if supported by the affirmative vote of two or three of the three
         arbitrators.  The costs of arbitration (exclusive of the expense of a
         party in obtaining and presenting evidence and attending the
         arbitration, and of the fees and expenses of legal counsel to such
         party, all of which shall be borne by such party) shall be shared
         equally by the Sterling and BP.  The arbitration award shall be final
         and conclusive and shall receive recognition, and judgment upon such
         award may be entered and enforced in any court of competent
         jurisdiction.

             Article 22 - Confidentiality and Intellectual Property

22.1     During the term of this Agreement and thereafter, except for the New
         Technology and other technology subject to the License Agreement, all
         information relating to the business, products, assets and finances of
         Sterling shall be treated as proprietary to Sterling and as
         confidential by BP and shall not be disclosed by BP or its officers,
         employees, agents, affiliates or representatives to any third party,
         or used for the benefit of, BP or any other Person except as otherwise
         specifically provided herein. At the termination of the Initial





                                      -41-
<PAGE>   45
         Term or any Additional Term, the obligations as to confidentiality
         herein shall continue for a period of five years from the date of such
         termination.

22.2     During the term of this Agreement and thereafter, except for the New
         Technology and other technology subject to the License Agreement, all
         information relating to the business, products, assets and finances of
         BP shall be treated as proprietary to BP and as confidential by
         Sterling and shall not be disclosed by Sterling or its officers,
         employees, agents, affiliates or representatives to any third party,
         or used for the benefit of, Sterling or any other Person except as
         otherwise specifically provided herein. At the termination of the
         Initial Term or any Additional Term, the obligations as to
         confidentiality herein shall continue for a period of five years from
         the date of such termination.

                   Article 23 - Defaults; Failures; Remedies

23.1     If a Sterling Event of Default shall occur and be continuing, BP may,
         at its option, by written notice to Sterling, declare Sterling to be
         in default hereunder ("Declaration of Sterling Default"); provided,
         however, that a Declaration of Sterling Default shall not relieve or
         otherwise discharge Sterling from the performance of its obligations
         under this Agreement, except to the extent that the exercise by BP of
         its remedies pursuant to the provisions of Section 23.3 hereof
         otherwise prevents or restricts Sterling from fully performing its
         obligations under this Agreement.

23.2     If a BP Event of Default shall occur and be continuing, Sterling may,
         at its option, by written notice to BP, declare BP to be in default
         hereunder ("Declaration of BP Default"); provided, however, that a
         Declaration of BP Default shall not relieve or otherwise discharge BP
         from the performance of its obligations under this Agreement.





                                      -42-
<PAGE>   46
23.3     Subject to Article 24 hereof, upon a Declaration of Sterling Default,
         BP may, in addition to the remedies available to it at law or in
         equity, by written notice to Sterling, require Sterling to permit, and
         Sterling shall permit, at BP's risk but at Sterling's cost (subject to
         BP's duty to reasonably mitigate such cost), such employees of BP as
         BP may require to have access to the Facility and those parts of the
         Plant that serve the Facility for the purpose of seeking a solution to
         the cause of the Sterling Event of Default or failure, and Sterling
         shall cause its employees to cooperate with BP's said employees while
         present in the Facility; provided, however, that BP shall indemnify
         and hold Sterling harmless pursuant to the provisions of Article 19
         hereof from Damages which Sterling may suffer or incur by reason of
         permitting such employees of BP to have such access and, provided
         further, that BP shall not materially disrupt Sterling's operations at
         the Facility or those parts of the Plant that serve the Facility.
         BP's access to the Facility and those parts of the Plant that serve
         the Facility shall continue until the Facility has operated so as to
         enable Sterling to comply with its obligations hereunder for one
         Month.  BP shall thereupon withdraw its employees from the Facility.
         After withdrawing such employees, BP shall not have any rights
         pursuant to the provisions of this Section 23.3 of access to the
         Facility for a period of 30 days beginning on the date of such
         withdrawal. Once BP has withdrawn its employees, (i) if Sterling fails
         to operate the Facility during such 30 day period following such
         withdrawal by BP in such a manner as to enable Sterling to comply with
         its obligations under this Agreement, BP shall have the right to
         require Sterling to permit BP's employees to have access to the
         Facility and those parts of the Plant which serve the Facility
         immediately upon the expiration of such 30 day period, or (ii) if
         Sterling operates the Facility throughout such 30 day period following
         such





                                      -43-
<PAGE>   47
         withdrawal by BP in such a manner as to enable Sterling to comply with
         its obligations under this Agreement, BP shall have no right to
         require Sterling to permit BP's employees to have such access until a
         subsequent Declaration of Sterling Default, if any.

23.4     Subject to Article 24 hereof, upon a BP Event of Default, Sterling
         may, by written notice to BP, cease all further sales and deliveries
         of Product and/or Co-Product to BP under this Agreement until such
         time as BP complies with its obligations hereunder and may likewise
         exercise any and all other remedies available to it at law or in
         equity.

                             Article 24 - Survival

The representations, warranties, covenants and agreements contained herein,
together with all indemnity and payment obligations of any party hereto owing
to the other party (or its directors, officers or stockholders) on the date of
termination hereof or arising thereafter based on events or occurrences prior
to the termination of this Agreement shall survive such termination and for the
period of the applicable statute of limitations (or, if there is no such
statute, for the longest period permitted by law) with respect to such
obligations.

                           Article 25 - Miscellaneous

25.1     Notices.  Any notice provided for by this Agreement and any other
         notice, demand or communication which any party may wish to send to
         the other party shall be in writing and either delivered by (i)
         regular, overnight or registered or certified mail (return receipt
         requested), with first class postage prepaid, (ii) hand delivery,
         (iii) facsimile or electronic mail transmission or (iv) overnight
         courier service, to the parties at the following addresses or numbers:





                                      -44-
<PAGE>   48
         (a)     Sterling:        Sterling Chemicals, Inc.
                                  1200 Smith Street
                                  Houston, Texas 77002
                                  Attention:      General Manager -
                                                  Acrylonitrile
                                  Fax No.:        (713) 654-9551
                                  E-Mail:         [email protected]

         (b)     BP:              BP Chemicals Inc.
                                  4440 Warrensville Center Road
                                  Warrensville Heights, Ohio 44128-2837
                                  Attention:      Vice President
                                                  Marketing
                                  Fax No.:        (216) 586-3838
                                  E-Mail:         [email protected]

         Any address, number, or name specified above may be changed by a
         notice given by the addressee to the other parties in accordance with
         this Section. Any notice, demand or other communication shall be
         deemed given and effective (1) in the case of a notice sent by regular
         mail, on the date actually received by the addressee, (2) in the case
         of a notice sent by registered or certified mail, on the date
         receipted for (or refused) on the return receipt, (3) in the case of a
         notice delivered by hand, when personally delivered, (4) in the case
         of a notice sent by facsimile or electronic mail, upon transmission
         subject to telephone confirmation of receipt, and (5) in the case of a
         notice sent by overnight mail or courier service, the date delivered
         at the designated address, in each case given or addressed as
         aforesaid.  The inability to deliver because of changed address of
         which no notice was given, or the rejection or other refusal to accept
         any notice, demand or communication, shall be deemed to be the receipt
         of the notice, demand or communication as of the date of such
         inability to deliver or the rejection or refusal to accept.





                                      -45-
<PAGE>   49
25.2     Controlling Law.  All questions concerning the validity, operation and
         interpretation of this Agreement and the performance of the
         obligations imposed upon the parties hereunder shall be governed by
         the laws of the State of Texas.

25.3     Modifications and Waivers.  No cancellation, modification, amendment,
         deletion, addition or other change in this Agreement or any provision
         hereof, or waiver of any right or remedy herein provided, shall be
         effective for any purpose unless specifically set forth in writing
         signed by the party or parties to be bound thereby.  No failure or
         delay on the part of either of the parties hereto in exercising any
         right, power or privilege hereunder, and no course of dealing between
         the parties hereto, shall operate as a waiver of any right, power or
         privilege hereunder.  No single or partial exercise of any right,
         power or privilege hereunder shall preclude any other or further
         exercise thereof or the exercise of any other right, power or
         privilege hereunder.  No notice to or demand on either of the parties
         hereto in any case shall entitle such party to any other or further
         notice or demand in similar or other circumstances or constitute a
         waiver of the rights of either of the parties hereto to any other or
         further action in any circumstances without notice or demand.

25.4     Entire Agreement.  This Agreement supersedes all other agreements,
         oral or written, heretofore made with respect to the subject matter
         hereof and the transactions contemplated hereby, and contains the
         entire agreement of the parties.

25.5     Severability.  Any provisions hereof prohibited by or unlawful or
         unenforceable under any applicable law of any jurisdiction shall be
         ineffective as to such jurisdiction, without affecting any other
         provision of this Agreement, or shall be deemed to be severed or
         modified to conform with such law, and the remaining provisions of
         this Agreement shall





                                      -46-
<PAGE>   50
         remain in force, provided that the purpose of this Agreement can be
         effected. To the full extent, however, that the provisions of such
         applicable law may be waived, they are hereby waived, to the end that
         this Agreement is deemed to be a valid and binding agreement
         enforceable in accordance with its terms.

25.6     Counterparts.  This Agreement may be executed in multiple
         counterparts, each of which shall be deemed to be an original, and all
         of such counterparts together shall constitute but one and the same
         instrument.

25.7     Binding on Successors.  This Agreement shall be binding upon, and
         shall inure to the benefit of, the parties hereto and their respective
         successors and permitted assigns.

25.8     Public Statements.  The parties hereto agree to consult with one
         another prior to issuing any public announcement or statement with
         respect to the transactions contemplated herein.

25.9     No Partnership or Agency.  This Agreement shall not be construed to
         create a partnership, joint venture, association or other entity or
         business organization or to create a principal agent relationship
         between Sterling and BP. Except for the sale or transfer of Product
         and Co-Product to BP as contemplated hereby and the granting of the
         security interests and liens pursuant to Article 15, nothing in this
         Agreement shall be deemed to convey to BP any legal or beneficial
         ownership of the Facility.

25.10    Wire Funds, Etc.  All sums and amounts payable or to be payable
         pursuant to this Agreement shall be payable in immediately available
         funds and in coin or currency of the United States of America that, at
         the time of payment, is legal tender for the payment of public and
         private debts in the United States of America and shall be made by
         wire transfer of immediately available





                                      -47-
<PAGE>   51
         funds to such bank and/or account in the continental United States for
         the account of the payee as from time to time the payee shall have
         directed to the payor in writing, or, if no such direction shall have
         been given, by check to the payee in the manner and at the address set
         forth above. Whenever in this Agreement either party is required to
         pay or reimburse the other party upon receipt of invoice or otherwise
         when no due date for payment is specifically provided, payment shall
         be due ten Business Days after receipt of invoice or other statement,
         and shall be made in the manner set forth above.

         Executed as of the Effective Date.


                                             BP Chemicals Inc.





                                             By: /s/ Gary C. Greve            
                                                ------------------------------
                                                 Gary C. Greve, President



                                             Sterling Chemicals, Inc.



                                             By: /s/ Frank P. Diassi          
                                                ------------------------------
                                                 Frank P. Diassi, Chairman 
                                                   of the Board





                                      -48-
<PAGE>   52
                                   EXHIBIT A

                                  Definitions

         Additional Costs and Expenses means all additional direct and indirect
costs and expenses incurred by Sterling as a result of the failure by BP to
take the Minimum Annual Contract Quantity in any Contract Year or during the
one- year period following a termination date, including increased costs of
production of Product, increased incremental costs incurred in the operation of
the Facility and increased raw materials usages, utilities and other costs and
expenses.

         Additional Term is defined in Section 2.1 hereof.

         Agreement means this Amended and Restated Production Agreement.

         Arbitration Notice is defined in Section 21.2 hereof.

         Baseline Raw Materials Usage means ***.

         BP is defined in the introductory paragraph hereof.

         BP Event of Default means (i) the failure by BP to perform any of its
financial obligations hereunder or under the License Agreement which failure
shall continue for a period of ten days after notice from Sterling, (ii) the
failure of BP to perform any other covenants or agreements hereunder or under
the License Agreement to a material extent which failure continues for a period
of 30 days after receipt of written notice thereof by BP from Sterling or (iii)
the inaccuracy in any material respect of any representation or warranty made
by BP in this Agreement or in the License Agreement; provided, however, that
(a) with respect to an event described in (i) or (ii) above, if BP has
performed any such obligation, covenant or agreement or made any such payment
prior to the expiration of such ten or 30 day period, as applicable such
failure or default shall not constitute a BP Event of Default; and (b) a BP
Event of Default shall not be deemed to have occurred if BP is





                                      -1-
<PAGE>   53
challenging in good faith in accordance with Article 21 hereof a Declaration of
BP Event of Default, unless such Declaration of BP Event of Default is found by
a court or arbitration to be effective.

         BP Facilities is defined in Section 3.5(a) hereof.

         BP Indemnified Persons is defined in Section 19.1 hereof.

         BP Net Unrecouped Investment Amount shall mean the ***.

         BP's Share is defined in Section 12.1 hereof.

         Business Day means a day in the City of Houston, Harris County, Texas,
that is neither a Saturday, Sunday or legal holiday nor a day on which banking
institutions in Houston, Texas, Cleveland, Ohio or New York, New York are
obligated or permitted by law to close.

         Capital Budget is defined in Section 13.2 hereof.

         Capital Expenditures means expenditures (whether treated as capital or
expense for financial reporting or tax purposes) incurred to (i) acquire or
replace any asset for use on the Facility, (ii) add to (or improve) any asset
in the Facility or (iii) comply with environmental, safety or other Laws
applicable to the Facility or its operation.  Such expenditures shall be
classified in accordance with Sterling's usual and customary practices as it
applies them to its own expenditures.

         Capital Project means a project which requires Capital Expenditures.

         ***.

         ***.

         CEOs is defined in Section 21.1 hereof.

         Claim is defined in Section 19.3 hereof.

         Contract Year means a period of 12 consecutive Months beginning on the
first Day of January next following the Effective Date, and beginning on the
first Day of January of each





                                      -2-
<PAGE>   54
subsequent year during the Initial Term and, if applicable, any Additional
Term.  The period of time from the Effective Date until the first day of the
January next following the Effective Date, and the period of time from the
first day of January last occurring during the Initial Term or, if applicable,
any Additional Term, until the end of the Initial Term, or, if applicable, any
Additional Term, shall each be considered to be a Contract Year, provided that
in each such period the Minimum Annual Contract Quantity and the Maximum Annual
Contract Quantity shall be prorated.

         Co-Products means hydrogen cyanide (HCN), acetonitrile (ACN) and
derivatives thereof and any other materials reasonably agreed to by the
parties.

         Cross Termination Right is defined in Section 2.1 hereof.

         Damages means any and all damages, cash payments, expenses,
obligations, claims, liabilities, fines, penalties, clean-up or remedial costs,
shut-down costs, repairs or reconstruction costs, costs of investigation,
attorneys' fees, court costs, and operating, extraordinary, business
interruption and other losses, including any such matters arising from Spills
or Releases but otherwise excluding consequential, incidental, special,
punitive or indirect damages.

         Day means the 24-hour period commencing at 7:00 a.m. Houston, Texas
time on one calendar day and ending at 7:00 a.m. Houston, Texas time on the
following calendar day. The date of a Day shall be that of its beginning.

         Declaration of BP Default is defined in Section 23.2 hereof.

         Declaration of Sterling Default is defined in Section 23.1 hereof.

         Delivery, Shipment and Storage Instructions is defined in Section 5.1
hereof.

         Dispute Resolution Committee is defined in Section 21.1 hereof.

         Effective Date is the date of execution hereof by BP and Sterling.





                                      -3-
<PAGE>   55
         Estimated Delivery, Shipment and Storage Instructions is defined in
Section 5.1 hereof.

         Facility means any and all equipment of Sterling which is located at
the Plant and which is dedicated to the production of acrylonitrile, including
the equipment listed on Schedule A-1; provided, however, that the term Facility
shall not include any off-site utilities (e.g., nitrogen, fuel gas, plant air,
instrument air and electricity) or any equipment dedicated to loading dock
operations.

         Fixed Cost Component means, ***.

         Fixed Costs means any and all actual fixed costs incurred, sustained
or paid by Sterling in connection with the production, sale or delivery of
Products included within the categories listed on Schedule A-2; provided,
however, that ***.   For purposes of the definition of Fixed Costs, actual
fixed costs shall be calculated in substantially the same manner as that for
the fourth quarter of fiscal year 1997 attached hereto as Schedule A-2.

         Force Majeure means any acts of God, wars, blockades, insurrections,
riots, epidemics, landslides, lightning, earthquakes, fires, storms, floods,
high water, washouts, arrests, restraints of government and people, civil
disturbances, explosions, breakage or accidents to machines, equipment or lines
of pipe or property, freezing of wells, machines, lines of pipe or property,
partial or entire failure of any machinery, equipment or lines of pipe or other
property, the occurrence of any Spills or Releases and any regulatory, civil or
criminal action with respect thereto, strikes, work stoppages, labor
difficulties, other industrial disturbances, acts of public enemy,
transportation difficulties, sabotage, material shortages, difficulties in
obtaining materials through regular channels of supply, governmental controls
(including price and allocation controls), regulations or actions, embargoes
or, without limitation, any other causes or contingencies (whether or not of
the same nature as those hereinbefore specified) beyond the reasonable control
of the party claiming Force





                                      -4-
<PAGE>   56
Majeure, provided the party prevented from performing gives prompt notice to
the other party and takes all reasonable actions within its power to remove the
basis for nonperformance and after doing so resumes performance as soon as
possible.

         Indemnified Party is defined in Section 19.4 hereof.

         Indemnifying Party is defined in Section 19.4 hereof.

         Initial Term is defined in Section 2.1 hereof.

         Laws means all laws, statutes, rules, regulations, ordinances, orders,
writs, injunctions or decrees and other pronouncements having the effect of law
of any governmental authority.

         License Agreement means the License Agreement between BP and Sterling
dated as of April 15, 1988.

         Major Capital Project is defined in Section 13.2 hereof.

         Maximum Annual Contract Quantity means, ***.

         Maximum Monthly Contract Quantity means, ***.

         Maximum Quarterly Contract Quantity means, ***.

         Measuring Equipment means shore tanks or other appropriate equipment
for measuring deliveries to be loaded into or from barges or ships, scales for
measuring deliveries to be loaded into or from trucks or rail cars and meters
and other appropriate equipment for measuring deliveries into or from
pipelines.

         Minimum Annual Contract Quantity means, *** .

         Minimum Quarterly Contract Quantity means, ***.

         Minor Capital Projects is defined in Section 13.2 hereof.

         Minor Capital Projects Budget is defined in section 13.2 hereof.





                                      -5-
<PAGE>   57
         Month means the period beginning at 7:00 a.m. on the first day of a
calendar month and ending at 7:00 a.m. on the first day of the next succeeding
calendar month.

         Net Margin means ***.

         New Technology is defined in Section 1 of the License Agreement and
includes BP's improvements.

         Obligations is defined in Section 20.3 hereof.

         Original Agreement is defined in the recitals hereof.

         Other Raw Materials means *** .

         Person means any individual, firm, corporation, trust, association,
company, limited liability company, joint stock company, partnership, joint
venture, governmental authority or other entity or enterprise.

         Plant means the entire Texas City, Texas petrochemical plant owned by
Sterling.

         Point of Delivery is defined in Article 8 hereof.

         Prime Rate means the prime rate of interest announced from time to
time by The Chase Manhattan Bank, N.A. or any successor thereto.

         Product means acrylonitrile meeting the Specifications.

         Project means the pipe-up, instrumentation and completion of the Third
Reactor and alterations to the recovery and purification section to accommodate
the Third Reactor and the New Technology.

         Purchase Price means the purchase price payable by BP for Product as
provided in Article 7 hereof.





                                      -6-
<PAGE>   58
         Quarter means (i) during any Contract Year which is a calendar year,
the period beginning at 7:00 a.m. on the first day of the Months of January,
April, July and October and ending at 7:00 a.m. on the first day of the next
succeeding April, July, October and January, respectively and (ii) during any
Contract Year which is not a calendar year, the three (3) month period (or such
lesser period prior to reaching the commencement of a calendar year as shall be
applicable) commencing at 7:00 a.m. on the first day of such period and ending
at 7:00 a.m. on the morning of the first day of the next succeeding January,
April, July or October, as the case may be.

         Rated Capacity means ***.  The Rated Capacity, once so established,
shall remain in effect until further agreement of the parties or until proven
to be materially inaccurate.

         Raw Materials means propylene meeting the specifications set forth on
Exhibit B and ammonia meeting the specifications set forth on Exhibit C.

         Right means BP's exclusive right, during the term of this Agreement,
to purchase Product produced at the Facility in the amount of up to *** as
provided in Article 4 hereof.

         Shutdown Reserve means an account for the Facility and a corresponding
schedule for major shutdowns and update these on a regular basis.  The period
over which the Shutdown Reserve is accrued is agreed to be consistent with the
expected major shutdown schedule.  BP and Sterling will review and agree on the
Shutdown Reserve and corresponding major shutdown schedule by October 1 of each
year.

         Once agreed, the amount for "Shutdown Reserve" in the Fixed Costs
shall be revised so that the sum of the monthly charges in current dollars
during the interval between major shutdowns will equal the total.  If, during
the period prior to the major shutdown, additions or deletions of major
(non-routine) items to or from the reserve account may be mutually agreed upon.
After completion





                                      -7-
<PAGE>   59
of a major shutdown, total costs will be reconciled against the Shutdown
Reserve account.  Any difference will then be used to recalculate the next
Shutdown Reserve Account.

         Specifications means the acrylonitrile specifications, attached hereto
as Exhibit D, as the same may be changed from time to time by written agreement
between BP and Sterling.

         Spills or Releases means any emission, discharge, release or
threatened release of pollutants, contaminants, or hazardous substances or
toxic materials or wastes into or upon ambient air, surface water, ground water
or land, or subsurface strata, or, otherwise relating to the manufacture,
processing, distribution, use, treatment, storage, disposal, transport or
handling of pollutants, contaminants, or hazardous substances or toxic
materials or wastes, as any of the same relate to or affect or arise in
connection with the operation of the Facility, or the production, delivery,
storage, shipment, sale, resale or use, disposal or transportation of Product,
Co-Products, or feedstocks, raw materials, wastes or other materials used in or
resulting from the production of Product or Co-Products.

         Start-Up Date means November 26, 1989.

         Sterling is defined in the introductory paragraph.

         Sterling Event of Default means (i) the failure by Sterling to perform
any of its financial obligations hereunder or under the License Agreement which
failure shall continue for a period of ten days after notice from BP, (ii) the
failure of Sterling to perform any other covenants or agreements hereunder or
under the License Agreement to a material extent which failure continues for a
period of 30 days after receipt of written notice thereof by Sterling from BP
or (iii) the inaccuracy in any material respect of any representation or
warranty made by Sterling in this Agreement or the License Agreement; provided,
however, that (a) with respect to an event described





                                      -8-
<PAGE>   60
in (i) or (ii) above, if Sterling has performed any such obligation, covenant
or agreement or made any such payment prior to the expiration of such ten or 30
day period, as applicable, such failure or default shall not constitute a
Sterling Event of Default; and (b) a Sterling Event of Default shall not be
deemed to have occurred if Sterling is challenging in good faith in accordance
with Article 21 hereof a Declaration of Sterling Event of Default, unless such
Declaration of Sterling Event of Default is found by a court or arbitration to
be effective.

         Sterling Indemnified Persons is defined in Section 19.2 hereof.

         Sterling's Share is defined in Section 12.1 hereof.

         *** is defined in Section 3.4 hereof.

         Termination Notice is defined in Section 2.2 hereof.

         Third Party Action is defined in Section 19.3 hereof.

         Third Reactor means the reactor in place in the Facility that, prior
to April 15, 1988, was not connected by piping within the Facility and was
incomplete and which the parties acknowledge and agree has a useful life of ten
years from November 26, 1989.

         Unit of Measurement is defined in Section 10.1 hereof.

         Variable Cost Component means, ***.

         Variable Costs means any and all actual variable costs incurred,
sustained or paid by Sterling in connection with the production, sale or
delivery of Products or Co-Products hereunder included within the categories
listed on Schedule A-3; provided, however, that in no event shall the costs of
Raw Materials which are provided by BP pursuant to Section 7.5 hereof be deemed
to be Variable Costs hereunder.





                                      -9-
<PAGE>   61
                                   EXHIBIT B

                            PROPYLENE SPECIFICATIONS

<TABLE>
<CAPTION>
 PROPERTY                          SPECIFICATION                SHELL                     TEXAS CITY
 --------                          -------------                -----                     ----- ----
                                        MIN           MAX
                                        ---           ---
 <S>                                <C>           <C>           <C>                       <C>
 Propylene, Wt. %                   92                          92.0 MIN                  602.045
 Propane, Wt. %                     --            8             8.0 MAX                   602.045
 C4+, ppm Wt.                       --            1000                                    602.046
 C2H4, ppm Wt. (Ethylene)           --            200           100 MAX                   602.045
 Butylenes, ppm. Wt.                --            125           125 MAX                   602.046
 Methylacetylene, ppm. Wt.          --            100                                     602.045
 Propadiene, ppm Wt.                --            100                                     602.045
 Acetylene, ppm Wt.                 --            100                                     602.045
 Sulfur, ppm Wt.                    --            10            3 MAX                     602.027
 Water, ppm Wt.                     --            60            60 MAX                    No Method
 H2, O2, N2, CO, CO2                --            100           100 MAX                   602.036
 Total, ppm, Wt.
 Methanol, ppm Wt.                  --            100                                     No Method
 DMF, ppm Wt.                       --            0.3                                     No Method
 Amines, as MEA, ppm Wt.            --            5                                       No Method
 Ethane & Lighter H.C., Wt. %                                   0.4 MAX
 Butane & Heavier H.C., ppm Wt.                                 1000 MAX
 Butadiene, ppm Wt.                                             20 MAX
</TABLE>





<PAGE>   62
                                   EXHIBIT C

                             AMMONIA SPECIFICATIONS

<TABLE>
<CAPTION>
                                                                                  TEXAS CITY
                    PROPERTY                           SPECIFICATION              METHOD NO.
                    --------                           -------------              ------ ---
                                                       MIN          MAX
                                                       ---          ---
                    <S>                                <C>          <C>           <C>
                    Ammonia, Wt. %                     99.5         --            602.247
                    Water, Wt. %                       0.2          0.5           602.246
                    Oil, ppm Wt.                       --           10            TOC
</TABLE>





<PAGE>   63
                                   EXHIBIT D

                          ACRYLONITRILE SPECIFICATIONS

<TABLE>
<CAPTION>
                                                                                  TEXAS CITY
                    PROPERTY                           SPECIFICATION              METHOD NO.
                    --------                           -------------              ----------
                    <S>                                <C>                        <C>





                                     ***
</TABLE>




<PAGE>   64

                               SCHEDULE 3.5(e)(i)
                             STERLING ACTUAL COSTS

                                      ***





<PAGE>   65
                                 SCHEDULE 15.2
                                   INSURANCE

                                      ***





<PAGE>   66
                                  SCHEDULE A-1
                                    Facility

                                      ***





<PAGE>   67
                                  SCHEDULE A-2
                             EXAMPLE OF FIXED COSTS

                                      ***





<PAGE>   68
                                  SCHEDULE A-3
                           EXAMPLE OF VARIABLE COSTS


                                      ***





<PAGE>   69
                                  SCHEDULE A-4
                      BP NET UNRECOUPED INVESTMENT AMOUNT

                                      ***






<PAGE>   1
                                                                    EXHIBIT 10.3

                                                    *** OMITTED INFORMATION
                                                    DENOTED BY ASTERISKS (***)
                                                    HAS BEEN SEPARATELY FILED
                                                    WITH THE COMMISSION AND
                                                    IS SUBJECT TO A CONFIDENTIAL
                                                    TREATMENT REQUEST***

================================================================================




                          SECOND AMENDED AND RESTATED

                              PRODUCTION AGREEMENT



                                    between



                               BP CHEMICALS INC.



                                      and



                            STERLING CHEMICALS, INC.



                                effective as of
                                 August 1, 1996
================================================================================




                                      -1-
<PAGE>   2
                          SECOND AMENDED AND RESTATED
                              PRODUCTION AGREEMENT

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                       PAGE
<S>                                                                                                                    <C>
ARTICLE 1
         DEFINITIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

ARTICLE 2
         INITIAL AND ADDITIONAL TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14

ARTICLE 3
         SUPPLY OF ACETIC ACID  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16

ARTICLE 4
         DELIVERY, SHIPMENT AND STORAGE INSTRUCTIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17

ARTICLE 5
         CHANGES IN SPECIFICATIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

ARTICLE 6
         PAYMENT FOR ACETIC ACID  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20

ARTICLE 7
         PRODUCT OWNERSHIP, DELIVERIES AND SHIPMENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25

ARTICLE 8
         TESTING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

ARTICLE 9
         MEASUREMENT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29

ARTICLE 10
         STORAGE OF ACETIC ACID BY COMPANY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31

ARTICLE 11
         OPERATION OF UNIT AND RELATED MATTERS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32

ARTICLE 12
         SHUT-DOWNS OF THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33

ARTICLE 13
         INSURANCE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
</TABLE>





                                      -i-
<PAGE>   3
<TABLE>
<S>                                                                                                                    <C>
ARTICLE 14
         ACCESS TO THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37

ARTICLE 15
         METHANOL SUPPLY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  38

ARTICLE 16
         SPECIAL EXPENDITURE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40

ARTICLE 17
         CAPITAL EXPENDITURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41

ARTICLE 18
         PERSONNEL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

ARTICLE 19
         REPRESENTATIONS AND WARRANTIES OF THE COMPANY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

ARTICLE 20
         REPRESENTATIONS AND WARRANTIES OF BP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46

ARTICLE 21
         PARTICIPATION IN NEGOTIATIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

ARTICLE 22
         ACCESS TO INFORMATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48

ARTICLE 23
         SEMIANNUAL MEETINGS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50

ARTICLE 24
         FINANCIAL ASSURANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51

ARTICLE 25
         ARBITRATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51

ARTICLE 26
         CONFIDENTIALITY AND INTELLECTUAL PROPERTY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52

ARTICLE 27
         DEFAULTS; FAILURES; REMEDIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  53

ARTICLE 28
         NOTICE OF CERTAIN EVENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
</TABLE>





                                      -ii-
<PAGE>   4
<TABLE>
<S>                                                                                                                    <C>
ARTICLE 29
         SURVIVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56

ARTICLE 30
         INDEMNIFICATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  57

ARTICLE 31
         ADDITIONAL RIGHTS AND LIABILITIES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60

ARTICLE 32
         FORCE MAJEURE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61

ARTICLE 33
         ASSIGNMENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63

ARTICLE 34
         GENERAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
</TABLE>





                                     -iii-
<PAGE>   5
                          SECOND AMENDED AND RESTATED
                              PRODUCTION AGREEMENT

                                    EXHIBITS

<TABLE>
         <S>                                                                 <C>
         Cost of Sales                                                       A

         Fixed Costs                                                         B

         Methanol Specification                                              C

         Acetic Acid Specifications                                          D

         Legal Description of the Land of the Unit                           E

         Variable Costs                                                      F

         Summary of Insurance Coverage                                       G

         Sample Profit Calculations After 2006                               H

         Blend Gas Credit                                                    I
</TABLE>





                                      -iv-
<PAGE>   6
                          SECOND AMENDED AND RESTATED
                              PRODUCTION AGREEMENT


THE STATE OF TEXAS                )
                                  )    KNOW ALL MEN BY THESE PRESENTS:
COUNTY OF HARRIS                  )


         THIS SECOND AMENDED AND RESTATED PRODUCTION AGREEMENT executed this
___ day of ____________, 1997, but effective as of August 1, 1996, is by and
between BP CHEMICALS INC., an Ohio corporation and successor in interest to BP
Chemicals Americas Inc., and STERLING CHEMICALS, INC., a Delaware corporation.

                             W I T N E S S E T H :

         WHEREAS, the Company (as defined below) acquired on August 1, 1986 a
petrochemical plant located in Texas City, Texas which contains facilities for
the production of acetic acid; and

         WHEREAS, effective August 1, 1986 the Company executed and delivered
to BP (as defined below) a special warranty deed with vendor's lien whereby the
Company conveyed to BP fee simple determinable title in and to the Unit, which
fee interest ceased, determined and reverted to the Company on August 1, 1996;
and

         WHEREAS, on August 1, 1986 BP leased the Unit to the Company for the
production  of acetic acid pursuant to a Lease and Production Agreement dated
August 1, 1986 ("1986 Agreement") provided that the Company agreed to give BP,
during an Initial Term of ten (10) years commencing on August 1, 1986, the
exclusive right to purchase all acetic acid produced by the Company in the
Unit, except as otherwise permitted by the 1986 Agreement; and





                                      -1-
<PAGE>   7
         WHEREAS, on August 1, 1986 pursuant to the 1986 Agreement the Company
gave BP an option to extend such Initial Term for up to two further periods
(not exceeding in the aggregate a period of ten [10] years) during which BP was
granted the exclusive right to acquire all acetic acid produced by the Company
in the Unit in consideration of the payment of an extension fee; and

         WHEREAS, the 1986 Agreement has heretofore been amended on October 9,
1986, November 17, 1988, December 12, 1988, December 13, 1988, and September 8,
1993; and

         WHEREAS, on August 8, 1994, the parties hereto (a) restated the 1986
Agreement to reflect all prior amendments, and (b) amended the 1986 Agreement
to make provision for the terms and conditions under which, in lieu of BP
exercising its right to extend the Initial Term for up to two further periods
not exceeding in the aggregate a period of ten (10) years, (i) the production
agreement portion of the 1986 Agreement was extended through July 31, 2016,
composed of two ten (10) year terms and (ii)  BP was granted the exclusive
right to acquire acetic acid during the period from August 1, 1996 through July
31, 2016 ("1994 Restated Agreement"); and

         WHEREAS, the Initial Term expired and title to the Unit reverted to
the Company on August 1, 1996; and

         WHEREAS; the parties hereto wish to restate the 1994 Restated
Agreement again, and also to further amend the 1994 Restated Agreement to among
other things:  (a) ***. (b) modify the 1994 Restated Agreement to reflect
changes in the operation of the Unit resulting from (i) completion by Praxair of
the Praxair Facility, (ii) completion of the Methanol Facility and (iii) the
completion of DB III; and (c) reflect the expiration of the Initial Term;

         NOW, THEREFORE, for and in consideration of the premises and of the
mutual representations, warranties, covenants and agreements herein contained
and the mutual benefits to





                                      -2-
<PAGE>   8
be derived therefrom, the parties hereto agree that the 1994 Restated
Agreement, be and hereby is further amended as provided herein, such amendments
to be effective as of the Amendment Effective Date (except as otherwise
provided herein), and that the 1994 Restated Agreement be and hereby is amended
and restated in its entirety as follows:

                                   ARTICLE 1

                                  DEFINITIONS

         Unless otherwise stated in this Agreement, the following terms shall
have the meanings ascribed to them below, and the following definitions shall
be equally applicable to both the singular and plural forms of any of the terms
herein defined:

         Acetic Acid:  Acetic acid produced in the Unit and meeting the
Specifications in effect from time to time pursuant to this Agreement.

         Acetic Acid Measuring Equipment:  Shore tanks located on the Unit for
measuring deliveries of Acetic Acid to be loaded into barges or ships, and
scales located at the Plant for measuring deliveries of Acetic Acid to be
loaded into trucks and rail cars.

         Acetic Acid Plant Assets:  As defined in Section 17.8(a) hereof.

         Acetic Acid Technology Agreement:  That certain Acetic Acid Technology
Agreement dated as of the date hereof but effective as of August 1, 1986 among
BPCL, BP and the Company.

         Additional Rail Cars:  As defined in Section 7.2 hereof.

         Affiliate:  Affiliate of a party shall mean a corporation, at least
50% of the voting securities of which is owned directly or indirectly by such
party; a corporation which owns directly or indirectly at least 50% of the
voting stock of such party; a corporation, at least 50% of the voting
securities of which is owned directly by a corporation which owns directly or
indirectly at least 50%





                                      -3-
<PAGE>   9
of the voting stock of such party; or any other entity controlled, controlled
by or under common control with such party.

         After Acquired Assets:  As defined in Section 2.1(b) hereof.

         Agreement:  This Second Amended and Restated Production Agreement, as
the same may be further amended from time to time pursuant to the provisions
hereof.

         1986 Agreement and 1994 Restated Agreement:  As defined in the
recitals hereof.

         Amendment Effective Date:  August 1, 1996.

         Arbitration Notice:  As defined in Section 25.1 hereof.

         Barge:  That certain barge, identified as M-25, Official No. 527030,
for so long as such barge remains in service during the Initial Term and the
First and Second Additional Terms.

         Blend Gas:  A mixed carbon monoxide/hydrogen stream plus a pure
hydrogen stream.

         Blend Gas Credit:  A credit calculated in the manner set forth in
Exhibit I attached hereto.

         BP:  BP Chemicals Inc., an Ohio corporation, and its successors and
permitted assigns hereunder.

         BPCL:  BP Chemicals Ltd., a company registered in England and Wales
and an Affiliate of BP, and its successors and assigns.

         BP Event of Default:  During the Initial Term and the First and Second
Additional Terms hereof, (i) the failure by BP to perform any of its financial
obligations hereunder which failure shall continue for a period of thirty (30)
days after the same is due hereunder, (ii) the failure by BP to perform any
other covenants or agreements hereunder to a material extent which failure
continues for a period of thirty (30) days after receipt of written notice
thereof by BP from the Company, (iii) the inaccuracy in any material respect of
any representation or warranty made by BP in this Agreement, (iv) the failure
by either of BP or BPCL to perform any of its financial obligations or





                                      -4-
<PAGE>   10
any other covenants or agreements under the Acetic Acid Technology Agreement to
a material extent which failure continues for a period of thirty (30) days
after receipt of written notice by BP from the Company, and/or (v) if BP shall
(a) make a general assignment for the benefit of creditors or shall petition or
apply to any tribunal for the appointment of a trustee, custodian or receiver
of all or any substantial part of its business, estate or assets or shall
commence any proceeding under any bankruptcy, reorganization, arrangement,
insolvency or readjustment of debt law of any jurisdiction; or any such
petition or application shall be filed or any such proceedings shall be
commenced against BP and BP shall indicate approval thereof, consent thereto or
acquiescence therein, or an order shall be entered appointing a trustee,
custodian or receiver of all or any substantial part of the business, estate or
assets of BP or approving the petition or application in any such proceeding,
and such order shall remain in effect for more than ninety (90) days, and (b)
as a result thereof, any such trustee, custodian or receiver shall take any
action having any of the effects set forth in subsections (i), (ii)  and/or
(iv) above; provided, however, that with respect to an event described in (i),
(ii) or (iv) above, if BP (or in the case of (iv) above, and/or BPCL) or any
such trustee, custodian or receiver has performed any such obligation, covenant
or agreement or made any such payment prior to the expiration of such thirty
(30) day period, such failure or default shall not constitute a BP Event of
Default.

         Business Day:  A day in the City of Houston, Harris County, Texas,
that is neither a Saturday, Sunday or legal holiday nor a day on which banking
institutions in Houston, Texas or New York, New York are obligated by law to
close.

         Capital Expenditures:  Expenditures incurred to (a) acquire any asset
for use on the Unit, or (b) add to, modify, replace or improve any asset on the
Unit so that (i) the cost of operations on the Unit is reduced, (ii) the
capacity of the Unit is increased, (iii) the efficiency of the Unit is
improved,





                                      -5-
<PAGE>   11
(iv) operational safety of the Unit is improved, or compliance with legal
requirements is achieved or maintained, and/or (v) the product quality or
reliability of the Unit is improved.  Also, any expenditures incurred in
replacing or improving the Barge or the Rail Cars or in purchasing the
Additional Rail Cars.

         Capital Project:  A project which requires Capital Expenditures.

         Claim:  As defined in Section 30.3 hereof.

         Company:  Sterling Chemicals, Inc., a Delaware corporation, and its
successors and permitted assigns hereunder.

         Company Event of Default:  During the Initial Term and the First and
Second Additional Terms hereof, (i) the failure by the Company to perform any
of its obligations, covenants or agreements hereunder to a material extent
which failure continues for a period of thirty (30) days after receipt of
written notice thereof by the Company from BP, (ii) the inaccuracy in any
material respect of any representation or warranty made by the Company in this
Agreement, (iii) the failure by the Company to deliver to BP the quantity of
Acetic Acid as required by the Delivery, Shipment and Storage Instructions for
two (2) consecutive Months unless such failure to deliver is otherwise excused
hereunder, and/or (iv) if the Company shall (a) make a general assignment for
the benefit of creditors or shall petition or apply to any tribunal for the
appointment of a trustee, custodian or receiver of all or any substantial part
of its business, estate or assets or shall commence any proceeding under any
bankruptcy, reorganization, arrangement, insolvency or readjustment of debt law
of any jurisdiction; or any such petition or application shall be filed or any
such proceedings shall be commenced against the Company and the Company shall
indicate approval thereof, consent thereto or acquiescence therein, or an order
shall be entered appointing a trustee, custodian or receiver of all or any
substantial part of the business, estate or assets of the Company or approving





                                      -6-
<PAGE>   12
the petition or application in any such proceeding, and such order shall remain
in effect for more than ninety (90) days, and (b) as a result thereof, any such
trustee, custodian or receiver shall take any action having any of the effects
set forth in subsections (i) and/or (iii) above; provided however, with respect
to an event described in (i) above, if the Company or any such trustee,
custodian or receiver has performed any such obligation, covenant or agreement
prior to the expiration of such thirty (30) day period, such failure to perform
shall not constitute a Company Event of Default.

         Company Taxes:  Subject to the provisions of Section 34.2(b), all
taxes, if any, (other than capital stock, income or excess profit taxes,
general franchise taxes imposed on corporations on account of their corporate
existence or on their right to do business within the state as a foreign
corporation, ad valorem and real property taxes and similar taxes) licenses,
fees or charges levied, assessed or made by any governmental authority on the
act, right or privilege of production, transportation, handling, sale, resale
or delivery of Acetic Acid produced, sold or delivered under this Agreement
which (i) are measured by the volume in pounds, value or sales price of, or are
otherwise based on producing, transporting, purchasing, handling, selling or
reselling, Acetic Acid and (ii) are imposed upon and paid by or for the account
of the Company.

         Contract Year:  A period of twelve (12) consecutive months beginning
on the first Day of January next following the Effective Date, and beginning on
the first Day of January of each subsequent year during the Initial Term and,
if applicable, the First and Second Additional Terms. The period of time from
the Effective Date until the first day of the January next following the
Effective Date, and the period of time from the first day of January last
occurring during the Initial Term or, if applicable, the First and Second
Additional Terms, shall each be considered to be a Contract Year.





                                      -7-
<PAGE>   13
         Cost of Sales:  The reasonable direct out-of-pocket expenses incurred
by BP in connection with the sale of Acetic Acid or Unit Product including, but
not limited to, the expenses listed in Exhibit A attached hereto and reasonable
allocations of BP's direct marketing support costs.

         DB III:  A debottlenecking project for the purpose of increasing
Acetic Acid production capacity to 770,000,000 pounds per year.

         Damages:  Any and all damages, cash payments, expenses, obligations,
claims, liabilities, fines, penalties, clean-up or remedial costs, shut-down
costs, repairs or reconstruction costs, costs of investigation, attorneys'
fees, court costs, and operating, extraordinary or business interruption losses
including (i) except as otherwise provided herein, any such matters arising
from Spills or Releases Requiring Response Action, and (ii) unless otherwise
specifically disclaimed herein, consequential, incidental and indirect damages,
but excluding any and all of the foregoing arising from or related to the
acetic acid process or acetic acid technology licensed by BPCL to the Company.

         Day:  The 24-hour period commencing at 7:00 a.m. Houston, Texas time
on one calendar day and ending at 7:00 a.m. Houston, Texas time on the
following calendar day. The date of a Day shall be that of its beginning.

         Declaration of BP Default:  As defined in Section 27.2 hereof.

         Declaration of Company Default:  As provided in Section 27.1 hereof.

         Delivery, Shipment and Storage Instructions:  As defined in Section
4.1 hereof.

         Effective Date:  The Purchase Closing Date.

         Estimated Delivery, Shipment and Storage Instructions:  As defined in
Section 4.1 hereof.

         First Additional Term:  As defined in Section 2.1(a) hereof.

         First Extension Fee:  As defined in Section 2.1(c) hereof.





                                      -8-
<PAGE>   14
         Fixed Costs:  All actual fixed costs incurred, sustained or paid in
connection with the production, sale or delivery  of Acetic Acid, Unit Product
and syn-gas, including but not limited to the items listed in Exhibit B;
provided that fixed costs invoiced to Sterling by Praxair as a result of the
monthly production of carbon monoxide will be considered Fixed Costs under this
Agreement and will be included therein.

         Initial Term:  As defined in Section 2.1(a) hereof.

         Major Capital Item:  As defined in Section 6.6(c) hereof.

         Methanol:  Methanol meeting the specification set forth on Exhibit C
attached hereto.

         Methanol Facility:  That certain facility owned by the Company and
located at the Plant that, through a combination of new construction and
increases in capacity, has been reconstructed by the Company and BP pursuant to
the Methanol Production Agreement and from which BP will purchase methanol for
delivery to the Company pursuant to this Agreement.

         Methanol Measuring Equipment:  For Methanol delivered by barge, shore
tanks located at the Plant for measuring deliveries of Methanol.  For Methanol
delivered from the Methanol Facility, the meter that measures the flow of
Methanol into the Unit.

         Methanol Production Agreement:  That certain Methanol Production
Agreement dated September 26, 1996 by and between the Company and BP, as same
may be amended from time to time pursuant to the terms thereof.

         Minor Capital Item:  As defined in Section 6.6(c) hereof.

         Monsanto:  Monsanto Company, a Delaware corporation.

         Month:  The period beginning at 7:00 a.m. on the first day of a
calendar month and ending at 7:00 a.m. on the first day of the next succeeding
calendar month.





                                      -9-
<PAGE>   15
         Note:  That certain Promissory Note dated August 1, 1986 in the
original principal amount ***, executed by BP, as maker, payable to the order
of the Company, as payee, and bearing interest as provided therein,
constituting the purchase price of the Unit.

         Plant:  The petrochemical plant located in Texas City, Texas, acquired
by the Company from Monsanto pursuant to the Purchase Agreement.

         Point of Delivery:  As defined in Section 7.1 hereof.

         Praxair:  Praxair Hydrogen Supply, Inc., a Delaware corporation, and
its successors and assigns.

         Praxair Facility:  That certain facility for the production of carbon
monoxide, blend gas, hydrogen and steam owned by Praxair and located within the
Plant on a site leased by the Company to Praxair, from which the Company has
contracted to purchase its requirements of carbon monoxide, hydrogen and blend
gas for the Unit and for the Company's oxo-alcohol unit.

         Praxair Product Supply Agreement:  That certain Product Supply
Agreement dated as of May 15, 1995 by and between the Company and Praxair, as
same may be amended from time to time pursuant to the terms thereof.

         Profit:  ***.




                                      -10-
<PAGE>   16

         Purchase Agreement:  The Asset Purchase Agreement dated August 1, 1986
between Monsanto and the Company.

         Purchase Closing Date:  The date the closing occurred under the
Purchase Agreement.

         Quarter:  During any Contract Year which is a calendar year, the
period beginning at 7:00 a.m. on the first day of the Months of January, April,
July and October and ending at 7:00 a.m. on the first day of the next
succeeding April, July, October and January, respectively. During any





                                      -11-
<PAGE>   17
Contract Year which is not a calendar year, Quarter shall mean a three (3)
month period (or such lesser period prior to reaching the commencement of a
calendar year as shall be applicable) commencing at 7:00 a.m. on the first day
of such period and ending at 7:00 a.m. on the morning of the first day of the
next succeeding January, April, July or October, as the case may be.

         Rail Cars:  Those certain sixty (60) railroad tank cars made available
by the Company to BP pursuant to Section 7.2 hereof for so long as such cars
remain in service during the Initial Term and the First and Second Additional
Terms.

         Right:  The exclusive right of BP to acquire all Acetic Acid or Unit
Product produced by the Company in the Unit.

         Scheduled Shutdown:  A period during which the Unit is shut down for
the purpose of a Capital Project or to install equipment acquired by a Special
Expenditure or such maintenance as has been agreed by the parties hereto in a
Semiannual Meeting.

         Second Additional Term:  As defined in Section 2.1(a) hereof.

         Semiannual Meetings:  The meetings of representatives of the Company
and BP to be held no later than four (4) weeks after the end of each March and
September in each Contract Year.

         Special Expenditure:  Any expenditure incurred to acquire and install
any significant item of equipment for use on the Unit not otherwise defined as
Capital Expenditure or reimbursed by BP to the Company as a Fixed Cost.

         Specifications:  The acetic acid specifications, attached hereto as
Exhibit D, as the same may be changed from time to time by written agreement
between BP and the Company.

         Spills or Releases Requiring Response Action:  Any emission,
discharge, release or threatened release of pollutants, contaminants, or
hazardous substances or toxic materials or wastes into or upon ambient air,
surface water, ground water or land, or subsurface strata or otherwise





                                      -12-
<PAGE>   18
relating to the manufacture, processing, distribution, use, treatment, storage,
disposal, transport or handling of pollutants, contaminants, or hazardous
substances or toxic materials or wastes, as any of the same relate to or affect
or arise in connection with the operation of the Unit, the Barges, the Rail
Cars or Additional Rail Cars, or the production, delivery, storage, shipment,
sale, resale or use, disposal or transportation of Acetic Acid, Unit Product,
or feedstocks, raw materials, wastes or other materials used in or resulting
from the production of Acetic Acid or Unit Product.

         Surplus Payment:  As defined in Section 6.6(b) hereof.

         Third Party Action:  As defined in Section 30.3 hereof.

         Unit:  Those certain tracts of real property situated in Texas City,
Galveston County, Texas, as more particularly described on Exhibit E  attached
hereto and made a part hereof by reference for all purposes as if copied herein
in full, together with all buildings, improvements and fixtures located and to
be located thereon, generally known or referred to as the Plant's acetic acid
complex, including, but not limited to the syn-gas unit, the acetic acid plant,
buildings, storage tanks and all replacements, substitutions, deletions,
additions or other changes thereto from time to time as permitted by this
Agreement; provided, that from and after the shutdown of the syn-gas unit in
connection with the Startup (as that term is defined in the Praxair Product
Supply Agreement) of the Praxair Facility, those items of the syn-gas unit to
be used as part of the Methanol Facility shall cease to be a part of the Unit
for all purposes.

         Unit Capacity:  As defined in Section 6.6(b) hereof.

         Unit of Measurement:  As defined in Section 9.1 hereof.

         Unit Product:  Any acetic acid produced in the Unit which does not
meet the Specifications in effect from time to time pursuant to this Agreement.





                                      -13-
<PAGE>   19
         Variable Costs:  The actual variable costs incurred in the production
of acetic acid including but not limited to the items listed on Exhibit F and
the variable costs invoiced to the Company by Praxair but excluding the
variable costs associated with the syn-gas unit.

                                   ARTICLE 2

                          INITIAL AND ADDITIONAL TERMS

         2.1   (a) The term of this Agreement, during which time BP shall have
the Right shall be for a period of thirty (30) years commencing on August 1,
1986 and continuing through July 31, 2016, unless earlier terminated as
provided herein.  The first ten (10) year period, commencing on August 1, 1986
and continuing through July 31, 1996, is herein referred to as the "Initial
Term".  The second ten (10) year period, commencing on August 1, 1996 and
continuing through July 31, 2006, is herein referred to as the "First
Additional Term".  The third ten (10) year period, commencing on August 1, 2006
and continuing through July 31, 2016, is herein referred to as the "Second
Additional Term".

         (b)     On July 31, 1996, the lease provisions of the 1994 Restated
Agreement terminated and on August 1, 1996 title to the Unit reverted to the
Company and the Unit, as constituted on August 1, 1986 and including all
improvements thereto made by the Company and unreimbursed by BP subsequent to
August 1, 1986, became the sole property of the Company.  BP agrees to execute
and deliver to the Company such instruments, in recordable form, as the Company
may reasonably request to confirm the reversion of record title to the Unit and
all personal property used as part of the Unit to the Company.  BP agrees that
it has no ownership interest in the Unit or any improvements to the Unit made
since August 1, 1986, other than that portion of any Capital Expenditure,
Capital Project or Special Expenditure paid for either directly or through
reimbursement by BP (the "After Acquired Assets").





                                      -14-
<PAGE>   20
         (c)     As consideration for the grant by the Company to BP of the
Right for the First Additional Term, BP shall pay to the Company an aggregate
amount (the "First Extension Fee") equal to 120 (the number of Months in the
First Additional Term) multiplied by the monthly payment set forth below.  The
First Extension Fee shall be payable in equal consecutive monthly installments
of *** each, in immediately available funds by wire transfer to the Company's
account at such account or place of payment as may be designated by the Company
in writing to BP. The first monthly installment shall be due and payable on the
first Business Day of the second Month of the First Additional Term (September
3, 1996) and each of the remaining monthly payments shall be due and payable on
the first Business Day of each Month thereafter, with the last payment due on
August 1, 2006.  As consideration for the grant by the Company to BP of the
Right for the Second Additional Term, BP shall not be required to pay to the
Company any extension fee, but the share of Profit payable to the Company shall
be increased in accordance with Section 6.6(b), and paid in accordance with
Section 6.6(c), of this Agreement.

         2.2   In the event of  any breach or failure to perform hereunder
during the First or Second Additional Term by BP or the Company, which breach
or failure continues for a period of thirty (30) Days after written notice
thereof, the other party hereto shall be entitled to pursue all rights and
remedies provided at law or in equity for such breach or failure including, but
not limited to, terminating this Agreement and seeking and recovering Damages
therefor or the remedy of specific performance of this Agreement whether or not
such remedy is otherwise normally available.  Unless earlier terminated in
accordance with the provisions hereof, or unless the parties agree to another
extension hereof prior to January 1, 2016, this Agreement will terminate on
July 31, 2016.  Upon termination of this Agreement, BP agrees to sell to the
Company and the Company agrees to purchase from BP, all of BP's right, title
and interest in and to the After Acquired Assets ***





                                      -15-
<PAGE>   21
BP agrees to execute and deliver to the Company such instruments, in recordable
form, as the Company shall reasonably require at the termination of this
Agreement to transfer record title to the After Acquired Assets to the Company.
In the event that a project or projects similar in scope and effect to DB III
are agreed and implemented by the parties during the First or Second Additional
Term, it is the intent of the parties to negotiate an extension of the Agreement
over the estimated useful life of such project or projects.

         2.3   Upon the termination of this Agreement, BP will own the Acetic
Acid and Unit Product in inventory at the Unit and will pay to the Company
within thirty (30) days the Company's share of the Profit on such inventory,
calculated using a sales price equal to the average price of all sales by BP
during the month following such termination.

                                   ARTICLE 3

                             SUPPLY OF ACETIC ACID

         3.1   On the terms and subject to the conditions of this Agreement,
commencing on August 1, 1986 BP hereby agrees to receive and pay for and the
Company agrees to produce and deliver to BP Acetic Acid in such amounts as
requested by BP in the manner provided herein subject at all times to the
limitations imposed in Section 3.4 hereof.





                                      -16-
<PAGE>   22
         3.2   BP and the Company agree that Acetic Acid delivered to the
applicable Point of Delivery hereunder shall be made available to BP under as
uniform conditions and rates as possible. Accordingly, BP shall take deliveries
of, and the Company shall deliver, Acetic Acid in a manner commensurate with
good operating practices and in accordance with proper maintenance, operating
and distribution procedures and at as uniform rates of delivery as possible
throughout each Quarter during the Initial Term and the First and Second
Additional Terms.

         3.3   BP and the Company each agree to give the other reasonable
notice of such party's desire at any time materially to increase or decrease
the quantity of Acetic Acid deliverable at any particular time hereunder. If
either party fails to meet the requirements of the Delivery, Shipment and
Storage Instructions, such party shall notify the other party of the reasons
for such failure and the estimated time such failure may continue.

         3.4   The Company shall not be required to expand, upgrade or, except
as otherwise expressly required herein, rebuild the Unit or any other Plant
facilities or to purchase acetic acid from other sources in order to perform
its obligations to BP pursuant to the provisions of this Agreement.

                                   ARTICLE 4

                  DELIVERY, SHIPMENT AND STORAGE INSTRUCTIONS

         4.1   On or before fourteen (14) Days prior to the end of each Quarter
during each Contract Year, BP shall provide notice to the Company (orally, in
writing or in other mutually agreeable form) setting forth BP's estimated
delivery, shipment and storage instructions of Acetic Acid for the coming
Quarter (the "Estimated Delivery, Shipment and Storage Instructions") which
shall include estimated dates, quality requirements and volumes of deliveries,
shipments and storage requirements of Acetic Acid for such Quarter. At least
five (5) Business Days prior to the first Day of each Month,





                                      -17-
<PAGE>   23
BP shall provide notice in similar form to the Company setting forth BP's
requested dates, quality requirements and volumes of deliveries and shipping
and its storage requirements of Acetic Acid for the coming Month (the
"Delivery, Shipment and Storage Instructions").

         4.2   In addition to the Estimated Delivery, Shipment and Storage
Instructions and the Delivery, Shipment and Storage Instructions, BP may
deliver to the Company from time to time additional shipping instructions for
the Acetic Acid.  All such instructions with respect to any particular shipment
shall be given as early as is practicable prior to the requested shipment date.
The Company shall use its best efforts to deliver Acetic Acid at the times
specified in such instructions. 

         To the extent required hereunder, the Company shall comply with the
requirements of governmental authorities having jurisdiction now in force or
which may hereafter be in force pertaining to the operation of the Unit and the
production of Acetic Acid or Unit Product and shall faithfully observe in the
use and operation of the Unit applicable laws and regulations now in force or
which may hereafter be in force.

                                   ARTICLE 5

                           CHANGES IN SPECIFICATIONS

         5.1   The Company shall produce Acetic Acid in accordance with
established procedures and methods of manufacture.

         5.2   Prior to making any change in raw materials or in procedures and
methods of manufacture employed in producing Acetic Acid hereunder which the
Company has, or should have, reason to believe may make such Acetic Acid
unsuitable to any of BP's customers, the Company will notify BP of the
Company's intent to make any such change.  If the Company fails to notify BP of
the Company's intent to make any such change, or if the Company notifies BP of
the Company's intent to make any such change and BP does not consent to such
change, and the Company thereafter





                                      -18-
<PAGE>   24
makes such change, the Company shall indemnify and hold BP harmless pursuant to
the provisions of Article 30 hereof from Damages which BP may suffer or incur
by reason of such change.  If the Company notifies BP of the Company's intent
to make any such change and BP consents to such change, BP shall indemnify and
hold the Company harmless pursuant to the provisions of Article 30 hereof from
Damages which the Company may suffer or incur by reason of such change.

         5.3   If at any time, any Acetic Acid to be supplied to BP changes in
chemical composition from that previously supplied to BP by the Company
hereunder, or the procedures and methods of manufacture employed in producing
Acetic Acid hereunder change so that in either event, such Acetic Acid is
unsuitable to any of BP's customers, then (i) BP shall notify the Company of
such unsuitability and may thereafter refuse to accept shipments of Acetic Acid
hereunder, and (ii) the Company shall indemnify and hold BP harmless pursuant
to the provisions of Article 30 hereof from Damages which BP may suffer or
incur by reason of any such change or changes.  If, notwithstanding the
unsuitability of Acetic Acid to BP's customer, BP accepts such shipment of
Acetic Acid, then (i) BP shall notify the Company of such acceptance
notwithstanding such unsuitability, and (ii) BP shall indemnify and hold the
Company harmless pursuant to the provisions of Article 30 hereof from Damages
which the Company may suffer or incur by reason of such unsuitable Acetic Acid.

         5.4   If the product produced by the Company in the Unit fails to meet
the Specifications, in whole or in part, and is delivered to BP as if it were
Acetic Acid and BP is not notified of such failure in advance, the Company
shall indemnify and hold BP harmless pursuant to the provisions of Article 30
hereof from Damages which BP may suffer or incur by reason of any such failure.
If the Company notifies BP of such failure in advance, but BP accepts the Unit
Product notwithstanding such failure, BP shall indemnify and hold the Company
harmless pursuant to the





                                      -19-
<PAGE>   25
provisions of Article 30 hereof from Damages which the Company may suffer or
incur by reason of such failure.

         5.5   The Specifications shall not be changed unless agreed to in
advance in writing by BP and the Company.

                                   ARTICLE 6

                            PAYMENT FOR ACETIC ACID

         6.1   Effective as of October 1, 1995, the charge for all Acetic Acid
delivered to BP hereunder during each Month of each Contract Year shall be the
sum of the following:

                 (a)      ***.

                 (b)      ***.

                 (c)      ***.

         6.2   BP shall pay the charge therefor to the Company after receipt of
invoice therefor in the following manner:

                 (a)      ***.

                 (b)      ***.

                 (c)      ***.

         6.3   The Company shall, on or before the fifth Business Day of each
Month, render to BP





                                      -20-
<PAGE>   26
                 (a)     an invoice for the preceding Month showing the 
         quantity of Acetic Acid delivered; beginning and ending Acetic Acid
         inventories, the production quantities of hydrogen, carbon monoxide,
         blend gas; the carbon monoxide usage in Acetic Acid; the value of
         Acetic Acid (including the value of the Methanol contained therein)
         shipped to the Company's acrylonitrile unit; the current price of
         methanol, carbon dioxide and natural gas; and the amount of the
         Variable Costs due; and BP shall pay each such invoice on or before the
         tenth Day after receipt thereof (or if such Day is not a Business
         Day, on the Business Day next following); and

                 (b)      a credit memorandum for the preceding Month showing
         the calculation of the Blend Gas Credit in the manner provided by
         Exhibit I hereto.

         6.4   As soon as is practicable after the end of each Month, the
Company shall submit to BP an invoice showing an adjustment to the Fixed Costs
based on the difference between the estimated Fixed Costs paid by BP and
referred to in Section 6.2(a) hereof and the actual Fixed Costs due for that
Month based on any adjustments thereto necessary to fully reimburse the Company
for all Fixed Costs for the Month.  The net sum due to the Company or any
credit due to BP resulting from the items referred to in Section 6.4 hereof
shall be paid or credited, as the case may be, on or before the twelfth Day
after receipt of the invoice (or if such Day is not a Business Day, on the
Business Day next following).

         6.5   The Company and BP shall cooperate in investigating, evaluating
and implementing mutually agreeable methods to reduce the Variable Costs and
the Fixed Costs; provided, however, that nothing contained in this Section 6.5
shall be construed to apply or pertain to any Capital Project.





                                      -21-
<PAGE>   27
         6.6     (a) For the period of time from December 12, 1988 through the
end of the First Additional Term within ninety (90) Days after the end of each
Contract Year, BP shall pay to the Company in cash an amount equal to *** of
any Profit for such Contract Year as an additional fee hereunder.

                 (b)      Commencing August 1, 2006 through the termination of
         this Agreement, the Company's share of Profit will be increased during
         the period from *** to the quotient, expressed as a percentage,
         obtained as a result of the application of the following formula:

                        Sterling Profit Share (%) = ***

         where "Unit Capacity" is the rated daily output of the Unit multiplied
         by 325 days in millions of pounds on August 1, 2006.

                 BP shall pay *** to the Company on the first day of each
         January, April, July and October (*** per Contract Year) during this
         period as an advance of the Company's share of Profit for such
         Contract Year.  (The period from August 1, 2006 through December 31,
         2006, and the period from January 1, 2016 through July 31, 2016, shall
         each be considered a Contract Year, with payments by BP to the Company
         during such periods being prorated.  For example, during the period
         from August 1, 2006 through December 31, 2006, a *** payment shall be
         made on August 1, 2006 and a payment of *** shall be made on November
         1, 2006 [***, the quotient obtained by dividing 61 (the number of days
         remaining in 2006) by 365].  If for any Contract Year of twelve months
         the Company's share of Profit is less than ***, the difference between
         *** and the amount of the Company's share of Profit for such Contract
         Year ("Surplus Payment") shall accumulate from year to year.  (For
         Contract Years of less than 12 months in which the payments by BP to
         the Company have been prorated, the amount of the Company's share of
         Profit used to calculate the amount of any





                                      -22-
<PAGE>   28
         Surplus Payment shall also be prorated on the same basis as the
         payments by BP to the Company during the Contract Year were prorated.)
         If at the beginning of any Contract Year a Surplus Payment
         accumulation exists and the amount of the Company's share of Profit at
         the end of such year (calculated in the manner provided by Section
         6.6(b)) exceeds *** , BP shall be entitled to reduce the amount of the
         Company's share of Profit for such year (but not below *** for
         Contract Years of 12 months, with such amount prorated for Contract
         Years having less than 12 months) until the sum of the accumulated
         Surplus Payments has been reduced to zero.  Any accumulated Surplus
         Payment which has not been paid by December 31, 2016 shall be forgiven
         by BP.

                 Notwithstanding the provisions above, if in any Contract Year
         of 12 months the Profit is less than ***, BP shall be entitled to take
         a credit equal to the difference between the *** advanced and the
         total Profit for the Contract Year.  BP shall take such credits
         against the *** per quarter advance payments to the Company in the
         Contract Year immediately following.  (In this manner, BP shall not be
         required to pay out a sum that exceeds that total Profit for a
         Contract Year.)  The difference between cash received by the Company
         (the *** advanced, less the subsequent credits to BP) and the
         Company's calculated Profit Share shall be accumulated as Surplus
         Payment for future recovery by BP as described above.

                 Example calculations of the Company's share of Profit are
         shown on Exhibit H.

                 (c)      During the Second Additional Term the Company will be
         reimbursed by BP for all costs of Minor Capital Items and the costs of
         Major Capital Items will be shared in accordance with the Profit
         sharing ratios in effect during the period.  For these purposes, a
         "Major Capital Item" shall be a Capital Expenditure of ONE HUNDRED
         THOUSAND





                                      -23-
<PAGE>   29
         AND NO/100 DOLLARS ($100,000.00) U.S. or more, and a "Minor Capital
         Item" shall be a Capital Expenditure of less than ONE HUNDRED THOUSAND
         AND NO/100 DOLLARS ($100,000.00) U.S.  Expenditures on Major Capital
         Items will have no effect on the definition of Profit, and such
         expenditures will be made for jointly approved projects without regard
         to the presence or absence of Profit or any accumulated Surplus
         Payment.

                 Expenditures for any major project that would achieve
         beneficial operation after August 1, 2006, but that would require fund
         disbursement prior to August 1, 2006, shall be shared in accordance
         with the Profit sharing ratios to become effective on August 1, 2006
         without regard to the impact such major project may have on Unit
         Capacity after August 1, 2006.

         6.7   If BP has reason to dispute the accuracy of any invoice
submitted to it by the Company, other than invoices for the Fixed Costs or the
Variable Costs, BP will pay that part of the invoice which is undisputed in
accordance with the provisions of this Article 6 and, after such dispute has
been resolved, BP will pay any balance due to the Company on or before the
twelfth day after the receipt by BP of a replacement invoice submitted to it by
the Company.  If BP has reason to dispute the accuracy of any Fixed Costs for
any Month or any Variable Costs for any Month, BP will pay an amount at least
equal to the Fixed Costs or the Variable Costs, as the case may be, paid by BP
to the Company for the preceding Month in accordance with the provisions of
Sections 6.2 and 6.3 hereof and, after such dispute has been resolved, BP will
pay any balance due to the Company or the Company will pay any balance due to
BP, as the case may be, on or before the twelfth day after the receipt by BP of
a replacement invoice submitted to it by the Company; provided, however, that
in the event that any balance is due to BP, such replacement invoice be
submitted to BP later than ten (10) days after such dispute has been resolved.





                                      -24-
<PAGE>   30
         6.8     The Company shall maintain records and production data in
accordance with usual and customary practices and standards in the acetyls
industry in respect of all matters referred to in this Article 6. The Company
shall provide BP access to such records and data pursuant to the provisions of
Section 22.1 hereof.

         6.9   The suspension of the obligations of the Company hereunder to
produce and supply Acetic Acid by reason of a force majeure event shall not
suspend BP's obligation to make the payments required hereunder.

                                   ARTICLE 7

                  PRODUCT OWNERSHIP, DELIVERIES AND SHIPMENTS

         7.1   Title to all Acetic Acid and Unit Product shall automatically
vest in BP from the moment of initial production, and all Acetic Acid and Unit
Product produced in the Unit shall at all times remain one hundred percent
(100%) owned by BP.  Solely for purposes of establishing BP's title to and
ownership of all Acetic Acid and Unit Product produced in the Unit, the Company
shall execute and deliver to BP an information UCC financing statement and/or
other necessary documents in a form reasonably acceptable to BP and any
renewals thereof as reasonably requested by BP to reflect such BP ownership of
Acetic Acid and Unit Product as a matter of public record. The Point of
Delivery of any Acetic Acid for purpose of offsite shipment shall be the point
of transfer of custody of such Acetic Acid from the Company to BP, and shall
mean (i) the first intake flange on the Barge or other inland water or marine
vessel into which the Acetic Acid is loaded for shipment, and (ii) the
perimeter boundary line of the Plant with respect to any Rail Car, Additional
Rail Car, truck or other conveyance into which the Acetic Acid is loaded for
shipment.  Risk of loss shall pass to BP at such flange or perimeter boundary
line, as the case may be (irrespective of





                                      -25-
<PAGE>   31
whether the Company owns or has provided any Barge, Rail Car, Additional Rail
Car or other conveyance into which the Acetic Acid is loaded). As between the
Company and BP, except as otherwise provided in Section 7.2 hereof, the Company
shall be in control and possession of the Acetic Acid produced hereunder and
responsible for any damage or injury caused thereby until risk of loss with
respect there to has passed to BP.  In addition to its other obligations
hereunder, BP shall be in control and possession of the Acetic Acid produced
hereunder and responsible for any damage or injury caused thereby after risk of
loss with respect thereto has passed to BP.

         7.2   Subject to the terms and conditions of this Agreement and to
normal and customary shipping practices, the Company shall make available to BP
at all times hereunder the Barge and the Rail Cars for movement of the Acetic
Acid, except when the Barge and/or the Rail Cars are being stored or used under
instruction for BP, provided that the Estimated Delivery, Shipment and Storage
Instructions, the Delivery, Shipment and Storage Instructions or any additional
shipping instructions state (i) the number of Rail Cars required by BP and the
date(s) on which the same are required, (ii) the date(s) on which the Barge is
required, (iii) transfer, connection and dispatch instructions, and (iv) such
other information as may be reasonably required by the Company. The Company
shall bear the costs of regular maintenance and repair of the Barge and the
Rail Cars and in-Plant loading and switching charges and other normal expenses
with respect to the ownership and operation thereof.  The Company shall not be
required to pay any Capital Expenditures with respect to the Barge or the Rail
Cars unless BP is obligated to reimburse the Company therefor as provided in
Article 16 hereof. The use of the Barge or any Rail Car by BP shall not affect
or alter the Point of Delivery hereunder or the time of the passing of risk of
loss with respect to the Acetic Acid. The Company shall have no liability for
any loss, damage, injury or other event or occurrence involving





                                      -26-
<PAGE>   32
the Barge or any Rail Car other than loss, damage or injuries resulting solely
from the gross negligence or willful misconduct of the Company, its agents or
employees.

         At such times as it becomes necessary to supplement the Rail Cars with
additional rail cars ("Additional Rail Cars") for transporting Unit Product to
customers, the costs of leasing the Additional Rail Cars shall be billed to BP
on a monthly basis.  Costs shall include lease fees, less mileage credits
received by the Company for the use of the Additional Rail Cars.  The
utilization of the Rail Cars and the Additional Rail Cars will be reviewed at
least annually to determine whether new cars are required or subleases should
be sought for excess rail cars in the fleet.  BP will make best efforts to use
any excess Rail Cars or Additional Rail Cars within its system for other
products, crediting the Profit with agreed sublease fees.

         7.3   BP may from time to time request that the Company arrange the
delivery and transportation of Acetic Acid in accordance with the Delivery,
Shipment and Storage Instructions or any additional instructions referred to in
Section 4.2 hereof and the Company may at its option comply with any such
request of BP; provided, however, that the Company shall have no liability or
other obligation with respect to its having arranged the delivery and
transportation of any Acetic Acid pursuant to this Section 7.3. If the Company,
in arranging for the delivery and transportation of Acetic Acid pursuant to
this Section 7.3, earns or realizes discounts or other cost savings as a result
of aggregating shipments or by reason of other economies of scale, such
discounts and other cost savings shall be proportionately shared with BP on the
basis on which such discounts and other cost savings were earned or realized by
the Company. BP shall reimburse the Company for any additional costs incurred
by the Company in the performance of any request of BP pursuant to the
provisions of this Section 7.3.





                                      -27-
<PAGE>   33
                                   ARTICLE 8

                                    TESTING

         8.1   The Acetic Acid and Unit Product shall be tested prior to
delivery to BP under the testing procedures and schedules being utilized by the
Company at the Effective Date.  Such procedures and schedules may be changed
from time to time by the agreement of BP and the Company.  The Company shall
retain representative samples for sufficient time to allow delivery to and
acceptance by BP's customers of such product. The Company shall provide BP
access to such samples and all records maintained by the Company with respect
there to pursuant to the provisions of Section 22.1 hereof.

         8.2   Confirmatory tests of the quality of Acetic Acid shipments shall
be performed at the time of delivery according to the procedures and schedules
referred to in Section 8.1 hereof and where requested, in the presence of an
independent surveyor, utilizing representative samples taken from the intake
flange of the Barge, other inland water or marine vessel, any Rail Car,
Additional Rail Car, truck or other conveyance, and from the tanks thereof
where necessary, into which the Acetic Acid is loaded.  The Company shall
retain such samples for sufficient time to allow delivery to and acceptance by
BP's customers of such product.  The Company shall provide BP access to such
samples and certifications and all records maintained by the Company with
respect thereto pursuant to the provisions of Section 22.1 hereof.

         8.3   All product made pursuant to the provisions of Article 5 hereof
when tested according to the agreed procedures and schedules shall be
conclusively presumed to constitute Acetic Acid unless analysis of the sample
retained pursuant to the provisions of Sections 8.1 or 8.2 hereof shows the
product not to have been Acetic Acid.





                                      -28-
<PAGE>   34
         8.4   BP shall have the right, at BP's expense, to have the Acetic
Acid tested by independent third parties prior to shipment as Acetic Acid
hereunder, so long as any such testing does not materially interfere with Unit
or Plant operations, and the Company shall cooperate in any such test and shall
have the right to be represented and to participate in any such test and to
inspect any equipment used in determining the nature or quality of the Acetic
Acid or Unit Product.

                                   ARTICLE 9

                                  MEASUREMENT

         9.1   The Unit of Measurement of Acetic Acid shall be one pound
(avoirdupois). All quantities given herein, unless otherwise expressly stated,
are in terms of such Unit of Measurement.

         9.2   The Company shall maintain and operate the Acetic Acid Measuring
Equipment and the Methanol Measuring Equipment in accordance with customary
practice in the industry and all applicable laws and regulations. BP may, at
its option and expense, install measuring equipment for checking the Acetic
Acid Measuring Equipment or the Methanol Measuring Equipment so long as such
installation does not materially interfere with the operation of the Unit or
the Plant.

         9.3   BP shall have the right, at BP's expense, to monitor and check
the measurement of Acetic Acid from the Unit into the tanks of the Barge, other
inland water or marine vessels, any Rail Cars, Additional Rail Cars, trucks or
other conveyances into which the Acetic Acid is loaded, in the presence of an
independent surveyor.  Any reports and certifications resulting from such
monitoring and checking will be made available by BP to the Company on request.

         9.4   The determination of the quantity of Acetic Acid deliveries
hereunder for inland water and marine vessel transport shall be made by taking
the opening and closing inventory of the Company's properly calibrated shore
tank before and after each shipment.





                                      -29-
<PAGE>   35
         9.5   The determination of the quantity of Acetic Acid deliveries
hereunder for transport by rail car or tank truck shall be made by weighing the
rail cars or tank trucks on certified scales before and after loading.  The
receiving party shall gauge or weigh the rail cars or tank trucks upon arrival
and, if the amount gauged or weighed is different than the weight obtained
prior to shipment by more than one percent (1%), the receiving party shall
notify BP, and BP will in turn notify the Company, and the procedures set forth
in Section 9.7 hereof shall apply.

         9.6   Each party shall have the right to be present at the time any
installing, reading, cleaning, changing, repairing, inspecting, testing or
adjusting is done in connection with the other party's measuring equipment used
in measuring deliveries hereunder.  The records from such measuring equipment
shall remain the property of the owner thereof, but, upon request, each party
will submit to the other party its records, charts and weight tickets, together
with calculations therefrom, subject to return within fifteen (15) days after
receipt thereof.  Such records, charts and weight tickets shall be kept on file
for a period of not less than ninety (90) days.

         9.7   If upon any test the measuring equipment is found to be
inaccurate in the aggregate by one percent (1%) or more, any payment based upon
such measurements shall be corrected at the rate of such inaccuracy for any
period of inaccuracy which is definitely known or agreed upon, or if not known
or agreed upon, then for a period extending back one-half (1/2) of the time
elapsed since the last successful test. Following any test, any measuring
equipment found to be inaccurate to any degree shall be adjusted as soon as
practicable to measure accurately.  If for any reason any measuring equipment
is out of service or out of repair so that the quantity of Acetic Acid
delivered cannot be ascertained or computed from the readings thereof, the
quantity of Acetic Acid so delivered during the period the measuring equipment
is out of service or out of repair shall be





                                      -30-
<PAGE>   36
estimated and agreed upon by the parties upon the basis of the best available
data, using the first of the following methods which is feasible:

                 (a)      By using the results of any check measuring equipment
         or other measuring device of BP, if installed and measuring
         accurately;

                 (b)      By using the ship's records of tank measurements
         where Acetic Acid has been loaded onto a ship;

                 (c)      By correcting the error if the percentage of error is
         ascertainable by test or mathematical calculation; or

                 (d)      By estimating the quantity of deliveries during
         preceding periods under similar conditions when the measuring
         equipment was measuring accurately.

         9.8   Notwithstanding the foregoing, the Company's measurements shall
be deemed to be accurate for purposes of all deliveries made hereunder unless
as to any particular delivery, BP objects thereto in writing delivered to the
Company within three (3) weeks after such delivery to BP's customer.

                                   ARTICLE 10

                       STORAGE OF ACETIC ACID BY COMPANY

         10.1   The Unit presently contains three (3) bulk storage tanks (Nos.
5OT508-1, 5OT508-2 and 5OT508-3) with an aggregate storage capacity of
approximately 30,000,000 pounds.  The Company shall use such bulk storage tanks
for the storage of Acetic Acid as designated by BP in the Estimated Delivery,
Shipment and Storage Instructions and the Delivery, Shipment and Storage
Instructions or as otherwise determined by the Company. Should any such bulk
storage tank be taken out of service by the Company for repair service, the
Company will, so long as the costs with respect





                                      -31-
<PAGE>   37
thereto are subject to reimbursement under this Agreement or included as a part
of the Fixed Costs, repair the same and place it back in service as soon as is
practicable.

                                   ARTICLE 11

                     OPERATION OF UNIT AND RELATED MATTERS

         11.1   The Company shall have the authority to, and does hereby agree
to, operate the Unit subject to the terms and conditions of this Agreement.
Unless otherwise provided herein, the Company shall operate the Unit in
accordance with the Delivery, Shipment and Storage Instructions of BP provided
that such operation (i) is not in violation of this Agreement, prudent
operation and maintenance procedures, or applicable laws and (ii) does not have
the effect of altering the Specifications unless agreed between the Company and
BP.

         11.2   Notwithstanding any other provision of this Agreement to the
contrary, the Company shall operate the Unit and perform its other obligations
hereunder using the same standard of care as it would use in operating its
other units at the Plant, and the Company shall have no liability hereunder
based on any higher standard of care.

         11.3   In the event that for any reason maintenance, utilities or
other services and resources at the Plant become limited, the Company agrees
that it will in good faith allocate such maintenance, utilities, services and
resources between the Unit and the other activities at the Plant on a fair and
equitable basis having regard to the needs of BP hereunder and third parties
under contracts for the sale by the Company of other chemicals produced in the
Plant.

         11.4   Effective for the Company's fiscal year beginning October 1,
1991, the Company will prepare a detailed annual maintenance budget for the
Unit, which will cover the period October 1 to September 30 on an evergreen
basis.  This budget will be available for review by BP 45 days prior to each
October 1 and will be agreed to by both parties by September 15 of each year.
If there is a





                                      -32-
<PAGE>   38
need to undertake significant additional maintenance or, if certain scheduled
items are found no longer to require attention, additions or deletions will be
mutually agreed upon.  The Company shall keep a record of maintenance spending
and will report such spending to BP upon reasonable notice from BP.  Such
reports will include, as a minimum requirement:  any agreed changes to the
original budget, actual spending compared to budget, and an annualized total
forecast including agreed additions or deletions.  BP shall have access to the
Company's maintenance records necessary to verify the accuracy of all items
charged against maintenance to the extent and in the manner provided in Article
22 of this Agreement.

                                   ARTICLE 12

                             SHUT-DOWNS OF THE UNIT

         12.1   The parties agree that the Unit will be shut down for such
periods of time as are required to accomplish the Scheduled Shutdowns.  During
such shut-down, the Company shall not be required to produce Acetic Acid
hereunder and it is the present intention of the parties to utilize the Unit's
storage capacity to accumulate Acetic Acid for delivery during such Scheduled
Shutdowns.  Any such Scheduled Shutdown shall affect neither the obligations of
BP to make all other payments due hereunder nor the other covenants and
agreements of the parties hereunder.

         12.2   Upon reasonable notice from BP, the Company shall temporarily
cease or reduce the production of Acetic Acid at the times and for the periods
so requested.  In such event, in addition to all other payments required
hereunder, BP shall reimburse the Company upon receipt of invoice therefor and
reasonable supporting detail as BP's auditors may reasonably require for any
and all additional costs and expenses incurred in connection with such
cessation or reduction, including, without limitation, increased costs of
production of other products produced at the Plant resulting





                                      -33-
<PAGE>   39
from such cessation or reduction; provided that the Company shall have a duty
to reasonably mitigate any such additional costs and expenses and to share with
BP any benefit in excess of such additional costs that the Company may obtain
or derive as a result of such cessation or reduction of production.

         12.3   In the event BP gives six (6) Months' prior written notice to
the Company that, in its judgment, the Unit should be permanently shut down,
(i) the Company shall proceed to shut down the Unit, and BP shall pay all
expenses of such shutdown, and (ii) the Company shall reduce the Fixed Costs as
soon as is practicable. Notwithstanding such shut-down, BP shall remain
obligated to pay the Fixed Costs for a full six (6) Months after the date of
such shut-down.  Thereafter, BP shall have no further obligations hereunder to
pay the Fixed Costs; provided, however, that BP shall reimburse the Company for
(i) all insurance, maintenance, security and other expenses thereafter incurred
by the Company with respect to the Unit, provided that the Company has a duty
to reasonably mitigate such expenses, and (ii) any and all additional expenses
incurred by the Company in connection with such permanent shut-down including,
but not limited to, (X) all amounts due or that become due to Praxair under the
Praxair Production Agreement, whether as a result of the shutdown or otherwise
(net of any benefit derived by the Company in connection with the shutdown
pursuant to the Praxair Production Agreement) and (Y) increased costs of
production of other products produced at the Plant (other than the Unit)
provided that the Company shall have a duty to reasonably mitigate any such
additional expenses.  The Company shall not be required to operate the Unit or
to maintain the Unit in a condition which is ready for production of Acetic
Acid.  Any such permanent shut-down shall affect neither the obligations of BP
to make all other payments due hereunder (including but not limited to the
First Extension Fee) nor the other covenants and agreements of the parties
hereunder.





                                      -34-
<PAGE>   40
         12.4   During the First and Second Additional Terms, in the event of a
fire, explosion, flood, hurricane, windstorm or other casualty resulting in the
loss of the Unit or a substantial part thereof or the inability for a period of
more than three (3) Months of the Company to deliver Acetic Acid as required by
BP, the Company and BP shall meet to decide whether or not to repair the Unit.
If the Company and BP agree to repair the Unit, the Unit shall be repaired and
the parties' obligations under this Agreement shall continue, irrespective of
whether or not the proceeds of insurance are sufficient to pay all costs of
such repair.  Any costs of such repair in excess of the proceeds of insurance
shall be shared by the parties as Capital Expenditures in accordance with their
then applicable Profit sharing ratios.  If both parties agree not to repair the
Unit, this Agreement shall terminate whereupon the Company shall retain all
insurance proceeds and purchase BP's undepreciated book basis in the After
Acquired Assets, plus ten (10) percent, pursuant to Section 2.2 hereof;
provided, however, that such payment shall not exceed an amount equal to the
product obtained by multiplying the insurance proceeds of such After Acquired
Assets by (a) during the First Additional Term, *** or (b) during the Second
Additional Term, *** minus the Company's share of Profit calculated in
accordance with Section 6.5(b) hereof and the covenants and obligations
referred to in Articles 26 and 29 hereof shall survive such termination as set
forth therein.  If the Company and BP cannot agree whether or not the Unit
should be repaired, either party shall have the right to require the Unit to be
repaired and that the insurance proceeds be first applied to the payment of all
repair costs and the parties' obligations under this Agreement shall continue,
but the party requiring the repair shall bear all costs of such repair in
excess of the proceeds of insurance and shall have the right to fully
depreciate such excess repair costs.

         12.5   The Company will prepare a detailed shutdown reserve ("SDR")
account for the Unit and a corresponding schedule for major shutdowns and
update these on a regular basis.  The period





                                      -35-
<PAGE>   41
over which the shutdown reserve is accrued is agreed to be a nominal 24 months
consistent with the expected major shutdown schedule.  BP and the Company will
review and agree on the SDR account and corresponding major shutdown schedule
by October 1 of each year.

         Once agreed, the amount for "Shutdown Reserve" in the Fixed Costs
shall be revised so that the sum of the monthly charges in current dollars
during the interval between major shutdowns (nominally 24 months) will equal
the total.  If, during the period prior to the major shutdown, additions or
deletions of major (non-routine) items to or from the reserve account may be
mutually agreed upon.  After completion of a major shutdown, total costs will
be reconciled against the SDR account.  Any difference will then be used to
recalculate the next SDR.

         In the event that there is a significant change to the major shutdown
schedule, the parties may agree to modify SDR charges to reflect the expected
interval between major shutdowns.  BP shall have access to the Company's
records necessary to verify the accuracy of charges made against the SDR
account to the extent and in the manner provided in Article 22 of this
Agreement.

                                   ARTICLE 13

                                   INSURANCE

         13.1   As of the Amendment Effective Date, the Company will obtain the
insurance coverage for the benefit of the Company and BP as described on
Exhibit G attached here to in respect of the Unit.  The Company shall obtain
adequate insurance coverage for those parts of the Plant which serve the Unit.
In the event that any parts of the Plant which serve the Unit are destroyed or
damaged, whether by the insured risks or not, the Company shall rebuild the
same as soon as practicable and to the extent that the insurance proceeds are
deficient will make up the difference from its own funds.  The Company shall
advise BP whenever any insurance policy or area of





                                      -36-
<PAGE>   42
coverage listed on the Summary of Insurance Coverage as set out in Exhibit G to
this Agreement is renegotiated or otherwise changed.  BP shall be advised prior
to making any major changes in these coverages and shall be afforded a
reasonable opportunity to review such changes.  If, as a result of such review,
it is determined that the revised coverages do not provide equivalent value to
the coverages required by Exhibit G, the parties shall agree to revise cost
allocations to the Unit and revise the Fixed Costs as appropriate.  The Company
and BP shall jointly review and compare current insurance coverages with those
specified in Exhibit G, on an annual basis.  BP shall be named an additional
insured with respect to the Unit on the policies as specified in Exhibit G and
no action to drop coverage for BP or increase insurance policy deductibles
shall be taken by the Company without prior approval by BP.

         13.2   During the Initial Term and the First and Second Additional
Terms, the Company shall maintain such insurance coverage, and all insurance
premiums in respect of the insurance for the Unit which are not included in the
Fixed Costs shall be paid by BP on receipt by BP of an invoice.

                                   ARTICLE 14

                               ACCESS TO THE UNIT

         14.1   The Company agrees that upon written request by BP, the Company
shall provide to BP, at cost, reasonably suitable office accommodation at the
Plant for a limited number of BP personnel.

         14.2   The Company agrees to permit BP personnel, at the cost of BP,
to have access to the Unit at reasonable times and on reasonable notice and
consistent with the Company's contractual obligations under licenses or
sub-licenses to which it is a party.  BP shall indemnify and hold the





                                      -37-
<PAGE>   43
Company harmless pursuant to the provisions of Article 30 hereof from Damages
which the Company may suffer or incur by reason of its admission of such BP
personnel to the Unit.

                                   ARTICLE 15

                                METHANOL SUPPLY

         15.1   BP shall provide Methanol meeting the specifications described
in Exhibit C attached hereto in the volumes and at the times required by the
Company to operate the Unit and supply Acetic Acid as required hereby.   The
Company shall provide adequate facilities to receive, handle and store, on
behalf of BP for use in the Unit, Methanol delivered by pipeline from the
Methanol Facility or Methanol delivered by sea in up to 6,000 metric ton
shipments.  Title to all Methanol supplied by BP for use in the Unit shall at
all times remain one hundred percent (100%) in BP.  Solely for purposes of
establishing BP's title to and ownership of such Methanol supplied by BP for
use in the Unit, the Company shall execute and deliver to BP an information UCC
financing statement and/or other necessary documents in a form reasonably
acceptable to BP and any renewals thereof as reasonably requested by BP to
reflect such BP ownership of Methanol supplied by BP as a matter of public
record.

         15.2   For all Methanol delivered pursuant to Section 15.1 by means
other than pipeline from the Methanol Facility, the cost of  Methanol consumed
shall be the price payable by BP from time to time to its major Methanol
supplier together with any reasonable costs incurred by BP in connection with
its purchase of Methanol from such supplier, including, without limitation, the
costs of delivery from the said supplier's terminal to the Company.

         For all Methanol delivered pursuant to Section 15.1 by pipeline from
the Methanol Facility, the cost for the Methanol consumed in the Unit shall be
the price of Methanol as reported for the





                                      -38-
<PAGE>   44
Month of delivery in the Transaction Index of the Methanol and Derivatives
Pricing Table contained in the Methanol and Derivatives Monthly Business Report
(published monthly by Petrochemical Consultants International), appropriately
adjusted to reflect the FOB Gulf Coast Price for Methanol available to large
volume users.

         For any Month, Methanol consumption shall be equal to the amount
measured by the Methanol Measuring Equipment.

         15.3   For all Methanol delivered pursuant to Section 15.1 by any
means other than pipeline from the Methanol Facility, the point of delivery
shall be the point of transfer of custody of such Methanol to the Company,
which for purposes of this Agreement shall mean the last exit flange on the
ship or other conveyance from which the Methanol is unloaded.  Risk of loss
shall pass from BP to the Company at such flange and the Company shall be in
control and possession of Methanol delivered pursuant to Section 15.1 hereof
and responsible for any damage or injury caused thereby after risk of loss with
respect thereto has passed to it.  As between the Company and BP, BP shall be
deemed to be in control and possession of Methanol delivered by BP pursuant to
Section 15.1 hereof and responsible for any damage or injury caused thereby
until risk of loss with respect thereto has passed to the Company.

         15.4   The Methanol produced in the Methanol Facility and purchased by
BP for use in the Unit shall be transferred by the Company by pipeline to the
Unit.

                                   ARTICLE 16

                              SPECIAL EXPENDITURE

         16.1   The Company may approve any project requiring Special
Expenditure and make any Special Expenditure, regardless of amount, in any
Contract Year if such project and such Special





                                      -39-
<PAGE>   45
Expenditure have been included in the Company's operating plan under this
Agreement for such Contract Year and such plan was approved by BP prior to the
payment of such Special Expenditure. Upon receipt of invoice therefor, BP will
promptly reimburse the Company for a Special Expenditure incurred in accordance
with this Section 16.1.

         16.2   A project and Special Expenditure not contemplated by Section
16.1 hereof, and the manner of reimbursement or payment to the Company
therefor, shall be agreed upon by the parties hereto.  The Company may, where
circumstances reasonably require, without the approval of BP, commence a
project and Special Expenditure not contemplated by Section 16.1 hereof
necessary, in the judgment of the Company, (i) to ensure that the Unit, the
Barge, the Rail Cars, the Additional Rail Cars and the operation of any of the
foregoing and the production, delivery, storage, shipment, sale, resale, use,
disposal or transportation of Acetic Acid, Unit Product, feedstock, supplies
and materials comply with applicable law and regulations, and (ii) to provide
for the health, safety and welfare of the Company's employees on the Unit;
provided, however, that the Company shall at the earliest practicable
opportunity notify BP of such project and Special Expenditure, and thereupon
the manner of reimbursement or payment shall be as follows:

         (a)     All costs actually incurred by the Company with respect to
such project and Special Expenditure prior to notifying BP of the commencement
thereof shall be promptly reimbursed by BP to the Company upon receipt of
invoice therefor;

         (b)     If the parties hereto agree, the Company shall be paid for
additional costs to be incurred by the Company with respect thereto as agreed
by the parties hereto;

         (c)     If the parties fail to agree, the Company shall at its option
(i) cease such project and Special Expenditure, or (ii) continue such project
and Special Expenditure at its own cost; provided, however, that the Company
may refer the matter to arbitration under Article 25 hereof.





                                      -40-
<PAGE>   46
                                   ARTICLE 17

                              CAPITAL EXPENDITURES

         17.1   During the Initial Term and the First Additional Term, all
Capital Expenditures shall be paid by the Company but shall be reimbursed by BP
upon receipt of an invoice, provided that the Company complies with the
procedures described in this Article 17.  Each Contract Year during the Initial
Term and the First Additional Term BP shall recover payment of the Company's
share of Capital Expenditures (determined in accordance with the parties then
applicable Profit sharing ratios) by deducting the Company's share of Capital
Expenditures for that year from the Company's share of Profit, if any, for that
year.  In the event the Company's share of Capital Expenditures is greater than
the Company's share of Profit for any Contract Year, the Company shall pay BP
the difference within ninety (90) days after the end of each such Contract
Year. During the Second Additional Term, all Minor Capital Items shall be paid
by the Company but reimbursed by BP upon receipt of an invoice, provided that
the Company complies with the procedures described in this Article 17.  During
the Second Additional Term, the cost of all Major Capital Items will be
invoiced to BP in accordance with the Profit sharing ratios in effect during
such period.  During the Second Additional Term, expenditures on Major Capital
Items will have no effect on the definition of Profit, and such expenditures
will be made for jointly approved projects without regard to the presence or
absence of Profit or any accumulated Surplus Payment.

         17.2   For any Contract Year a capital budget shall be prepared by the
Company and submitted for approval by BP no later than September 30 of the
previous Contract Year. Such capital budget shall consist of an outline
description of and an estimate of the Capital Expenditures for each identified
job and a lump sum provision in respect of other possible developments. Such
capital





                                      -41-
<PAGE>   47
budget will be discussed at the October Semiannual Meeting and approved in
whole or in part by BP at or subsequent to that meeting, but in any event
before the next succeeding January 1.

         17.3   When the Company desires to obtain a disbursement from BP for a
Capital Project described in the capital budget, the Company shall furnish BP
with the details of the proposed Capital Project including (i) the cost of such
proposed Capital Project, (ii) the benefits of the proposed Capital
Expenditure, and (iii) the changes which will result to the Variable Costs, the
Fixed Costs, the Acetic Acid production volume and the Specifications, for
authorization and disbursement of funds in accordance with the procedures in
Sections 17.4 through 17.6, inclusive, hereof.

         17.4   Further proposed Capital Projects may be added to the capital
budget described in Section 17.2 by the Company at any time during a Contract
Year, provided that the approval of BP has first been obtained.

         17.5   All Capital Projects may be committed to by the Company and
expended by the Company only after the approval of the authorized BP
representative who will, in respect of any Capital Project requiring Capital
Expenditures of more than *** U.S., submit the same to BP for approval.

         17.6   The effective date of any changes in the Specifications will be
the date the Capital Project in question is completed.  The actual results
arising from a Capital Project shall be determined by BP and the Company no
later than six (6) Months after such completion date.  If BP and the Company
agree that the actual results therefrom differ from those anticipated in
Section 17.2 hereof, the items referred to above in this Section 17.6 shall be
adjusted to take account of the actual results obtained.





                                      -42-
<PAGE>   48
         17.7   BP shall designate in writing to the Company the name of the
authorized BP representative for purposes of this Agreement which name may be
changed from time to time by BP by written notice to the Company.

         17.8   During the operation of the Agreement questions have arisen
regarding the allocation of certain U.S.  federal income tax deductions between
the Company and BP.  In order to clarify this situation and avoid confusion on
this issue in the future, the parties have agreed and do hereby agree as
follows:

                 (a)      At all times from and after August 1, 1986, the
         Company has been the beneficial owner of the Acetic Acid Plant Assets
         covered by the Production Agreement, being the following specific
         assets acquired by the Company from the Monsanto Company on August 1,
         1986, and therefore the Company is entitled to all available
         depreciation and/or amortization deductions with respect thereto:

                 All acetic acid process units, technology licenses, tank cars
                 and all personal property more particularly described on
                 Exhibit "B" of the Contract of Purchase and Sale of Real
                 Estate and Personal Property entered into between the Company
                 and BP, effective August 1, 1986, said Exhibit "B" being
                 incorporated herein by reference for all purposes as if copied
                 herein in full (the "Acetic Acid Plant Assets").

                 The parties hereby agree that BP is not and will not be
         entitled to any depreciation or amortization deductions with respect
         to the Acetic Acid Plant Assets.

                 (b)      BP will be entitled to any and all depreciation and
         amortization or expense deduction with respect to the After Acquired
         Assets, and the Company will be entitled to any and all depreciation
         and amortization or expense deductions with respect to that portion of





                                      -43-
<PAGE>   49
         any Capital Expenditure, Capital Project or Special Expenditure or any
         other expenditure unreimbursed by BP.

                 (c)      The payments required under the terms of the Note
         shall be currently deductible as rental expense by BP and recognized
         as income by the Company during the Initial Term.

                 (d)      The Company and BP will not file claims for refund,
         or any other form of return with the United States Internal Revenue
         Service, or with any governmental unit of any state, based on
         depreciation and/or amortization deductions inconsistent with the
         agreement reflected in this Section 17.8.

                                   ARTICLE 18

                                   PERSONNEL

         18.1   The Company shall at all times have sole authority with respect
to all personnel matters involving the employees, consultants and third-party
contractors at the Plant and the Unit, including, without limitation, salaries,
benefits, compensation, indirect personnel costs, manpower needs, training,
insurance, labor matters, working hours, job responsibilities, bonding and all
other employee, personnel-related and contracting matters.  Any incentive
schemes for employees on the Unit shall be made at the discretion and cost of
the Company.

                                   ARTICLE 19

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company represents and warrants to BP as follows:

         19.1   Organization, Good Standing and Corporate Power. The Company is
a corporation, duly organized, validly existing and in good standing under the
laws of the State of Delaware, is duly





                                      -44-
<PAGE>   50
qualified as a foreign corporation in the State of Texas, and has all requisite
corporate power and authority to carry on its business as presently conducted,
to enter into this Agreement and perform its obligations hereunder.

         19.2   Authority Relative to Agreement. The execution, delivery and
performance by the Company of this Agreement have been duly and effectively
authorized by all necessary corporate action.  This Agreement has been duly
executed and delivered by the Company and is a legal, valid and binding
obligation of the Company enforceable in accordance with its terms, except
insofar as enforcement may be limited by (i) bankruptcy, insolvency,
reorganization or similar laws relating to or affecting the enforcement of
creditors' rights generally, and (ii) general principles of equity.

         19.3   No Conflict with Other Instruments or Proceeding.  Neither the
execution and delivery of this Agreement, nor the performance or compliance
with the terms and conditions hereof conflict with, or will result in a breach
by the Company of, or constitute a default under, or result in the creation of
any lien, charge or encumbrance upon, any asset of the Company pursuant to any
of the terms, conditions or provisions of (i) the Certificate of Incorporation
or Bylaws of the Company, (ii) any mortgage, deed of trust, lease, contract,
agreement or other instrument to which the Company is a party by which the
Company may be bound or affected, or (iii) any writ, order, judgment, decree,
statute, ordinance, regulation or any other restriction of any kind or
character, to which the Company is subject, or by which the Company may be
bound or affected.

         19.4   No Litigation or Proceeding.  As of the date hereof, there are
no actions, suits, investigations or proceedings pending or to the Company's
knowledge threatened against the Company at law or in equity or before or by
any federal, state, municipal or other governmental or non-governmental
department, commission, board, bureau, agency or instrumentality seeking to
enjoin, restrain or otherwise prevent the execution and delivery of this
Agreement by the Company.





                                      -45-
<PAGE>   51
         19.5   No Warranties.  THE COMPANY HEREBY EXPRESSLY DISCLAIMS AND
NEGATES (i) ANY REPRESENTATION OR WARRANTY (EXPRESS, IMPLIED, COMMON LAW,
STATUTORY OR OTHERWISE) RELATING TO THE UNIT, THE BARGE, THE RAIL CARS, THE
ADDITIONAL RAIL CARS, OR THE OPERATION OF ANY OF THE FOREGOING, OR ANY OTHER
TANGIBLE PERSONAL PROPERTY AND FIXTURES INCLUDING, BUT NOT LIMITED TO, ANY
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR FITNESS OF
DESIGN OR ENGINEERING, EXCEPT AS EXPRESSLY SET FORTH HEREIN, AND (ii) ANY
IMPLIED REPRESENTATION OR WARRANTY RELATING TO ANY ACETIC ACID OR UNIT PRODUCT
SOLD HEREUNDER, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR FITNESS OF DESIGN OR
ENGINEERING.

                                   ARTICLE 20

                      REPRESENTATIONS AND WARRANTIES OF BP

         BP represents and warrants to the Company as follows:

         20.1   Organization.  BP is a corporation duly organized, validly
existing and in good standing under the laws of the State of Ohio and is duly
qualified to do business as a foreign corporation in the State of Texas and has
all requisite corporate power and authority to carry on its business as
currently conducted, to own and operate the properties owned by it and to enter
into this Agreement and perform its obligations hereunder.

         20.2   Authority Relative to Agreement. The execution, delivery and
performance by BP of this Agreement have been duly and effectively authorized
by all necessary corporate action. This





                                      -46-
<PAGE>   52
Agreement has been duly executed by BP and is a legal, valid and binding
obligation of BP enforceable in accordance with its terms, except insofar as
enforcement may be limited by (i) bankruptcy, insolvency, reorganization or
similar laws relating to or affecting the enforcement of creditors' rights
generally, and (ii) general principles of equity.

         20.3   No Conflict with Other Instruments or Proceedings.  Neither the
execution and delivery of this Agreement, nor the performance or compliance
with the terms and conditions hereof conflict with, or will result in a breach
by BP of, or constitute a default under, or result in the creation of any lien,
charge or encumbrance upon, any of its assets pursuant to any of the terms,
conditions or provisions of (i) the Certificate of Incorporation or Bylaws of
BP, (ii) any mortgage, deed of trust, lease, contract, agreement or other
instrument to which BP is a party or by which BP may be bound or affected, or
(iii) any writ, order, judgment, decree, statute, ordinance, regulation or any
other restriction of any kind or character, to which BP is subject, or by which
BP may be bound or affected,

         20.4   No Litigation or Proceedings.  As of the date hereof, there are
no actions, suits, investigations or proceedings pending or to BP's knowledge
threatened against or affecting BP at law or in equity or before or by any
federal, state, municipal or other governmental or non-governmental department,
commission, board, bureau, agency or instrumentality seeking to enjoin,
restrain or otherwise prevent the execution and delivery of this Agreement by
BP.

                                   ARTICLE 21

                         PARTICIPATION IN NEGOTIATIONS

         21.1   Upon any amendment to or the expiration from time to time of
any of the supply contracts in effect as of the Amendment Effective Date
pursuant to which natural gas or carbon monoxide are or are to be supplied to
the Unit, and before entering into any new supply contracts





                                      -47-
<PAGE>   53
for natural gas or carbon monoxide for the Unit, at BP's request the Company
shall permit BP to participate in (i) the negotiations which the Company
conducts with such suppliers and (ii) the resolution of any disputes relating
to the supply of natural gas or carbon monoxide to the Unit. Except as
otherwise provided herein, the Company may, without participation by BP,
negotiate and shall have the right, without the approval of BP, to enter into
all contracts relating to supplies, materials, feedstocks (except Methanol so
long as BP has not defaulted in its contractual obligations with respect
thereto), utilities, treatment, disposal and other services or materials or
property required in the Company's opinion for the operation of the Unit, the
Barge, the Rail Cars, the Additional Rail Cars, storage facilities and the
performance of its obligations hereunder.

                                   ARTICLE 22

                             ACCESS TO INFORMATION

         22.1   Upon written request by BP from time to time, the Company shall
provide to BP, its attorneys, accountants and other representatives, subject to
the confidentiality provisions of Section 26.1 hereof, at reasonable times
during normal business hours, access to the Company's books, records and
accounts relating to the operation of the Unit and the performance of the
Company's obligations under this Agreement, except as such access may be
prohibited by licenses or sub-licenses from a third party other than BPCL to
which the Company is a party. BP shall thereupon have the right to make copies
of and abstracts from such books, records and accounts, at BP's expense, which
copies may be removed from the premises of the Company and retained by BP,
subject to the confidentiality provisions of Section 26.1 hereof.

         22.2   The Company agrees to permit representatives of BP, at BP's
expense for purposes other than the Acetic Acid Technology Agreement, to have
(i) access to the Unit at reasonable times





                                      -48-
<PAGE>   54
and on reasonable notice to obtain information relating to the present or
proposed operations of the Unit so long as such access does not materially
disrupt the operation of the Unit, and (ii) access to the Plant at reasonable
times and on reasonable notice to obtain information and audit the
environmental status and condition of the Plant and the operations thereof as
long as such access does not materially disrupt the operation of the Plant and
BP pays all costs relating thereto.  BP agrees to furnish the Company with
copies of all information and audits obtained or prepared pursuant to the
provisions of this Section 22.2.  The Company shall make its employees and
other representatives available to BP for purposes other than the Acetic Acid
Technology Agreement at reasonable times on reasonable notice to discuss the
present or proposed operations of the Unit so long as such availability does
not materially disrupt the operation of the Unit or the Plant.  BP shall
reimburse the Company for all reasonable direct out-of-pocket costs incurred by
the Company in making such employees or other representatives available, on
receipt of an invoice therefor.

         22.3   Upon written request by the Company from time to time, BP shall
provide to the Company and its attorneys, accountants and other representatives
subject to the confidentiality provisions of Section 26.1 hereof, at reasonable
times during normal business hours, access to BP's books, records and accounts
relating to the calculation of Profit, Cost of Sales, Methanol supplies, cost
savings and the performance of BP's obligations under this Agreement.  The
Company shall thereupon have the right to make copies of and abstracts from
such books, records and accounts, at the Company's expense, which copies may be
removed from the premises of BP and retained by the Company, subject to the
confidentiality provisions of Section 26.1 hereof.





                                      -49-
<PAGE>   55
                                   ARTICLE 23

                              SEMIANNUAL MEETINGS

         23.1   At the Semiannual Meetings, the representatives of BP and the
Company shall review such matters as may be determined as appropriate by the
parties.

         23.2   By no later than September 30 of each Contract Year, the
Company shall deliver to BP a proposed operating plan (including proposed
Special Expenditures, Capital Projects and Capital Expenditures) for the Unit,
the Barge, the Rail Cars, the Additional Rail Cars and the other equipment and
property used in connection therewith, prepared by the Company in good faith
and upon realistic assumptions, for the following Contract Year.  At or after
the October Semiannual Meeting in each Contract Year and in any event prior to
the commencement of the next Contract Year, the parties shall formally agree on
and adopt the operating plan for the following Contract Year.  In the absence
of such an agreement on or before the first day of the Contract Year to which
such proposed operating plan would, if agreed, apply, the Company shall be
entitled to operate, maintain, repair, renovate, remodel, change and make
expenditures as may be reasonably necessary for the operation of the Unit and
in a manner consistent with the pattern of expenditure in the preceding
Contract Year but excluding any Capital Expenditures unless approved by BP
pursuant to this Agreement.

                                   ARTICLE 24

                              FINANCIAL ASSURANCES

         24.1   In the event any federal, state or other governmental authority
requires the Company to provide financial assurances in connection with the
Unit, its operations or any Spills or Releases Requiring Response Action, the
Company will use its best efforts to provide the same, and BP will





                                      -50-
<PAGE>   56
reimburse the Company for all premiums or other costs incurred in connection
with providing such financial assurances, upon receipt of invoice therefor. In
the event the Company is unable to provide such financial assurances, BP will
provide them.

                                   ARTICLE 25

                                  ARBITRATION

         25.1   All disputes, differences or questions arising out of or
relating to this Agreement (including, without limitation, those as to the
validity, interpretation, breach, violation or termination hereof) shall, at
the written request of either party, be finally determined and settled pursuant
to arbitration at Houston, Texas, by three (3) arbitrators, one (1) to be
appointed by the Company, one (1) by BP, and a neutral arbitrator to be
appointed by such two (2) party-appointed arbitrators.  The neutral arbitrator
shall be an attorney and shall act as chairman. Any such arbitration may be
initiated by a party by written notice ("Arbitration Notice") to the other
party specifying the subject of the requested arbitration and appointing such
party's arbitrator for such arbitration.

         25.2   Should (i) a party receiving an Arbitration Notice fail to
appoint an arbitrator as hereinabove contemplated by written notice to the
party giving the Arbitration Notice within ten (10) days after the receipt of
the Arbitration Notice, or (ii) the two (2) arbitrators appointed by or on
behalf of the parties as contemplated in Section 25.1 hereof fail to appoint a
neutral arbitrator as hereinabove contemplated within ten (10) days after the
date of the appointment of the last arbitrator appointed by or on behalf of the
parties, then a Judge of the United States District Court for the Southern
District of Texas, Houston Division, upon application of the Company or of BP,
shall appoint an arbitrator to fill any such position with the same force and
effect as though such arbitrator had been appointed as hereinabove
contemplated.





                                      -51-
<PAGE>   57
         25.3   The arbitration proceeding shall be conducted in the English
language in Houston, Texas, in accordance with the Rules of the American
Arbitration Association.  A determination, award or other action shall be
considered the valid action of the arbitrators if supported by the affirmative
vote of two (2) or three (3) of the three (3) arbitrators.  The costs of
arbitration (exclusive of the expense of a party in obtaining and presenting
evidence and attending the arbitration, and of the fees and expenses of legal
counsel to such party, all of which shall be borne by such party) shall be
shared equally by the Company and BP.  The arbitration award shall be final and
conclusive and shall receive recognition, and judgment upon such award may be
entered and enforced in any court of competent jurisdiction.

         25.4   The validity of the foregoing provisions of this Article 25
shall, to the fullest extent practicable, be governed by the Convention on the
Recognition and Enforcement of Foreign Arbitral Awards.

                                   ARTICLE 26

                   CONFIDENTIALITY AND INTELLECTUAL PROPERTY

         26.1   During the term of this Agreement and thereafter, all
information relating to the business, products, assets and finances of the
Company or BP or their respective Affiliates, including, but not limited to
financial statements and related books and records, minutes books, personnel
records, list of customers and potential customers, lists of suppliers and
potential suppliers, price and cost data, computer programs, computer hardware,
reports and similar information and records, excluding, however, all
information provided in connection with and covered by the Acetic Acid
Technology Agreement, shall be treated as confidential to the Company or BP or
their respective Affiliate, as the case may be, and as confidential by BP or
the Company, as the case may





                                      -52-
<PAGE>   58
be, and shall not be disclosed directly or indirectly by or for BP or the
Company or their respective officers, employees, agents, affiliates or
representatives to, or used for the benefit of, BP or the Company or any other
person.  At the termination of this Agreement, the obligations as to
confidentiality herein shall continue for a period of five (5) years from the
date of such termination.

         26.2   The rights and obligations of BP, BPCL and the Company with
respect to confidentiality and intellectual property relating to acetic acid
process or acetic acid technology licensed by BPCL to the Company are set forth
in the Acetic Acid Technology Agreement.

                                   ARTICLE 27

                          DEFAULTS; FAILURES; REMEDIES

         27.1   If a Company Event of Default shall occur and be continuing, BP
may, at its option, by written notice to the Company, declare the Company to be
in default hereunder ("Declaration of Company Default"); provided, however,
that a Declaration of Company Default shall not relieve or otherwise discharge
the Company from the performance of its obligations under this Agreement,
except to the extent that the exercise by BP of its remedies pursuant to the
provisions of Section 27.3 hereof otherwise prevents or restricts the Company
with respect thereto.

         27.2   If a BP Event of Default shall occur and be continuing, the
Company may, at its option, by written notice to BP, declare BP to be in
default hereunder ("Declaration of BP Default"); provided, however, that a
Declaration of BP Default shall not relieve or otherwise discharge BP from the
performance of its obligations under this Agreement.

         27.3   Forthwith upon a Declaration of Company Default, BP may, by
written notice to the Company, require the Company to permit, and the Company
shall permit at BP's risk, but at the Company's cost (subject to BP's duty to
reasonably mitigate such cost), such employees of BP as BP





                                      -53-
<PAGE>   59
may require to have access to the Unit and those parts of the Plant that serve
the Unit for the purpose of seeking and implementing (including, if necessary,
operating the Unit) a solution to the cause of the Company Event of Default or
failure, and the Company shall cause its employees to comply with the requests
and instructions of BP's said employees while present in the Plant or the Unit;
provided, however, that BP shall indemnify and hold the Company harmless
pursuant to the provisions of Article 30 hereof from Damages which the Company
may suffer or incur by reason of permitting such employees of BP to have such
access and provided further that BP shall not materially disrupt the Company's
operations on other parts of the Plant. BP's access to the Unit and those parts
of the Plant that serve the Unit shall continue until the Unit has operated so
as to enable the Company to comply with its obligations hereunder for one (1)
calendar month.  BP shall thereupon withdraw its employees from the Unit and
the Plant. After withdrawing such employees, BP shall not have any rights
pursuant to the provisions of this Section 27.3 of access to the Plant or the
Unit for a period of thirty (30) days beginning on the date of such withdrawal.
Once BP has withdrawn its employees, (i) if the Company fails to operate the
Unit during such thirty (30) day period following such withdrawal by BP in such
a manner as to enable the Company to comply with its obligations under this
Agreement, BP shall have the right to require the Company to permit BP's
employees to have access to the Unit and those parts of the Plant which serve
the Unit immediately upon the expiration of such thirty (30) day period, or
(ii) if the Company operates the Unit throughout such thirty (30) day period
following such withdrawal by BP in such a manner as to enable the Company to
comply with its obligations under this Agreement, BP shall have no right to
require the Company to permit BP's employees to have such access until a
subsequent Declaration of Company Default, if any.

         27.4   Forthwith upon a Declaration of BP Default, the Company may, by
written notice to BP, (i) cease all further production of Acetic Acid for BP
under this Agreement, (ii) commence





                                      -54-
<PAGE>   60
production of Acetic Acid using Methanol other than that which is provided by
BP hereunder, at which time title to any Acetic Acid or Unit Product produced
shall not automatically vest in BP as set forth in Article 7 hereof, and (iii)
sell Acetic Acid or Unit Product produced following a Declaration of BP Default
to third parties until such time as BP complies with its obligations hereunder.
Upon a Declaration of BP Default pursuant to clause (iv) of the definition of
"BP Event of Default", the Company may, by written notice to BP terminate this
Agreement.

                                   ARTICLE 28

                            NOTICE OF CERTAIN EVENTS

         28.1   In the event that the Company has failed to make payment of any
part of principal or interest on any of its indebtedness for borrowed money with
an outstanding balance of *** U.S.  or more when same shall have become due and
payable and such failure has not been waived by the holder(s) of such
Indebtedness, the Company agrees to give written notice thereof to BP within
seven (7) days of such failure. In such event, the Company shall discuss with BP
such failure to make any such payment and the effects thereof on the operations
of the Company and afford BP a reasonable opportunity for a reasonable period of
time under the existing circumstances to assist the Company in resolving any
financial difficulties the Company might have.

         28.2   In the event the Company enters serious negotiations with a
third party with respect to the sale or transfer of the Unit (whether directly
or indirectly) or as part of the sale or exchange of all or substantially all
of the assets of the Company, the sale or exchange of a majority or more of the
outstanding voting securities of the Company in a transaction requiring
approval by the Company, the merger or consolidation of the Company with or
into another corporation or





                                      -55-
<PAGE>   61
otherwise, the Company agrees to inform BP of such negotiations as soon as the
Company is permitted to so inform BP by such third party or by applicable law.

         28.3   In the event that the Company receives notice that the holders
of a majority of the outstanding voting securities of the Company have entered
serious negotiations to sell, exchange or otherwise transfer such voting
securities in a transaction not requiring approval of the Company or its
security holders as such, the Company agrees to inform BP of such negotiations
as soon as the Company is permitted to so inform BP by such holders or by
applicable law.

                                   ARTICLE 29

                                    SURVIVAL

         29.1   The representations, warranties, covenants and agreements
contained in Article 30 hereof, together with all indemnity and payment
obligations of any party hereto owing to the other party on the date of
termination hereof or arising thereafter based on events or occurrences prior
to the termination of this Agreement shall survive such termination and for the
period of the applicable statute of limitations (or, if there is no such
statute, for the longest period permitted by law) with respect to such
obligations.

                                   ARTICLE 30

                                INDEMNIFICATION

         30.1   otherwise provided herein, the Company, from and after the
Effective Date, shall indemnify and hold BP harmless from and against any and
all Damages suffered or incurred by BP on account of or arising from or related
to the breach of, or the failure to perform or satisfy any of, the
representations, warranties, covenants or agreements made by the Company in or
under this





                                      -56-
<PAGE>   62
Agreement, or any liability to any party whether incurred under statute or in
tort arising directly or indirectly from the operations carried on by or on
behalf of the Company at or in connection with the Plant or arising out of
Spills or Releases Requiring Response Action (whether occurring before or after
the termination of this Agreement), unless such Spills or Releases Requiring
Response Action are attributable to the acts, omissions or default of BP.

         30.2   Except as otherwise provided herein, BP, from and after the
Effective Date, shall indemnify and hold the Company harmless from and against
any and all Damages suffered or incurred by the Company on account of or
arising from or related to the breach of, or the failure to perform or satisfy
any of, the representations, warranties, covenants or agreements made by BP in
or under this Agreement, or any liability to any party whether incurred under
statute or in tort arising directly or indirectly from the actions of BP
carried out at or in connection with the Plant excepting any Damages arising
out of Spills or Releases Requiring Response Action occurring during the
Initial Term or the First or Second Additional Terms unless such Spills or
Releases Requiring Response Action are attributable to the acts, omissions or
default of BP.

         30.3   BP and the Company each agree that promptly after any of its
officers becomes aware of the discovery of facts giving rise to a claim by it
for indemnification hereunder ("Claim"), such party will provide notice thereof
in writing to the other party.  The failure of either party to so notify the
other party of a Claim, where such failure results in insufficient time being
available to permit the party receiving the notice or its counsel to defend
against such Claim, shall relieve the other party from any liability in respect
of such Claim which it may have otherwise had, but shall not relieve such party
from any liability it may have hereunder. For purposes of this Section 30.3,
receipt by a party of notice of any demand, assertion, claim, action or
proceeding (judicial, administrative or otherwise) by or from any person or
entity (other than the other party to this Agreement) or





                                      -57-
<PAGE>   63
governmental authority ("Third Party Action") which may give rise to a Claim on
behalf of such party shall constitute the discovery of facts giving rise to a
Claim by it and shall require prompt notice of the receipt of such matter as
provided in the first sentence of this Section 30.3.  Any notice pursuant to
this Section 30.3 shall set forth all information respecting the Claim and the
Third Party Action, if any, as such party shall then have and shall contain a
statement to the effect that the party giving the notice is making a Claim
pursuant to and formal demand for indemnification under this Article 30.

         30.4   For purposes of this Article 30, the term "Indemnifying Party,"
as to a particular Claim or Third Party Action shall mean the party having or
which is held to have an obligation to indemnify the other party with respect
to such Claim or Third Party Action pursuant to this Article 30 and the term
"Indemnified Party" as to a particular Claim or Third Party Action shall mean
the party having or which is held to have the right to be indemnified with
respect to such Claim or Third Party Action by the other party pursuant to this
Article 30.

         30.5   Except as otherwise expressly provided herein, Indemnifying
Party shall be entitled at its cost and expense to contest and defend by all
appropriate legal proceedings any Third Party Action with respect to which it
is called upon to indemnify Indemnified Party under the provisions of this
Agreement; provided, however, that with respect to any Claim arising from the
assertion of any Third Party Action, notice of the intention so to contest
shall be delivered by Indemnifying Party to Indemnified Party within twenty
(20) days from the date of mailing by Indemnified Party of notice to
Indemnifying Party of the assertion of the Third Party Action.  Any such
contest with respect to a Third Party Action may be conducted in the name and
on behalf of Indemnifying Party or the Indemnified Party as may be appropriate.
Except as otherwise expressly provided herein, such contest shall be conducted
by attorneys employed by Indemnifying Party, but Indemnified Party





                                      -58-
<PAGE>   64
shall have the right to participate in such proceedings and to be represented
by attorneys of its own choosing at its cost and expense.  If Indemnified Party
joins in any such contest, Indemnified Party shall have full authority to
determine all action to be taken with respect thereto.  If after notice as
provided for herein, Indemnifying Party does not elect to contest any Third
Party Action as provided in this Section 30.5, Indemnifying Party shall be
bound by the result obtained with respect thereto by Indemnified Party and the
Indemnified Party may (but shall have no obligation to) contest any such Third
Party Action or settle or admit liability with respect thereto, all for the
account of the Indemnifying Party. At any time after the commencement of
defense of any such Third Party Action, Indemnifying Party may request
Indemnified Party to agree in writing to the abandonment of such contest or the
payment or compromise by Indemnifying Party of the asserted Third Party Action
whereupon such action shall be taken unless Indemnified Party so determines
that the contest should be continued, and so notifies Indemnifying Party in
writing within fifteen (15) days of such request from Indemnifying Party. In
the event that Indemnified Party determines that the contest should be
continued, Indemnifying Party shall be liable with respect to such Third Party
Action only to the extent of the lesser of (i) the amount which the third party
taking the Third Party Action had agreed to accept in payment or compromise as
of the time Indemnifying Party made its request therefor to Indemnified Party,
or (ii) such amount for which Indemnifying Party may be liable with respect to
such Claim by reason of the provisions hereof.

         30.6   If requested by Indemnifying Party, Indemnified Party agrees to
cooperate with Indemnifying Party and its counsel in contesting any Third Party
Action which Indemnifying Party elects to contest or, if appropriate, in making
any counterclaim against the third party taking the Third Party Action, or any
cross complaint against any other person or entity not a party hereto, but





                                      -59-
<PAGE>   65
Indemnifying Party will reimburse Indemnified Party for any expenses incurred
by it in so cooperating.

         30.7   Indemnified Party agrees to afford Indemnifying Party and its
counsel the opportunity to be present at, and to participate in, conferences
with all persons or entities, including governmental authorities, taking Third
Party Action against Indemnified Party or conference with representatives of or
counsel for such persons or entities.

         30.8   Indemnifying Party shall pay to Indemnified Party, upon demand,
the amount of any Damages to which Indemnified Party may become entitled by
reason of the provisions of this Article 30.

                                   ARTICLE 31

                       ADDITIONAL RIGHTS AND LIABILITIES

         31.1   Nothing contained in this Agreement shall require BP to
reimburse the Company for any costs or expenses or to provide financial
assurances if such costs or expenses are incurred or such financial assurances
are required for reasons attributable to a Company Event of Default.

                                   ARTICLE 32

                                 FORCE MAJEURE

         32.1   In the event of either party being rendered unable, wholly or
in part, by force majeure to carry out its obligations under this Agreement
(other than any obligation to make payment of any amount when due and payable
hereunder), it is agreed that on such party giving notice and reasonably full
particulars of such force majeure in writing or by telegraph to the other party
within a reasonable time after the occurrence of the cause relied on, then the
obligations of the party giving





                                      -60-
<PAGE>   66
such notice, so far as they are affected by such force majeure, shall be
suspended during the continuance of any inability so caused, but for no longer
period, and such cause shall so far as possible be remedied with all reasonable
dispatch.

         32.2   The term "force majeure," as employed herein, shall mean acts
of God, strikes, lockouts or other industrial disturbances, acts of the public
enemy, wars, blockades, embargoes, insurrections, riots, epidemics, landslides,
lightning, earthquakes, fires, storms, floods, high water, washouts, arrests
and restraints of government and people, civil disturbances, explosions,
breakage or accident to machinery, equipment, lines of pipe or property,
freezing of wells, machines, equipment, lines of pipe, or property, partial or
entire failure of any machine, equipment, lines of pipe or other property, the
occurrence of any Spill or Release Requiring Response Action and any
regulatory, civil or criminal action with respect thereto and any other causes,
whether of the kind herein enumerated or otherwise, not reasonably within the
control of the party claiming suspension; such term shall likewise include (i),
in those instances where any party hereto is required to obtain servitudes,
rights-of-way grants, permits or licenses (including permits relating to any
Spill or Release Requiring Response Action) to enable such party to fulfil its
obligations hereunder, the inability of such party to acquire, or delays on the
part of such party in acquiring, at reasonable cost and after the exercise of
reasonable diligence, such servitudes, rights-of-way grants, permits or
licenses, (ii), in those instances where any party hereto is required to
furnish materials and supplies or is required to secure permits or permissions
from any governmental agency to enable such party to fulfill its obligations
hereunder, the inability of such party to acquire, or delays on the party of
such party in acquiring, at reasonable cost and after the exercise of
reasonable diligence, such materials and supplies, permits and permissions; and
(iii) the failure of Praxair to deliver to the Company carbon monoxide, blend
gas and hydrogen at the times and in the quantities required by





                                      -61-
<PAGE>   67
the Praxair Product Supply Agreement; provided the Company uses reasonable
diligence to resolve such failure to deliver pursuant to the Praxair Product
Supply Agreement.

         32.3   It is understood and agreed that the settlement of strikes or
lockouts shall be entirely within the discretion of the party having the
difficulty, and that the above requirement that any force majeure shall be
remedied with all reasonable dispatch shall not require the settlement of
strikes or lockouts by acceding to the demands of the opposing party when such
course is inadvisable in the discretion of the party having the difficulty.

         32.4   Notwithstanding the provisions of Section 32.2 hereof, the
failure by either party to perform any of its obligations under this Agreement
shall be deemed not to have been caused by circumstances reasonably outside its
control if such failure results from breakage or accident to machinery,
equipment, lines of pipe or other property or the partial or entire failure
thereof or the necessity to make repairs or alterations thereto which result
from normal wear and tear which could be reasonably anticipated by a reasonably
prudent operator or in circumstances where a reasonably prudent operator would
have standby equipment or spare parts.

                                   ARTICLE 33

                                  ASSIGNMENTS

         33.1   Except in a transaction pursuant to which all or substantially
all of the assets of the Plant are sold or exchanged or the Company merges or
consolidates with or into another corporation, and in which the purchaser of
the assets or the other party to the merger or consolidation is not a
competitor of BP, the Company may not assign its rights hereunder except as
collateral to any third party providing financing to the Company or sell,
assign or transfer the Unit to any person without





                                      -62-
<PAGE>   68
the prior written consent of BP.  A public offering of securities by the
Company shall not be deemed an assignment hereunder.

         33.2   BP may assign its rights or delegate its duties and obligations
hereunder to any person without the consent of the Company provided that:

                 (a)      Such assignee be of sound financial condition and, in
         BP's good faith judgment, able timely to perform BP's obligations
         under this Agreement; and

                 (b)      Within ten (10) days after a request by the Company,
         BP executes a written guarantee of such assignee's timely performance
         of BP's obligations hereunder, containing the provisions usually and
         customarily contained in guarantees of financial performance in the
         United States.

         33.3   Notwithstanding any assignment of any of its rights or a
delegation of any of its duties by BP under this Agreement, whether permitted
hereby or otherwise, BP shall continue to be responsible for its obligations
hereunder, and does hereby unconditionally and absolutely guarantee the timely
payment of all sums due, and the timely performance of all obligations, by any
assignee hereunder. On default by any such assignee, the Company or the holder
of a collateral assignment of this Agreement may, at its option, proceed
directly and at once against BP to enforce BP's obligations hereunder, and
exercise all remedies available hereunder, without notice to such assignee or
the necessity for proceeding or taking any action against such assignee.

         33.4   Any attempted assignment or delegation by either party hereto
not otherwise permitted hereby which is made without the prior written consent
of the other party shall be ineffective and void for all purposes.





                                      -63-
<PAGE>   69
                                   ARTICLE 34

                                    GENERAL

         34.1   Noncompetition Agreement. The Company covenants and agrees with
BP that, during the First and Second Additional Terms and so long as no BP
Event of Default has occurred and is continuing, the Company will not produce
or sell acetic acid other than pursuant to this Agreement without BP's consent,
which will not be unreasonably withheld; provided, that (i) the disposition of
waste acid pursuant to mutually agreed procedures, and (ii) the transfer of
acetic acid to the acrylonitrile production unit located at the Plant for the
Company's internal use shall be permitted and shall not constitute violations
of this Agreement.

         34.2   Taxes.

                 (a)      Upon receipt of invoice therefor, BP shall remit to
         the Company all Company Taxes.

                 (b)      The parties recognize that, during the term of this
         Agreement, major changes may occur in the system of federal, state and
         local taxation at the location of the Unit, which may materially alter
         the existing federal, state and local property, energy, franchise,
         income and sales tax systems presently in effect.  In the event of
         such alteration, the parties agree to equitably adjust all formulas in
         this Agreement to reflect such changes.

                 (c)      BP shall be responsible for and pay any state or
         local property tax attributable to the Acetic Acid and Unit Product
         produced hereunder and to the Methanol provided by BP hereunder, which
         taxes shall be considered part of BP Cost of Sales.

         34.3   Notices.  Except as otherwise specifically provided, any notice
provided for by this Agreement and any other notice, demand or communication
which any party may wish to send to another shall be in writing and either
delivered in person or sent by registered or certified United





                                      -64-
<PAGE>   70
States mail, first-class postage prepaid, return receipt requested, in a
properly sealed envelope, and addressed to the party for which such notice,
demand or communication is intended at such party's address as set forth below:

                 (a)      Company:      Sterling Chemicals, Inc.
                                        1200 Smith Street
                                        Houston, Texas 77002
                                        Attention: General Manager, Acetic Acid

                          Copy To:      Sterling Chemicals, Inc.
                                        1200 Smith Street
                                        Houston, Texas 77002
                                        Attention: General Counsel

                 (b)      BP:           BP Chemicals Inc.
                                        4440 Warrensville Center Road
                                        Warrensville Heights, Ohio 44128-2837
                                        Attention: Vice President, Acetyls



                          Copy To:      BP Chemicals Inc.
                                        1 Second Avenue South
                                        Texas City, Texas 77590
                                        Attention: Product Manager, Acetyls
                                             and

                          Copy To:      BP America Inc.
                                        200 Public Square
                                        Cleveland, Ohio 44114-2373
                                        Attention: Mr. R.G. Raymond
                                                   Corporate Counsel

         Any address or name specified above may be changed by a notice given
by the addressee to the other parties in accordance with this Section 34.3. Any
notice, demand or other communication shall be deemed given and effective as of
the date of delivery in person or upon receipt as set forth on the return
receipt.  The inability to deliver because of changed address of which no
notice was given, or the rejection or other refusal to accept any notice,
demand or communication, shall be





                                      -65-
<PAGE>   71
deemed to be the receipt of the notice, demand or communication as of the date
of such inability to delivery or the rejection or refusal to accept.

         34.4   Controlling Law.  All questions concerning the validity,
operation and interpretation of this Agreement and the performance of the
obligations imposed upon the parties hereunder shall be governed by the laws of
the State of Texas.

         34.5   Heading.  The headings and titles to the Articles of this
Agreement are inserted for convenience only and shall not be deemed a part
hereof or affect the construction or interpretation of any provision hereof.

         34.6   Modifications and Waivers.  No intermination, cancellation,
modification, amendment, deletion, addition or other change in this Agreement
or any provision hereof, or waiver of any right or remedy herein provided,
shall be effective for any purpose unless specifically set forth in writing
signed by the party or parties to be bound thereby.  The waiver of any right or
remedy in respect of any occurrence or event on the occasion shall not be
deemed a waiver of such right or remedy in respect of such occurrence or event
on any other occasion.

         34.7   Entire Agreement.  This Agreement, including the other
instruments herein provided for or referred to, and that certain letter dated
as of the date of execution of this Agreement between BP and the Company
regarding the purchase of inventory supersede all other agreements, oral or
written, heretofore made with respect to the subject matter hereof and the
transactions contemplated hereby, and contain the entire agreement of the
parties.

         34.8   Severability. Any provisions hereof prohibited by or unlawful
or unenforceable under any applicable law of any jurisdiction shall be
ineffective as to such jurisdiction, without affecting any other provision of
this Agreement, or shall be deemed to be severed or modified to conform with
such law, and the remaining provisions of this Agreement shall remain in force,
provided that the





                                      -66-
<PAGE>   72
purpose of this Agreement can be effected. To the full extent, however, that
the provisions of such applicable law may be waived, they are hereby waived, to
the end that this Agreement is deemed to be a valid and binding agreement
enforceable in accordance with its terms.

         34.9   Counterparts.  This Agreement may be executed in multiple
counterparts, each of which shall be deemed to be an original, and all of such
counterparts together shall constitute but one and the same instrument.

         34.10   Binding on Successors.  This Agreement shall be binding upon,
and shall inure to the benefit of, the parties hereto and their respective
successors and permitted assigns.

         34.11   Public Statements.  The parties hereto agree to consult with
one another prior to issuing any public announcement or statement with respect
to the transactions contemplated herein.

         34.12   No Partnership or Agency.  This Agreement shall not be
construed to create a partnership, joint venture, association or other entity
or business organization or to create a principal-agent relationship between
the Company and BP.

         34.13   No Transfer of Title.  BP expressly does not by the terms of
this Agreement sell, transfer or assign to the Company any title or interest in
the Unit.  The Company expressly does not by the terms of this Agreement sell,
transfer or assign to BP any title or interest in the Unit or any of the
Company's other assets or properties other than Acetic Acid when and as
provided herein.

         34.14   Wire Transfer, Etc.  All sums and amounts payable or to be
payable pursuant to this Agreement shall be payable in immediately available
funds and in coin or currency of the United States of America that, at the time
of payment, is legal tender for the payment of public and private debts in the
United States of America and shall be made by wire transfer of immediately
available funds to such bank and/or account in the continental United States
for the account of the payee as from time to time the payee shall have directed
to the payor in writing, or, if no such direction shall





                                      -67-
<PAGE>   73
have been given, by check to the payee in the manner and at the address set
forth above.  Whenever in this Agreement BP is required to pay or reimburse the
Company upon receipt of invoice or otherwise when no due date for payment is
specifically provided, payment shall be due ten (10) Business Days after
receipt of invoice or other statement, and shall be made in the manner set
forth above.

         34.15   No Known Disputes.  As of the date of this Amended and
Restated Production Agreement, the Company and BP agree, acknowledge and
confirm (i) that there are no known disputes pending between them arising out
of or relating to this Agreement which are unresolved and (ii) that the
Agreement, as amended and restated hereby, remains in full force and effect on
and as of the date hereof.

         IN WITNESS WHEREOF, the parties have executed this Agreement on the
date first above written, but effective as of the Effective Date.

                                  BP CHEMICALS INC.,
                                  an Ohio corporation



                                  By: /s/ G.C. Greve                          
                                     -----------------------------------------
                                      G. C. Greve
                                      President

                                  Endorsed
                                      By: /s/ G.R. Hunt                       
                                         -------------------------------------
                                         G. R. Hunt
                                         Business General Manager, Acetyls
                                         BP Chemicals Ltd.

                                      STERLING CHEMICALS, INC.,
                                      a Delaware corporation


                                      By: /s/ Robert W. Roten                 
                                         -------------------------------------
                                          Robert W. Roten
                                          President





                                      -68-
<PAGE>   74
                                   EXHIBIT A

                                BP Cost of Sales

Cost of Sales shall include, but not be limited to, the following items of
direct expenditure:

SALARIES, ASSOCIATED DIRECT EMPLOYMENT AND TRAVEL AND ENTERTAINMENT COSTS

For each of the following positions, the actual percentage of direct man-years
dedicated to the Texas City acetic acid operations shall be estimated on an
annual basis.  (The 1994 man-year allocations are shown in parenthesis.)
Salaries associated to direct employment costs (excluding incentive schemes)
and travel and entertainment for each individual shall be included based on
these percentages.

<TABLE>
<CAPTION>
Position                                               Location
- --------                                               --------
<S>                                                <C>
 ***                                               Warrensville, OH
                        

 ***                                               Warrensville, OH

 ***                                               Texas City, TX

 ***                    
                             
                                                   Texas City, TX
                                                        Local
                                                        Local

 ***                                               Warrensville, OH
                              
</TABLE>

OFFICE ACCOMMODATION, EQUIPMENT, AND DIRECT BUSINESS SUPPORT COSTS

Business Support costs shall be allocated to Cost of Sales, based on the ratio
of direct man-years (from the list above) to the total comparable man-years
(i.e. V.P., Business and Product Managers, Sales Managers, Sales Representatives
and Customer Service personnel) included in the Acetyls, Solvents and
Petrochemicals Department. (For 1994, *** )  The percentage thus determined
shall be applied to the total actual Acetyls, Solvents and Petrochemicals
Department cost for business support areas, including, but not limited to, those
listed below:





                                      -1-
<PAGE>   75
                                      ***

DIRECT EXPORTING COSTS

Agents' Commissions (e.g. Marubeni, Japan 3%)
Commissions (Internal BP) on sales to South/Central America
Duties, Taxes as applicable
Direct Costs of Independent Surveyors


The above costs to be advised on a provisional quarterly basis, together with
any identified additional costs.  Formal costs to be advised on an annual basis
for profit sharing calculations.





                                      -2-
<PAGE>   76
                                   EXHIBIT B

                                  FIXED COSTS



                                      ***




                                      -1-
<PAGE>   77
                                   EXHIBIT C

                             Methanol Specification


                                      ***


                                      -1-
<PAGE>   78
                                   EXHIBIT D

                           Acetic Acid Specifications


                                      ***


                                      -1-
<PAGE>   79
                                   EXHIBIT E

                   Legal Description of the Land of the Unit





                                      -1-
<PAGE>   80
                                    TRACT 1

                                ACETIC ACID SITE
                          METES AND BOUNDS DESCRIPTION
                    77,729 S.F. OUT OF A 237.0539 ACRE TRACT
                            NORMAN HURD SURVEY, A-77
                          SYLVESTER BOWEN SURVEY, A-24
                            JOHN GRANT SURVEY, A-72
                             JAMES B. WELLS SURVEY
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 77,729 square feet of land out of a 237.0539 acre tract out of
the Norman Hurd Survey, A-77, Sylvester Bowen Survey, A-24, John Grant Survey,
A-72, James B. Wells Survey, Texas City, Galveston County, Texas and being more
particularly described by metes and bounds as follows:

Commencing at a set 5/8" iron rod located in the south right-of-way line of 4th
Avenue South (70' wide) at its intersection with the east right-of-way line of
6th Street (100' wide);  Thence S. 00 degrees 23' 20" E - 949.19'; Thence N
89 degrees 36' 40" E - 1,069.61' to the POINT OF BEGINNING of the herein
described parcel;

THENCE  N    0 degrees  23'   20"  W   -   439.50'  to a point;

THENCE  N   89 degrees  36'   40"  E   -   284.60'  to a point;

THENCE  S    0 degrees  23'   20"  E   -   141.50'  to a point;

THENCE  S   89 degrees  36'   40"  W   -   198.90'  to a point;
               
THENCE  S    0 degrees  23'   20"  E   -   298.00'  to a point;

THENCE  S   89 degrees  36'   40"  W   -   125.70'  to the POINT OF BEGINNING 
and containing 77,729 square feet.

Compiled By:
Prejean & Company Inc.,
Surveying and Mapping

July 30, 1986





                                     Page 1
<PAGE>   81
                                    TRACT 2

                                  SYNGAS UNIT
                          METES AND BOUNDS DESCRIPTION
                    96,295 S.F. OUT OF A 237.0539 ACRE TRACT
                      OUT OF THE NORMAN HURD SURVEY, A-77
                          SYLVESTER BOWEN SURVEY, A-24
                            JOHN GRANT SURVEY, A-72
                             JAMES B. WELLS SURVEY
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 96,295 square feet of land out of a 237.0539 acre tract out of
the Norman Hurd Survey, A-77, Sylvester Bowen Survey, A-24, John Grant Survey,
A-72, James B. Wells Survey, Texas City, Galveston County, Texas and being more
particularly described by metes and bounds as follows:

Commencing at a set 5/8" iron rod located in the south right-of-way line of 4th
Avenue South (70' wide) at its intersection with the east right-of-way line of
6th Street (100' wide);  Thence S. 00 degrees 23' 20" E - 112.22'; Thence N
89 degrees 36' 40" E - 1,523.94' to the POINT OF BEGINNING of the herein
described parcel;

THENCE  S   89 degrees  13'   04"  E   -   228.21'  to a point for corner;

THENCE  S   01 degrees  28'   23"  E   -   252.06'  to a point for corner;

THENCE  S   88 degrees  44'   19"  E   -   112.24'  to a point for corner;

THENCE  S   02 degrees  12'   19"  W   -   113.22'  to a point for corner;

THENCE  S   88 degrees  26'   45"  W   -   197.05'  to a point for corner;

THENCE  N   01 degrees  56'   59"  E   -    19.03'  to a point for corner;

THENCE  S   89 degrees  19'   25"  W   -   142.19'  to a point for corner;

THENCE  N   00 degrees  38'   23"  W   -   358.61'  to the POINT OF BEGINNING 
and containing 96,295 square feet (2.2106 acres) of land, more or less.

Compiled By:

PREJEAN & COMPANY, INC.
Surveying/mapping

July 30, 1986





                                     Page 2
<PAGE>   82
                                    TRACT 3

                             FLARE FOR SYNGAS UNIT
                          METES AND BOUNDS DESCRIPTION
                     796 S.F. OUT OF A 237.0539 ACRE TRACT
                      OUT OF THE NORMAN HURD SURVEY, A-77
                          SYLVESTER BOWEN SURVEY, A-24
                            JOHN GRANT SURVEY, A-72
                             JAMES B. WELLS SURVEY
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 796 square feet of land out of a 237.0539 acre tract out of
the Norman Hurd Survey, A-77, Sylvester Bowen Survey, A-24, John Grant Survey,
A-72, James B. Wells Survey, Texas City, Galveston County, Texas and being more
particularly described by metes and bounds as follows:

Commencing at a set 5/8" iron rod located in the south right-of-way line of 4th
Avenue South (70' wide) at its intersection with the east right-of-way line of
6th Street (100' wide);  Thence S. 00 degrees 23' 20" E - 467.50'; Thence N
89 degrees 36' 40" E - 1,461.50' to the POINT OF BEGINNING of the herein
described parcel;

THENCE  N   00 degrees  23'   20"  W   -    32.50'  to a point for corner;

THENCE  N   89 degrees  36'   40"  E   -    24.50'  to a point for corner;

THENCE  S   00 degrees  23'   20"  E   -    32.50'  to a point for corner;

THENCE  S   89 degrees  36'   40"  W   -    24.50'  to the POINT OF BEGINNING
and containing 796 square feet of land, more or less.

Compiled By:

PREJEAN & COMPANY, INC.
Surveying/mapping

July 30, 1986





                                     Page 3
<PAGE>   83
                                    TRACT 4

                                 DAY TANKS SITE
                          METES AND BOUNDS DESCRIPTION
                    4,773 S.F. OUT OF A 237.0539 ACRE TRACT
                      OUT OF THE NORMAN HURD SURVEY, A-77
                          SYLVESTER BOWEN SURVEY, A-24
                            JOHN GRANT SURVEY, A-72
                             JAMES B. WELLS SURVEY
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 4,773 square feet of land out of a 237.0539 acre tract out of
the Norman Hurd Survey, A-77, Sylvester Bowen Survey, A-24, John Grant Survey,
A-72, James B. Wells Survey, Texas City, Galveston County, Texas and being more
particularly described by metes and bounds as follows:

Commencing at a set 5/8" iron rod located in the south right-of-way line of 4th
Avenue South (70' wide) at its intersection with the east right-of-way line of
6th Street (100' wide);  Thence S. 00 degrees 23' 20" E - 470.50'; Thence N
89 degrees 36' 40" E - 1,218.30' to the POINT OF BEGINNING of the herein
described parcel;

THENCE  N   00 degrees  23'   20"  W   -    64.50'  to a point for corner;

THENCE  N   89 degrees  36'   40"  E   -    74.00'  to a point for corner;

THENCE  S   00 degrees  23'   20"  E   -    64.50'  to a point for corner;

THENCE  S   89 degrees  36'   40"  W   -    74.00'  to the POINT OF BEGINNING
and containing 4,773 square feet of land, more or less.

Compiled By:

PREJEAN & COMPANY, INC.
Surveying/mapping

July 30, 1986





                                     Page 4
<PAGE>   84
                                    TRACT 5

                             ACETIC ACID TANK SITE
                          METES AND BOUNDS DESCRIPTION
                        56,220 SQUARE FEET GROUND LEASE
                            JOHN GRANT SURVEY, A-72
                          SYLVESTER BOWEN SURVEY, A-24
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 56,220 square feet for ground lease out of the John Grant
Survey, A-72 and the Sylvester Bowen Survey, A-24 in Texas City, Galveston
County, Texas and being more particularly described by metes and bounds as
follows:

Commencing at a set 5/8" iron rod marking the southeast corner of that certain
22.71 acres of land described in a deed dated 8-19-1969 from Texas City
Terminal Railway Company to Monsanto Company filed at Volume 2051, Page 654
Galveston County Deed Records, thence N 00' 51' 00" W - 389.07', along the east
line of said 22.71 acre tract being westerly of, parallel with and 50'
perpendicular distance from the centerline of said flood wall, to a set 5/8"
iron rod for the southerly southeast corner of said 22.71 acre tract, thence N
20 degrees 52 degrees 05" W - 209.65', continuing along the east line of said
22.71 acre tract, to a set 5/8" iron rod for angle point, thence N 89 degrees
46' 57" E - 80.15', along an interior south line of said 22.71 acre tract, to a
set 5/8" iron rod for corner, thence N 20 degrees 52' 05" W - 82.13', along the
east line of said flood wall, to a set 5/8" iron rod for corner, thence N
00 degrees 50' 20" E - 204.69', along the east line of said 22.71 acre tract
being easterly of, parallel with and 25' perpendicular distance from the
centerline of said flood wall, to a point for corner, thence N 89 degrees 09'
40" W - 86.82', to the POINT OF BEGINNING of the herein described tract:

THENCE N 01 degrees 17' 29" E - 143.99', to a point for corner;

THENCE S 75 degrees 20' 45" W - 306.41', to a point for corner;

THENCE S 00 degrees 36' 19" E - 242.45', to a point for corner;

THENCE N 89 degrees 33' 49" E - 137.79', to a point for corner;

THENCE N 16 degrees 37' 18" W - 126.42', to a point for corner;

THENCE N 74 degrees 06' 25" E - 196.52', to the POINT OF BEGINNING and
containing 56.220 square feet for ground lease more or less.

Compiled By:
Prejean and Company, Inc.
Surveying and Mapping
July 30, 1986





                                     Page 5
<PAGE>   85
                                    TRACT 6

                               METHANOL TANK SITE
                          METES AND BOUNDS DESCRIPTION
                     72,362 S.F. OUT OF 237.0639 ACRE TRACT
                      OUT OF THE NORMAN HURD SURVEY, A-77
                          SYLVESTER BOWEN SURVEY, A-24
                            JOHN GRANT SURVEY, A-72
                             JAMES B. WELLS SURVEY
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 72.362 square feet of land out of a 237.0539 acre tract out of
the Norman Hurd Survey, A-77, Sylvester Bowen Survey, A-24, John Grant Survey,
A-72 and James B. Wells Survey, Texas City, Galveston County, Texas and being
more particularly described by metes and bounds as follows:

Commencing at a set 5/8" iron rod located in the south right-of-way line of 4th
Avenue South (70' wide) at its intersection with the east right-of-way line of
6th Street (100' wide); Thence S 00 degrees 23' 20" E - 438.00'; Thence N
89 degrees 36' 40" E - 30.00' to the POINT OF BEGINNING of the herein described
parcel;

THENCE N 00 degrees 23' 20" W - 373.00' to a point for corner;

THENCE N 89 degrees 36' 40" E - 194.00' to a point for corner;

THENCE S 00 degrees 23' 20" E - 373.00' to a point for corner;

THENCE S 89 degrees 36' 40" W - 194.00' to the POINT OF BEGINNING and containing
72.362 square feet of land, more or less.

Compiled By:

PREJEAN & COMPANY, INC.
Surveying/mapping

July 30, 1986





                                     Page 6
<PAGE>   86
                                    TRACT 7

                              CARBON DIOXIDE SITE
                          METES AND BOUNDS DESCRIPTION
                     10,360 S.F. OUT OF 237.0639 ACRE TRACT
                       OUT OF HE NORMAN HURD SURVEY, A-77
                          SYLVESTER BOWEN SURVEY, A-24
                            JOHN GRANT SURVEY, A-72
                             JAMES B. WELLS SURVEY
                      TEXAS CITY, GALVESTON COUNTY, TEXAS

All that certain 10,360 square feet of land out of a 237.0539 acre tract out of
the Norman Hurd Survey, A-77, Sylvester Bowen Survey, A-24, John Grant Survey,
A-72 and James B. Wells Survey, Texas City, Galveston County, Texas and being
more particularly described by metes and bounds as follows:

Commencing at a set 5/8" iron rod located in the south right-of-way line of 4th
Avenue South (70' wide) at its intersection with the east right-of-way line of
6th Street (100' wide); Thence N 89 degrees 36' 40" E - 1,882.50'; Thence N
00 degrees 23' 20" W - 261.00' to the POINT OF BEGINNING of the herein described
parcel;

THENCE N 00 degrees 23' 20" W - 285.00' to a point for corner;

THENCE N 89 degrees 36' 40" E - 27.00' to a point for corner;

THENCE S 00 degrees 23' 20" E - 220.00' to a point for corner;

THENCE N 89 degrees 36' 40" E - 41.00' to a point for corner;

THENCE S 00 degrees 23' 20" E - 65.00' to a point for corner;

THENCE S 89 degrees 36' 40" W - 68.00' to the POINT OF BEGINNING and containing
10.360 square feet of land, more or less.

Compiled By:

PREJEAN & COMPANY, INC.
Surveying/mapping

July 30, 1986





                                     Page 7
<PAGE>   87
                                   EXHIBIT F

                           VARIABLE COSTS-ACETIC ACID

                                      ***


                                     Page 1
<PAGE>   88
                                   EXHIBIT G

                                   Insurance





                                      ***





                                     Page 1
<PAGE>   89


                                   EXHIBIT H


                     SAMPLE PROFIT CALCULATIONS AFTER 2006





                                    Page 1
<PAGE>   90
                EXAMPLE POST-2006 PROFIT CALCULATION AND PAYMENT

                                      ***
<PAGE>   91

                                   EXHIBIT I

                                BLEND GAS CREDIT

                                      ***



                                     -1-

<PAGE>   1
                                                                    EXHIBIT 10.4

                                                    *** OMITTED INFORMATION
                                                    DENOTED BY ASTERISKS (***)
                                                    HAS BEEN SEPARATELY FILED
                                                    WITH THE COMMISSION AND
                                                    IS SUBJECT TO A CONFIDENTIAL
                                                    TREATMENT REQUEST***
================================================================================

RGR                                                        EXECUTION COPY
3/16/98


                            JOINT VENTURE AGREEMENT

                                    BETWEEN

                            STERLING CHEMICALS, INC.

                                      AND

                               BP CHEMICALS INC.


         THIS JOINT VENTURE AGREEMENT executed this 31st day of March, 1998,
and effective as of the Effective Date, is made by and between STERLING
CHEMICALS, INC., a corporation headquartered in Houston, Texas and duly
organized and existing under the laws of the state of Delaware, United States
of America (hereinafter referred to as "Sterling"), and BP CHEMICALS INC., a
corporation headquartered in Cleveland, Ohio and duly organized and existing
under the laws of the state of Ohio, United States of America (hereinafter
referred to as  "BP").  RECITALS:





                                      -1-
<PAGE>   2
                                                                    EXHIBIT 10.4

                                                    *** OMITTED INFORMATION
                                                    DENOTED BY ASTERISKS (***)
                                                    HAS BEEN SEPARATELY FILED
                                                    WITH THE COMMISSION AND
                                                    IS SUBJECT TO A CONFIDENTIAL
                                                    TREATMENT REQUEST***
================================================================================

RGR                                                       EXECUTION COPY
3/16/98


         WHEREAS, Sterling and BP desire to enter into a marketing joint
venture as hereinafter described for the sale and distribution of acrylonitrile
in and to the Joint Venture Territory (as hereinafter defined); and

         WHEREAS, Sterling and BP desire to enter into this Agreement to
establish their respective interests, rights and obligations in connection with
such joint venture;

         NOW, THEREFORE, Sterling and BP, intending to be legally bound hereby,
do mutually covenant and agree as follows:

                            Article 1.  Definitions

         1.      Definitions.     For purposes of this Agreement, the following
terms shall have the meanings set forth below:

         1.1     "Acrylonitrile" shall mean acrylonitrile  meeting the
Specifications.





                                      -2-
<PAGE>   3

         1.2     "Agreement" shall mean this Joint Venture Agreement, including
all Exhibits attached hereto which are incorporated herein, as the same may be
modified or amended by the Parties in accordance with the provisions hereof.

         1.3     "BP Floor" as defined in Section 5.1 hereof.

         1.4     "BRV" as defined in Section 5.1 hereof.

         1.5     "BRV Ratio" as defined in Article 4 hereof.

         1.6     "Certificate of Formation" as defined in Section 2.2 hereof.

         1.7     "Company" shall mean the Delaware limited liability company
established by the Parties pursuant to the provisions of Section 2.2 hereof for
the purpose of carrying out the Joint Venture.

         1.8     "Confidential Information" as defined in Section 12.1 hereof.

         1.9     "Default" as defined in Section 10.1 hereof;

         1.10    "Delivery Differences" as defined in Section 3.5 hereof.

         1.11    "Effective Date" shall mean March 31,1998.

         1.12    "Excess Volume" as defined in Section 5.3 hereof.

         1.13    "Existing Contracts" as defined in Section 3.4 hereof.

         1.14    "Final Price" as defined in Section 3.6 hereof.

         1.15    "Fixed Costs" as defined in Section 3.6 hereof.

         1.16    "Force Majeure" as defined in Section 11.2 hereof.

         1.17    "Joint Venture" shall mean the Acrylonitrile joint venture
arrangement between the Parties established pursuant to the provisions of this
Agreement.

         1.18    "Joint Venture Territory" shall mean ***.





                                      -3-
<PAGE>   4
         1.19    "LLC Agreement" as defined in Section 2.2.1 hereof.

         1.20    "Marketing Plan" as defined in Section 3.1 hereof.

         1.21    "Operating Costs" as defined in Section 3.6 hereof.

         1.22    "Parties" or "Party" shall mean, respectively, Sterling and
BP, or either of them, and shall include their respective successors in
interest.

         1.23    "Production Agreement" as defined in Section 5.1 hereof.

         1.24    "Provisional Price" as defined in Section 3.6 hereof.

         1.25    "Purchase Contracts" as defined in Section 3.4 hereof.

         1.26    "Revenue-Streamed Volume" as defined in Section 3.4.3 hereof.

         1.27    "Sales Contracts" as defined in Section 3.4 hereof.

         1.28    "Specifications" shall mean the acrylonitrile specifications
set forth in attached Exhibit B.

         1.29    "Sterling Floor" as defined in Section 5.1 hereof.

         1.30    "Support Services" as defined in Article 4 hereof.

         1.31    "Support Services Agreement" as defined in Article 4 hereof.

         1.32    "Terminal Contracts" as defined in Section 3.4 hereof.

         1.33    "Texas City Plant" as defined in Section 5.4 hereof.

                       Article 2.  Purpose and Structure

         2.1     Joint Venture Purpose.  Subject to and under the terms and
conditions set forth in this Agreement, the Parties hereby establish the Joint
Venture, with effect as of the Effective Date, to sell and distribute
Acrylonitrile in and to the Joint Venture Territory pursuant to the provisions
of this Agreement.





                                      -4-
<PAGE>   5
         2.2     Joint Venture Structure.  Promptly after the Effective Date,
and subject to the Parties obtaining any necessary government approvals, the
Parties shall establish, pursuant to the provisions of the Certificate of
Formation set forth in attached Exhibit C-1 ("Certificate of Formation"), a
limited liability company under the laws of the State of Delaware to carry out
the Joint Venture ("Company").

                 2.2.1    Sterling and BP shall become the sole members of the
                 Company, *** pursuant to the provisions of the limited
                 liability company agreement set forth in attached Exhibit C-2
                 ("LLC Agreement").  Voting rights, capital contributions,
                 earnings distribution and allocation of Company costs shall be
                 as set forth in the LLC Agreement.

                 2.2.2    The business purposes of the Company shall be as set
                 forth in the Certificate of Formation and the LLC Agreement
                 and shall not be changed nor shall the business of the Company
                 be extended, unless the members of the Company agree to do so
                 pursuant to duly approved amendments to the Certificate of
                 Formation and the LLC Agreement.

                 2.2.3    Although the structure of the Company shall initially
                 be a limited liability company, the Parties recognize that in
                 time there may be advantages in adopting additional or
                 alternative company structures under the laws of the State of
                 Delaware or such other jurisdiction as the Parties mutually
                 agree to in writing.  Accordingly, the Parties shall undertake
                 a review of the Company structure from time to time for





                                      -5-
<PAGE>   6
                 the purpose of considering the desirability and advantages of
                 any alternative structures as may be then available and
                 determining whether, and if so what, changes in the Company
                 structure may be appropriate.

         2.3     Company Name.  The name of the Company shall be "ANEXCO, LLC"
or such other name as the members of the Company and the appropriate
governmental authorities may approve.

         2.4     Transfer of Company Interests.  Neither Party at any time
during the term of this Agreement shall sell or otherwise transfer its limited
liability company interests in the Company except in accordance with the
provisions of the LLC Agreement.

                     Article 3 - Marketing Responsibilities

         3.1     Marketing Plan.  The Company shall develop and define for
review and approval at least annually by the Board and, as so approved, shall
implement a comprehensive business plan and strategy for the sale and
distribution of Acrylonitrile in the Joint Venture Territory, consistent with
the provisions of the Certificate of Formation, the LLC Agreement and this
Agreement ("Marketing Plan").  The Board shall revise the Marketing Plan as
needed to achieve the overall business results desired by the Company.  The
Marketing Plan shall allow the Company to enter into advantageous exchange
agreements within the Joint Venture Territory.

         3.2     ***

         3.3     Purchase and Resale.  The Company, as a separate and
independent contracting Party, shall purchase Acrylonitrile from the Parties
(or their foreign sales companies or other corporate affiliates), take title
thereto and resell the Acrylonitrile to the Company's customers in the Joint





                                      -6-
<PAGE>   7
Venture Territory on its own behalf and for its own account, all subject to the
provisions of the Marketing Plan.

         3.4     Existing Contracts.  The Parties shall, as of the Effective
Date, assign to the Company all acrylonitrile sales and sales agency contracts
("Sales Contracts") and all storage and terminal contracts with third parties
("Terminal Contracts" and together with the Sales Contracts, collectively
referred to as the "Existing Contracts") that they have as of the Effective
Date to the extent that they relate to the sale of Acrylonitrile to or the
handling and storage of Acrylonitrile in the Joint Venture Territory ***.  No
existing third-party contract under which either Party is obligated to purchase
acrylonitrile ("Purchase Contracts") shall be assigned to the Company, but the
volume of Acrylonitrile which each of the Parties is required to purchase under
such Purchase Contracts shall be used in determining each Party's BRV as
provided in Article 5 hereof.

                 3.4.1    ***.

                 3.4.2    ***.

                 3.4.3    The Parties shall ***.

         3.5     Deliveries.  All shipments of Acrylonitrile to the Company
shall be made FOB the U.S. Gulf Coast deep water port for Acrylonitrile
produced, purchased or otherwise obtained in the U.S., and as the Company and
the shipping Party shall agree for foreign-sourced Acrylonitrile.  Unless the
Company and the Parties otherwise agree, title to and risk of loss of
Acrylonitrile sold by each Party hereunder shall pass at the point and time set
forth in the relevant contract between





                                      -7-
<PAGE>   8
the Company and its customer for the transfer of title and risk of loss.  In
the event that the Company ships any Acrylonitrile to an offshore storage
facility prior to having a customer for such Acrylonitrile, title to and risk
of loss of such Acrylonitrile shall pass from the Party shipping such
Acrylonitrile to the Company at such point and at such time as the Company and
the Parties shall agree.  In the event a Party delivers Acrylonitrile to the
Company at a location outside of the U.S. resulting in a higher or lower
freight cost to the Company (when compared with deliveries from the U.S. Gulf
Coast), such difference ("Delivery Differences") shall be debited or credited,
as the case may be, to such delivering Party as set forth in Section 3.4.3
hereof.

         3.6     Price and Terms.  The Company shall ***

                          Article 4 - Support Services

         Support services for the Company, including, but not limited to,
marketing and sales function and associated support, customer service, marine,
distribution, health, safety, environmental and other technical services,
credit billing and other related services ("Support Services"), shall be
provided directly to the Company by BP or passed through to the Company by BP
from service providers under contract to BP and the costs of the Support
Services shall be shared by BP and Sterling as set forth in attached Exhibit E
("Support Services Agreement").  The Support Services Agreement shall cover the
payment of all out of pocket third party service provider costs and BP's fully
allocated costs, including salaries and benefits, incurred in providing the
Support Services.  Offshore terminalling costs (e.g., JTT terminal) will be
included in the Support Services.  Each calendar month each Party shall pay
one-twelfth of its share of the Company's budgeted costs for





                                      -8-
<PAGE>   9
such Support Services based on ***.  At end of each calendar year, each Party
shall pay its share of the Company's actual Support Service costs ***.

                 Article 5 - Volumes and Base Reference Volumes

         5.1     Base Reference Volumes. ***    Force Majeure shall not apply
to the extent a Party is able to provide substitute Acrylonitrile for the lost
Acrylonitrile in the market at a price no greater than the price at which the
Company is then selling in the Joint Venture Territory.  In the event of Force
Majeure, the BRV for the Party declaring Force Majeure for that year for the
purposes of adjustment for the subsequent year shall be the actual sales which
would have been made to the Company by such Party if the Force Majeure had not
occurred.  For the initial year of the Company (prorated for less than a full
calendar year): ***.

         5.2     Reduced Volume.  If for any reason other than an event of
Force Majeure declared by either of the Parties or by the Company as addressed
herein, ***.  If for reason of Force Majeure the Company is unable in any
fiscal quarter to ***.

         5.3     Excess Volume.  During the course of any calendar year, either
Party may offer volumes of Acrylonitrile in excess of its BRV for that year
("Excess Volume"), and the Company will purchase such volume (if both Parties
offer Excess Volume, ratably in proportion to the Parties' respective BRVs) if
and to the extent it is able to market such Excess Volume during such year at
prices acceptable to the Board.  If there remains any additional Excess Volume
after the ratable purchases from both Parties hereunder, either Party shall be
free to supply up to 100% of such additional Excess Volume that the Company is
able to market during such year at prices acceptable to the Board.





                                      -9-
<PAGE>   10
         5.4     BRV Adjustment. ***.

         5.5     Toll Conversions.  Neither Party shall enter into any new or
extend or increase the volume under any existing agreements with any third
party for the raw material toll conversion of acrylonitrile for export to the
Joint Venture Territory.

         5.6     Volume Imbalances.  Company purchases of Acrylonitrile loaded
for shipment during each calendar quarter shall be provisionally allocated
between the Parties based, as nearly as possible, on each Party's then
applicable BRV Ratio.  At the end of each calendar quarter, each Party's actual
BRV for that quarter shall be reconciled with its provisionally allocated
volume and any difference or imbalance shall be added to the underallocated
Party's BRV and subtracted from the overallocated Party's BRV for the next
calendar quarter, as described in attached Exhibit D, to determine purchases by
the Company from the Parties in such calendar quarter; provided, however, that
such reconciliation of any volume imbalances shall not affect the Parties'
respective BRVs or BRV Ratios for any other purpose under this Agreement.

         5.7     New Purchase Contracts.  After the Effective Date, except as
provided in Section 5.1 hereof, neither Party shall enter into any new Purchase
Contracts relating to the purchase of Acrylonitrile for resale within the Joint
Venture Territory without the consent of the other Party, it being the intent
of the Parties hereto that the Company will execute any such new Purchase
Contracts.





                                      -10-
<PAGE>   11
                        Article 6 - Term and Termination

         6.1     Term.  The initial term of this Agreement shall be from the
Effective Date  through December 31, 2009.  Thereafter, this Agreement shall
continue from year to year unless and until terminated as provided herein.

         6.2     Termination.  Sterling may terminate this Agreement effective
not earlier than December 31, 2009 by giving BP at least one (1) year's prior
written notice of termination.  BP may terminate this Agreement effective not
earlier than December 31, 2009 by giving Sterling at least three (3) years'
prior written notice of termination.  In addition, either Party may terminate
this Agreement on one year's prior written notice at any time in the event of a
Default.  This Agreement may also be terminated by either Party pursuant to
Section 5.4 hereof.

         6.3     Involuntary Termination.   If this Agreement is terminated due
to a final, non-appealable order of a court or governmental agency or authority
having jurisdiction or with the consent of both Parties in connection with a
court or governmental agency order or directive, BP shall act as Sterling's
exclusive agent for the sale of acrylonitrile in the Joint Venture Territory at
volumes no less than the volumes then in effect under this Agreement for a
mutually agreed period, or in the absence of any agreement, for twelve (12)
months from the effective date of such termination unless and except to the
extent that such arrangement  is barred by such order or directive. For such
acrylonitrile sales during such period, ***.

         6.4     ***  If this Agreement is terminated pursuant to this Section
6.4 or Section 5.4 hereof, BP shall act as Sterling's exclusive agent for the
sale of acrylonitrile in the Joint Venture Territory at volumes no less than
the volumes then in effect under this Agreement for a mutually agreed period,
or in the absence of any agreement, twelve (12) months from the effective date
of such termination.  For such acrylonitrile sales during such period, ***.





                                      -11-
<PAGE>   12
         6.5     *** be cleared by the Parties within one year of termination
pursuant to a mutually acceptable arrangement or, in the absence of such an
arrangement, by the sale of acrylonitrile by the oversupplied Party to the
undersupplied Party at the times provided in such assigned contracts ***.   BP
shall continue to make available to Sterling any Support Services being
provided by BP or any third party provider to the Company for a period of one
(1) year after termination of this Agreement pursuant to terms identical to
those contained in the Support Services Agreement.  In addition, the Parties
will provide for a transition continuation of third party services, such as
joint terminalling, for up to one (1) year after termination of this Agreement,
to the extent such services are transferable to the Parties.

                         Article 7 - Transition Matters

         7.1     Exchange Agreements.  Exchange agreements whereby
Acrylonitrile is received anywhere in the Joint Venture Territory shall be
entered into solely and exclusively by the Company.

         7.2     Third Party Beneficiary.  Because not all Existing Contracts
may be unilaterally assignable to the Company by the Parties, each Party agrees
that, until such Existing Contracts expire or terminate or the consent to such
assignment has been obtained, such Party shall perform such Existing Contract
for the exclusive benefit of the Company, with the "benefit" of the contract
being credited to the Company, subject to the revenue streaming provisions of
Section 3.4.3 hereof.  The volume of any Acrylonitrile sold in connection with
such  Sales Contracts shall be included, for all purposes of Article 5 hereof,
in that Party's BRV for the calendar year in which such sales are made and
shall be considered as sales by the Company on behalf of such party for
purposes of the Sterling Floor and the BP Floor.  Any sales commitments (other
than those contained in the Sales





                                      -12-
<PAGE>   13
Contracts) entered into by either Party prior to the Effective Date but loading
after the Effective Date will be included in that Party's BRV for the calendar
year in which loaded, will be deemed sales for the benefit of the Company,
subject to the revenue streaming provisions of Section 3.4.3 hereof and shall
be considered as sales by the Company on behalf of such Party for purposes of
the Sterling Floor and the BP Floor.  Any inventory in the Parties' offshore
terminals or in transit to the Parties' offshore terminals after the Effective
Date will be sold to the Company and applied to the individual Parties' BRVs
and the Sterling Floor and the BP Floor as appropriate.

                     Article 8 - Bookkeeping and Accounting

         8.1     Books and Records.  The Company shall keep true and accurate
books of account and records and shall make all reports in accordance with
sound accounting practices and principles employing standards and procedures,
and in a form, in conformity with U.S. generally accepted accounting principles
as historically practiced by BP.  If, in the reasonable opinion of either BP or
Sterling, such practices do not readily provide for the preparation of
quarterly financial reports in a form that it is accustomed to using in their
own operations, then the detailed substance for the preparation of all
necessary financial reports and all relevant cost reports shall be supplied to
BP and Sterling by the Company at the Company's expense.

         8.2     Financial Reports; Audit.  At the end of each fiscal year, the
financial records of the Company shall be audited at the Company's expense by a
firm of independent certified public accountants of international reputation to
be selected by BP and Sterling, as auditor of the Company.  The financial
reports prepared by the Company and the audit report prepared by these
accountants shall be in English.  BP and Sterling, each at its own expense,
reserves the right to have an annual





                                      -13-
<PAGE>   14
review and audit made by an outside accounting firm of its own choice of:  (i)
the audit prepared by the auditor of the Company; and (ii) the underlying
records of the Company.

         8.3     Access to Books and Records.  In addition to any other rights
they may have under the laws of the State of Delaware as members of the
Company, BP and Sterling each shall have the right to verify any information
pertinent to this Agreement.  Upon written request by either Party from time to
time, the Company shall provide to an independent third party accountant
selected by the Party making the request, at reasonable times during normal
business hours, subject to the receipt by the Company of an appropriate
confidentiality agreement signed by such accountant, access to the Company's
books, records and accounts relating to this Agreement, except as such access
may be prohibited by law or presently existing third party confidentiality
agreements.  Such independent third party accountant shall thereupon have the
right to make copies of and abstracts from such books, records and accounts, at
the requesting Party's expense, which copies may be removed from the premises
of the Company and retained by such accountant, subject to the terms of the
confidentiality agreement signed by such accountant.  It is agreed that such
accountant may report to the requesting Party only its conclusions resulting
from such accountant's review of the Company's data, and nothing else.

                   Article 9 - Representations and Warranties

         9.1     Each of the Parties represents and warrants to the other Party
that:

                 (i)      it is a corporation, duly organized, validly existing
and in good standing in the jurisdiction of its incorporation;





                                      -14-
<PAGE>   15
                 (ii)     it has all requisite power and authority, corporate
or otherwise, to execute and deliver this Agreement and the LLC Agreement;

                 (iii)    the execution and delivery of this Agreement and the
LLC Agreement, and the consummation of the transactions contemplated hereby and
thereby, have been duly and validly authorized by its Board of Directors and no
other corporate proceeding or approvals on its part are necessary to authorize
this Agreement or the LLC Agreement or to consummate the transactions
contemplated hereby or thereby;

                 (iv)     this Agreement and the LLC Agreement have been duly
executed and delivered by it and, assuming the due authorization, execution and
delivery hereof and thereof by the other Party, constitute its legal, valid and
binding obligations, enforceable against it in accordance with their respective
terms, except as such enforcement may be limited by applicable law and general
equitable principles;

                 (v)      the execution and delivery of this Agreement and the
LLC Agreement and the consummation of the transactions contemplated hereby and
thereby by it do not and will not (a) constitute a violation of any law,
statute, rule or regulation, (b) constitute a breach or violation of any
provision contained in its articles or certificate of incorporation or bylaws,
(c) constitute a breach of any provision contained in, or a default under, (1)
any authorization, consent, approval, license, permit, certificate or exemption
of any governmental authority, (2) any order, writ, injunction, judgment or
award of any governmental authority or (3) any contract or other agreement to
which it is a party, or (d) result in or require the creation of any lien,
claim or encumbrance upon any of its assets (other than such violations,
conflicts, breaches, defaults or creations of liens, claims or encumbrances
that, individually or in the aggregate, could not reasonably be expected to
have a





                                      -15-
<PAGE>   16
material adverse affect on its or the Company's business, operations, assets,
conditions (financial or otherwise), results of operations or prospects);

                 (vi)     no authorizations, consents, approvals, licenses,
permits, certificates of any governmental authority, and no notifications,
filings or registrations to or with any governmental authority or any other
person or entity is or will be necessary for the valid execution and delivery
by it of this Agreement or the LLC Agreement or the consummation by it of the
transactions contemplated hereby or thereby other than (1) those that have been
obtained or made and are in full force and effect, and (2) those that the
failure to obtain or make, individually or in the aggregate, could not
reasonably be expected to have a material adverse effect on its or the
Company's business, operations, assets, condition (financial or otherwise),
results of operations or prospects.

         9.2     Health, Safety and Environmental Compliance.   In the
performance of this Agreement, the Parties shall comply in all material
respects with any and all applicable laws, regulations, permits and orders of
governmental authorities pertaining to health, safety and the environment.

                       Article 10 - Default and Remedies

         10.1    Definition.  For purposes of this Agreement, a "Default" shall
mean, with respect to a Party, the failure by such Party to make any payment or
to perform any other material obligation under or pursuant to this Agreement
(for any reason other than an event of Force Majeure), which failure remains
uncured for thirty (30) days after receipt of notice of such failure from the
other Party.





                                      -16-
<PAGE>   17
         10.2    Rights and Obligations upon Default.  Upon the occurrence of
any Default, the non-defaulting Party may, at its option, terminate this
Agreement in accordance with the provisions of Section 6.2 hereof and/or may
make a claim for damages pursuant to Section 11.3 hereof.

         10.3    Damages.  In the event of any Default, the defaulting Party
shall compensate the non-defaulting Party for all loss or damage sustained as a
direct result of the Default, excluding punitive, exemplary, consequential or
contingent damages (e.g., loss of profits, loss of goodwill and investment
opportunity loss).  No claim for damages hereunder shall be made later than six
(6) months after a Default shall have occurred.

                           Article 11 - Force Majeure

         11.1    The inability of either Party to make or take delivery
hereunder (or any material portion thereof) when due, if occasioned by an event
or condition of Force Majeure, shall not subject such Party to any liability
hereunder to the extent that such event or condition prevents or delays in
whole or in material part the manufacture, sale, supply, shipment, acceptance,
conversion, use, consumption or resale by such Party of the Acrylonitrile to be
delivered by such Party hereunder.  The total quantity hereunder so omitted
shall be deducted from such Party's BRV and the Sterling Floor or the BP Floor,
whichever is appropriate, without liability, but the Agreement shall otherwise
remain unaffected.

         11.2    For purposes of this Agreement, "Force Majeure" shall mean,
without limitation, conditions arising out of war, fire, flood, strike,
breakage of equipment, accident, riot, action of governmental authority and
laws, rules, ordinances and regulations (including, but not limited to, those
dealing with pollution, health, ecology, tariffs, duties and other governmental
assessments or





                                      -17-
<PAGE>   18
restrictions, environmental matters), act of God, the inability to obtain any
raw material (including energy source or power) used in connection with the
production of Acrylonitrile, or any other event, contingency or circumstances
of like or different character beyond the reasonable control of the Party so
affected which prevents or delays the material performance by such Party of its
obligations hereunder.

         11.3    If a Party is prevented or delayed by Force Majeure from
performing hereunder, it shall give prompt notice to the other Party and the
Company and take all actions within its power (excluding the settlement of
labor disputes or strikes) to remove the basis for non-performance and after
doing so shall resume performance as soon as possible.

         11.4    Notwithstanding the above definition of Force Majeure and the
provisions of Section 11.1 hereof to the contrary, the failure by either Party
to perform any of its obligations under this Agreement shall be deemed not to
have been caused by Force Majeure or circumstances reasonably outside its
control if such failure results from breakage or accident to machinery,
equipment, lines of pipe or other property or the partial or entire failure
thereof or the necessity to make repairs or alterations thereto which result
from normal wear and tear or which could be reasonably anticipated by a
reasonably prudent operator or in circumstances where a reasonably prudent
operator would have standby equipment or spare parts.

               Article 12 - Confidentiality and Public Statements

         12.1    Except as otherwise provided in this Article 12, the terms and
conditions of this Agreement, and all data, reports, records, and other
information of any kind whatsoever developed or acquired by either Party in
connection with the Joint Venture shall be used solely for purposes of





                                      -18-
<PAGE>   19
this Agreement and the LLC Agreement and shall be treated by the Parties as
confidential (hereinafter referred to as "Confidential Information") and
neither Party shall reveal or otherwise disclose such Confidential Information
to third parties, other than the Company, without prior written consent of the
other Party.  The foregoing restrictions shall not apply to the disclosure of
Confidential Information by a Party to any of its affiliates, and to employees
and consultants of the Parties; provided, however, that in any such case only
such Confidential Information as such third party shall have a legitimate
business need to know shall be disclosed and the person or company to whom
disclosure is made shall first undertake in writing to protect the confidential
nature of such Confidential Information at least to the same extent as the
Parties are obligated under this Article 12.  In addition, the foregoing
restrictions shall not apply to information that (i) at the time of its
disclosure is, or thereafter becomes, generally available to the public other
than as a result of a disclosure by a Party or any of its affiliates in
violation of this Agreement, (ii) was known by or available to the Party
receiving such information or its affiliates on a non-confidential basis prior
to its disclosure to such Party pursuant to this Agreement (provided that the
source of such information was not known by such Party or its affiliates to be
then bound by a confidentiality agreement or other obligation of
confidentiality to the other Party or any of its affiliates with respect to
such information), or (iii) becomes available to such Party or its affiliates
on a non-confidential basis (provided that the source of such information was
not known by such Party or its affiliates to be then bound by a confidentiality
agreement or other obligation of confidentiality with respect to such
information).  Notwithstanding anything contained herein to the contrary, in
the event that (1) any information or materials is excluded from the term
Confidential Information hereunder because such information or materials was
known by or available to a Party or any of its affiliates on a non-





                                      -19-
<PAGE>   20
confidential basis through a source which was not known by a Party or any of
its affiliates to be bound by a confidentiality agreement with or other
contractual, legal or fiduciary obligation of confidentiality to the other
Party or any of its affiliates with respect to such information or materials,
and (2) a Party or any of its affiliates thereafter becomes aware that such
source was, in fact, bound by a confidentiality agreement with or other
contractual, legal or fiduciary obligation of confidentiality to the other
Party or any of its affiliates with respect to such information or materials,
then, upon such awareness, such information or materials shall thereafter be
deemed to be Confidential Information hereunder; provided, however, that a
Party or any of its affiliates shall not have any liability hereunder for any
disclosure of such Confidential Information which it may have made prior to
such awareness.

         12.2    Nothing contained in this Agreement shall be deemed to
prohibit a Party from disclosing any of the Confidential Information to the
extent required by law, regulation, legal process or other legal compulsion.
In the event that a Party or anyone to whom it transmits any Confidential
Information in accordance with this Agreement are requested or required (by
deposition, interrogatories, requests for information or documents in legal
proceedings, subpoenas, civil investigative demand or similar process), in
connection with any proceeding or investigation to disclose any Confidential
Information, that Party will use commercially reasonable efforts to give the
other Party prompt written notice of such request or requirement so that the
other Party may seek an appropriate protective order or other remedy and/or
waive compliance with the provisions of this Agreement, and that Party will
cooperate (reasonably) with the other Party (at the latter's expense) to obtain
such protective order.  In the event that such protective order or other remedy
is not obtained and the other Party does not waive compliance with the relevant
provisions of this





                                      -20-
<PAGE>   21
Agreement, the Party so requested or required to disclose Confidential
Information (or such other persons to whom such request is directed) will
furnish only that portion of the Confidential Information which, in the opinion
of its counsel, is legally required to be disclosed and, upon the other Party's
request, and at its expense, use commercially reasonable efforts to obtain
assurances that confidential treatment will be accorded to such information.

         12.3    Neither Party shall make any public announcement or public
disclosure with regard to the Joint Venture, including confidential and
non-confidential information, without the prior written consent of the other
Party as to the content and timing of such announcement or disclosure unless
such Party is required by law to make such public announcement or disclosure,
in which case the provisions of Section 12.2 hereof shall apply with respect to
any Confidential Information disclosed.

         12.4    Prior to the disclosure of any technical Confidential
Information by one Party to the other, or by a Party to the Company, the
Parties, or Party and the Company, as the case may be, will enter into a
separate Confidentiality Agreement covering such disclosures in the event such
disclosures are not protected by any pre-existing agreement by the Parties or
by the Party and Company, as the case may be.

         12.5    Nothing in this Agreement shall require the Parties to
disclose to the Company or to each other confidential information received from
third parties which is precluded by written agreement from further disclosure
by the Parties.





                                      -21-
<PAGE>   22
                           Article 13 - Miscellaneous

         13.1    Assignment.  Neither Party hereto may assign or otherwise
transfer, in whole or part, to any third party any of its rights or obligations
under this Agreement without the prior written consent of the other Party
provided, however, that no such consent shall be required for assignment to a
successor in interest of all or substantially all of the assets or business of
any Party to which this Agreement relates (unless such successor in interest
is, at the time of proposed assignment, a competitor of the other Party or is
otherwise objectionable to the other Party for legitimate business reasons, and
such objection is asserted in good faith and not waived by the Party asserting
it).  As part of any permitted assignment, the assigning Party shall require
its assignee to accept and be bound by the terms of this Agreement.  In the
case of an assignment to a successor in interest of a Party, the assigning
Party shall remain liable for the performance by the assignee of the
obligations of the assigning Party under this Agreement unless the other Party
agrees otherwise in writing.  This Agreement shall be binding upon and inure to
the benefit of the successors in interest and permitted assigns of the Parties
hereto.

         13.2    Governing Law.  This Agreement shall be governed and construed
in accordance with the laws of the State of Delaware, without giving effect to
conflict of laws principles thereof.

         13.3    Relationship of Parties.  Each Party hereto shall be
responsible only for the obligations and liabilities as expressly set forth in
this Agreement.  Nothing contained in this Agreement shall be deemed to
constitute either Party the agent or legal representative of the other.
Neither Party shall have any authority to act for or to assume any obligation
or responsibility on behalf of the other Party, except as otherwise provided
herein.





                                      -22-
<PAGE>   23
         13.4    Entire Agreement.  This Agreement, including the Exhibits
attached hereto and the LLC Agreement, constitute the entire agreement of the
Parties in respect to the subject matter hereof and thereof.  Any and all
previous discussions, representations, negotiations, proposals and
understandings relative thereto, oral or written, are superseded by this
Agreement and the LLC Agreement, and any and all other documents exchanged by
the Parties prior to the signature of this Agreement and the LLC Agreement and
relating to the subject matter hereof and thereof, whether or not signed by
either or both of the Parties, are null and void.

         13.5    Amendments.  No waiver, modification or amendment of this
Agreement shall be valid for any purpose whatsoever unless made in writing and
signed by both Parties.

         13.6    Severability.  The Parties agree that if any part, term or
provision of this Agreement shall be found illegal or unenforceable by a court
of competent jurisdiction or by binding arbitration, the validity and effect of
the remaining parts, terms and provisions shall not be affected thereby.

         13.7    Headings and Titles.  The various headings and titles in this
Agreement are inserted solely for convenience and shall not affect the meaning
or interpretation of this Agreement.

         13.8    Waiver.  The failure of either Party to insist on a strict
performance of any of the terms or provisions of this Agreement shall not be
deemed a waiver of any subsequent breach of or default in the performance of
such terms or provisions.

         13.9    Notices.  All notices made or required hereunder shall be
deemed sufficiently given if made by first class mail or by personal delivery,
air express courier or by facsimile or electronic transmission and confirmed by
first class mail, properly addressed and sent to the recipient at its
designated address.  All notices shall be deemed to have been sent on the date
mailed or, if by fax or electronic mail on the date faxed or sent, and to have
been received on the third business day





                                      -23-
<PAGE>   24
thereafter in the case of mail or when actually received in the case of fax or
electronic mail (subject to telephonic confirmation of receipt).  For purposes
hereof, the designated addresses and numbers of the Parties shall be the
following addresses and numbers or, with respect to either Party, such other
address as such Party may at any time designate in a notice given in accordance
with this section for these purposes:

TO BP:           BP Chemicals Inc.
                 4440 Warrensville Road
                 Cleveland, Ohio 44128-2837
                 Attention:  Vice President Nitriles Marketing
                 Fax #: (216) 586-3838
                 E-mail: [email protected]

TO STERLING:     Sterling Chemicals Inc.
                 1200 Smith Street, Suite 1900
                 Houston, Texas 77002-4312
                 Attention:       General Manager, Acrylonitrile
                                  and General Counsel
                 Fax #: (713) 654-9551
                 E-mail: [email protected]

         13.10   Disputes.  In the event the Parties, using commercially
reasonable efforts, fail to amicably resolve within thirty (30) days any
dispute arising out of:  (i) the interpretation of this Agreement, (ii) the
execution, amendment or termination of any Company contract with any person or
entity (not part of the Company's approved Marketing Plan), including any sales
Contract or Purchase Contract, involving a Company commitment reasonably
expected in the aggregate to exceed one million dollars ($1,000,000), or (iii)
any Acrylonitrile price changes (not part of the Company's approved Marketing
Plan), unless both Parties otherwise agree such matter shall be resolved in
accordance with the following:





                                      -24-
<PAGE>   25
                 13.10.1  They shall promptly advise their respective chief
         executive officers ("CEOs") of their inability to reach agreement
         through informal discussion within the required time limits, and shall
         within ten (10) days of the passing of such time limits, submit the
         dispute to their respective CEOs for resolution.  In the event the
         CEOs fail to amicably resolve the dispute within thirty (30) days of
         such referral, the dispute shall be settled by binding arbitration
         pursuant to Section 13.10.2 below.

                 13.10.2  Both Parties shall set forth their respective
         positions with regard to the issue in dispute in writing and
         resolution of the issue shall be determined by arbitration by three
         (3) arbitrators, one (1) of whom shall be appointed by BP, one (1) by
         Sterling and one (1) by the other two (2) arbitrators.  If the first
         two (2) arbitrators cannot agree on the appointment of a third
         arbitrator, then such third arbitrator shall be a partner in one of
         the "Big Six" accounting firms not employed by BP or Sterling or any
         of their affiliate companies appointed by the Midwest Regional
         Director of the American Arbitration Association.  The arbitration
         shall be conducted in Chicago pursuant to the Commercial Arbitration
         Rules of the American Arbitration Association.  The Parties hereto
         agree that the determination of the arbitrators will be final and
         binding.  Judgment upon the arbitrators' award may be entered in any
         court having jurisdiction thereof.  BP and Sterling shall each bear
         the costs of their respective arbitrators and their related expenses,
         and the costs of the third arbitrator and his related expenses, as
         well as all other costs of the arbitration, shall be paid equally by
         BP and Sterling or as otherwise determined by





                                      -25-
<PAGE>   26
         such arbitrators.  During arbitration, the Parties shall continue to
         perform their obligations under this Agreement with the exception of
         those under arbitration.

         IN WITNESS WHEREOF, the Parties hereto have caused this Agreement to
be executed by their duly authorized and empowered representatives on the day
and year first above written, but effective as of the Effective Date.

STERLING CHEMICALS, INC.                 BP CHEMICALS INC.





By:/s/ Frank P. Diassi                   By: /s/ Gary C. Greve
   ---------------------------              ------------------------------
        Frank P. Diassi                              Gary C. Greve
     Chairman of the Board                             President





                                      -26-
<PAGE>   27
                                   EXHIBIT A





                                      ***





                                      -1-
<PAGE>   28
                                   EXHIBIT B



                   EXPORT GRADE ACRYLONITRILE SPECIFICATIONS





                                      ***





                                      -1-
<PAGE>   29
                                  EXHIBIT C-1



                  Form of Company Certificate of Formation





                                      -1-
<PAGE>   30


                          CERTIFICATE OF FORMATION

                                     OF

                                 ANEXCO, LLC


         This Certificate of Formation of ANEXCO, LLC (the "Company") is being
executed by the undersigned for the purpose of forming a limited liability
company pursuant to the Delaware Limited Liability Company Act ("Act").

                                   ARTICLE I

                         NAME, REGISTRATION AND PURPOSE

                 Section  1.01   Name.  The name of the limited liability
company is "ANEXCO, LLC" (the "Company").

                 Section  1.02   Registered Office and Registered Agent.  The
registered office of the Company in the State of Delaware is located at
Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801.  The
name of the registered agent of the Company at such address is The Company
Trust Company.

                 Section  1.03   Purpose.  The purpose and business of the
Company shall be to sell and distribute acrylonitrile produced, purchased or
otherwise obtained by the members of the Company (the "Members") in the
Territory (as defined in the Limited Liability Company Agreement of the
Company, the "LLC Agreement").  In addition, the Company may carry on any
business that a company organized under the Delaware Limited Liability Company
Act (the "Act") may carry on that is necessary or incidental to such purpose,
or otherwise appropriate given such purpose, that is not forbidden by the LLC
Agreement or the Act.  The Company shall conduct no business other than the
businesses permitted under this Section 1.03.

                                 ARTICLE II

                                  MANAGERS

                 Section  2.01   Number and Term.  The number of managers of
the Company (the "Managers") shall from time to time be fixed exclusively by
the Members in accordance with, and subject to the limitations set forth in,
the LLC Agreement.  No decrease in the number of Managers shall have the effect
of shortening the term of any incumbent Manager.  Notwithstanding anything





                                      -2-
<PAGE>   31
to the contrary contained in this Certificate of Formation or the LLC
Agreement, each Manager shall hold office until his or her successor is duly
appointed or elected and qualified or until his or her earlier death,
resignation or removal.

                 Section  2.02   Nomination and Election.  (a) The LLC
Agreement shall set forth procedures for the nomination of persons for election
or reelection to the Board of Managers and only persons who are nominated in
accordance with such procedures (if any) shall be eligible for election or
reelection as Managers of the Company.

                 (b)      Each Manager shall be elected in accordance with this
Certificate of Formation, the LLC Agreement and applicable law.  Election of
Managers by the Members need not be by written ballot unless the LLC Agreement
so provides.

                 Section  2.03   Limitation of Personal Liability.  (c) No
person who is or was a Manager of the Company shall be personally liable to the
Company or its Members for monetary damages for breach of fiduciary duty as a
Manager, except for liability (i) for acts or omissions which involve
fraudulent or intentional misconduct or a knowing violation of law or (ii) for
any transaction from which the Manager derived an improper personal benefit.

                 (b)      If the Act is hereafter amended to authorize action
by the Company further limiting or eliminating the personal liability of
Managers, then the personal liability of the Managers to the Company or its
Members shall be limited or eliminated to the full extent permitted by the Act,
as so amended from time to time.

                                 ARTICLE III

                  INDEMNIFICATION OF MANAGERS AND OFFICERS

                 Subject to the standards and restrictions, if any, as are set
forth in the LLC Agreement, the Company shall (i) indemnify, to the fullest
extent permitted by applicable law, each person who is or was a Manager or
officer of the Company or is or was serving at the request of the Company as a
manager, director, officer or fiduciary of another corporation, partnership,
limited liability company, joint venture, trust or other enterprise, and (ii)
may indemnify each employee and agent of the Company and all other persons whom
the Company is authorized to indemnify under the provisions of the Act.
Without limiting the generality or effect of the foregoing, the Company may
enter into one or more agreements with any person which provide for
indemnification greater or different than that provided in this Article III.





                                      -3-
<PAGE>   32
                                 ARTICLE IV

                    AMENDMENT OF CERTIFICATE OF FORMATION

                 The Company reserves the right to amend, alter, change or
repeal any provisions contained in this Certificate of Formation, in the manner
now or hereafter prescribed by applicable law, and all rights, preferences and
privileges conferred upon Members, Managers or any other persons by and
pursuant to this Certificate of Formation are granted subject to this
reservation.  Notwithstanding the foregoing or any other provision of this
Certificate of Formation or any provision of law that might otherwise permit a
lesser or no vote, the provisions of this Article IV and of Articles II and III
may not be repealed or amended in any respect, unless such action is approved
by the affirmative vote of all of the Members; provided, however, that any
amendment or repeal of Section 2.03 or Article III of this Certificate of
Formation shall not adversely affect any right or protection existing
thereunder in respect of any act or omission occurring prior to such amendment
or repeal.

                 IN WITNESS WHEREOF, the undersigned, an authorized person or
agent or attorney-in-fact of the Company, has caused this Certificate of
Formation to be duly executed as of the 16th day of March, 1998.




                                                 -----------------------------
                                                 Jared A. Schnall, President





                                      -4-
<PAGE>   33
                                  EXHIBIT C-2

                             Form of LLC Agreement





                                      -1-
<PAGE>   34
LIMITED LIABILITY COMPANY AGREEMENT
of
ANEXCO, LLC


                 THIS LIMITED LIABILITY COMPANY AGREEMENT OF ANEXCO, LLC, dated
as of March 31, 1998, is entered into by and between BP Chemicals Inc., an Ohio
corporation ("BP"), and Sterling Chemicals, Inc., a Delaware corporation
("Sterling").

                                   ARTICLE V

                         DEFINITIONS AND INTERPRETATION

                 Section  5.01    Certain Defined Terms.  Capitalized terms
used in this Agreement shall have the following respective meanings, except as
otherwise provided herein or as the context shall otherwise require:

                 "Act" means the Delaware Limited Liability Company Act.

                 "Adjusted Capital Account" means the Capital Account
         maintained for each Member as of the end of each fiscal year of the
         Company:

                          (i)     increased by any amounts that such Member is
                 obligated to restore under the standards set forth by Treasury
                 Regulation Section 1.704-1(b)(2)(ii)(c) (or is deemed
                 obligated to restore under Treasury Regulation Sections
                 1.704-2(g) and 1.704-2(i)(5)); and

                          (ii)    decreased by (a) the amount of all losses and
                 deductions that, as of the end of such fiscal year, are
                 reasonably expected to be allocated to such Member in
                 subsequent years under Sections 704(e)(2) and 706(d) of the
                 Code and Treasury Regulation Section 1.751-1(b)(2)(ii), and
                 (b) the amount of all distributions that, as of the end of
                 such fiscal year, are reasonably expected to be made to such
                 Member in subsequent fiscal years in accordance with the terms
                 of this Agreement, or otherwise to the extent they exceed
                 offsetting increases to such Member's Capital Account that are
                 reasonably expected to occur during (or prior to) the fiscal
                 year of the Company in which such distributions are reasonably
                 expected to be made.

         This definition of Adjusted Capital Account is intended to comply with
         the provisions of Treasury Regulation Section 1.704-1(b)(2)(ii)(d) and
         shall be interpreted consistently therewith.





                                      -2-
<PAGE>   35
                 "Adjusted Property" means any Asset of the Company, the
         Carrying Value of which has been adjusted pursuant to Section 6.01(d)
         or Section 6.01(e).  Upon termination of the Company pursuant to
         Treasury Regulation 1.708-1(b)(1)(iv), an Adjusted Property deemed
         contributed to a new company in exchange for an interest in the new
         company, followed by the deemed liquidation of the Company, shall
         thereafter constitute a Contributed Property until the Carrying Value
         of such Contributed Property is subsequently adjusted pursuant to
         Section 6.01(d) or 6.01(e).

                 "Affiliate" means, when used with respect to any Person, (i)
         any other Person at the time directly or indirectly controlling,
         controlled by or under common control with, such Person, (ii) any
         other Person of which such Person at the time owns, or has the right
         to acquire, directly or indirectly, more than 50% on a consolidated
         basis of the equity or beneficial interest, or (iii) any other Person
         which at the time owns, or has the right to acquire, directly or
         indirectly, more than 50% of any class of the capital stock or
         beneficial interest of such Person.  The term "control" (including,
         with correlative meaning, the terms "controlling," "controlled by" and
         "under common control with") means the possession, directly or
         indirectly, of the power to direct or cause the direction of the
         management or policies of such Person, whether by Contract or
         otherwise.  For purposes of this Agreement, (a) the Company shall not
         be deemed an Affiliate of any of the Members and (b) none of the
         Members shall be deemed Affiliates of each other by virtue of the
         consummation of the transactions contemplated hereby.

                 "Agreed Allocation" means any allocation, other than a
         Required Allocation, of an item of income, gain, loss or deduction
         pursuant to the provisions of Section 6.02, including a Curative
         Allocation (if appropriate to the context).

                 "Agreed Value" means, with respect to any Contributed
         Property, the fair market value of such Contributed Property or other
         consideration at the time of contribution as determined by the Board
         using such reasonable method of valuation as it may adopt; provided,
         however, that (i) with respect to the Continued Properties initially
         contributed to the Company by each of the Members, the Agreed Value of
         such Contributed Properties is the amounts reflected on Exhibit B
         hereto on an aggregate and separate property basis, and (ii) the Board
         shall, in its discretion, use such method as it deems reasonable and
         appropriate to allocate the aggregate Agreed Value of Contributed
         Properties contributed to the Company in a single or integrated
         transaction among each separate Contributed Property on a basis
         proportional to the fair market value of each Contributed Property.

                 "Agreement" means this Limited Liability Company Agreement.

                 "Annual Business Plan" means, for each fiscal year of the
         Company, the comprehensive business plan and strategy for the sale and
         distribution of acrylonitrile in the Territory for such fiscal year,
         including goals and objectives of the Company with respect





                                      -3-
<PAGE>   36
         to volume, customers, pricing, storage, distribution, exchange and
         Third Party supply Contracts, market penetration and share and similar
         matters.

                 "Assets" means, with respect to any Person, all assets and
         properties of every kind, nature, character and description, whether
         real, personal or mixed, tangible or intangible, wherever situated,
         including any goodwill related thereto, which are operated, owned or
         leased by such Person.

                 "Bankrupt" or "Bankruptcy" means, with respect to any Person,
         that:

                          (i)     such Person has (a) made a general assignment
                 for the benefit of creditors, (b) filed a voluntary bankruptcy
                 petition, (c) become the subject of an order for relief or
                 been declared insolvent in any federal or state bankruptcy or
                 insolvency proceeding, (d) instituted a proceeding or filed an
                 answer in a proceeding seeking to adjudicate itself insolvent
                 or seeking reorganization, arrangement, composition,
                 readjustment, protection, liquidation, winding-up, dissolution
                 or similar relief of such Person or such Person's Liabilities
                 under any Debtor Relief Law, (e) filed an answer or other
                 pleading admitting or failing to contest the material
                 allegations of a petition filed against such Person in a
                 proceeding of the type described in subclauses (a) through (d)
                 of this clause (i), (f) sought, consented to or acquiesced in
                 an order for relief or the appointment of a trustee, receiver,
                 liquidator or similar official for such Person or for any
                 substantial part of such Person's Assets or (g) taken any
                 action in furtherance of any such actions; or

                          (ii)    any proceeding of the type referred to in
                 clause (i) above has been filed or commenced against such
                 Person or such Person by any act has indicated its approval
                 thereof, consented thereto or acquiesced therein, or an order
                 for relief has been entered in an involuntary case under any
                 Debtor Relief Law, or an order, judgment or decree has been
                 entered appointing a trustee, receiver, custodian, liquidator
                 or similar official or adjudicating such Person insolvent, or
                 approving the petition in any such proceedings, and such
                 order, judgment or decree has remained in effect and unstayed
                 for 60 days.

                 "Bankrupt Member" has the meaning specified in Section
         4.05(b).

                 "Board" has the meaning specified in Section 7.01.

                 "Book-Tax Disparity" means with respect to any item of
         Contributed Property or Adjusted Property, as of the date of any
         determination, the difference between the Carrying Value of such
         Contributed Property or Adjusted Property and the adjusted basis
         thereof for federal income tax purposes as of such date.  A Member's
         share of the Company's Book-Tax Disparities in all of its Contributed
         Property and Adjusted Property shall be reflected by the difference
         between such Member's Capital Account balance as maintained pursuant
         to





                                      -4-
<PAGE>   37
         Section 6.01 and the hypothetical balance of such Member's Capital
         Account computed as if it had been maintained in accordance with
         federal income tax accounting principles.

                 "BP" has the meaning specified in the introductory paragraph
         of this Agreement.

                 "BP Representative" has the meaning specified in Section
         7.03(a).

                 "Capital Account" means the capital account maintained for a
         Member pursuant to Section 6.01.

                 "Capital Contribution" means any cash, cash equivalents or the
         Net Agreed Value of any Contributed Property that a Member contributes
         to the Company pursuant to Article V of this Agreement.

                 "Carrying Value" means (i) with respect to a Contributed
         Property, the Agreed Value of such Contributed Property reduced (but
         not below zero) by all depreciation, amortization and cost recovery
         deductions charged to the Member' Capital Accounts in respect of such
         Contributed Property, and (ii) with respect to any other Asset of the
         Company, the adjusted basis of such Asset for federal income tax
         purposes, all as of the time of determination.  The Carrying Value of
         any Asset shall be adjusted from time to time in accordance with
         Sections 6.01(d) and 6.01(e) and to reflect changes, additions or
         other adjustments to the Carrying Value for dispositions and
         acquisitions of Assets of the Company, as approved by the Tax Matters
         Member.

                 "Catalyst Supply Contract" means *** .

                 "CEOs" has the meaning specified in Section 7.02.

                 "Certificate of Formation" has the meaning specified in
         Section 2.01.

                 "Claim" means any claim, demand, investigation, inquiry, cause
         of action, suit, default, assessment, litigation, third party action,
         arbitral proceeding or other proceeding by or before any Governmental
         Authority or any other Person.

                 "Code" means the Internal Revenue Code of 1986, together with,
         and as interpreted by, the regulations promulgated and rulings issued
         thereunder.

                 "Company" means ANEXCO, LLC, a Delaware limited liability
         company.

                 "Company Fiduciary" has the meaning specified in Section
         7.16(a).





                                      -5-
<PAGE>   38
                 "Contract" means any agreement, lease, license, evidence of
         indebtedness, mortgage, deed of trust, note, bond, indenture, security
         agreement, commitment, instrument, understanding or other contract,
         obligation or arrangement of any kind.

                 "Contributed Property" means each Asset, in such form as may
         be permitted by the Act, but excluding cash or cash equivalents,
         contributed or deemed contributed to the Company (or deemed
         contributed to the Company pursuant to Section 708 of the Code).  Once
         the Carrying Value of a Contributed Property is adjusted pursuant to
         Section 6.01(d) or 6.01(e), such Contributed Property shall no longer
         constitute a Contributed Property, but shall be deemed to be an
         Adjusted Property

                 "Curative Allocation" means any allocation of an item of
         income, gain, deduction, loss or credit pursuant to the provisions of
         Section 6.02(c).

                 "Debtor Relief Laws" means the Bankruptcy Code of the United
         States, and any successor statute of similar import, and all other
         applicable dissolution, liquidation, conservatorship, bankruptcy,
         moratorium, readjustment of debt, compromise, rearrangement,
         receivership, insolvency, fraudulent transfer or conveyance,
         reorganization or similar debtor relief Laws from time to time in
         effect affecting the rights of creditors generally.

                 "Dissolution Event" has the meaning specified in Section 2.05.

                 "Economic Risk of Loss" has the meaning set forth in Treasury
         Regulation Section 1.752-2(a).

                 "GAAP" means generally accepted United States accounting
         principles, applied by BP on a consistent basis (except for changes
         made due to the implementation of new or revised standards issued by
         the Financial Accounting Standards Board), which are applicable in the
         circumstances as of the date in question.  Accounting principles are
         applied on a "consistent basis" when the accounting principles
         observed by BP in a current period are comparable in all material
         respects with those accounting principles applied by BP in a preceding
         period.

                 "Governmental Authority" means (i) any nation or government,
         (ii) any federal, state, county, province, city, town, municipality,
         local or other political subdivision thereof or thereto, (iii) any
         court, tribunal, department, commission, board, bureau,
         instrumentality, agency, council, arbitrator or other entity
         exercising executive, legislative, judicial, regulatory or
         administrative functions of or pertaining to government and (iv) any
         other governmental entity, agency or authority having or exercising
         jurisdiction over any relevant Person, item or matter.

                 "Indemnified Persons" has the meaning specified in Section
         11.06.





                                      -6-
<PAGE>   39
                 "Joint Venture Agreement" means the Joint Venture Agreement
         dated as of March 31, 1998 between Sterling and BP.

                 "Laws" means (i) all laws, statutes, rules, regulations,
         ordinances, orders, writs, injunctions or decrees and other
         pronouncements having the effect of law of any Governmental Authority
         and (ii) all Contracts with any Governmental Authority relating to
         compliance with the matters described in (i) above.

                 "Liability" means, with respect to any Person, any
         indebtedness, obligation and other liability of such Person, whether
         absolute, accrued, contingent, fixed, liquidated or otherwise, or
         whether due or to become due.

                 "Lien" means (i) any lien, charge, mortgage, pledge,
         hypothecation, assignment, security interest, assessment, levy or
         encumbrance of any kind or nature whatsoever (whether voluntary or
         involuntary, affirmative or negative, and whether imposed or created
         by Contract, operation of Law or otherwise) in, on, of or with respect
         to any Assets of the applicable Person, whether now owned or hereafter
         acquired, (ii) any Contract to give any of the foregoing and (iii) any
         conditional sale or other title retention agreement and any financing
         lease having substantially the same effect as any of the foregoing.

                 "Liquidator" has the meaning specified in Section 11.01.

                 "Losses" means any and all damages (including special,
         consequential, exemplary or punitive damages), fines, penalties,
         judgments, deficiencies, losses, costs and expenses, including court
         costs, reasonable fees of attorneys, legal assistants, consultants,
         accountants and other experts and other reasonable expenses of any
         Claim.

                 "Major Acquisitions" means, for any fiscal year of the
         Company, the acquisition of Assets by the Company, in a single
         transaction or series of related transactions, for consideration in an
         aggregate amount exceeding ***.

                 "Major Expenditures" means, for any fiscal year of the
         Company, (i) all capital expenditures in such fiscal year which, when
         aggregated with the capital expenditures included in the Annual
         Business Plan for such fiscal year, exceed the aggregate amount of
         capital expenditures approved in such Annual Business Plan by more
         than ***, (ii) a reallocation of capital expenditure amounts between
         and among authorized categories of spending in the Annual Business
         Plan for such fiscal year which, when aggregated with all other such
         reallocations in such fiscal year, exceeds ***, (iii) any capital
         expenditures not included as a line item in the Annual Business Plan
         for such fiscal year (other than capital expenditures which are
         consistent with or incidental to such approved line items and which do
         not, in the aggregate, exceed ***) and (iv) operating and personnel
         expenses not included in the Annual Business Plan for such fiscal
         year; provided, however, that the term "Major Expenditures" shall not
         include any expenditures related to the acquisition of any Assets.





                                      -7-
<PAGE>   40
                 "Manager" means a manager of the Company.

                 "Member" means any Person executing this Agreement as of the
         date of this Agreement as a member or hereafter admitted to the
         Company as a member as provided in this Agreement; provided, however,
         that such term does not include any Person which has ceased to be a
         member in the Company.

                 "Membership Interest" means the interest of a Member in the
         Company, including rights to distributions (liquidating or otherwise),
         allocations, information and to consent or approve.

                 "Net Agreed Value" means (i) in the case of any Contributed
         Property, the Agreed Value of such Contributed Property reduced by any
         Liabilities either assumed by the Company upon such contribution or to
         which such Contributed Property is subject when contributed, and (ii)
         in the case of any Asset of the Company distributed to a Member by the
         Company, the Company's Carrying Value of such Asset (as adjusted
         pursuant to Section 6.01(e)) at the time such Asset is distributed,
         reduced by any indebtedness either assumed by such Member upon such
         distribution or to which such Asset is subject at the time of
         distribution, in either case, as determined under Section 752 of the
         Code.

                 "Net Income" means, for any fiscal year of the Company, the
         excess, if any, of the Company's items of income and gain (other than
         those items taken into account in the computation of Net Termination
         Gain or Net Termination Loss) for such fiscal year over the Company's
         items of loss and deduction (other than those items taken into account
         in the computation of Net Termination Gain or Net Termination Loss)
         for such fiscal year.  The items included in the calculation of Net
         Income shall be determined in accordance with Section 6.01(b) and
         shall not include any items specially allocated under Section 6.02(c).

                 "Net Loss" means, for any fiscal year of the Company, the
         excess, if any, of the Company's items of loss and deduction (other
         than those items taken into account in the computation of Net
         Termination Gain or Net Termination Loss) for such fiscal year over
         the Company's items of income and gain (other than those items taken
         into account in the computation of Net Termination Gain or Net
         Termination Loss) for such fiscal year.  The items included in the
         calculation of Net Loss shall be determined in accordance with Section
         6.01(b) and shall not include any items specially allocated under
         Section 6.02(c).

                 "Net Termination Gain" means the sum, if positive, of all
         items of income, gain, loss or deduction recognized by the Company for
         the fiscal year of the Company that includes the date on which the
         Company is liquidated and all fiscal years thereafter.  The items
         included in the determination of Net Termination Gain shall be
         determined in accordance with Section 6.01(b) and shall not include
         any items of income, gain or loss specially allocated under Section
         6.02(c).





                                      -8-
<PAGE>   41
                 "Net Termination Loss" means the sum, if negative, of all
         items of income, gain, loss or deduction recognized by the Company for
         the fiscal year of the Company that includes the date on which the
         Company is liquidated and all fiscal years thereafter.  The items
         included in the determination of Net Termination Loss shall be
         determined in accordance with Section 6.01(b) and shall not include
         any items of income, gain or loss specially allocated under Section
         6.02(c).

                 "Nonrecourse Built-in Gain" means, with respect to any
         Contributed Properties or Adjusted Properties that are subject to a
         Lien securing a Nonrecourse Liability, the amount of any taxable gain
         that would be allocated to the Members pursuant to Sections
         6.03(b)(i)(A), 6.03(b)(ii)(A) and 6.03(b)(iii) if such Assets were
         disposed of in a taxable transaction in full satisfaction of such
         Liabilities and for no other consideration.

                 "Nonrecourse Deductions" means any and all items of loss,
         deduction or expenditures (including any expenditure described in
         Section 705(a)(2)(B) of the Code) that, in accordance with the
         principles of Treasury Regulation Section 1.704-2(b), are attributable
         to a Nonrecourse Liability.

                 "Nonrecourse Liability" has the meaning specified in Treasury
         Regulation Section 1.752-1(a)(2).

                 "Partner Nonrecourse Debt" has the meaning specified in
         Treasury Regulation Section 1.704-2(b)(4).

                 "Partner Nonrecourse Debt Minimum Gain" has the meaning
         specified in Treasury Regulation Section 1.704- 2(i)(2).

                 "Partner Nonrecourse Deductions" means any and all items of
         loss, deduction or expenditures (including any expenditure described
         in Section 705(a)(2)(B) of the Code) that, in accordance with the
         principles of Treasury Regulation Section 1.704-2(i), are attributable
         to a Nonrecourse Liability.

                 "Partnership Minimum Gain" means the amount determined in
         accordance with Treasury Regulation Section 1.704-2(d).

                 "Percentage Interests" means ***.

                 "Permitted Liens" means (i) statutory liens for Taxes if the
         same shall at the time not be delinquent or thereafter may be paid
         without penalty or if such Taxes are being contested in good faith by
         appropriate proceedings promptly initiated and diligently conducted,
         (ii) Liens consisting of easements, zoning restrictions or other
         restrictions on the use of real property that do not materially affect
         the value of the Assets encumbered thereby or materially impair the
         ability of the owner thereof to use such Assets in its business as is





                                      -9-
<PAGE>   42
         presently being conducted, (iii) with respect to any Person, Liens of
         landlords, mechanics, materialmen, warehousemen, carriers or other
         statutory Liens securing obligations that are not yet due and are
         incurred in the ordinary course of business of such Person, (iv) with
         respect to any Person, Liens resulting from deposits to secure
         payments of workmen's compensation or other social security programs
         or to secure the performance of tenders, statutory obligations, surety
         and appeal bonds, bids or Contracts in the ordinary course of business
         of such Person, and (v) purchase money security interests.

                 "Permitted Transfer" has the meaning specified in Section
         10.01.

                 "Person" means any individual, firm, corporation, trust,
         association, company, limited liability company, joint stock company,
         partnership, joint venture, Governmental Authority or other entity or
         enterprise.


                 "Production Agreement" means the Amended and Restated
         Production Agreement dated as of March 31, 1998 between Sterling and
         BP.

                 "Recapture Income" means any gain recognized by the Company
         (computed without regard to any adjustment required by Section 734 or
         743 of the Code) upon the disposition of any Asset of the Company,
         which gain is characterized as ordinary income because it represents
         the recapture of deductions previously taken with respect to such
         Asset.

                 "Representatives" has the meaning specified in Section
         7.03(a).

                 "Required Allocation" means any allocation (or limitation
         imposed on an allocation) of an item of income, gain, deduction or
         loss pursuant to Section 6.02(c)(i) through Section 6.02(c)(vi).

                 "Residual Gain" or "Residual Loss" means any item of gain or
         loss, as the case may be, of the Company recognized for federal income
         tax purposes resulting from a sale, exchange or other disposition of a
         Contributed Property or Adjusted Property, to the extent such item of
         gain or loss is not allocated pursuant to Sections 6.03(b)(i)(A) or
         6.03(b)(ii)(A) to eliminate Book-Tax Disparities.

                 "Secretary of State" means the Secretary of State of the State
         of Delaware.

                 "Sterling" has the meaning specified in the introductory
         paragraph of this Agreement.

                 "Sterling Representative" has the meaning specified in Section
         7.03(a).

                 "Tax Adjustment" has the meaning specified in Section 6.01(f).

                 "Tax Matters Member" has the meaning specified in Section
         9.05.





                                      -10-
<PAGE>   43
                 "Taxes" means any and all taxes, assessments, imposts,
         deductions, charges, withholdings, Claims and levies assessed or
         imposed by any Governmental Authority and all Liabilities with respect
         thereto, including any sales, use, occupation, transfer, stock
         transfer, real property transfer, export, recording, gains, stamp,
         documentary, income, windfall profits, franchise, license, excise,
         payroll, social security, withholding, service, service use, ad
         valorem and property taxes, charges and similar levies and fees.

                 "Territory" means ***.

                 "Third Parties" means any Person other than the Company, the
         Members and their respective Affiliates.

                 "Transfer" means any sale, exchange, gift, assignment, grant
         of a Lien in or on, transfer by will or intestacy or other disposition
         of any Membership Interest (or any interest therein) or of all or part
         of the voting power (other than the granting of a revocable proxy)
         associated with any Membership Interest (or any interest therein)
         whatsoever, or any other transfer of beneficial ownership of any
         Membership Interest, whether voluntary or involuntary, including any
         such disposition or transfer as a part of any liquidation of a
         Member's Assets or any reorganization of a Member pursuant to any
         Debtor Relief Law.

                 "Transferee" means any assignee, transferee, secured party,
         creditor, trustee, receiver or other Person who obtains any Membership
         Interest, whether pursuant to Article X, a Permitted Transfer or
         Debtor Relief Law or by attachment, execution or operation of law.

                 "Treasury Regulations" means the Income Tax Regulations
         promulgated under the Code.

                 "Unrealized Gain" means, with respect to any Asset of the
         Company, as of the date of determination, the excess, if any, of (i)
         the fair market value of such Asset (as determined under Section
         6.01(d) or 6.01(e), over (ii) the Carrying Value of such Asset (prior
         to any adjustment to be made pursuant to Section 6.01(d) or 6.01(e) as
         of such date).

                 "Unrealized Loss" means, with respect to any Asset of the
         Company, as of the date of determination, the excess, if any, of (i)
         the Carrying Value of such Asset (prior to any adjustment to be made
         pursuant to Section 6.01(d) or 6.01(e) as of such date) over (ii) the
         fair market value of such Asset as determined under Section 6.01(d) or
         6.01(e).

                 "Whole Board" has the meaning specified in Section 7.03(a).





                                      -11-
<PAGE>   44
                 Section  5.02    Interpretation.  In this Agreement, unless a
clear contrary intention appears:

                 (a)      the words "hereof," "herein" and "hereunder" and
words of similar import refer to this Agreement as a whole and not to any
particular provision of this Agreement;

                 (b)      reference to any gender includes each other gender
and the neuter;

                 (c)      all terms defined in the singular shall have the same
meanings in the plural and vice versa;

                 (d)      reference to any Person includes such Person's heirs,
executors, personal representatives, administrators, successors and assigns;
provided, however, that nothing contained in this clause (d) is intended to
authorize any assignment not otherwise permitted by this Agreement;

                 (e)      reference to a Person in a particular capacity or
capacities excludes such Person in any other capacity;

                 (f)      reference to any Contract means such Contract as
amended, supplemented or modified from time to time in accordance with the
terms thereof;

                 (g)      all references to Articles and Sections shall be
deemed to be references to the Articles and Sections of this Agreement;

                 (h)      all references to Exhibits shall be deemed to be
references to the Exhibits attached hereto which are made a part hereof and
incorporated herein by reference;

                 (i)      the word "including" (and with correlative meaning
"include") means including, without limiting the generality of any description
preceding such term;

                 (j)      with respect to the determination of any period of
time, the word "from" means "from and including" and the words "to" and "until"
each means "to but excluding";

                 (k)      the captions and headings contained in this Agreement
shall not be considered or given any effect in construing the provisions hereof
if any question of intent should arise;

                 (l)      reference to any Law means such Law as amended,
modified, codified, reenacted, supplemented or superseded in whole or in part,
and in effect from time to time;

                 (m)      references to sections of the Code shall be construed
to also refer to any successor sections.





                                      -12-
<PAGE>   45
                 (n)      accounting terms used but not defined herein shall be
construed in accordance with GAAP, and whenever the character or amount of any
Asset, Liability or item of income or expense is required to be determined, or
any consolidation or accounting computation is required to be made, such
determination or computation shall be made in accordance with GAAP;

                 (o)      where any provision of this Agreement refers to
action to be taken by any Person, or which such Person is prohibited from
taking, such provision shall be applicable whether such action is taken
directly or indirectly by such Person;

                 (p)      a Claim shall be deemed to be threatened against or
with respect to any Person if any demand or statement shall have been made to
such Person (orally or in writing) or any notice shall have been given to such
Person (orally or in writing) that could reasonably be expected to lead such
Person prudently to conclude that there is a reasonable possibility that such a
Claim will be asserted, commenced, taken or otherwise pursued against or with
respect to such Person in the future; and

                 (q)      no provision of this Agreement shall be interpreted
or construed against any Member solely because that Member or its legal
representative drafted such provision.

                                 ARTICLE VI

                                ORGANIZATION

                 Section  6.01    Formation.  The Company has been or will be
organized as a Delaware limited liability company by the filing of a
Certificate of Formation in the form attached hereto as Exhibit C (the
"Certificate of Formation") under and pursuant to the Act and the issuance of a
Certificate of Formation certified by the Secretary of State.  Except as
otherwise specifically provided in this Agreement, the Members shall have the
rights and Liabilities specified in the Act.

                 Section  6.02    Name.  The name of the Company is "ANEXCO,
LLC" and all business of the Company shall be conducted in that name or such
other names as the Board may select that comply with applicable Law.

                 Section  6.03    Offices; Registered Agent.  The registered
office of the Company required by the Act to be maintained in the State of
Delaware shall be the office of the initial registered agent named in the
Certificate of Formation or such other office (which need not be a place of
business of the Company) as the Board may designate in the manner provided by
Law.  The registered agent of the Company in the State of Delaware shall be the
initial registered agent named in the Certificate of Formation or such other
Person or Persons as the Board may designate in the manner provided by Law.
The principal office of the Company in the United States shall be at such place
as the Board may designate, which need not be in the State of Delaware.  The
Company may have such other offices as the Board may designate.





                                      -13-
<PAGE>   46
                 Section  6.04    Foreign Qualification.  Prior to the
Company's conducting business in any jurisdiction other than the State of
Delaware, the Board shall cause the Company to comply, to the extent procedures
are available and those matters are reasonably within the control of the Board,
with all requirements necessary to qualify the Company as a foreign limited
liability company in that jurisdiction.  At the request of the Board, each
Member shall execute, acknowledge, swear to and deliver all certificates and
other instruments conforming with this Agreement that are necessary or
appropriate to qualify, continue or terminate the Company as a foreign limited
liability company in all such jurisdictions in which the Company may conduct or
cease conducting business, as the case may be.

                 Section  6.05    Term.  The term of the Company shall begin on
the date that the Certificate of Formation is filed with the Secretary of State
and continue thereafter until the business and affairs of the Company are wound
up following the dissolution of the Company after the first of the following
events to occur (each, a "Dissolution Event"):

                 (a)      the written consent of all of the Members;

                 (b)      any event which makes it unlawful for the business of
the Company to be continued;

                 (c)      the termination of the Joint Venture Agreement;

                 (d)      the termination of the ***  or the Production 
Agreement for any reason if, within 30 days after the effective date
of such termination, either BP or Sterling provides written notice to the
Company and the other Members of its election to have the Company dissolved and
liquidated;

                 (e)      the breach by any Member of any material covenant,
agreement, term, provision or condition of this Agreement which is not remedied
within 30 days after receipt from another Member of a written notice of such
breach if, within 10 days after the expiration of such 30-day period, the
Member that provided such notice provides written notice to the Company and the
other Members of its election to have the Company dissolved and liquidated;

                 (f)      the sale or other disposition of all of the Assets of
the Company; provided, however, that if such sale or other disposition results
in the acquisition of a receivable by the Company, then the Company shall not
dissolve until such receivable has been collected; or

                 (g)      any other event which under this Agreement or the Act
results in the dissolution of the Company.

No Member shall cause a dissolution of the Company, directly or indirectly,
except as provided for in this Section 2.05.





                                      -14-
<PAGE>   47
                 Section  6.06    No State Law Partnership.  The Members intend
that the Company not be a partnership (including a limited partnership) or
joint venture, and that, except as otherwise expressly provided in the Joint
Venture Agreement, no Member be a partner or joint venturer of any other
Member, for any purposes other than federal and state Tax purposes, and this
Agreement may not be construed to suggest otherwise.

                 Section  6.07    Title to Company Assets.  Title to the Assets
of the Company shall be deemed to be owned by the Company as an entity, and no
Member, individually or collectively, shall have any ownership interest in such
Assets or any portion thereof.  Title to any or all Assets of the Company may
be held in the name of the Company or one or more of its Affiliates, as the
Board may determine.  All Assets of the Company shall be recorded as the
property of the Company in its books and records, irrespective of the name in
which record title to any of such Assets is held.

                                   ARTICLE VII

                              PURPOSE AND BUSINESS

                 Section  7.01    Scope of Company Business.  The purpose and
business of the Company shall be to sell and distribute in the Territory,
pursuant to the provisions of the Joint Venture Agreement, acrylonitrile
produced, purchased or otherwise obtained by the Members.  In addition, the
Company may carry on any business that a company organized under the Act may
carry on that is necessary or incidental to such purpose, or otherwise
appropriate given such purpose, that is not forbidden by this Agreement or the
Act.

                 Section  7.02    Restricted Activities.  The Company shall
conduct no business other than the businesses permitted under Section 3.01.

                 Section  7.03    Customer Claims.  The Company shall have sole
responsibility for handling and resolving any Claims by its customers and other
third parties, and shall bear all costs in defense thereof, for alleged damage
to persons, property or the environment arising from the marketing and sale of
acrylonitrile and any other chemicals sold by the Company, whether supplied by
any of the Members or obtained from third parties by purchase, exchange or
otherwise, including any combination of acrylonitrile and other chemicals
commingled in terminal or other storage facilities.

                 Section  7.04    Insurance.  The Company shall procure and
maintain in full force and effect during the term of this Agreement insurance
coverage of such types and in such amounts as may be deemed advisable by the
Board, from time to time, insuring against the Liability risks of the Company
unless the costs of such insurance, when compared with the risks involved, are
determined by the Board to not be economically justified.





                                      -15-
<PAGE>   48
                 Section  7.05    Health, Safety and Environmental Compliance.
The Company shall at all times comply in all material respects with any and all
applicable Laws and permits and orders of Governmental Authorities pertaining
to health, safety and the environment and with any applicable policies and
procedures established by BP or its parent company pertaining thereto.

                 Section  7.06    Affiliate Transactions.  No Contract between
the Company and a Member or any of its Affiliates which is approved by the
Board shall be deemed to constitute a breach of such Member's obligations to
the Company, including duties of loyalty, care and good faith under the Act and
such other duties as may be imposed under the Act or any other applicable Law.

                 Section  7.07    Conflicts of Interest.  Subject to the
express provisions of this Agreement and the Joint Venture Agreement, each
Member, Manager and officer of the Company and each of their respective
Affiliates may engage in and possess interests in other business ventures of
any and every type and description, independently or with others (other than,
to the extent not specifically permitted in the Joint Venture Agreement,
business ventures which compete with the Company in the Territory), with no
obligation to offer the Company or any other Member, Manager or officer of the
Company or any of their respective Affiliates the right to participate therein.

                                ARTICLE VIII

                                 MEMBERSHIP

                 Section  8.01    Initial Members.  The initial Members of the
Company are Sterling and BP, each of which is admitted to the Company as a
Member effective contemporaneously with the execution by Sterling and BP of
this Agreement.  The respective name, address, Percentage Interest and Capital
Contribution of each Member is set forth on Exhibit B hereto.  The Membership
Interest of each Member shall be personal property for all purposes.

                 Section  8.02    Additional Members.  Additional Persons may
be admitted to the Company and Membership Interests may be created and issued
to those Persons and to existing Members with the consent of the Members.  The
admission of such Person(s) to the Company and the creation of such Membership
Interests shall be on such terms and conditions as the Members may agree at the
time of admission.  The terms of admission or issuance must specify the
Percentage Interest applicable to the new Membership Interest and may provide
for the creation of different classes or groups of Members having different
rights, powers and duties.  The Members shall reflect the creation of any new
class or group of Members in an amendment to this Agreement which indicates the
different rights, powers and duties.  No such admission shall be recognized by
the Company for any purpose until the Company and each of the Members has
received a document executed by the Person to be admitted to the Company as a
Member which includes the address and numbers of the Person to be admitted to
the Company as a Member for notification purposes, such Person's agreement to
be bound by this Agreement in respect of the Membership Interest acquired and
such representations and warranties of such Person as the Company or the
members may reasonably request.





                                      -16-
<PAGE>   49
                 Section  8.03    Interests in a Member.  A Member that is not
a natural Person may not cause or permit an interest, direct or indirect, in
itself to be disposed of such that, after the disposition, the Company would be
considered to have terminated within the meaning of Section 708 of the Code.

                 Section  8.04    Lack of Authority.  Except as otherwise
provided herein, no Member has the authority or power to (a) act for or on
behalf of the Company, (b) bind the Company in any respect or (c) incur any
expenditure on behalf of the Company.

                 Section  8.05    Withdrawal of Members; Bankrupt Members.  (a)
No Member may withdraw from the Company prior to the dissolution of the
Company, the completion of the winding up of the affairs of the Company and the
liquidation (and/or distribution, as the case may be) of the Assets of the
Company pursuant to the provisions of Article XI and, thereafter, each Member
shall be entitled to receive those amounts (and only those amounts), if any,
which are distributable to it pursuant to the provisions of Article XI.  No
Bankruptcy or dissolution or other occurrence with respect to, or act of, a
Member shall dissolve the Company.  If a Member dissolves, the legal
representative of such Member may exercise all of its rights for the purpose of
administering its Assets, including (but subject to the provisions of this
Agreement) any power it has to assign its Membership Interest and to give an
assignee the right to become a Member of the Company.  All Persons who are
liable for the obligations of any Member shall continue to be liable for the
Liabilities of the Member notwithstanding the Bankruptcy or dissolution of such
Member.

                 (b)      Upon the Bankruptcy of any Member, the Company shall
have the option, exercisable by notice from the Company to such Member (a
"Bankrupt Member") at any time prior to the 180th day after receipt of notice
of the occurrence of an event causing it to become a Bankrupt Member, to buy,
and on the exercise of such option the Bankrupt Member (or its representative)
shall sell to the Company, the Bankrupt Member's Membership Interest.  The
purchase price for such Membership Interest shall be an amount equal to the
fair market value of the Membership Interest as determined by agreement of the
Bankrupt Member (or its representative) and the Company; provided, however,
that if the Bankrupt Member (or its representative) and the Company do not
agree on the fair market value on or before the 30th day following the exercise
of the option, either the Bankrupt Member (or its representative) or the
Company may require the determination of the fair market value to be made by an
independent appraiser specified in a notice made to the other.  If the Bankrupt
Member (or its representative) or the Company receiving such notice objects, on
or before the tenth day following receipt of the notice, to the designation of
the independent appraiser named in the notice, and the Bankrupt Member (or its
representative) and the Company otherwise fail to agree on an independent
appraiser, then either the Bankrupt Member (or its representative) or the
Company may petition a court of appropriate jurisdiction to designate an
appraiser.  The determination of the fair market value of the Membership
Interest made by the independent appraiser, however chosen, shall be final and
binding on all parties.





                                      -17-
<PAGE>   50
                 (c)      The Bankrupt Member and the Company shall each pay
one-half of the costs of the appraisal.  The Company shall pay the fair market
value agreed upon or determined by the appraiser in four equal cash
installments, the first such payment due on the closing of the purchase and one
of the remaining installments (together with accumulated interest on the amount
unpaid) shall be due and payable on each of the next three anniversaries of
such closing until the purchase price shall have been paid in full.  The
payments to be made to the Bankrupt Member (or its representative) under this
Section 4.05(c) are in complete liquidation and satisfaction of all the rights
and interests of the Bankrupt Member (or its representative) and of all Persons
claiming by, through or under the Bankrupt Member (or its representative) in
respect of (i) the Company, including the Membership Interest of the Bankrupt
Member, (ii) any rights in specific Assets of the Company, (iii) any rights
against the Company and (iv) insofar as the affairs of the Company are
concerned, against the other Members.  If at the time a Member becomes a
Bankrupt Member there is only one other Member, such other Member shall have
all of the rights of the Company under this Section 4.05.

                 Section  8.06    Expulsion.  A Member may not be expelled from
the Company.

                 Section  8.07    Actions Reserved to the Members.  The Board
and the President shall not have the right or power to take any of the
following actions without the prior unanimous consent of the Members:


                 (a)      any amendment or restatement of this Agreement or the
Certificate of Formation (including any change in the purpose or scope of
business activities) or the termination of this Agreement;

                 (b)      the admission of new Members to the Company, other
than as a result of a Permitted Transfer;

                 (c)      the issuance of any equity interest in the Company,
or any option, right, warrant or appreciation right relating thereto, or any
other type of equity or debt security that the Company may lawfully issue;

                 (d)      the merger or consolidation of the Company with or
into any other Person or the reorganization, recapitalization, liquidation or
dissolution of the Company;

                 (e)      any investment in, acquisition or purchase of any
stock, partnership, joint venture interest or other security of or any interest
in, or any loan, advance or contribution of capital to, any other Person;

                 (f)      any commencement of an event of Bankruptcy; and

                 (g)      any other action or series of actions which
constitutes a deviation from the stated purposes and business of the Company
under Article III.





                                      -18-
<PAGE>   51
                 Section  8.08    Annual Meetings.  The annual meeting of the
Members shall be held on such date and at such time and place as shall be
determined by the Board unless, in the case of any such annual meeting, another
date, time and/or place is fixed therefor by a majority of the Members.  At
each annual meeting of the Members, the Members shall elect members of the
Board to succeed any members of the Board whose terms have expired or are
scheduled to expire before the next annual meeting of the Members and to
transact such other business as may lawfully come before the meeting.  The
Secretary of the Company shall give at least ten days' advance notice of the
time, place and date of each annual meeting to each Member.

                 Section  8.09    Special Meetings.  Special meetings of the
Members shall be called by the Secretary of the Company upon the request of the
Chairman of the Board or the President of the Company or upon the request of at
least one of the Members.  The Secretary of the Company shall give at least 48
hours' advance notice of the time, place and date of each such special meeting,
and the purpose or purposes for which the meeting is called, to each Member.
Business transacted at any special meeting of the Members shall be limited to
the purposes stated in the notice or any waivers of notice for such meeting.

                 Section  8.10    Quorum and Voting.  The presence of a
majority of the Members shall be necessary and sufficient to constitute a
quorum for the transaction of business at all meetings of the Members.  The
vote of a majority of the Members present at any such meeting at which there is
a quorum shall decide any matter properly submitted to such meeting unless the
matter is one upon which the vote of a greater number of the Members is
required by applicable Law or by express provision of the Certificate of
Formation or this Agreement, in which case the vote of such greater number
shall govern and control the decision of such matter.  If at any meeting of the
Members there shall be less than a quorum present, a majority of the Members
present may adjourn the meeting from time to time until a quorum is obtained.
A meeting of the Members at which a quorum is initially present may continue to
transact business notwithstanding the withdrawal of Members; provided, however,
that no action of the remaining Members shall constitute the act of the Members
unless the action is approved by at least a majority of the required quorum for
the meeting or such greater number of Members as shall be required by
applicable Law or by express provision of the Certificate of Formation or this
Agreement.  Attendance by a Member at a meeting shall constitute a waiver of
notice of such meeting except where such Member attends a meeting for the
express purpose of objecting, at the beginning of the meeting, to the
transaction of any business on the grounds that the meeting is not lawfully
called or convened.

                 Section  8.11    Telephonic Meetings.  Unless otherwise
restricted by the Certificate of Formation or this Agreement, Members may
participate in a meeting by means of conference telephone or similar
communications equipment by means of which all persons participating in the
meeting can hear one another, and such participation in a meeting shall
constitute presence in person at such meeting.

                 Section  8.12    Action by Written Consent.  Any action
required or permitted to be taken at a meeting of the Members may be taken
without a meeting if a consent in writing, setting





                                      -19-
<PAGE>   52
forth the action to be taken, shall be signed by all of the Members.  All such
written consents shall be filed with the minutes of proceedings of the Members.

                 Section  8.13    Non-Liability of Members.  No Member shall be
personally liable or responsible for the Liabilities of the Company.

                                 ARTICLE IX

                                CONTRIBUTIONS

                 Section  9.01    Contributions.  (a) Unless otherwise agreed
by the Members, each Member shall deliver to the Company the Capital
Contribution described in Exhibit B contemporaneously with the execution of
this Agreement,.

                 (b)      In exchange for their Capital Contributions, the
Members shall own, hold and be entitled to Membership Interests in the Company
with the Percentage Interests shown on Exhibit B, such Membership Interests to
be subject to all of the terms, provisions and conditions of this Agreement.
Except as otherwise provided for by the Act, the Capital Contribution of each
Member shall constitute the full obligation of such Member to furnish funds or
property to the Company and no additional funds or other property shall be
required of any Member.

                 (c)      Except as otherwise provided in Section 11.07 or as
may otherwise be unanimously agreed by the Members, no Member shall be
required, nor have the right, to make additional Capital Contributions to the
Company.  All costs and expenses of the Company shall be funded out of its
revenues and, if and to the extent approved by the Board pursuant to Section
7.02, borrowing from commercial or institutional lenders, other Third Parties
or the Members or their respective Affiliates.

                 Section  9.02    Interest.  No interest shall be paid by the
Company on any Capital Contribution of any Member or on the balance in the
Capital Account of any Member.

                 Section  9.03    Return of Capital.  A Member shall not be
entitled to have any part of its Capital Contribution or its Capital Account
returned to it or to receive any distributions from the Company, except in
accordance with this Agreement or, if this Agreement is silent in respect of
any particular situation, the Act.  No Capital Contribution shall be deemed or
considered to be a Liability of the Company or any Member.  Except as otherwise
provided in Section 11.07, no Member shall be required to contribute or lend
any cash or property to the Company in order to enable the Company to return
any Member's Capital Contribution.

                 Section  9.04    Advances by Members.  Subject to Section
5.01(c), any Member (or any Affiliate of any Member) may make loans to the
Company in order to satisfy the Liabilities of the Company or further the
business of the Company.  Any such loan shall not be considered a





                                      -20-
<PAGE>   53
Capital Contribution and shall be on such terms and conditions as are
determined between the Company and the Member or Affiliate making such loan;
provided, however, that the rate of interest charged on any such loan may not
exceed the rate (including points or other financing charges or fees) that
would be charged to the Company by unrelated lenders on a comparable loan.

                 Section  9.05    Creditors of the Company.  No creditor of the
Company will have or shall acquire at any time any direct or indirect interest
in the profits, capital or Assets of the Company (other than as a secured
creditor, if applicable, as a result of making a loan to the Company which is
approved by the Board pursuant to Section 7.02).

                                  ARTICLE X

                      CAPITAL ACCOUNTS, ALLOCATIONS AND
                                DISTRIBUTIONS

                 Section  10.01    Capital Accounts.  (a) The Company shall
establish and maintain for each Member a separate Capital Account in accordance
with the rules of Treasury Regulation Section 1.704-1(b)(2)(iv).  To the extent
not inconsistent with such regulation, the Capital Account of each Member shall
be (i) increased by (A) the cash amount or Net Agreed Value of all Capital
Contributions made or deemed made to the Company by such Member pursuant to
this Agreement and (B) all items of Company income and gain (including income
and gain exempt from tax) computed in accordance with Section 6.01(b) and
allocated to such Member pursuant to Section 6.02, and (ii) decreased by (A)
the amount of cash or Net Agreed Value of all actual and deemed distributions
of cash or Assets made to such Member pursuant to this Agreement and (B) all
items of Company deduction and loss computed in accordance with Section 6.01(b)
and allocated to such Member pursuant to Section 6.02.  The Members have agreed
that the Net Agreed Value of the initial Capital Contributions made by each of
them are the amounts set forth on Exhibit B.

                 (b)      For purposes of computing the amount of any item of
income, gain, loss or deduction to be reflected in the Capital Accounts of the
Members, the determination, recognition and classification of any such item
shall be the same as its determination, recognition and classification for
federal income tax purposes (including any method or methods of depreciation,
cost recovery or amortization used for that purpose); provided, however, that:

         (i)     Except as otherwise provided in Treasury Regulation Section
1.704-1(b)(2)(iv)(m), the computation of all items of income, gain, loss and
deduction shall be made without regard to any election under Section 754 of the
Code which may be made by the Company and, as to those items described in
Section 705(a)(1)(B) or 705(a)(2)(B) of the Code, without regard to the fact
that such items are not includable in gross income or are neither currently
deductible nor capitalized for federal income tax purposes.





                                      -21-
<PAGE>   54
         (ii)    Any income, gain or loss attributable to the taxable
disposition of any Assets of the Company shall be determined as if the adjusted
basis of each such Asset as of the date of disposition was equal in amount to
the Carrying Value with respect to such Asset as of such date.

         (iii)   In accordance with the requirements of Section 704(b) of the
Code, any deductions for depreciation, cost recovery or amortization
attributable to any Contributed Property shall be determined as if the adjusted
basis of such Contributed Property on the date it was acquired by the Company
was equal to the Agreed Value of such Contributed Property.  Upon any
adjustment pursuant to Section 6.01(d) or 6.01(e) to the Carrying Value of any
Assets of the Company subject to depreciation, cost recovery or amortization,
any further deductions for such depreciation, cost recovery or amortization
attributable to such Assets shall be determined (A) as if the adjusted basis of
such Assets was initially equal to the Carrying Value of such Assets
immediately following such adjustment and (B) using a rate of depreciation,
cost recovery or amortization derived from the same method and useful life (or,
if applicable, the remaining useful life) as is applied for federal income tax
purposes; provided, however, that, if any of such Assets has a zero adjusted
basis for federal income tax purposes, depreciation, cost recovery or
amortization deductions shall be determined using any reasonable method that
the Tax Matters Member may adopt.

         (iv)    If the Company's adjusted basis in a depreciable or cost
recovery Asset is reduced for income tax purposes pursuant to Section 48(q)(1)
or 48(q)(3) of the Code, the amount of reduction shall, solely for the purposes
hereof, be deemed to be an additional depreciation or cost recovery deduction
in the fiscal year of the Company during which such Asset is placed in service
and shall be allocated among the Members pursuant to Sections 6.02, 6.03 and
6.04 and any restoration of such basis pursuant to Section 48(q)(2) of the Code
shall, to the extent possible, be allocated in the same manner to the Members
to whom such deemed deduction was allocated.

                 (c)      A transferee of a Membership Interest shall succeed
to a pro rata portion of the Capital Account of the transferor relating to the
Membership Interest so transferred.  If, however, the transfer causes a
termination of the Company under Section 708(b)(1)(B) of the Code, the Assets
of the Company shall be deemed to have been contributed to a new company which
will be deemed to be a continuation of, and successor to, the Company, and the
Company will be deemed to make liquidating distributions of the interests in
such new company to the Members (including any transferee of a Membership
Interest that is a party to the transfer causing such termination) pursuant to
Article XI.  Any such deemed distribution shall be treated as an actual
distribution for purposes of this Section 6.01.  In such event, the Carrying
Values of the Assets of the Company shall be adjusted immediately prior to such
deemed contribution and distribution pursuant to Section 6.01(e), and such
Carrying Values shall then constitute the Agreed Values of such Assets upon
such deemed contribution to the reconstituted company.  The Capital Accounts of
such reconstituted company shall be maintained in accordance with the
principles of this Section 6.01.

                 (d)      Consistent with the provisions of Treasury Regulation
Section 1.704-1(b)(2)(iv)(f), upon an issuance of additional Membership
Interests for cash or Contributed Property, the Capital Accounts of the Members
and the Carrying Value of all Assets of the Company





                                      -22-
<PAGE>   55
immediately prior to such issuance shall be adjusted upward or downward to
reflect any Unrealized Gain or Unrealized Loss attributable to such Assets, as
if such Unrealized Gain or Unrealized Loss had been recognized on a sale of
such Assets immediately prior to such contribution for an amount equal to its
fair market value.  Any Unrealized Gain or Unrealized Loss attributable to such
Assets shall be allocated in the manner set forth in Section 6.02(b).  In
determining such Unrealized Gain or Unrealized Loss, the aggregate cash amount
and fair market value of all Assets of the Company (including cash or cash
equivalents) immediately prior to the issuance of additional Membership
Interests shall be determined by the Tax Matters Member using such reasonable
method of valuation as it may adopt.

                 (e)      In accordance with Treasury Regulation Section
1.704-1(b)(2)(iv)(f), immediately prior to any actual or deemed distribution to
a Member of any Assets of the Company (other than a distribution of cash that
is not in redemption or retirement of a Membership Interest), the Capital
Accounts of all Members and the Carrying Value of all Assets of the Company
shall be adjusted upward or downward to reflect any Unrealized Gain or
Unrealized Loss attributable to such Assets, as if such Unrealized Gain or
Unrealized Loss had been recognized on a sale of such Assets immediately prior
to such distribution for an amount equal to its fair market value.  Any
Unrealized Gain or Unrealized Loss attributable to such Assets shall be
allocated in the same manner as set forth in Section 6.02(b).  In determining
such Unrealized Gain or Unrealized Loss, the aggregate cash amount and fair
market value of all Assets of the Company (including cash or cash equivalents)
immediately prior to a distribution shall be determined and allocated among
such Assets by the Tax Matters Member using such reasonable method of valuation
as it may adopt.

                 (f)      If the Company's items of income, gain, loss or
deduction are adjusted by any taxing authority by reason of a transaction
between the Company and a member of a group of organizations under common
ownership or control (of which the Company is also a member), including
adjustments pursuant to Section 482 of the Code or any similar provisions under
state, local or foreign Law (any such adjustment, a "Tax Adjustment") and such
Tax Adjustment results in a deemed Capital Contribution to the Company by any
Member or a deemed distribution by the Company to any Member, (i) the Capital
Account of any Member that is deemed to have made any such Capital Contribution
shall be increased by the amount of such Capital Contribution and (ii) the
Capital Account of any Member that is deemed to have received any such deemed
distribution shall be reduced by the amount of such distribution.  In general,
the adjustments to Capital Accounts pursuant to this Section 6.01(f) are
intended to cause, after taking into account the adjustments to Capital
Accounts pursuant to this Section 6.01(f) and Section 6.02(c)(ix), the balance
in each Member's Capital Account, to the extent possible, to be equal to the
balance which would have been in such Capital Account if no Tax Adjustment had
occurred.

                 Section 6.02.  Allocations for Capital Account Purposes.  (a)
For purposes of allocating among the Members the items computed under Section
6.01(b) to be reflected in the Capital Accounts of the Members, subject to the
special allocations set forth in Section 6.02(c), all items of income, gain,
loss, deduction and credit of the Company taken into account in computing Net
Income or Net Loss with respect to any fiscal year of the Company, shall be
allocated among





                                      -23-
<PAGE>   56
the Members in each fiscal year of the Company (or portion thereof) in
accordance with their Percentage Interests. For purposes of allocating items of
income, gain, loss, deduction and credit among the Members in any fiscal year
of the Company during which the Percentage Interests of the Members change as a
result of any event, such items shall be allocated as if the books of the
Company were closed on the date of such change in Percentage Interests.

                 (b)      After giving effect to the special allocations set
forth in 6.02(c), all items of income, gain, loss and deduction taken into
account in computing Net Termination Gain or Net Termination Loss for the
fiscal year that includes the date on which the Company is liquidated (and any
subsequent fiscal year) shall be allocated in the same manner as such Net
Termination Gain or Net Termination Loss is allocated hereunder.  All
allocations under this Section 6.02(b) shall be made after balances of the
Capital Accounts have been adjusted by all other allocations provided under
this Section 6.02 and after all distributions provided under Section 6.04 have
been made.

                 If a Net Termination Gain is recognized (or deemed recognized
pursuant to Section 6.01(d) or (e)), such Net Termination Gain shall be
allocated among the Members in the following manner (and the Capital Accounts
of the Members shall be increased by the amount so allocated in each of the
following subclauses, in the order listed, before an allocation is made
pursuant to the next succeeding subclause):

         (i)     first, to each Member having a deficit balance in its Capital
Account, in the proportion that such deficit balance bears to the total deficit
balances in the Capital Accounts of all Members, until each such Member has
been allocated Net Termination Gain equal to any such deficit balance in its
Capital Account;

         (ii)    second, 100% to the Members whose Capital Accounts have a
balance which is less than the product of (A) the Percentage Interest of such
Member times (B) the total balance of the Capital Accounts of all Members
until, to the extent possible, the relative ratios of the balances of the
Capital Accounts of the Members are equal to their respective Percentage
Interests; and

         (iii)   third, to the Members in accordance with their respective
Percentage Interests.

                 If a Net Termination Loss is recognized (or deemed recognized
pursuant to Section 6.01(d) or 6.01(e)), such Net Termination Loss shall be
allocated among the Members in the following manner (and the Capital Accounts
of the Members shall be decreased by the amount so allocated in each of the
following subclauses, in the order listed, before an allocation is made
pursuant to the next succeeding subclause):

         (i)     first, 100% to the Members whose Capital Accounts have a
balance which is greater than the product of (A) the Percentage Interest of
such Members times (B) the total of the balances of the Capital Accounts of all
Members until, to the extent possible, the relative ratios of the balances of
the Capital Accounts of the Members are equal to their respective Percentage
Interests; and





                                      -24-
<PAGE>   57
         (ii)    second, to the Members in accordance with their respective
Percentage Interests.

                 (c)      Notwithstanding the foregoing, the following special
allocations shall be made:

         (i)     Notwithstanding any other provision of this Section 6.02, if
there is a net decrease in the amount of any Partnership Minimum Gain during
any taxable year of the Company, each Member shall be allocated items of income
and gain of the Company for such period (and, if necessary, subsequent periods)
in the manner and amounts provided in Treasury Regulation Sections
1.704-2(f)(6), 1.704-2(g)(2) and 1.704-2(j)(2)(i), or any successor provision.
For purposes of this Section 6.02(c), the balance of the Adjusted Capital
Account of each Member shall be determined, and the allocation of income or
gain required hereunder shall be effected, prior to the application of any
other allocations pursuant to this Section 6.02(c) with respect to such taxable
year (other than an allocation pursuant to Sections 6.02(c)(v) and
6.02(c)(vi)).  This Section 6.02(c)(i) is intended to comply with the minimum
gain chargeback requirement of Treasury Regulation Section 1.704-2(f) and shall
be interpreted and applied in a manner consistently therewith.

         (ii)    Notwithstanding any other provision of this Section 6.02
(other than Section 6.02(c)(i)), except as provided in Treasury Regulation
Section 1.704-2(i)(4), if there is a net decrease in the amount of any Partner
Nonrecourse Debt Minimum Gain during any taxable year of the Company, any
Member with a share of Partner Nonrecourse Debt Minimum Gain at the beginning
of such taxable year shall be allocated items of income and gain of the Company
for such period (and, if necessary, subsequent periods) in the manner and
amounts provided in Treasury Regulation Sections 1.704-2(i)(4) and
1.704-2(j)(2)(ii), or any successor provisions.  For purposes of this Section
6.02(c), the balance of the Adjusted Capital Account of each Member shall be
determined, and the allocation of income or gain required hereunder shall be
effected, prior to the application of any other allocations pursuant to this
Section 6.02(c), other than Section 6.02(c)(i) and other than an allocation
pursuant to Sections 6.02(c)(v) and 6.02(c)(vi), with respect to such taxable
period.  This Section 6.02(c)(ii) is intended to comply with the minimum gain
chargeback requirements of Treasury Regulation Section 1.704-2(i)(4) and shall
be interpreted and applied consistently therewith.

         (iii)   If any Member unexpectedly receives any adjustments,
allocations or distributions described in Treasury Regulation Sections
1.704-1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5) or 1.704-1(b)(2)(ii)(d)(6),
items of income and gain of the Company shall be specially allocated to such
Member in an amount and manner sufficient to eliminate, to the extent required
by the Treasury Regulations promulgated under Section 704(b) of the Code, the
deficit balance, if any, in the Adjusted Capital Account of such Member created
by such adjustments, allocations or distributions as quickly as possible.

         (iv)    In the event that any Member has a deficit balance in its
Adjusted Capital Account at the end of any taxable period of the Company, such
Member shall be specially allocated items of gross income and gain of the
Company in the amount of such excess as quickly as possible;





                                      -25-
<PAGE>   58
provided, however, that an allocation pursuant to this Section 6.02(c)(iv)
shall be made only if and to the extent that such Member would have a deficit
balance in its Adjusted Capital Account after all other allocations provided
for in this Section 6.02 have been tentatively made as if this Section
6.02(c)(iv) were not in this Agreement.

         (v)     Nonrecourse Deductions for any taxable period shall be
allocated to the Members in accordance with their Percentage Interests.  If the
Tax Matters Member determines in its good faith discretion that the Nonrecourse
Deductions of the Company must be allocated in a different ratio to satisfy the
safe harbor requirements of the Treasury Regulations promulgated under Section
704(b) of the Code, the Tax Matters Member is authorized, upon notice to the
other Members, to revise the prescribed ratio to the numerically closest ratio
that does satisfy such requirements.

         (vi)    Partner Nonrecourse Deductions for any taxable period shall be
allocated 100% to the Member that bears the Economic Risk of Loss with respect
to the Partner Nonrecourse Debt to which such Partner Nonrecourse Deductions
are attributable in accordance with Treasury Regulation Section 1.704-2(i).  If
more than one Member bears the Economic Risk of Loss with respect to a Partner
Nonrecourse Debt, such Partner Nonrecourse Deductions attributable thereto
shall be allocated between or among such Members in accordance with the ratios
in which they share such Economic Risk of Loss.

         (vii)   For purposes of Treasury Regulation Section 1.752-3(a)(3), the
Members agree that Nonrecourse Liabilities of the Company in excess of the sum
of (A) the amount of Partnership Minimum Gain and (B) the total amount of
Nonrecourse Built-in Gain shall be allocated among the Members in accordance
with the manner in which it is reasonably expected that the deductions
attributable to those excess Nonrecourse Liabilities will be allocated.

         (viii)  To the extent an adjustment to the adjusted tax basis of any
Asset of the Company pursuant to Section 734(b) or 743(b) of the Code is
required, pursuant to Treasury Regulation Section 1.704-1(b)(2)(iv)(m), to be
taken into account in determining Capital Accounts, the amount of such
adjustment to the Capital Accounts shall treated as an item of gain (if the
adjustment increases the basis of the Asset) or loss (if the adjustment
decreases such basis), and such item of gain or loss shall be specially
allocated to the Members in a manner consistent with the manner in which their
respective Capital Accounts are required to be adjusted pursuant to such
Section of the Treasury Regulations.

         (ix)    In the event that a deduction or loss is imputed to the
Company as a result of the imputation of income or gain to any Member by any
taxing authority, such resulting deduction or loss shall be allocated among the
Members in the same proportion as the Members are required to recognize the
corresponding income or gain.  In the event that income or gain is imputed to
the Company as a result of the imputation of a deduction or loss to any Member,
such resulting income or gain shall be allocated among the Members in the same
proportion as the Members are required to recognize the corresponding deduction
or loss.  In general, the allocations pursuant to this Section 6.02(c)(ix), are
intended to cause, after taking into account this Section 6.02(c)(ix) and the





                                      -26-
<PAGE>   59
adjustments to Capital Accounts pursuant to Section 6.01(f), the balance of the
Capital Account of each Member, to the extent possible, to be equal to the
balance such Capital Account would have had if no Tax Adjustment had occurred.

         (x)     Notwithstanding any other provision of this Section 6.02,
other than the Required Allocations, the Required Allocations shall be taken
into account in making the Agreed Allocations so that, to the extent possible,
the net amount of items of income, gain, loss and deduction allocated to each
Member pursuant to the Required Allocations and the Agreed Allocations,
together, shall be equal to the net amount of such items that would have been
allocated to each such Member under the Agreed Allocations had the Required
Allocations and the related Curative Allocations not otherwise been provided in
this Section 6.02.  Notwithstanding the preceding sentence, Required
Allocations relating to (A) Nonrecourse Deductions shall not be taken into
account except to the extent that there has been a decrease in Partnership
Minimum Gain and (B) Partner Nonrecourse Deductions shall not be taken into
account except to the extent that there has been a decrease in Partner
Nonrecourse Debt Minimum Gain.  Allocations pursuant to this Section 6.02(c)(x)
shall only be made with respect to Required Allocations to the extent that the
Tax Matters Member reasonably determines that such Required Allocations will
otherwise be inconsistent with the economic agreement among the Members.
Further, allocations pursuant to this Section 6.02(c)(x) shall be deferred with
respect to allocations pursuant to clauses (A) and (B) hereof to the extent the
Tax Matters Member reasonably determines that such allocations are likely to be
offset by subsequent Required Allocations.

                 Section 6.03.  Allocations for Tax Purposes.  (a)  Except as
otherwise provided herein, for tax purposes, each item of income, gain, loss
and deduction shall be allocated among the Members in the same manner as its
correlative item of "book" income, gain, loss or deduction is allocated
pursuant to Section 6.02.

                 (b)      In an attempt to eliminate Book-Tax Disparities
attributable to a Contributed Property or Adjusted Property, items of income,
gain, loss, depreciation, amortization and cost recovery deductions shall be
allocated for tax purposes among the Members as follows:

         (i) (A) in the case of a Contributed Property, such items attributable
thereto shall be allocated among the Members in the manner provided under
Section 704(c) of the Code that takes into account the variation between the
Agreed Value of such Contributed Property and its adjusted basis at the time of
contribution; and

         (B)     except as otherwise provided in Section 6.03(b)(iii), any item
of Residual Gain or Residual Loss attributable to a Contributed Property shall
be allocated among the Members in the same manner as its correlative item of
"book" gain or loss is allocated pursuant to Section 6.02(a);

         (ii) (A)  in the case of an Adjusted Property, such items shall (x)
first, be allocated among the Members in a manner consistent with the
principles of Section 704(c) of the Code to take into account the Unrealized
Gain or Unrealized Loss attributable to such Adjusted Property and the





                                      -27-
<PAGE>   60
allocations thereof pursuant to Section 6.01(d) or 6.01(e), and (y) second, in
the event such Adjusted Property was originally a Contributed Property, be
allocated among the Members in a manner consistent with Section 6.03(b)(i); and

         (B)     except as otherwise provided in Section 6.03(b)(iii), any item
of Residual Gain or Residual Loss attributable to an Adjusted Property shall be
allocated among the Members in the same manner as its correlative item of
"book" gain or loss is allocated pursuant to Section 6.02(a);

         (iii)   any items of income, gain, loss, or deduction otherwise
allocable under Sections 6.03(a), 6.03(b)(i)(B) or 6.03(b)(ii)(B), at the
election of the Tax Matters Member, shall be subject to allocation in the
manner allowed under Treasury Regulation Section 1.704-3 to eliminate Book-Tax
Disparities in a Contributed Property or Adjusted Property otherwise resulting
from the application of the "ceiling" limitation (under Section 704(c) of the
Code or related principles) to the allocations provided under Sections
6.03(b)(i)(A) or 6.03(b)(ii)(A);

         (iv)    notwithstanding anything to the contrary contained in this
Agreement, the Company shall not elect to eliminate Book-Tax Disparities
pursuant to Treasury Regulation Section 1.704-3(d) and shall limit the curative
allocations under Treasury Regulation Section 1.704-3(c) to income, gain, loss
and deductions attributable to Assets of the Company with respect to which the
Book-Tax Disparity exists; and

         (v)     notwithstanding anything to the contrary contained in this
Agreement, it is not intended that items of income or gain be allocated under
this Section 6.03(b) and Treasury Regulation Section 1.704-3 with respect to an
intangible Asset of the Company that is not an "amortizable section 197
intangible" under Section 197(f)(9) of the Code, even though the Tax Matters
Member may elect, pursuant to Section 6.01(b)(iii), to amortize the Carrying
Value with respect to such intangible Asset for purposes of maintaining the
Capital Accounts of the Members.

                 (c)      Any gain allocated to the Members upon the sale or
other taxable disposition of any Asset of the Company shall, to the extent
possible, after taking into account other required allocations of gain pursuant
to this Section 6.03, be characterized as Recapture Income in the same
proportions and to the same extent as such Member (or their predecessors in
interest) have been allocated any deductions directly or indirectly giving rise
to the treatment of such gains as Recapture Income.

                 (d)      All items of income, gain, loss, deduction and credit
recognized by the Company for tax purposes and allocated to the Members in
accordance with the provisions hereof shall be determined without regard to any
election under Section 754 of the Code which may be made by the Company;
provided, however, that such allocations, once made, shall be adjusted as
necessary or appropriate to take into account those adjustments permitted or
required by Sections 734 and 743 of the Code.





                                      -28-
<PAGE>   61
                 (e)      As between a transferor and transferee of any
Membership Interest, each item of income, gain, loss, deduction or credit
attributable to the transferred Membership Interest shall, for tax purposes, be
allocated among the transferor and transferee as if the books of the Company
were closed on the date of the transfer and (i) all items of income, gain,
loss, deduction or credit attributable to the period ending on or before the
date of the transfer shall be allocated to the transferor and (ii) all items of
income, gain, loss, deduction or credit attributable to the period beginning on
the day after the date of the transfer shall be allocated to the transferee.

                 Section 6.04.  Distributions.  At such time or times as the
Board determines, the Company shall make distributions of cash to the Members
in proportion to their respective Membership Interests on the date of such
distribution.

                 Section 6.05.  Distributions in Kind.  The Company may
distribute Assets of the Company to the Members in kind as the Members may
unanimously agree.  All distributions of Assets of the Company in kind (other
than in connection with the winding up and liquidation of the Company) shall be
made in proportion to the respective Percentage Interests of the Members on the
date of any such distribution and may be (as the Members specifically provide)
subject to existing Liabilities.

                 Section 6.06.  Limitations on Distributions.  Notwithstanding
anything to the contrary contained in this Agreement, the Company shall not
make any distribution of any of its Assets to a Member to the extent that such
distribution is not permitted under the Act; provided, however, that a Member
who receives a distribution of any Assets of the Company that is not permitted
under the terms of Section 18-607 of the Act shall have no Liability under the
Act or this Agreement to return such distribution unless the Member knew that
such distribution violated the terms of such Section.

                                  ARTICLE VII

                               Board of Managers

                 Section 7.01.  Management.  Except as otherwise provided by
applicable Law or by express provision of the Certificate of Formation or this
Agreement, the direction and management of the affairs of the Company and the
control and disposition of its Assets shall be vested in a board of managers
(the "Board").  In addition to the powers and authorities expressly conferred
upon the Board by this Agreement, the Board may exercise all the powers of the
Company and do all such lawful acts and things as are not by applicable Law,
the Certificate of Formation or this Agreement directed or required to be
exercised or done by the Members.

                 Section 7.02.  Actions Requiring Board Approval.  The Company
may not take any of the following actions unless such action is required by
this Agreement or has been approved by a majority of the Whole Board:





                                      -29-
<PAGE>   62
         (a)     any amendment to the Certificate of Formation of the Company
or this Agreement, including any change in the name of the Company or its
purpose, scope or structure;

         (b)     adoption of the Company's financial statements and business
reports;

         (c)     any change in the Capital Contributions or Capital Accounts of
the Members;

         (d)     approval of the Annual Business Plan or any material revision
to the Annual Business Plan;

         (e)     any making of, or any commitment to make, any Major
Expenditure or Major Acquisition;

         (f)     any borrowing of funds by the Company from any Member or any
other Person or the issuance of any bonds, debentures or other debt or equity
securities;

         (g)     the sale, transfer, lease or otherwise disposition of any
Asset of the Company (other than pursuant to a Contract entered into pursuant
to an Annual Business Plan) if the aggregate fair market value of the Assets
disposed of in a single transaction exceeds $75,000;

         (h)     the incurrence of any Lien (other than a Permitted Lien) on
any Asset of the Company;

         (i)     the discontinuation of the business of the Company or the
liquidation of the Company;

         (j)     any action which would constitute an event of Bankruptcy with
respect to the Company;

         (k)     any change in the distribution of the profits or retained
earnings of the Company;

         (l)     the initiation of any litigation or arbitration or other
proceedings, or the settlement of any disputes, involving Claims in excess of
$75,000;

         (m)     the appointment of any successor to the President; and

         (n)     the selection of a firm of independent certified public
accountants to audit the books of account of the Company and outside attorneys
to represent the Company.

In the event that a majority of the Board fails to approve or disapprove of any
of the foregoing matters which is submitted to the Board for its consideration
within 30 days of its submission to the Board, the Representatives shall
promptly, but in any event within ten days after the expiration of





                                      -30-
<PAGE>   63
such 30-day period, advise their respective chief executive officers ("CEOs")
of such failure and submit such matter to their respective CEOs for resolution.

                 Section 7.03.  Number, Qualification and Term of Office.  (a)
Until the number of Managers constituting the whole Board is changed by an
amendment to this Agreement, the number of Managers constituting the whole
Board (the "Whole Board") shall be ***.  Each Representative shall (i) be a
director, officer or employee of the Member that appointed such Representative
(or an Affiliate of such Member) and (ii) be the agent of the Member that
designated such Representative.  Accordingly, (A) each Representative shall act
(or refrain from acting) with respect to the business and affairs of the
Company solely in accordance with the wishes of the Member that designated such
Representative and (B) no Representative shall owe (or be deemed to owe) any
duty (fiduciary or otherwise) to the Company or to any Member other than the
Member that designated such Representative; provided, however, that nothing
contained in this Agreement is intended to or shall relieve or discharge any
Representative or Member from liability to the Company or the Members on
account of any fraudulent or intentional misconduct of or a knowing violation
of Law by such Representative or any transaction from which a Manager derived
an improper personal benefit and, provided further, that each Representative
shall not disclose any material information regarding the business of the
Company and shall not use such information, in either case, in any manner not
related to the business of the Company.

                 (b)      No decrease in the number of Managers shall have the
effect of requiring the removal of, or shortening the term of, any Manager then
in office.  No Manager needs to be a Member or a resident of the State of
Delaware.

                 (c)      Each Manager shall serve for a term of office
commencing on the effective date of his or her appointment until the first
annual meeting of the Members held after the effective date of his or her
appointment and until his or her successor shall have been duly appointed and
qualified or until his or her earlier death, resignation or removal.  Any
Manager whose term of office is scheduled to expire may be appointed to succeed
himself or herself.

                 Section 7.04.  Appointments.  Appointments of persons to the
Board shall be made by BP (in the case of the BP Representatives) and by
Sterling (in the case of the Sterling Representatives).  Appointments to the
Board by a Member shall be set forth in a notice to the Board and the other
Members, each such notice to set forth the exact name of each person so
appointed and such person's age, principal occupation, business and residence
address and telephone number.  Notwithstanding anything in this Agreement to
the contrary, only persons who are appointed to the Board in accordance with
the procedures set forth in this Section 7.04 (or who are appointed pursuant to
Section 7.07 below) shall be appointed as Managers.

                 Section 7.05.  Resignation.  Each Manager shall have the right
to resign at any time upon written notice thereof to the Board or the President
of the Company.  Unless otherwise specified in the notice, any such resignation
shall take effect upon receipt thereof, and the acceptance of such resignation
shall not be necessary to make it effective.





                                      -31-
<PAGE>   64
                 Section 7.06.  Removal.  BP may remove any BP Representative
at any time, with or without cause, and Sterling may remove any Sterling
Representative at any time, with or without cause.  The Board may not remove
any Manager.  Except as otherwise provided in this Section 7.06, a Manager may
not be removed prior to expiration of his or her term as Manager.

                 Section 7.07.  Vacancies.  A vacancy shall be declared in any
seat on the Board upon (a) the death, resignation or removal of the occupant
thereof or (b) any increase in the number of Managers in accordance with this
Agreement.  Any vacancy occurring in the Board which results from the death,
resignation or removal of a BP Representative may only be filled by BP and any
vacancy occurring the Board which results from the death, resignation or
removal of a Sterling Representative may only be filled by Sterling.  Any
Manager so elected shall serve for the remaining portion of the term of the
Manager whose death, resignation or removal resulted in such vacancy and until
his or her successor shall have been duly elected and qualified or until his or
her earlier death, resignation or removal.  In the event that the number of
Managers constituting the Board is increased, the vacancy resulting from such
increase may only be filled by a majority of the Managers then in office and
any Manager so appointed shall serve until his or her successor shall have been
duly elected and qualified or until his or her earlier death, resignation or
removal.

                 Section 7.08.  Regular Meetings.  The annual meeting of the
Board shall be held on such date and at such time and place as the Board shall
from time to time determine. At each annual meeting of the Board, the Board
shall (a) subject to Section 8.01, elect officers of the Company to succeed any
officers whose terms of office are scheduled to expire and (b) transact such
other business as may lawfully come before the meeting.  The annual meeting of
the Board shall be deemed to be a regular meeting.  Additional regular meetings
of the Board shall be held on such dates and at such times and places as the
Board shall from time to time determine; provided, however, that (i) the Board
shall have at least four regular meetings during each calendar year and (ii) at
least two of such meetings shall be held in person (i.e., without any
participation by members of the Board by means of conference telephone or
similar communications equipment).  At each additional regular meeting of the
Board, the Board shall transact such business as may lawfully come before such
meeting.  The Secretary of the Company shall give at least 30 days' advance
notice of the time, place and date of each regular meeting to each Manager,
which notice shall include the agenda for the meeting.  Any Member may, with at
least one business day's advance notice, add items to the agenda for the
meeting; provided, however, that if the item of business is approval of any
matter described in Section 7.02 above, the other Managers must receive at
least 30 days' advance notice that such item will be considered at the meeting.
Unless otherwise agreed by a majority of the Whole Board, the only matters
which will be considered at a regular meeting of the Board shall be those items
set forth in the agenda provided with the notice of the meeting and any items
added to such agenda by a Member in accordance with the notice provisions of
this Section 7.08.  Each Manager shall be solely responsible for the payment of
any and all costs and expenses incurred in connection with the participation by
such Manager in or at any regular meeting of the Board.





                                      -32-
<PAGE>   65
                 Section 7.09.  Special Meetings.  Special meetings of the
Board shall be held whenever called by the Secretary of the Company upon the
request of the Chairman of the Board or the President of the Company or upon
the request of at least one of the BP Representatives and at least one of the
Sterling Representatives.  The Secretary of the Company shall give at least 48
hours' advance notice of the date, time, place and purpose of each such special
meeting to each Manager.  Business transacted at any special meeting of the
Board shall be limited to the purposes stated in the notice or any waivers of
notice of such meeting.  Each Manager shall be solely responsible for the
payment of any and all costs and expenses incurred in connection with the
participation by such Manager in or at any special meeting of the Board.

                 Section 7.10.  Discussions Among Members and Representatives.
Each of the Members acknowledges and agrees that it will not, and will cause
its Representatives to not, disclose to or discuss with any other Member or any
Representatives of any other Member, information regarding such Member's
operations and related to any of the following matters:

         (a)     prices, pricing formulas, discounts, credit terms or any other
Contract terms or conditions of sale with respect to the sale of any product,
co-product or by-product in the United States, Canada or Mexico;

         (b)     markets, customers or marketing strategies for the sale of
products, co-products or by-products in the United States, Canada or Mexico,
including any refusal to deal with any customer or potential customer;

         (c)     sales results for products, co-products or by-products in the
United States, Mexico or Canada;

         (d)     imports of products, co-products or by-products into the
United States, Mexico or Canada;

         (e)     profits projections or analyses in the United States, Canada
or Mexico;

         (f)     confidential, individual statistical data or competitive plans
or forecasts for the United States, Mexico or Canada; or

         (g)     bids or an intent to bid or not bid for any Contract,
standardization of bidding or any other kind of communication with respect to
bidding or not bidding for Contracts in the United States, Mexico or Canada;

provided, however, that the foregoing restriction shall not apply to the
disclosure or discussion of any information to the extent that such information
is in the public domain and such disclosure or discussion is limited to
purposes which are reasonably necessary for the exporting activities of the
Company.  In addition, each of the Members acknowledges and agrees that it will
not, and will cause its Representatives to not, discuss any business of the
Company through informal meetings or other





                                      -33-
<PAGE>   66
interactions with any other Member or any Representatives of any other Member,
it being the intention of the Members that all such discussions shall take
place at meetings of the Board.

                 Section 7.11.  Quorum and Voting.  The presence of a majority
of the Whole Board, in person or by proxy, shall be necessary and sufficient to
constitute a quorum for the transaction of business at all meetings of the
Board.  The vote of a majority of the Whole Board at any such meeting at which
there is a quorum shall decide any matter properly submitted to such meeting
unless the matter is one upon which the vote of a greater number of the
Managers is required by applicable law or by express provision of the
Certificate of Formation or this Agreement, in which event the vote of such
greater number shall govern and control the decision of such matter.   If at
any meeting of the Board there shall be less than a quorum present, a majority
of the Managers present may adjourn the meeting from time to time until a
quorum is obtained.  A meeting of the Board at which a quorum is initially
present may continue to transact business notwithstanding the withdrawal of
Managers; provided, however, that no action of the remaining Managers shall
constitute the act of the Board unless the action is approved by at least a
majority of the Whole Board or such greater number of Managers as shall be
required by applicable Law or by express provision of the Certificate of
Formation or this Agreement.  Attendance by a Manager at a meeting shall
constitute a waiver of notice of such meeting except where such Manager attends
a meeting for the express purpose of objecting, at the beginning of the
meeting, to the transaction of any business on the grounds that the meeting is
not lawfully called or convened.

                 Section 7.12.  Proxies.  (a)  Each Manager may, by a proxy
executed in writing by such Manager or by his or her duly authorized
attorney-in-fact, authorize another person or persons to act for him or her, to
vote at any meeting of the Board or to express consent or dissent to any action
of the Company without a meeting.  Each such proxy shall be filed with the
Secretary of the Company at or before the beginning of any meeting at which
such proxy is to be voted.  Unless otherwise provided therein, no proxy shall
be valid after the term of the Manager issuing such proxy has expired or, in
any event, after three years from the date of its execution.  Each proxy shall
be revocable unless expressly provided therein to be irrevocable and coupled
with an interest sufficient in law to support an irrevocable power or unless
otherwise made irrevocable by applicable Law.

                 (b)      A proxy shall be deemed signed if the Manager's name
is placed on the proxy (whether by manual signature, electronic transmission or
otherwise) by the Manager or his or her attorney-in-fact.  In the event any
proxy shall designate two or more persons to act as proxies, a majority of such
persons present at the meeting (or, if only one shall be present, then that
one) shall have and may exercise all the powers conferred by the proxy upon all
the persons so designated unless the proxy shall otherwise provide.

                 (c)      Except as otherwise provided by applicable Law, the
Certificate of Formation or his Agreement, the Board may, in advance of any
meeting of the Managers, prescribe additional regulations concerning the manner
of execution and filing of proxies (and the validation of same) which may be
voted at such meeting.





                                      -34-
<PAGE>   67
                 Section 7.13. Action by Written Consent.  Any action required
or permitted to be taken at a meeting of the Board may be taken without a
meeting if a consent in writing, setting forth the action to be taken, shall be
signed by all members of the Board and such consent shall have the same force
and effect as a unanimous vote at a meeting.  All such written consents shall
be filed with the minutes of proceedings of the Board.

                 Section 7.14.  Telephonic Meetings. Unless otherwise
restricted by the Certificate of Formation or this Agreement, members of the
Board may participate in a meeting of the Board by means of conference
telephone or similar communications equipment by means of which all persons
participating in the meeting can hear each other, and such participation in a
meeting shall constitute presence in person at such meeting.

                 Section 7.15.  Interests in Other Entities.  Any action
required or permitted to be taken by the Company in its capacity as a member,
stockholder or holder of any other equity interest in any other entity may only
be taken upon the affirmative vote of a majority of the Whole Board.

                 Section 7.16.  Indemnification of Managers, Officers and
Others.  (a) The Company (i) shall, to the maximum extent permitted from time
to time under the Laws of the State of Delaware, indemnify every person who is
or was a party or is threatened to be made a party to any threatened, pending
or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of the
Company), by reason of the fact that such person is or was a Manager or officer
of the Company or is or was serving at the request of the Company as a manager,
director, officer or fiduciary of another Person (each such person, a "Company
Fiduciary"), and (ii) may, to the maximum extent permitted from time to time
under the Laws of the State of Delaware, indemnify every person who is or was a
party or is threatened to be made a party to any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative
or investigative (other than an action by or in the right of the Company), by
reason of the fact that such person is or was an employee or agent of the
Company or any of its direct or indirect subsidiaries or is or was serving at
the request of the Company or any of its direct or indirect subsidiaries as an
employee or agent of another Person, against expenses (including counsel fees),
judgments, fines and amounts paid or owed in settlement actually and reasonably
incurred by such person or rendered or levied against such person in connection
with such action, suit or proceeding; provided, however, that no
indemnification shall be made to any person under this Section 7.16(a) unless
such person acted in good faith and in a manner such person reasonably believed
to be in or not opposed to the best interests of the Company and, with respect
to any criminal action or proceeding, had no reasonable cause to believe his
conduct was unlawful.  The termination of any action, suit or proceeding by
judgment, order, settlement, conviction or upon a plea of nolo contendere or
its equivalent shall not, in itself, create a presumption that the person did
not act in good faith and in a manner which such person reasonably believed to
be in or not opposed to the best interests of the Company or, with respect to
any criminal action or proceeding, that the person had reasonable cause to
believe that his or her conduct was unlawful.  Any person seeking
indemnification under this Section 7.16(a) shall be deemed to have met the
standard of conduct required for such indemnification unless the contrary is
established.





                                      -35-
<PAGE>   68
                 (b)      The Company (i) shall, to the maximum extent
permitted from time to time under the laws of the State of Delaware, indemnify
every person who is or was a party or who is threatened to be made a party to
any threatened, pending or completed action or suit by or in the right of the
Company to procure a judgment in its favor by reason of the fact that such
person is or was a Company Fiduciary, and (ii) may, to the maximum extent
permitted from time to time under the laws of the State of Delaware, indemnify
every person who is or was a party or who is threatened to be made a party to
any threatened, pending or completed action or suit by or in the right of the
Company to procure a judgment in its favor by reason of the fact that such
person is or was an employee or agent of the Company or any of its direct or
indirect subsidiaries or is or was serving at the request of the Company or any
of its direct or indirect subsidiaries as an employee or agent of another
Person against expenses (including counsel fees) actually and reasonably
incurred by such person in connection with the defense or settlement or such
action or suit if such person acted in good faith and in a manner such person
reasonably believed to be in or not opposed to the best interests of the
Company; provided, however, that no indemnification shall be made to any person
under this Section 7.16(b) with respect to any claim, issue or matter as to
which such person shall have been adjudged to be liable to the Company unless
and only to the extent that, despite the adjudication of liability but in view
of all the circumstances of the case, such person is fairly and reasonably
entitled to indemnification.

                 (c)      Unless otherwise determined by the affirmative vote
of a majority of the Whole Board, no indemnification shall be made to any
person under Section 7.16(a) or Section 7.16(b):

         (i)     for amounts actually paid to such person pursuant to one or
more policies of managers, directors and officers liability insurance
maintained by the Company or pursuant to a trust fund, letter of credit or
other security or funding arrangement provided by the Company; provided,
however, that if it should subsequently be determined that such person is not
entitled to retain any such amount, this clause (i) shall no longer apply to
such amount;

         (ii)    in respect of remuneration paid to such person if it shall be
determined by a final judgment or other final adjudication that payment of such
remuneration was in violation of applicable Law;

         (iii)   on account of such person's conduct which is finally adjudged
to constitute willful misconduct or to have been knowingly fraudulent,
deliberately dishonest or from which such person derives an improper personal
benefit; or

         (iv)    on account of any suit in which final judgment is rendered
against such person for an accounting of profits made from the sale or purchase
by such person of securities of the Company pursuant to the provisions of
Section 16(b) of the Securities Exchange Act of 1934, as amended.

                 (d)      Expenses, including counsel fees and court costs,
actually and reasonably incurred by a Company Fiduciary in defending a civil or
criminal action, suit or proceeding shall be





                                      -36-
<PAGE>   69
paid by the Company in advance of the final disposition of such action, suit or
proceeding upon receipt of an undertaking by or on behalf of such Company
Fiduciary to repay such amount if it shall ultimately be determined that he or
she is not entitled to be indemnified by the Company as authorized in this
Section 7.16.  Such expenses incurred by other employees and agents of the
Company and other persons eligible for indemnification under this Section 7.16
may be paid upon such terms and conditions, if any, as the Board deems
appropriate.

                 (e)      The indemnification and advancement of expenses
provided by, or granted pursuant to, this Section 7.16 shall not be deemed
exclusive of any other rights to which those seeking indemnification or
advancement of expenses may be entitled under any provision of Law, the
Certificate of Formation, the certificate of incorporation or bylaws or other
governing documents of any direct or indirect subsidiary of the Company, under
any agreement, vote of Members or disinterested Managers or under any policy or
policies of insurance maintained by the Company on behalf of any person or
otherwise, both as to action in his or her official capacity and as to action
in another capacity while holding any of the positions or having any of the
relationships referred to in this Section 7.16.

                 (f)      The provisions of this Section 7.16 (i) are for the
benefit of, and may be enforced directly by, each Company Fiduciary, the same
as if set forth in their entirety in a written instrument executed and
delivered by the Company and such Company Fiduciary, and (ii) constitute a
continuing offer to all present and future Company Fiduciaries.  The Members,
on behalf of the Company, (A) acknowledge and agree that each present and
future Company Fiduciary has relied upon and will continue to rely upon the
provisions of this Section 7.16 in becoming, and serving as, a Company
Fiduciary, (B) waive reliance upon, and all notices of acceptance of, such
provisions by such Company Fiduciaries and (C) acknowledge and agree that no
present or future Company Fiduciary shall be prejudiced in his or her right to
enforce directly the provisions of this Section 7.16 in accordance with their
terms by any act or failure to act on the part of the Company.

                 (g)      The provisions of this Section 7.16 shall continue as
to any person who has ceased to be a Company Fiduciary and shall inure to the
benefit of the estate, executors, administrators, heirs, legatees and devisees
of any person entitled to indemnification under this Section 7.16.

                 (h)      No amendment, modification or repeal of this Section
7.16 or any provision hereof shall in any manner terminate, reduce or impair
the right of any past, present or future Company Fiduciary to be indemnified by
the Company, nor the obligation of the Company to indemnify any such Company
Fiduciary, under and in accordance with the provisions of this Section 7.16 as
in effect immediately prior to such amendment, modification or repeal with
respect to claims arising, in whole or in part, from a state of facts extant on
the date of, or relating to matters occurring prior to, such amendment,
modification or repeal, regardless of when such claims may arise or be
asserted.





                                      -37-
<PAGE>   70
                 (i)      For purposes of this Section 7.16, references to the
Company shall be deemed to include any predecessor Person and any constituent
Person absorbed in a merger, consolidation or other reorganization of or by the
Company which, if its separate existence had continued, would have had power
and authority to indemnify its managers, directors, officers, employees, agents
and fiduciaries so that any person who was a manager, director, officer,
employee, agent or fiduciary of such predecessor or constituent Person, or
served at the request of such predecessor or constituent Person as a manager,
director, officer, employee, agent or fiduciary of another Person, shall stand
in the same position under the provisions of this Section 7.16 with respect to
the Company as such person would have with respect to such predecessor or
constituent Person if its separate existence had continued.

                                  ARTICLE VIII

                                    Officers

                 Section 8.01.  Number, Election, Qualification and Term of
Office.  (a) The officers of the Company shall be a Chairman of the Board, a
President, one or more Vice Presidents, a Secretary, a Treasurer and such other
officers as may be determined by the Board from time to time.  At each annual
meeting of the Board at which a quorum shall be present, a Majority of the
Whole Board shall elect officers of the Company to succeed any officers whose
terms of office are scheduled to expire; provided, however, that the sole right
to appoint the Chairman of the Board shall alternate between Sterling and BP
for the periods between the annual meetings of the Board, with Sterling having
the sole right to appoint, remove and replace the Chairman of the Board during
the period commencing on the formation of the Company and continuing thereafter
until, but not including, the first annual meeting of the Board.  Any two or
more offices may be held by the same person, except that the offices of
President and Secretary may not be held by the same person.  No officer (other
than the Chairman of the Board) needs to be a Manager.  No officer needs to be
a Member or a resident of the State of Delaware.

                 (b)      Each officer of the Company shall serve a term of
office commencing on the effective date of his or her election until the first
annual meeting of the Board held after the effective date of his or her
election and until his or her successor shall have been duly elected and
qualified or until his or her earlier death, resignation or removal.  Any
officer whose term of office is scheduled to expire may be elected or appointed
to succeed himself or herself.  Unless otherwise unanimously agreed by the
Members, the President of the Company must be an employee of BP or one or more
of its Affiliates.

                 Section 8.02.  Resignation.  Any officer shall have the right
to resign at any time upon written notice thereof to the Board or the President
of the Company.  Unless otherwise specified in the notice, any such resignation
shall take effect upon receipt thereof, and the acceptance of such resignation
shall not be necessary to make it effective.





                                      -38-
<PAGE>   71
                 Section 8.03.  Removal.  The Chairman of the Board may be
removed at any time, with or without cause, by the Member that appointed the
Chairman of the Board.  The President of the Company may be removed at any
time, with or without cause, (i) upon the affirmative vote of two of the
Managers and the delivery of written notice to the President by such Managers
at least three months prior to the effective date of such removal, or (ii) upon
the affirmative vote of a majority of the Whole Board.  Each of the other
officers of the Company may be removed at any time by the affirmative vote of a
majority of the Whole Board, with or without cause.  The removal of any officer
of the Company shall be without prejudice to the rights, if any, of such
officer under any employment agreement or other Contract between such officer
and the Company which is in effect at the time of the removal of such officer.
Election of an officer shall not of itself create contract rights. Except as
otherwise provided in this Section 8.03, an officer of the Company may not be
removed prior to expiration of his or her term.

                 Section 8.04.  Vacancies.  Whenever a vacancy shall occur in
the office of the Chairman of the Board, such vacancy may only be filled by the
Member entitled to appoint the Chairman of the Board pursuant to Section
8.01(a) at the time of such vacancy by the appointment of a new Chairman of the
Board.  Whenever a vacancy shall occur in any other office of the Company, such
vacancy may only be filled by a majority of the Whole Board.  Any officer
appointed or elected to fill a vacancy in any office of the Company pursuant to
this section 8.04 shall hold such office until the date of the next annual
meeting of the Board held after the date of his or her appointment or election
and until his or her successor shall have been duly appointed or elected and
qualified or until his or her earlier death, resignation or removal.

                 Section 8.05.  Attendance at Meetings of the Board.  The
Chairman of the Board shall call all meetings of the Board to order, and shall
act as chairman of such meetings, but in the absence of the Chairman of the
Board, a majority of the Whole Board may appoint any Manager present to act as
chairman of the meeting.  The Secretary of the Company shall act as secretary
of all meetings of the Board, but in the absence of the Secretary, the chairman
of the meeting may appoint any person present to act as secretary of the
meeting.

                 Section 8.06.  Chairman of the Board.  The Chairman of the
Board, if present, shall preside at all meetings of the Board, shall be the
principal officer of the Company and shall perform such other duties as may be
assigned to him or her by the Board.  The Chairman of the Board shall have the
power to sign all certificates, Contracts and other instruments of the Company
which may be authorized by the Board.

                 Section 8.07.  President.  The President shall be the Chief
Executive Officer of the Company and, subject to the control of the Board,
shall have general charge and supervision of the administration of the
activities and affairs of the Company.  The President shall see that all orders
and resolutions of the Board are carried into effect.  The President may sign
and execute all legal documents and instruments in the name of the Company when
authorized to do so by the Board, shall prepare an Annual Business Plan and an
annual budget showing expected receipts and expenditures for consideration by
the Board, and shall perform such other duties as may be





                                      -39-
<PAGE>   72
prescribed from time to time by the Board.  The Annual Business Plan shall be
consistent with the provisions of this Agreement, the Certificate of Formation
and the Joint Venture Agreement.  The President shall also have the power to
appoint and remove subordinate employees (other than officers of the Company)
and to determine the terms and conditions of their employment; provided,
however, that any employee of the Company who is a secondee of a Member shall
receive benefits, at the expense of the Company, which are in the aggregate
substantially equivalent to the benefits provided by such Member to its other
employees.  The President shall submit to the Board plans and suggestions for
the activities of the Company, shall direct its general correspondence and
shall present recommendations in each case to the Board for decision.  The
President shall also submit a report of the activities and affairs of the
Company at each annual meeting of the Board and at other times when called upon
to do so by the Board.

                 Section 8.08.  Vice President(s).  Each Vice President shall
have such powers and perform such duties as may from time to time be assigned
to him or her by the President.

                 Section 8.09.  Secretary.  The Secretary shall have charge of
the records and correspondence of the Company under the direction of the
President, and shall be the custodian of the seal of the Company, if any.  The
Secretary shall give notice of and attend all meetings of the Board.  The
Secretary shall take and keep true minutes of all meetings of the Board of
which, ex officio (but without a vote), the Secretary shall be the secretary.
The Secretary shall discharge such other duties as shall be prescribed from
time to time by the President or the Board.

                 Section 8.10.  Assistant Secretaries.  Each Assistant
Secretary shall have such powers and duties as may be assigned to him or her by
the Board, the President or the Secretary.  In case of the absence or
disability of the Secretary, the Assistant Secretary designated by the
President (or, in the absence of such designation, the Secretary) shall perform
the duties and exercise the powers of the Secretary during the period of such
absence or disability.  In no event shall any third party having dealings with
the Company be bound to inquire as to any facts required by the terms of this
Section 8.10 for the exercise by any Assistant Secretary of the powers of the
Secretary.

                 Section 8.11.  Treasurer.  The Treasurer shall keep account of
all moneys, credits and Assets of the Company which shall come into the
Treasurer's hands and keep an accurate account of all moneys received and
discharged.  Except as otherwise ordered by the Board, the Treasurer shall have
the custody of all the funds and securities of the Company and shall deposit
the same in such banks or depositories as the Board shall designate.  The
Treasurer shall keep proper books of account and other books showing at all
times the amount of the funds and other Assets belonging to the Company, all of
which books shall be open at all times to the inspection of the Board.  The
Treasurer shall also submit a report of the accounts and financial condition of
the Company at each annual meeting of the Board.  The Treasurer shall, under
the direction of the Board, disburse all moneys and sign all checks and other
instruments drawn on or payable out of the funds of the Company, which checks,
however, may also be required by the Board to be signed by the President or one
of the Vice Presidents, or in the case of their absence or disability, by such
member of the Board as the Board shall designate.  The Treasurer shall also
make such transfers and alterations in





                                      -40-
<PAGE>   73
the securities of the Company as may be ordered by the Board.  In general, the
Treasurer shall perform all duties which are incident to the office of
Treasurer, subject to the supervision and control of the Board, and shall
perform such additional duties as may be prescribed from time to time by the
Board.  The Treasurer shall give bond only if required by the Board.

                 Section 8.12.  Assistant Treasurers.  Each Assistant Treasurer
shall have such powers and duties as may be assigned to him or her by the
Board, the President or the Treasurer.  In case of the absence or disability of
the Treasurer, the Assistant Treasurer designated by the President (or, in the
absence of such designation, the Treasurer) shall perform the duties and
exercise the powers of the Treasurer during the period of such absence or
disability.  In no event shall any third party having dealings with the Company
be bound to inquire as to any facts required by the terms of this Section 8.12
for the exercise by any Assistant Treasurer of the powers of the Treasurer.

                 Section 8.13.  Indemnification.  Officers of the Company shall
be entitled to be indemnified by the Company to the extent set forth in Section
7.16.





                                      -41-
<PAGE>   74
                                   ARTICLE IX

                           Accounting and Tax Matters

                 Section 9.01.  Books and Records; Right to Audit.  The Company
shall keep, at the principal office of the Company or at such other places as
the Company shall inform the Members, true and accurate books of account and
other records of the Company and shall make all reports in accordance with
sound accounting practices and principles employing standards and procedures,
and in a form, in conformity with GAAP.  If, in the reasonable opinion of any
Member, such practices do not readily provide for the preparation of quarterly
financial reports in a form that it is accustomed to using in its own
operations, then the detailed substance for the preparation of all necessary
financial reports and all relevant cost reports shall be supplied to such
Member by the Company at the Company's expense.  In addition to any other
rights they may have under the Laws of the State of Delaware as Members of the
Company, each of the Members shall have the right to verify any information
pertinent to this Agreement.  Upon written request of any of the Members, from
time to time, the Company shall provide to an independent third party
accountant selected by the Member making the request, at reasonable times
during normal business hours, subject to the receipt by the Company of an
appropriate confidentiality agreement signed by such accountant, access to the
Company's books, records and accounts relating to this Agreement, except as
such access may be prohibited by Law or presently existing Third Party
confidentiality agreements.  Such independent accountant shall thereupon have
the right to make copies of and abstracts from such books, records and
accounts, at the expense of the requesting Member, which copies may be removed
from the premises of the Company and retained by such accountant, subject to
the terms of the confidentiality agreement signed by such accountant.  Such
account may report to the requesting Member only its conclusions resulting from
such accountant's review of the Company's data and nothing else.  All disputes
arising from an audit shall be resolved in accordance with the provisions of
Section 12.11.  Any expense incurred by a Member or its accountant in
connection with an inspection of the Company's books or records or in
connection with auditing such books and records shall be borne by such Member
or agent and not the Company.

                 Section 9.02.  Accrual Basis.  The books and records of the
Company shall be maintained for federal income tax purposes in accordance with
the accrual method of accounting.

                 Section 9.03.  Preparation of Tax Returns.  The Tax Matters
Member shall have the responsibility to arrange for the preparation and timely
filing of all returns of the Company income, gains, deductions, losses and
other items required of the Company for federal and state income tax purposes.
The Company's federal income tax information return shall be filed on or before
August 15th of each year (assuming timely and proper filings have been made for
an extension to such date, and if not, on or before the required filing date).
The Members agree to furnish to the Tax Matters Member on or before June 1st of
each year all information necessary for the preparation and filing of such
returns.  The Tax Matters Member shall provide to the Members a draft of the
federal income tax information return for the Company annually on or before
July 15th of the year following the year for which such return is prepared.
Each Member shall review the draft and provide written





                                      -42-
<PAGE>   75
comments thereon within 30 days after receipt of the draft.  If comments are
not provided within such 30-day period, the draft return shall be deemed
approved by the Members.

                 Section 9.04.  Tax Elections.  (a)  The following elections
shall be made on behalf of the Company for federal income tax purposes:

         (i)     to adopt the calendar year as the fiscal year of the Company;

         (ii)    to adopt the accrual method of accounting;

         (iii)   to use the maximum allowable accelerated tax method and the
shortest permissible life for depreciation;

         (iv)    to account for dispositions of depreciable Assets under the
general asset method to the extent permitted under Section 168(i)(4) of the
Code;

         (v)     to amortize the organizational and startup expenses ratably
over a period of 60 months;

         (vi)    to be treated as a partnership for federal income tax purposes
under Treasury Regulation Section 301.7701-3 and timely file Form 8832, Entity
Classification Election;


         (vii)   to adopt the dollar value LIFO method of inventory accounting;
and

         (viii)  the election described in Section 6231(a)(1)(B)(ii) of the
Code to have Chapter 63, Subchapter C of the Code apply to the Company.

                 (b)      The Company shall make the election under Section 754
of the Code (i) upon the request of a Transferee of a Membership Interest or
(ii) upon the request of a Member upon a distribution of Assets of the Company
to such Member.  The Board, upon notice to and consent by the Members, shall
seek to revoke any such election upon the Board's determination that such
revocation is in the best interests of the Members.  No election shall be made
by the Company, or on behalf of the Company, to have the Company be treated as
other than a partnership for tax purposes, and the Company shall make any
election required of it to be treated as a partnership for tax purposes.

                 Section 9.05.  Tax Controversies.  BP is hereby designated the
"Tax Matters Member" to act on behalf of the Company as "Tax Matters Partner"
pursuant to Section 6231 of the Code.  The Tax Matters Member and each Member
shall use commercially reasonable efforts to comply with the responsibilities
outlined in this Section 9.05 and Code Section 6222 through Section 6233 and
Section 6050K (and the Treasury Regulations thereunder) and in doing so shall
not incur any Liability to any other Member.  Notwithstanding the Tax Matters
Member's obligation to use commercially reasonable





                                      -43-
<PAGE>   76
efforts in the fulfillment of its responsibilities, the Tax Matters Member
shall not be required to incur any expenses for the preparation for, or
pursuance of, administrative or judicial proceedings, unless the Members agree
on a method for sharing such expenses.

                 Section 9.06.  Information Request by Tax Matters Member.
Each Member shall furnish the Tax Matters Member, within two weeks from the
receipt of a request therefor, any information (including information specified
in Code Section 6230(e) on partner identification and Section 6050K for
transfers of Membership Interests) which the Tax Matters Member may reasonably
request in order to comply with the requirements of furnishing information to
the Internal Revenue Service.

                 Section 9.07.  Statute of Limitations; Tax and Settlement
Agreements.  The Tax Matters Member shall not agree to any extension of the
statute of limitations for making assessments on behalf of the Company without
first obtaining the written consent of the Members.  The Tax Matters Member
shall not bind any Member to a settlement agreement in tax audits without
obtaining the written concurrence of such Member.  Any other Member who enters
into a settlement agreement with the Secretary of the Treasury with respect to
any Company items, as defined in Code Section 6231(a)(3), shall notify the
other Members of the terms of such settlement within 90 days from the date of
such settlement.





                                      -44-
<PAGE>   77
                 Section 9.08.  Request for Administrative Adjustment.  No
Member shall file pursuant to Code Section 6227 a request for an administrative
adjustment of Company items without first notifying the other Members.  If the
other Members agree with the requested adjustment, the Tax Matters Member shall
file the request on behalf of the Company.  If unanimous consent is not
obtained within 30 days from such notice, or within the period required to
timely file the request, if shorter, any Member, including the Tax Matters
Member, may file a request for administrative adjustment on its own behalf.

                 Section 9.09.  Judicial Proceedings.  Any Member intending to
file a petition under Code Section 6226 or Section 6228 or any other Code
section with respect to any Company item, or other tax matters involving the
Company, shall notify the other Members prior to such filing of the nature of
the contemplated proceeding.  In the case where the Tax Matters Member is the
Member intending to file such petition, such notice shall be given within a
reasonable time to allow the other Members to participate in the choice of the
forum for such petition, and the Members shall mutually agree on an appropriate
forum.  If a Member intends to seek review of any court decision rendered as a
result of such proceeding, such Member shall notify the other Members prior to
seeking such review.

                 Section 9.10.  Company Bank Account.  All proceeds and cash
receipts and other funds of the Company shall be deposited in one or more
Company accounts in a bank approved by the Board.  Such funds shall not be
commingled with the funds of any Member or any other Person.  All expenditures
on behalf of the Company shall be made with funds withdrawn from the Company
bank accounts.

                                   ARTICLE X

                        Transfer of Membership Interests

                 Section 10.01.  Restrictions on Transfer of a Membership
Interest.  Except as otherwise provided in this Article X, no Member may
Transfer all or any portion of its Membership Interest to any Person without
the consent of the other Members; provided, however, that without obtaining the
consent of the Members, any Member may (a) Transfer all or any part of its
Membership Interest to an Affiliate of such Member, (b) Transfer all of its
Membership Interest to a successor in interest of all or substantially all of
the assets or business of such Member to which this Agreement relates (unless
such successor in interest is, at the time of the proposed Transfer, a
competitor of any other Member or is otherwise objectionable to any other
Member for legitimate business reasons, and such objection is asserted in good
faith and not waived by the Member asserting such objection) or (c) pledge,
assign for security purposes or otherwise grant a Lien in all or any part of
such Member's Membership Interest (each, a "Permitted Transfer").  As part of
any Permitted Transfer pursuant to clause (a) or (b) above, the Member making
the Transfer shall require the Transferee to deliver the document required by
Section 10.03 and the Member making such Transfer shall remain liable for the
performance by such Transferee of the obligations of such Member under this
Agreement unless the other Members agree otherwise in writing





                                      -45-
<PAGE>   78
                 Section 10.02.  Right of Transferee to be Admitted to the
Company.  Subject to the provisions of this Article X, any Member may grant a
Transferee of all or any part of its Membership Interest the right to be
admitted to the Company as a Member, with such Percentage Interest as the
Member and Transferee may agree; provided, however, that (a) in the event of a
Transfer other than a Permitted Transfer, such Member obtains the consent of
the other Members prior to the Transfer, which consent shall not be
unreasonably withheld, delayed or conditioned, and (ii) the respective
Membership Interests of the Member and Transferee shall in the aggregate equal
the Percentage Interest of the Member making the Transfer prior to such
Transfer.

                 Section 10.03.  Transfer Documents.  No Transfer (other than a
Permitted Transfer under Section 10.01(c)) shall be recognized by the Company
for any purpose until the Company has received a document which:

         (a)     is executed by the Member making the Transfer, or such
Member's representative, and the Transferee;

         (b)     includes the address and numbers of the Transferee to be
admitted to the Company as a Member for notification purposes and the
Transferee's agreement to be bound by (i) this Agreement in respect of the
Membership Interest or part thereof acquired and (ii) if the Member making the
Transfer is a party to the Joint Venture Agreement, the Joint Venture
Agreement;

         (c)     sets forth the respective Percentage Interests of the Member
making the Transfer and the Transferee immediately subsequent to the Transfer;

         (d)     contains a representation and warranty that the Transfer was
made in accordance with this Agreement, the Joint Venture Agreement (if
applicable) and all applicable Laws; and

         (e)     if the Transferee is to be admitted to the Company as a
Member, such representations and warranties of the Transferee as the Company or
any Member may reasonably require.

Each Transfer and, if applicable, admission to the Company shall be effective
as of the first day of the calendar month immediately succeeding the month in
which the all of requirements of this Section 10.03 have been met.

                 Section 10.04.  Compliance with Securities Laws.  Prior to the
effectiveness of any Transfer or, if applicable, admission of the Transferee to
the Company as a Member, the Membership Interest or part thereof subject to the
Transfer and/or the admission of the Transferee to the Company must be either
(a) registered under the Securities Act of 1933, as amended, and any applicable
state securities Laws or (b) exempt from any such registration.  In addition,
if requested by the Company or any Member, the Member making such Transfer must
deliver to the Company a favorable opinion of legal counsel reasonably
acceptable to the Company to the effect that (i) if such Transfer is not
registered under the Securities Act of 1933, as amended, and all applicable
state securities Laws, such Transfer is exempt from any such registration, and
(ii) such Transfer and/or





                                      -46-
<PAGE>   79
admission, when added to the total of all other sales, assignments or other
Transfers made within the preceding 12 months, would not result in the Company
being considered to have terminated within the meaning of the Code.

                 Section 10.05.  Reimbursement of Costs.  The Member making a
Transfer and any Transferee admitted to the Company in connection with such
Transfer shall pay, or reimburse the Company for, all costs incurred by the
Company in connection with the Transfer and/or admission, including reasonable
attorneys' fees, on or before the 30th day after receipt of the Company's
invoice for the amount due.  If payment is not made by the date due, the Member
or Transferee owing such amount shall pay interest on the unpaid amount from
the date that such payment is due until paid at a rate equal to the lesser of
10% and the maximum non-usurious rate permissible under applicable Law.

                 Section 10.06.  Application to Transferees.  All Transferees
of all or any portion of a Member's Membership Interest shall be bound by,
comply with and take such Membership Interest subject to the terms and
conditions of this Agreement.  Each Transferee shall be required to become a
party to this Agreement by executing an adoption agreement in form and
substance reasonably satisfactory to the Company and the other Members,
whereupon such Person shall become a "Member" and shall have all of the rights
and obligations of a "Member" under this Agreement, and such Membership
Interest shall continue to be subject to the provisions of this Agreement.

                 Section 10.07.  Transfer in Violation of the Agreement.
Notwithstanding anything contained in this Agreement to the contrary, no
Transfer of any Membership Interest may be made by a Member or shall be
effective if the Transfer is not in strict compliance with this Agreement;
provided, however, that all or any portion of this Agreement may be waived with
the written consent of the Company and the other Members.  Any attempted or
purported Transfer of any Membership Interest in violation of this Agreement
shall be null and void and of no force and effect.  Any Member making a
Transfer of its Membership Interest in violation of any of the terms of this
Agreement will retain beneficial ownership of such Membership Interest,
including the right to vote such Membership Interest and to receive all
distributions with respect to such Membership Interest.  The Company shall have
the right and the obligation to treat any Transfer in violation of any of the
terms of this Agreement as void and, in enforcing such right and obligation,
the Company may, in addition and without prejudice to any and all other rights
which may be available to the Company, hold and refuse to Transfer any
Membership Interest or any certificate therefor presented to it for Transfer.
If the Company receives notice of any attempted Transfer which would be in
violation of the terms of this Agreement, it shall notify the other Members.





                                      -47-
<PAGE>   80
                                   ARTICLE XI

                           Winding Up and Liquidation

                 Section 11.01.  Liquidation of Assets of the Company and
Disposition of Proceeds.  Except as otherwise provided in this Article XI, as
soon as practicable following the occurrence of a Dissolution Event the
business of the Company shall be wound up and the Company shall be dissolved
and liquidated; provided, however, that this Agreement shall not terminate
until the liquidation of the Company is complete in accordance with the
provisions of this Article XI.  The Board (or such Person as may be designated
by the Board) shall act as the liquidator (the "Liquidator") and shall
immediately proceed to wind up and terminate the Company affairs with full
power and authority to do all acts necessary and in accordance with the terms
of this Article XI.  All actions taken by the Board, if it acts directly as
Liquidator, significantly affecting the liquidation distributions of the
Members must first receive approval of a majority of the Whole Board.  The
Liquidator shall:

         (a)     as soon as possible after dissolution, and again after final
liquidation, cause a proper accounting to be made of the Assets and Liabilities
of the Company through the last day of the calendar month in which the
dissolution occurs or the final liquidation is completed, as applicable, by an
independent certified accountant;

         (b)     pay from Company funds all of the Liabilities of the Company
(including all expenses incurred in the liquidation and any loans from Members)
or otherwise make adequate provision therefor (including the establishment of a
cash escrow fund for any contingent Liabilities in such amount and for such
term as the Liquidator may reasonably determine);

         (c)     establish any reserves which the Liquidator deems necessary or
advisable to provide for any contingent or unforeseen Liabilities of the
Company or of the Liquidator arising out of or in connection with the Company;
provided, however, that after the expiration of such period of time as the
Liquidator deems advisable, the balance of such reserves remaining after
payment of such contingencies shall be distributed in the manner hereinafter
set forth in this Section 11.01; and

         (d)     subject to the terms of the Joint Venture Agreement,
distribute and allocate the remaining Assets of the Company among the Members,
pro rata, in accordance with the balances in their respective Capital Accounts
(after adjustment to reflect the allocations under Article VI).

All distributions made to the Member pursuant to clause (d) above shall be made
either (i) within 90 days after the date of such liquidation or (ii) by the end
of the fiscal year of the Company during which such liquidation occurs,
whichever period shall expire later in time; provided, however, that the
Company may withhold reserves established under Section 11.01(c) and
receivables of the Company for the purpose of collecting any amounts due
thereunder.  Any amounts so withheld (or the proceeds of the collection of
receivables so withheld) shall be distributed as soon as practicable to, and
allocated among, the Members in the ratio of their respective Capital Accounts.





                                      -48-
<PAGE>   81
                 Section 11.02.  Partial Liquidation of Assets.
Notwithstanding anything contained in this Article XI to the contrary, if the
Liquidator determines that a complete liquidation of all of the Assets of the
Company would involve substantial Losses or be impractical or ill advised under
the circumstances, or be undesirable for any reason, the Liquidator shall
liquidate the portion of the Assets of the Company necessary to pay the
expenses of liquidation and the Liabilities of the Company (excluding the
Liabilities of the Company to the extent they are adequately secured by Liens
on the Assets of the Company), and the remaining Assets of the Company shall be
distributed to the Members (i) as tenants-in-common, (ii) partitioned in
accordance with applicable Laws or (iii) distributed in such other reasonable
manner as shall be determined by the Liquidator.  The distribution of such
remaining Assets of the Company to the Members shall be made subject to any
Liens covering such Assets.

                 Section 11.03.  Appointment of Liquidator.  If the Board is
unable or unwilling to act as the Liquidator, or if the Members elect to
appoint a Liquidator other than the Board, the Members shall appoint a
Liquidator to wind up the affairs and liquidate the Assets of the Company.  Any
such Liquidator shall have all of the powers necessary to perform all acts
contemplated to be performed by the Liquidator under this Article XI and shall
be compensated as agreed upon by the Liquidator and such Members.

                 Section 11.04.  Certificate of Cancellation.  On completion of
the distribution of the Assets of the Company as contemplated by Section 11.05,
the Board (or such other Person or Persons as the Act may require or permit)
shall file a Certificate of Cancellation with the Secretary of State, cancel
any filings made pursuant to Section 2.04 and take such other actions as may be
necessary to terminate the existence of the Company.  Upon the effectiveness of
the Certificate of Cancellation, the existence of the Company shall cease,
except as may be otherwise provided by the Act or other applicable Law.

                 Section 11.05.  Indemnification of the Liquidator.  The
Company shall indemnify, defend and hold harmless any Liquidator from and
against all Claims, Liabilities and Losses which may be imposed on, incurred by
or asserted against the Liquidator, arising out of or resulting from, directly
or indirectly, the Liquidator taking any action authorized under this Article
XI; provided, however, that the Company shall not be liable for any portion of
any Claims, Liabilities or Losses resulting from (a) a matter entirely
unrelated to the Liquidator's authority under this Agreement, (b) a material
breach by the Liquidator of its obligations under this Agreement or (c) from
the Liquidator's gross negligence, fraud or willful misconduct.  The
indemnification rights contained herein shall be cumulative of, and in addition
to, any and all other rights, remedies and recourse to which the Liquidator
shall be entitled at law or in equity.

                 Section 11.06.  Indemnification for Dissolution.  Each Member
shall indemnify, defend and hold harmless the Company and the other Members and
their respective present and former directors, officers, stockholders,
employees and agents and their respective heirs, executors, personal
representatives, administrators, successors and assigns (the "Indemnified
Persons") from and against any and all Claims, Liabilities and Losses which may
be imposed on, incurred by or





                                      -49-
<PAGE>   82
asserted against any Indemnified Person, arising out of or resulting from,
directly or indirectly, a dissolution of the Company arising out of a violation
by any Member of the covenants set forth in Section 2.05 or Section 4.03.

                 Section 11.07.  Capital Contributions to Restore Capital
Accounts.  Except as otherwise agreed by the Members in writing, in the event
that the Capital Accounts of less than all of the Members have negative
balances upon liquidation of the Company, or the Capital Account of any Member
has a negative balance upon liquidation of such Member's Membership Interest,
after giving effect to the allocations under Article VI, each such Member whose
Capital Account has such a negative balance shall be obligated to make an
additional Capital Contribution to the Company by the end of the fiscal year in
which such liquidation occurs in an amount sufficient to eliminate the negative
balance in its Capital Account; provided, however, that the additional Capital
Contributions described in this Section 11.07 shall not be required where such
requirement would destroy or infringe on the limited liability characteristic
of a Member's Membership Interest.  For purposes of this Section 11.07, the
Company shall be deemed to liquidate on the date on which the Company ceases to
be a going concern (even though it may continue in existence for the purpose of
winding up its affairs, paying its Liabilities and distributing any proceeds of
the collection of its receivables to the Members).

                                  ARTICLE XII

                               General Provisions

                 Section 12.01. Notices.  Any and all notices, requests or
other communications hereunder shall be given in writing and delivered by (a)
regular, overnight or registered or certified mail (return receipt requested),
with first class postage prepaid, (b) hand delivery, (c) facsimile or
electronic transmission or (d) overnight courier service, to the Company at its
principal office and to the Members at the addresses or numbers set forth on
Exhibit B or at such other address or number as shall be designated by the
Company or a Member in a notice to the Company and the Members given in
accordance with this Section 12.01.  Except as otherwise provided in this
Agreement, all such communications shall be deemed to have been duly given, (i)
in the case of a notice sent by regular mail, on the date actually received by
the addressee, (ii) in the case of a notice sent by registered or certified
mail, on the date receipted for (or refused) on the return receipt, (iv) in the
case of a notice delivered by hand, when personally delivered, (iv) in the case
of a notice sent by facsimile or electronic transmission, upon transmission
subject to telephone confirmation of receipt, and (v) in the case of a notice
sent by overnight mail or overnight courier service, the date delivered at the
designated address, in each case given or addressed as aforesaid.

                 Section 12.02.  Counterparts.  This Agreement may be executed
by the Members in any number of counterparts, each of which shall be deemed an
original instrument, but all of which together shall constitute but one and the
same agreement.  No Member shall become bound by this Agreement or any other
document or instrument executed by counterpart until all Members have affixed
their respective signatures hereto.





                                      -50-
<PAGE>   83
                 Section 12.03.  Benefit and Burden.  (a) This Agreement shall
inure to the benefit of, and shall be binding upon, the Company and the Members
and their respective successors and permitted assigns.

                 (b)      Anything herein or elsewhere to the contrary
notwithstanding, in no event shall any director, officer, stockholder,
employee, agent, advisor or other representative of any of the Members (past,
present or future) have any personal liability (whether at law or in equity)
under this Agreement or on account of any actions taken or omitted in
connection therewith, it being specifically understood and agreed that only the
Members and their respective successors and permitted assigns shall be subject
to any such personal liability.

                 Section 12.04.  No Third Party Rights.  Except as otherwise
provided in Sections 11.06 and 12.03, nothing in this Agreement shall be deemed
to create any right in any creditor or other Person not a party hereto (other
than the Liquidator) and this Agreement shall not be construed in any respect
to be a Contract in whole or in part for the benefit of any other third party.

                 Section 12.05.  Amendments and Waiver.  No amendment,
modification, restatement or supplement of this Agreement shall be valid unless
the same is in writing and signed by the Members.  No waiver of any provision
of this Agreement shall be valid unless in writing and signed by the Member
against whom that waiver is sought to be enforced.  No failure or delay on the
part of any Member in exercising any right, power or privilege hereunder, and
no course of dealing between or among the Members, shall operate as a waiver of
any right, power or privilege hereunder.  No single or partial exercise of any
right, power or privilege hereunder shall preclude any other or further
exercise thereof or the exercise of any other right, power or privilege
hereunder.  No notice to or demand on any Member in any case shall entitle such
Member to any other or further notice or demand in similar or other
circumstances or constitute a waiver of the rights of any Member to any other
or further action in any circumstances without notice or demand.

                 Section 12.06.  Assignments.  Except in connection with an
assignment of all or any portion of a Member's Membership Interest in
compliance with Section 4.05(b) or Article X, neither this Agreement nor any
right, interest or obligation hereunder may be assigned by any Member without
the prior written consent of the other Members and any attempt to do so shall
be null and void; provided, however, that no assignment, Transfer or other
conveyance by any Member of any of its rights, interests or obligations
hereunder shall relieve such Member of its obligations under this Agreement
unless the other Members expressly agree otherwise in writing.

                 Section 12.07.  Severability.  Should any clause, sentence,
paragraph, subsection, Section or Article of this Agreement be judicially
declared to be invalid, unenforceable or void, such decision will not have the
effect of invalidating or voiding the remainder of this Agreement, and the
Members agree that the part or parts of this Agreement so held to be invalid,
unenforceable or void will be deemed to have been stricken herefrom as if such
stricken part or parts had never been included herein.





                                      -51-
<PAGE>   84
                 Section 12.08.  Remedies.  The Members agree that the
covenants and obligations contained in this Agreement relate to special, unique
and extraordinary matters and that a violation of any of the terms hereof would
cause irreparable injury in an amount which would be very difficult to estimate
or determine and for which any remedy at law would be inadequate.  As such, the
Members agree that if any Member fails or refuses to fulfill any of its
obligations under this Agreement or to make any payment or deliver any
instrument required hereunder, then the other Members shall have the remedy of
specific performance, which remedy shall be cumulative and nonexclusive and
shall be in addition to any other rights and remedies otherwise available under
any other Contract or at law or in equity and to which such Member might be
entitled.

                 Section 12.09.  Applicable Law.  THIS AGREEMENT AND THE RIGHTS
AND OBLIGATIONS OF THE COMPANY AND THE MEMBERS HEREUNDER SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, WITHOUT
GIVING EFFECT TO THE CONFLICT OF LAW PRINCIPLES THEREOF.

                 Section 12.10.  Expenses.  Except as otherwise expressly
provided in this Agreement, each of the Members shall pay its own expenses
incident to this Agreement, including all legal and accounting fees and
disbursements.

                 Section 12.11.  Dispute Resolution.  (a) In the event that the
Members, using commercially reasonable efforts, fail to resolve any dispute
arising out of:

         (i)     the interpretation of this Agreement;

         (ii)    the entering into or amendment or termination of any Contact
between the Company and any other Person which (A) is not a part of the Annual
Business Plan for the fiscal year of the Company in which such action is taken
and (B) is reasonably expected under then current market prices and conditions
to involve more than $1,000,000 in the aggregate; or

         (iii)   any change in the price at which acrylonitrile is purchased or
sold by the Company which is not a part of the Annual Business Plan for the
fiscal year of the Company in which such change is to take effect, within 30
days after the date on which such dispute arises, such dispute or matter shall
be resolved in accordance with this Section 12.11.

                 (b)      Each of the Members which is a party to such dispute
shall promptly, but in any event within ten days after the expiration of such
30-day period, advise their respective CEOs of such dispute and submit such
dispute to their respective CEOs for resolution.  In the event that the CEOs of
such Members fail to resolve such dispute within 30 days after such dispute has
been submitted to them for resolution, such dispute shall be settled by binding
arbitration pursuant to Section 12.11(c).

                 (c)      In the event that the CEOs of the Members which are a
party to a dispute fail to resolve such dispute under Section 12.11(b), each of
such Members shall set forth their respective





                                      -52-
<PAGE>   85
positions with regard to the issue in dispute in writing and resolution of the
issue shall be determined by arbitration, with one arbitrator appointed by each
of the Members which is a party to such dispute and an additional arbitrator
appointed by the arbitrators appointed by such Members.  If such arbitrators
cannot agree on the appointment of the additional arbitrator, then such
arbitrator shall be a partner in one of the "Big Six" accounting firms (which
is not employed by any of the Members or any of their respective Affiliates)
appointed by the Midwest Regional Director of the American Arbitration
Association.  The arbitration shall be conducted in Chicago, Illinois pursuant
to the Commercial Arbitration Rules of the American Arbitration Association.
The Members agree that the determination of the arbitrators will be final and
binding.  Judgment upon the arbitrators' award may be entered in any court
having jurisdiction thereof.  Each of the Members shall bear the costs of their
respective arbitrators and their related expenses, and the costs of the
additional arbitrator and his or her related expenses, as well as all other
costs of the arbitration, shall be paid equally by the Members or as the
arbitrators may otherwise determine.  During the arbitration, the Members shall
continue to perform their obligations under this Agreement with the exception
of those under arbitration.

                 Section 12.12.  Agreement to Perform Actions Under Joint
Venture Agreement.  Each of the Members, by its execution of this Agreement,
acknowledges and agrees that the Company shall be bound by and perform all
covenants and actions contemplated to be performed by the Company under the
Joint Venture Agreement.

                 Section 12.13.  Entire Agreement.  This Agreement, ***, the
Joint Venture Agreement and the Production Agreement set forth all of the
promises, agreements, conditions, understandings, warranties and
representations between or among the Members with respect to the matters
contemplated hereby and thereby, and supersede all prior agreements,
arrangements and understandings between or among any of the Members, whether
written, oral or otherwise.  In the event of any conflict between any provision
of this Agreement and any provision of the Joint Venture Agreement, the
provisions of the Joint Venture Agreement shall control.  There are no
promises, agreements, conditions, understandings, warranties or
representations, oral or written, express or implied, between or among any of
the Members concerning the subject matter hereof or thereof except as set forth
herein or therein.





                                      -53-
<PAGE>   86
                 EXECUTED to be effective as of the date and year first above
written.


         STERLING CHEMICALS, INC.



         By:
             Frank P. Diassi, Chairman of the Board


         BP CHEMICALS INC.



         By:
             Gary C. Greve, President





                                      -54-
<PAGE>   87
                                   EXHIBIT A

                     Countries Excluded From the Territory

                                      ***

                 





                                      -1-
<PAGE>   88
                                   EXHIBIT B

                       Members and Capital Contributions

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------------
           MEMBER                        ADDRESS                PERCENTAGE        CAPITAL CONTRIBUTION          AGREED
                                                                 INTEREST                                       VALUE
- --------------------------------------------------------------------------------------------------------------------------
  <S>                         <C>                                  <C>        <C>
  Sterling Chemicals, Inc.    1200 Smith, Suite 1900               ***        The Assigned Assets (as
                              Houston, Texas  77002                           defined in that certain
                              Attention: Paul Rostek                          Assignment and Assumption
                              Facsimile: (713) 654-9591                       Agreement dated effective as
                              Telephone: (713) 654-9551                       of midnight on March 31, 1998
                              E-Mail: PRostek@                                between the Company and
                                                                              Sterling) and the rights
                              Sterlingchemicals.com                           granted to the Company by
                                                                              Sterling pursuant to that
                                                                              certain Joint Venture
                                                                              Agreement dated as of March
                                                                              31, 1998 between Sterling and
                                                                              BP.
- --------------------------------------------------------------------------------------------------------------------------
  BP Chemicals Inc.           4440 Warrensville Road               ***        The Assigned Assets (as
                              Cleveland, Ohio  44128-2837                     defined in that certain
                              Attention: Vice President                       Assignment and Assumption
                                                Marketing                     Agreement dated effective as
                              Facsimile: (216) 586-3838                       of midnight on March 31, 1998
                              Telephone: (216) _________                      between the Company and BP)
                              E-Mail: [email protected]                          and the rights granted to the
                                                                              Company by BP pursuant to
                                                                              that certain Joint Venture
                                                                              Agreement dated as of March
                                                                              31, 1998 between Sterling and
                                                                              BP.
- --------------------------------------------------------------------------------------------------------------------------
</TABLE>





                                      -1-
<PAGE>   89
                                   EXHIBIT C

                           Certificate of Formation



                                  (Attached)





                                      -1-
<PAGE>   90
                                   EXHIBIT D
                        PRICE AND VOLUME RECONCILIATION

                                      ***



                                      -1-
<PAGE>   91
                                   EXHIBIT E

                           SUPPORT SERVICE AGREEMENT

                                      ***





                                      -1-
<PAGE>   92
                           SUPPORT SERVICE SCHEDULE

<TABLE>
<CAPTION>
1998 PLAN      EXPORT SHARE      BP DIRECT     OTHER      ANEXCO     STERLING        BP
               VOLUME BASE        EFFORT       COSTS       COST       SHARE         SHARE
<S>            <C>               <C>           <C>        <C>        <C>            <C>



</TABLE>

                                      ***





                                      -2-

<PAGE>   1
                      STERLING CHEMICALS HOLDINGS, INC.
                                 EXHIBIT 11.1
                        EARNINGS PER SHARE COMPUTATION
                (Amounts in thousands, except per share data)


<TABLE>
<CAPTION>
                                                                       Three          Three           Six            Six
                                                                       Months         Months         Months         Months
                                                                       Ended          Ended          Ended          Ended
                                                                      3/31/98        3/31/97        3/31/98        3/31/97
                                                                     ---------      ---------      ---------      ---------
     BASIC EARNINGS PER SHARE
<S>                                                                  <C>            <C>            <C>            <C>
Weighted average of common stock outstanding ...................        11,984         11,118         11,918         10,860

Net Loss .......................................................     $ (16,288)     $  (7,811)     $ (26,433)     $ (15,009)
Less: Preferred dividend requirements and accretion ............          (591)          (162)        (1,219)          (162)
Add: ESOP fair market value adjustment (1) .....................           505           --              505           --
                                                                     ---------      ---------      ---------      ---------

Net loss used in basic loss per share ..........................     $ (16,374)     $  (7,973)     $ (27,147)     $ (15,171)
                                                                     =========      =========      =========      =========

     BASIC LOSS PER SHARE ......................................     $   (1.37)     $   (0.72)     $   (2.28)     $   (1.40)
                                                                     =========      =========      =========      =========

     DILUTED EARNINGS PER SHARE

Weighted average of common stock outstanding ...................        11,984         11,118         11,918         10,860

Total weighted average shares outstanding used in
     diluted loss per share computation (2) ....................        11,984         11,118         11,918         10,860

Net loss .......................................................     $ (16,288)     $  (7,811)     $ (26,433)     $ (15,009)
Less: Preferred dividend requirements and accretion ............          (591)          (162)        (1,219)          (162)
Add: ESOP fair market value adjustment (1) .....................           505           --              505           --
                                                                     ---------      ---------      ---------      ---------

Net loss used in diluted earning per share .....................     $ (16,374)     $  (7,973)     $ (27,147)     $ (15,171)
                                                                     =========      =========      =========      =========

         DILUTED LOSS PER SHARE (2) ............................     $   (1.37)     $   (0.72)     $   (2.28)     $   (1.40)
                                                                     =========      =========      =========      =========
</TABLE>


     (1) This amount reflects the impact of the changes in the estimated fair 
market value of the Company's Employee Stock Ownership Plan ("ESOP") shares
that have been released to plan participants.

     (2) Due to losses resulting in anti-dilution, same as amount used in basic
computation.


                                       25

<PAGE>   1
  Exhibit 15.1

Deloitte & Touche LLP
333 Clay Street
Suite 2300
Houston, Texas 77002

May 13, 1998

Sterling Chemicals Holdings, Inc.
1200 Smith Street, Suite 1900
Houston, Texas 77094

We have made a review, in accordance with standards established by the American
Institute of Certified Public Accountants, of the unaudited interim financial
information of Sterling Chemicals Holdings, Inc. and subsidiaries for the
three-month and six-month periods ended March 31, 1998 and 1997 as indicated in
our report dated May 12, 1998; because we did not perform an audit, we expressed
no opinion on that information.

We are aware that our report referred to above, which is included in your
Quarterly Report on Form 10-Q for the quarter ended March 31, 1998, is
incorporated by reference in Registration Statement No. 333-30917 for Sterling
Chemicals Holdings, Inc. on Form S-3.

We also are aware that the aforementioned report, pursuant to Rule 436(c) under
the Securities Act of 1933, is not considered a part of the Registration
Statement prepared or certified by an accountant or a report prepared or
certified by an accountant within the meaning of Sections 7 and 11 of that Act.



DELOITTE & TOUCHE LLP



                                       26

<TABLE> <S> <C>

<ARTICLE> 5
<CIK> 0000795662
<NAME> STERLING CHEMICALS HOLDING, INC.
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-1998
<PERIOD-START>                             OCT-01-1997
<PERIOD-END>                               MAR-31-1998
<CASH>                                           8,841
<SECURITIES>                                         0
<RECEIVABLES>                                  134,942
<ALLOWANCES>                                   (1,367)
<INVENTORY>                                    100,270
<CURRENT-ASSETS>                               262,612
<PP&E>                                         748,896
<DEPRECIATION>                               (274,665)
<TOTAL-ASSETS>                                 833,190
<CURRENT-LIABILITIES>                          153,091
<BONDS>                                        884,784
                           17,013
                                          0
<COMMON>                                           120
<OTHER-SE>                                   (319,798)
<TOTAL-LIABILITY-AND-EQUITY>                   833,190
<SALES>                                        434,740
<TOTAL-REVENUES>                               434,740
<CGS>                                          397,855
<TOTAL-COSTS>                                  397,855
<OTHER-EXPENSES>                                26,620
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              50,273
<INCOME-PRETAX>                               (40,008)
<INCOME-TAX>                                  (13,575)
<INCOME-CONTINUING>                           (26,433)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (26,433)
<EPS-PRIMARY>                                   (2.28)
<EPS-DILUTED>                                   (2.28)
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 5
<CIK> 0001014669
<NAME> STERLING CHEMICALS, INC.
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-1998
<PERIOD-START>                             OCT-01-1997
<PERIOD-END>                               MAR-31-1998
<CASH>                                           8,793
<SECURITIES>                                         0
<RECEIVABLES>                                  136,405
<ALLOWANCES>                                   (1,367)
<INVENTORY>                                    100,270
<CURRENT-ASSETS>                               262,402
<PP&E>                                         748,896
<DEPRECIATION>                               (274,665)
<TOTAL-ASSETS>                                 829,475
<CURRENT-LIABILITIES>                          153,094
<BONDS>                                        768,947
                                0
                                          0
<COMMON>                                             0
<OTHER-SE>                                   (199,837)
<TOTAL-LIABILITY-AND-EQUITY>                   829,475
<SALES>                                        434,740
<TOTAL-REVENUES>                               434,740
<CGS>                                          397,855
<TOTAL-COSTS>                                  397,855
<OTHER-EXPENSES>                                25,840
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              41,679
<INCOME-PRETAX>                               (30,634)
<INCOME-TAX>                                  (10,192)
<INCOME-CONTINUING>                           (20,442)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (20,442)
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        

</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission