REXENE CORP
DEFS14A, 1997-07-28
PLASTIC MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS
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<PAGE>   1
 
                                  SCHEDULE 14A
                                 (RULE 14A-101)
 
                    INFORMATION REQUIRED IN PROXY STATEMENT
 
                            SCHEDULE 14A INFORMATION
 
          PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES
                EXCHANGE ACT OF 1934 (AMENDMENT NO.           )
 
     Filed by the Registrant [X]
     Filed by a Party other than the Registrant [ ]
     Check the appropriate box:
   
     [ ] Preliminary Proxy Statement       [ ] Confidential, for Use of the
                                               Commission Only (as permitted by
                                               Rule 14a-6(e)(2))
    
   
     [X] Definitive Proxy Statement
    
     [ ] Definitive Additional Materials
     [ ] Soliciting Material Pursuant to sec. 240.14a-11(c) or sec. 240.14a-12
                               REXENE CORPORATION
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified in its Charter)
 
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
 
Payment of Filing Fee (Check the appropriate box):
     [ ] No fee required.
   
     [ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(l) and
         0-11.
    
 
     (1) Title of each class of securities to which transaction applies:
 
- --------------------------------------------------------------------------------
   
     (2) Aggregate number of securities to which transaction applies:
    
 
- --------------------------------------------------------------------------------
   
     (3) Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee
is calculated and state how it was determined):
    
 
- --------------------------------------------------------------------------------
   
     (4) Proposed maximum aggregate value of transaction:
    
 
- --------------------------------------------------------------------------------
   
     (5) Total fee paid:
    
 
- --------------------------------------------------------------------------------
 
   
     [X] Fee paid previously with preliminary materials.
    
 
     [ ] Check box if any part of the fee is offset as provided by Exchange Act
Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number, or
the Form or Schedule and the date of its filing.
 
     (1) Amount Previously Paid:
 
- --------------------------------------------------------------------------------
     (2) Form, Schedule or Registration Statement No.:
 
- --------------------------------------------------------------------------------
     (3) Filing Party:
 
- --------------------------------------------------------------------------------
     (4) Date Filed:
 
- --------------------------------------------------------------------------------
<PAGE>   2
 
                                    [REXENE LOGO]
                                5005 LBJ FREEWAY
                              DALLAS, TEXAS 75244
 
   
                                                                   July 28, 1997
    
 
Dear Stockholder:
 
   
     You are cordially invited to attend a Special Meeting of Stockholders (the
"Special Meeting") of Rexene Corporation (the "Company") to be held at 9:00
a.m., central time, on Tuesday, August 26, 1997, at the Westin Galleria Hotel,
13340 Dallas Parkway, Dallas, Texas.
    
 
     As described in the accompanying Proxy Statement, at the Special Meeting
you will be asked to consider and vote upon a proposal to approve and adopt an
Agreement and Plan of Merger, dated as of June 9, 1997 (the "Merger Agreement"),
by and among Huntsman Corporation ("Huntsman"), Huntsman Centennial Corporation
("Sub") and the Company pursuant to which Sub will be merged with and into the
Company (the "Merger"), with the Company continuing as the surviving corporation
and becoming a wholly owned subsidiary of Huntsman. Pursuant to the Merger
Agreement, stockholders of the Company will be entitled to receive $16.00 in
cash for each share of the Company's common stock owned by them. Consummation of
the Merger is subject to certain conditions, including approval and adoption of
the Merger Agreement by the affirmative vote of the holders of a majority of the
outstanding shares of the Company's common stock.
 
     Your Board of Directors has carefully reviewed and considered the terms and
conditions of the Merger Agreement and has determined that the Merger Agreement
and the Merger are fair to and in the best interests of the Company and its
stockholders, and has approved and adopted the Merger Agreement. In addition,
the Company's financial advisors, Schroder & Co. Inc. and Smith Barney Inc., has
each rendered its opinion to the effect that, as of the date of such opinion and
based upon and subject to certain matters stated therein, the consideration to
be received by holders of the Company's common stock in the Merger was fair,
from a financial point of view, to such holders. THE BOARD OF DIRECTORS
RECOMMENDS THAT YOU VOTE "FOR" APPROVAL AND ADOPTION OF THE MERGER AGREEMENT.
 
     Detailed information concerning the proposed Merger is set forth in the
accompanying Proxy Statement. I urge you to read the enclosed material carefully
and request that you promptly complete and return the enclosed proxy in the
enclosed return envelope, which requires no postage if mailed in the United
States. If you attend the Special Meeting, you may vote in person even if you
have previously returned your proxy. YOUR VOTE IS IMPORTANT REGARDLESS OF THE
NUMBER OF SHARES YOU OWN.
 
                                            Sincerely,
 
                                            /s/ ANDREW J. SMITH
                                            Andrew J. Smith
                                            Chairman of the Board
                                            and Chief Executive Officer
<PAGE>   3
 
                               REXENE CORPORATION
                                5005 LBJ FREEWAY
                              DALLAS, TEXAS 75244
 
                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
   
                     TO BE HELD ON TUESDAY, AUGUST 26, 1997
    
 
To Our Stockholders:
 
   
     Notice is hereby given that a Special Meeting of Stockholders (the "Special
Meeting") of Rexene Corporation, a Delaware corporation (the "Company"), will be
held on Tuesday, August 26, 1997, at 9:00 a.m., central time, at the Westin
Galleria Hotel, 13340 Dallas Parkway, Dallas, Texas, for the following purpose:
    
 
          To consider and vote upon a proposal to approve and adopt an Agreement
     and Plan of Merger, dated as of June 9, 1997 (the "Merger Agreement"), by
     and among Huntsman Corporation, a Utah corporation ("Huntsman"), Huntsman
     Centennial Corporation, a Delaware corporation and a wholly owned
     subsidiary of Huntsman ("Sub"), and the Company, pursuant to which, (i) Sub
     will be merged with and into the Company (the "Merger"), with the Company
     continuing as the surviving corporation and becoming a wholly owned
     subsidiary of Huntsman and (ii) each outstanding share of common stock, par
     value $.01 per share, of the Company (the "Common Stock"), other than
     shares held by the Company or any direct or indirect wholly owned
     subsidiary of the Company, shares held by Huntsman or any direct or
     indirect wholly owned subsidiary of Huntsman and shares held by the
     stockholders, if any, who properly exercise their appraisal rights under
     Delaware law, will be converted into the right to receive $16.00 in cash,
     without interest.
 
   
     July 25, 1997 has been fixed as the record date for the determination of
stockholders entitled to notice of and to vote at the Special Meeting or any
adjournments or postponements thereof. Only holders of record of Common Stock at
the close of business on that date will be entitled to notice of and to vote at
the Special Meeting or any adjournments or postponements thereof.
    
 
     Holders of Common Stock who do not vote in favor of approving and adopting
the Merger Agreement and who otherwise comply with the applicable statutory
procedures of Section 262 of the Delaware General Corporation Law (the "DGCL")
will be entitled to appraisal rights under Section 262 of the DGCL. A summary of
the provisions of Section 262 of the DGCL, including a summary of the
requirements that must be complied with by holders of Common Stock desiring to
assert appraisal rights, is set forth in the accompanying Proxy Statement under
the heading "The Merger -- Appraisal Rights." The entire text of Section 262 of
the DGCL is attached as Annex D to the Proxy Statement.
<PAGE>   4
 
     The accompanying Proxy Statement describes the Merger Agreement, the
proposed Merger and certain actions to be taken in connection with the Merger.
To ensure that your vote will be counted, please complete, date and sign the
enclosed proxy card and return it promptly in the enclosed postage-paid
envelope, whether or not you plan to attend the Special Meeting. You may revoke
your proxy in the manner described in the accompanying Proxy Statement at any
time before it is voted at the Special Meeting. Executed proxies with no
instructions indicated thereon will be voted "FOR" approval and adoption of the
Merger Agreement.
 
                                            By Order Of The Board Of Directors,
 
                                            /s/ BERNARD J. MCNAMEE
 
   
                                            Bernard J. McNamee
    
                                            Secretary
 
Dallas, Texas
   
July 28, 1997
    
 
     YOUR VOTE IS IMPORTANT. TO VOTE YOUR SHARES, PLEASE MARK, DATE, SIGN AND
RETURN THE ENCLOSED PROXY CARD AS SOON AS POSSIBLE IN THE ENCLOSED
POSTAGE-PREPAID ENVELOPE, WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING.
 
     PLEASE DO NOT SEND YOUR COMMON STOCK CERTIFICATES AT THIS TIME. IF THE
MERGER IS CONSUMMATED, YOU WILL BE SENT INSTRUCTIONS REGARDING THE SURRENDER OF
YOUR CERTIFICATES.
<PAGE>   5
 
                               REXENE CORPORATION
                                5005 LBJ FREEWAY
                              DALLAS, TEXAS 75244
                             ---------------------
 
                                PROXY STATEMENT
                             ---------------------
 
                     FOR A SPECIAL MEETING OF STOCKHOLDERS
   
                     TO BE HELD ON TUESDAY, AUGUST 26, 1997
    
 
   
     This Proxy Statement is being furnished to holders of common stock, par
value $.01 per share ("Common Stock"), of Rexene Corporation, a Delaware
corporation (the "Company"), in connection with the solicitation of proxies by
and on behalf of the Company's Board of Directors (the "Board") for use at a
special meeting of stockholders to be held at 9:00 a.m., central time, on
Tuesday, August 26, 1997, at the Westin Galleria Hotel, 13340 Dallas Parkway,
Dallas, Texas, and at any adjournments or postponements thereof (the "Special
Meeting"). This Proxy Statement and the accompanying Notice and Proxy Card are
first being mailed to holders of Common Stock entitled to notice of, and to vote
at, the Special Meeting on or about July 28, 1997.
    
 
     At the Special Meeting, holders of Common Stock will be asked to consider
and vote upon a proposal to approve and adopt an Agreement and Plan of Merger,
dated as of June 9, 1997 (the "Merger Agreement"), by and among Huntsman
Corporation, a Utah corporation ("Huntsman"), Huntsman Centennial Corporation, a
Delaware corporation and a wholly owned subsidiary of Huntsman ("Sub"), and the
Company. A copy of the Merger Agreement is attached to this Proxy Statement as
Annex A. Pursuant to the Merger Agreement, (i) Sub will be merged with and into
the Company (the "Merger"), with the Company continuing as the surviving
corporation and becoming a wholly owned subsidiary of Huntsman and (ii) each
outstanding share of Common Stock, other than shares held by the Company or any
direct or indirect wholly owned subsidiary of the Company, shares held by
Huntsman or any direct or indirect wholly owned subsidiary of Huntsman and
shares held by the stockholders, if any, who properly exercise their appraisal
rights under Delaware law, will be converted into the right to receive $16.00 in
cash, without interest. Holders of Common Stock who do not vote in favor of
approving and adopting the Merger Agreement and who otherwise comply with the
applicable statutory procedures of Section 262 of the Delaware General
Corporation Law (the "DGCL") will be entitled to appraisal rights under Section
262 of the DGCL. See "The Merger -- Appraisal Rights."
 
     THE BOARD RECOMMENDS THAT STOCKHOLDERS VOTE "FOR" APPROVAL AND ADOPTION OF
THE MERGER AGREEMENT.
 
     All information contained in this Proxy Statement concerning Huntsman and
its subsidiaries, including Sub, has been supplied by Huntsman and has not been
independently verified by the Company. Except as otherwise indicated, all other
information contained in this Proxy Statement (or, as permitted by applicable
rules and regulations of the Securities and Exchange Commission, incorporated by
reference herein) has been supplied or prepared by the Company.
 
   
               The date of this Proxy Statement is July 28, 1997.
    
<PAGE>   6
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
AVAILABLE INFORMATION.......................................    1
FORWARD-LOOKING STATEMENTS..................................    2
SUMMARY.....................................................    3
  The Companies.............................................    3
  The Special Meeting.......................................    4
  The Merger................................................    5
  Selected Financial Data...................................    8
THE SPECIAL MEETING.........................................   10
  General...................................................   10
  Matters to Be Considered at the Special Meeting...........   10
  Record Date; Voting at the Special Meeting................   10
  Proxies; Revocation of Proxies............................   11
  Solicitation of Proxies...................................   11
THE MERGER..................................................   12
  Background of the Merger..................................   12
  The Company's Reasons for the Merger; Recommendation of
     the Board of Directors.................................   17
  Opinions of the Company's Financial Advisors..............   18
  Interests of Certain Persons in the Merger................   26
  Financing the Merger......................................   28
  Accounting Treatment......................................   28
  Certain Federal Income Tax Consequences...................   29
  Regulatory Approvals......................................   29
  Effect of Merger on Senior Notes..........................   30
  Certain Consequences of the Merger........................   30
  Appraisal Rights..........................................   30
  Certain Legal Matters.....................................   32
THE MERGER AGREEMENT........................................   33
  The Merger................................................   33
  Option Plans..............................................   34
  Representations and Warranties............................   34
  Certain Covenants.........................................   35
  Conditions to the Merger..................................   38
  Termination of the Merger Agreement.......................   39
  Fees and Expenses.........................................   40
  Amendment; Waiver.........................................   41
</TABLE>
    
 
   
THE COMPANIES...............................................   42
  The Company...............................................   42
  Huntsman..................................................   42
SELECTED FINANCIAL DATA.....................................   43
MARKET PRICES OF COMMON STOCK...............................   45
CERTAIN PROJECTIONS OF FUTURE OPERATING RESULTS.............   46
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
  MANAGEMENT................................................   47
STOCKHOLDER PROPOSALS.......................................   49
INDEPENDENT ACCOUNTANTS.....................................   49
INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.............   49
Annex A Agreement and Plan of Merger........................  A-1
Annex B Opinion of Schroder & Co. Inc.......................  B-1
Annex C Opinion of Smith Barney Inc.........................  C-1
Annex D Section 262 of the Delaware General Corporation
  Law.......................................................  D-1
 
    
 
                                        i
<PAGE>   7
 
                             AVAILABLE INFORMATION
 
     The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files periodic reports, proxy statements and other information with
the Securities and Exchange Commission (the "Commission"). The reports, proxy
statements and other information filed by the Company with the Commission may be
inspected and copied at the public reference facilities maintained by the
Commission at 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549, and
also are available for inspection at the Commission's Regional Offices at Seven
World Trade Center, Suite 1300, New York, New York 10048 and 500 West Madison
Street, Suite 1400, Chicago, Illinois 60661. Copies of such material also may be
obtained, at prescribed rates, from the Public Reference Section of the
Commission at 450 Fifth Street, N.W., Washington, D.C. 20549. In addition, the
Company is required to file electronic versions of certain material with the
Commission through the Commission's Electronic Data Gathering, Analysis and
Retrieval (EDGAR) system. The Commission maintains a site on the Internet's
World Wide Web at http://www.sec.gov. that contains reports, proxy and
information statements and other information regarding registrants that file
electronically with the Commission. The Common Stock is listed and traded on the
New York Stock Exchange, Inc. (the "NYSE") and such reports, proxy statements
and other information concerning the Company may also be inspected at the
offices of the NYSE, 20 Broad Street, New York, New York 10005.
 
     NO PERSON IS AUTHORIZED TO PROVIDE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS WITH RESPECT TO THE MATTERS DESCRIBED IN THIS PROXY STATEMENT
OTHER THAN THOSE CONTAINED HEREIN OR IN THE DOCUMENTS INCORPORATED BY REFERENCE
HEREIN. ANY INFORMATION OR REPRESENTATIONS WITH RESPECT TO SUCH MATTERS NOT
CONTAINED HEREIN OR THEREIN MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY
THE COMPANY. THE DELIVERY OF THIS PROXY STATEMENT SHALL NOT, UNDER ANY
CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED
IN THIS PROXY STATEMENT OR IN THE DOCUMENTS INCORPORATED BY REFERENCE HEREIN IS
CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE HEREOF OR THEREOF, AS THE CASE MAY
BE.
 
                                        1
<PAGE>   8
 
                           FORWARD-LOOKING STATEMENTS
 
     Certain information contained or incorporated by reference in this Proxy
Statement, including the information set forth under "Certain Projections of
Future Operating Results" and other statements as to the future financial or
operating performance of the Company, may constitute "forward-looking
statements." The Private Securities Litigation Reform Act of 1995 provides
certain "safe harbor" protections for forward-looking statements in order to
encourage companies to provide prospective information about their businesses.
Forward-looking statements include statements concerning plans, objectives,
goals, strategies, future events or performance, and underlying assumptions and
other statements which are other than statements of historical facts.
Forward-looking statements contained or incorporated by reference in this Proxy
Statement were not prepared in compliance with the published guidelines of the
American Institute of Certified Public Accountants regarding projections or
financial forecasts.
 
   
     The forward-looking statements set forth or incorporated by reference in
this Proxy Statement are based upon various assumptions, many of which are
based, in turn, upon further assumptions, including without limitation,
management's examination of historical operating trends, data contained in the
Company's records and other data available from third parties. Although the
Company believes that such assumptions were reasonable when made, because such
assumptions are inherently subject to significant uncertainties and
contingencies which are difficult or impossible to predict and are beyond the
Company's control, there can be no assurance, and no representation or warranty
is made, that management's expectations, beliefs or projections will result or
be achieved or accomplished. In addition to the other factors and matters
discussed elsewhere herein and in the documents incorporated by reference
herein, factors that, in the view of the Company, could cause actual results to
differ materially from those discussed in the forward-looking statements
include: (i) changes in economic conditions and weather conditions; (ii) changes
in the availability and/or price of feedstocks; (iii) changes in management or
control of the Company; (iv) the inability to obtain new customers or retain
existing customers; (v) significant changes in competitive factors affecting the
Company; (vi) governmental/regulatory actions and initiatives, including those
affecting financings, and environmental/safety requirements; (vii) significant
changes from expectations in actual capital expenditures and operating expenses
and unanticipated project delays; (viii) occurrences affecting the Company's
ability to obtain funds from operations, debt or equity to finance needed
capital expenditures and other investments; (ix) the cyclical nature of the
Company's business; (x) changes in foreign trade and monetary policies, laws and
regulations related to foreign operations, political governmental changes,
inflation and exchange rates, taxes and operating conditions; (xi) significant
changes in tax rates or policies or in rates of inflation or interest; (xii)
significant changes in the Company's relationship with its employees and the
potential adverse effects if labor disputes or grievances were to occur; and
(xiii) changes in accounting principles and/or the application of such
principles by the Company.
    
 
     None of the Company, Huntsman or any of their respective agents, employees
or advisors intend or have any duty or obligation to supplement, amend, update
or revise any of the forward-looking statements contained or incorporated by
reference in this Proxy Statement. Neither the Company nor Huntsman's
independent auditors have examined or compiled such statements or applied any
procedures with respect to such statements. Accordingly, such auditors have not
expressed any opinion or other form of assurance with respect to such
statements.
 
                                        2
<PAGE>   9
 
                                    SUMMARY
 
     The following is a summary of certain information contained elsewhere in
this Proxy Statement. This summary is not intended to be complete and is
qualified in its entirety by reference to the more detailed information
contained elsewhere, or incorporated by reference, in this Proxy Statement and
the Annexes hereto. Stockholders are urged to read this Proxy Statement and the
Annexes hereto carefully and in their entirety. Unless otherwise defined herein,
all capitalized terms used in this Summary have the respective meanings assigned
to them elsewhere in this Proxy Statement.
 
                                 THE COMPANIES
 
The Company................  The Company manufactures and markets a wide variety
                             of products through its two operating divisions,
                             the Rexene Products division and the CT Film
                             division. The products range from value-added
                             specialty products, such as customized plastic
                             films and specialty polymers, to commodity
                             petrochemicals, such as styrene. These products are
                             sold to a diverse customer base and are used in a
                             wide variety of industrial and consumer-related
                             applications. The Company's principal products are
                             polyethylene, polypropylene, REXtac(R) amorphous
                             polyalphaolefin and REXflex(R) flexible polyolefin
                             polymers, styrene and plastic film. In addition,
                             the Company manufactures, primarily for its own
                             consumption, ethylene and propylene, the two basic
                             chemical building blocks of the Company's principal
                             products.
 
Huntsman...................  Huntsman, with headquarters in Salt Lake City,
                             Utah, is one of the largest privately-held chemical
                             companies in North America and an integrated
                             producer of commodity and specialty chemicals and
                             polymers. Huntsman's business is comprised of five
                             product groups: (i) base chemicals; (ii)
                             intermediate chemicals; (iii) performance products;
                             (iv) polymers and resins; and (v) packaging
                             products. Huntsman is the largest North American
                             producer of polystyrene, butadiene, maleic
                             anhydride and certain specialty amines and
                             carbonates. In addition, Huntsman is among the five
                             largest North American producers of styrene,
                             propylene oxide, polypropylene, expandable
                             polystyrene, methyl tertiary butyl ether,
                             cyclohexane, ethylene oxide, ethanolamines and
                             linear alkylbenzene.
 
Sub........................  Sub is a newly incorporated Delaware corporation
                             organized in connection with the Merger, and has
                             not carried on any activities other than in
                             connection with the Merger and the financing
                             necessary to complete the Merger. Sub is a wholly
                             owned subsidiary of Huntsman. Upon the consummation
                             of the Merger, Sub will be merged with and into the
                             Company, with the Company continuing as the
                             surviving corporation (the "Surviving Corporation")
                             and becoming a wholly owned subsidiary of Huntsman.
                                        3
<PAGE>   10
 
                              THE SPECIAL MEETING
 
   
Time, Date and Place.......  The Special Meeting will be held at 9:00 a.m.,
                             central time, on Tuesday, August 26, 1997, at the
                             Westin Galleria Hotel, 13340 Dallas Parkway,
                             Dallas, Texas.
    
 
Matters to Be Considered at
the Special Meeting........  At the Special Meeting, stockholders will consider
                             and vote upon a proposal to approve and adopt the
                             Merger Agreement. See "The Special
                             Meeting -- Matters to Be Considered at the Special
                             Meeting."
 
   
Record Date; Voting at the
  Special Meeting..........  July 25, 1997 has been fixed as the record date
                             (the "Record Date") for the determination of
                             stockholders entitled to notice of, and to vote at,
                             the Special Meeting. Accordingly, only stockholders
                             of record at the close of business on the Record
                             Date will be entitled to vote at the Special
                             Meeting. At the close of business on July 23, 1997,
                             the most recent practicable date prior to the date
                             of this Proxy Statement, there were 18,848,867
                             shares of Common Stock outstanding and entitled to
                             vote. Stockholders of record on the Record Date are
                             entitled to one vote per share, exercisable in
                             person or by properly executed proxy, upon each
                             matter properly submitted for the vote of
                             stockholders at the Special Meeting. The presence,
                             in person or by properly executed proxy, of the
                             holders of a majority of the outstanding shares of
                             Common Stock is necessary to constitute a quorum at
                             the Special Meeting. The affirmative vote of the
                             holders of a majority of the outstanding shares of
                             Common Stock is required to approve and adopt the
                             Merger Agreement. Abstentions and broker non-votes
                             will be counted as votes against the proposal to
                             approve and adopt the Merger Agreement. See "The
                             Special Meeting -- Record Date; Voting at the
                             Special Meeting."
    
 
Proxies; Revocation of
Proxies....................  This Proxy Statement is being furnished to
                             stockholders of record at the close of business on
                             the Record Date in connection with the solicitation
                             of proxies by and on behalf of the Board for use at
                             the Special Meeting. All shares of Common Stock
                             which are represented at the Special Meeting by
                             properly executed proxies received and not duly and
                             timely revoked will be voted at the Special Meeting
                             in accordance with the instructions contained
                             therein. In the absence of contrary instructions,
                             such shares will be voted "FOR" the approval and
                             adoption of the Merger Agreement.
 
                             Any proxy signed and returned by a stockholder may
                             be revoked by such stockholder at any time before
                             it is voted by giving due notice of such revocation
                             to the Secretary of the Company (5005 LBJ Freeway,
                             Dallas, Texas 75244), by signing and delivering a
                             proxy bearing a later date or by attending the
                             Special Meeting and voting in person. Attendance at
                             the Special Meeting without taking other
                             affirmative action as aforementioned will not
                             constitute a revocation of a proxy. See "The
                             Special Meeting -- Proxies; Revocation of Proxies."
                                        4
<PAGE>   11
 
                                   THE MERGER
 
Effects of the Merger;
Merger Consideration.......  Upon consummation of the Merger, (i) Sub will be
                             merged with and into the Company, with the Company
                             continuing as the surviving corporation and
                             becoming a wholly owned subsidiary of Huntsman and
                             (ii) each outstanding share of Common Stock, other
                             than shares held by the Company or any direct or
                             indirect wholly owned subsidiary of the Company,
                             shares held by Huntsman or any direct or indirect
                             wholly owned subsidiary of Huntsman and shares held
                             by stockholders, if any, who properly exercise
                             their appraisal rights under Delaware law, will be
                             converted into the right to receive $16.00 in cash,
                             without interest (the "Merger Consideration").
 
Treatment of Stock
Options....................  Immediately prior to the effective time of the
                             Merger (the "Effective Time"), (i) each option to
                             purchase shares of Common Stock ("Options")
                             outstanding under any of the Option Plans (as
                             defined herein) will become fully exercisable and
                             vested, (ii) each Option will be cancelled and
                             (iii) Huntsman will (or will cause Sub to) pay to
                             the holder of each Option, net of applicable
                             withholding taxes, an amount in cash equal to the
                             product of (A) the excess of the Merger
                             Consideration over the exercise price of such
                             Option and (B) the number of shares subject to such
                             Option. See "The Merger Agreement -- Option Plans."
 
Recommendation of the
  Company's Board of
  Directors................  The Board has determined that the Merger Agreement
                             and the Merger are fair to and in the best
                             interests of the Company and its stockholders and
                             has approved and adopted the Merger Agreement.
                             ACCORDINGLY, THE BOARD RECOMMENDS THAT STOCKHOLDERS
                             VOTE "FOR" APPROVAL AND ADOPTION OF THE MERGER
                             AGREEMENT.
 
                             In reaching its determination that the Merger
                             Agreement and the Merger are fair to and in the
                             best interests of the Company and its stockholders,
                             the Board considered a number of factors, as more
                             fully described under "The Merger -- The Company's
                             Reasons for the Merger; Recommendation of the Board
                             of Directors."
 
   
Opinions of the Company's
  Financial Advisors.......  Schroder & Co. Inc., formerly known as Schroder
                             Wertheim & Co. Incorporated ("Schroders"), has
                             acted as a financial advisor to the Company in
                             connection with the Merger and has delivered to the
                             Board a written opinion, dated June 9, 1997, to the
                             effect that, as of the date of such opinion and
                             based upon and subject to certain matters stated
                             therein, the Merger Consideration was fair, from a
                             financial point of view, to the holders of Common
                             Stock. The full text of the written opinion of
                             Schroders, dated June 9, 1997, which sets forth the
                             assumptions made, matters considered and
                             limitations on the review undertaken, is attached
                             as Annex B to this Proxy Statement and should be
                             read carefully in its entirety. The opinion of
                             Schroders is directed to the Board and relates only
                             to the fairness of the Merger Consideration from a
                             financial point of view, does not address any other
                             aspect of the Merger or related transactions and
                             does not constitute a recommendation to any
                             stockholder as to how such stockholder should vote
                             at the Special
    
                                        5
<PAGE>   12
 
   
                             Meeting. See "The Merger -- Opinions of the
                             Company's Financial Advisors -- Opinion of
                             Schroders."
    
 
                             Smith Barney Inc. ("Smith Barney") has acted as a
                             financial advisor to the Company in connection with
                             the Merger and has delivered to the Board a written
                             opinion, dated June 9, 1997, to the effect that, as
                             of the date of such opinion and based upon and
                             subject to certain matters stated therein, the
                             Merger Consideration was fair, from a financial
                             point of view, to the holders of Common Stock. The
                             full text of the written opinion of Smith Barney,
                             dated June 9, 1997, which sets forth the
                             assumptions made, matters considered and
                             limitations on the review undertaken, is attached
                             as Annex C to this Proxy Statement and should be
                             read carefully in its entirety. The opinion of
                             Smith Barney is directed to the Board and relates
                             only to the fairness of the Merger Consideration
                             from a financial point of view, does not address
                             any other aspect of the Merger or related
                             transactions and does not constitute a
                             recommendation to any stockholder as to how such
                             stockholder should vote at the Special Meeting. See
                             "The Merger -- Opinions of the Company's Financial
                             Advisors -- Opinion of Smith Barney."
 
Interests of Certain
Persons in the Merger......  Certain members of the Company's management and of
                             the Board will receive economic benefits as a
                             result of the Merger. For information concerning
                             such benefits, see "The Merger -- Interests of
                             Certain Persons in the Merger."
 
Financing the Merger.......  The total amount required to pay the Merger
                             Consideration to the Company's stockholders,
                             refinance the Company's existing bank debt and pay
                             estimated fees, expenses and other transaction
                             costs of Huntsman and Sub in connection with the
                             Merger will be approximately $468 million. Sub will
                             obtain such amount from Huntsman in the form of
                             equity and debt investments by Huntsman in Sub.
                             Huntsman intends to borrow such amounts under its
                             existing credit facilities. See "The
                             Merger -- Financing the Merger."
 
Conditions to the Merger...  The Merger is subject to certain customary closing
                             conditions, including, without limitation, the
                             approval of the Merger Agreement by the requisite
                             vote of the stockholders of the Company in
                             accordance with applicable law, the representations
                             and warranties of each of Huntsman, Sub and the
                             Company being true and correct in all material
                             respects on the date of the Merger Agreement and as
                             of the Effective Time, each of Huntsman, Sub and
                             the Company having performed in all material
                             respects its obligations to be performed prior to
                             the Effective Time under the Merger Agreement, and
                             there having not occurred since March 31, 1997 an
                             event the effect of which, on an overall basis,
                             would have (or, under certain circumstances, would
                             be likely to have) a Material Adverse Effect (as
                             defined in the Merger Agreement) on the Company and
                             its Subsidiaries, taken as a whole, other than
                             resulting from events previously disclosed publicly
                             or under the Merger Agreement.
 
Termination; Certain
Fees.......................  The Merger Agreement will be subject to termination
                             at any time prior to the Effective Time by the
                             mutual consent of Huntsman and the Company or by
                             either Huntsman or the Company if the Company's
                             stockholders fail to approve and adopt the Merger
                             Agreement at the Special Meeting, any governmental
                             entity has taken action to prohibit
                                        6
<PAGE>   13
 
                             the Merger and such action has become final and
                             binding, or the Merger is not consummated by
                             October 31, 1997. The Merger Agreement also will be
                             subject to termination by either Huntsman or the
                             Company under certain other circumstances described
                             herein. If the Merger Agreement is terminated by
                             Huntsman or the Company under certain circumstances
                             described herein, the Company will be obligated to
                             pay to Huntsman certain termination fees. In
                             addition, if the Merger Agreement is terminated by
                             the Company under certain circumstances described
                             herein, Huntsman will be obligated to pay to the
                             Company certain termination fees. See "The Merger
                             Agreement -- Termination of the Merger Agreement"
                             and "-- Fees and Expenses."
 
Appraisal Rights...........  Holders of Common Stock on the Record Date who do
                             not vote in favor of approving and adopting the
                             Merger Agreement and who otherwise comply with the
                             applicable statutory procedures of Section 262 of
                             the DGCL will be entitled to appraisal rights under
                             Section 262 of the DGCL. A summary of the
                             provisions of Section 262 of the DGCL, including a
                             summary of the requirements with which holders of
                             Common Stock desiring to assert appraisal rights
                             must comply, is contained herein under the heading
                             "The Merger -- Appraisal Rights." The entire text
                             of Section 262 of the DGCL is attached hereto as
                             Annex D.
 
Certain Federal Income Tax
  Consequences.............  The receipt of cash by a stockholder of the Company
                             pursuant to the Merger will be a taxable
                             transaction for federal income tax purposes and may
                             also be taxable under applicable state, local and
                             foreign income and other tax laws. A stockholder
                             will recognize gain or loss in an amount equal to
                             the difference between the adjusted tax basis of
                             his or her Common Stock and the amount of cash
                             received in exchange therefor in the Merger. Such
                             gain or loss will be capital gain or loss if the
                             Common Stock is a capital asset in the hands of the
                             stockholder and will be long-term capital gain or
                             loss if the holding period exceeds one year. See
                             "The Merger -- Certain Federal Income Tax
                             Consequences."
 
   
Certain Information In
  Connection With the
  Common Stock.............  The Common Stock is quoted on the NYSE. On July 18,
                             1996, the trading date preceding the date on which
                             Huntsman's interest in acquiring the Company was
                             first publicly disclosed, the high and low sales
                             price of the Common Stock, as reported on the NYSE
                             Composite Tape, were $9 1/4 and $9 1/8 per share,
                             respectively. On June 6, 1997, the last trading
                             date prior to the public announcement of the
                             execution of the Merger Agreement, the high and low
                             sales prices of the Common Stock, as reported on
                             the NYSE Composite Tape, were $15 and $14 7/8 per
                             share, respectively. On July 23, 1997, the high and
                             low sales prices of the Common Stock, as reported
                             on the NYSE Composite Tape, were $15 13/16 and
                            $15 3/4 per share, respectively. Stockholders are
                             urged to obtain current market quotations for the
                             Common Stock prior to making any decision with
                             respect to the Merger. See "Market Prices of Common
                             Stock."
    
                                        7
<PAGE>   14
 
                            SELECTED FINANCIAL DATA
 
     The following table sets forth selected financial data for the Company for
the periods indicated. The data set forth below should be read in conjunction
with the Company's Consolidated Financial Statements and Notes thereto included
in the Company's Annual Report on Form 10-K for the year ended December 31, 1996
and the Company's Quarterly Report on Form 10-Q for the quarter ended March 31,
1997, which are incorporated herein by reference. See "Incorporation of Certain
Documents by Reference."
 
<TABLE>
<CAPTION>
                                                                                                 THREE MONTHS    NINE MONTHS
                                  THREE MONTHS                                                      ENDED           ENDED
                                 ENDED MARCH 31,         TWELVE MONTHS ENDED DECEMBER 31,        DECEMBER 31,   SEPTEMBER 30,
                               -------------------   -----------------------------------------   ------------   -------------
                                 1997       1996       1996       1995       1994       1993         1992        1992(1)(2)
                               --------   --------   --------   --------   --------   --------   ------------   -------------
                                                           (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                            <C>        <C>        <C>        <C>        <C>        <C>        <C>            <C>
CONSOLIDATED STATEMENTS OF
  OPERATIONS DATA:
Net sales....................  $163,716   $139,687   $587,761   $615,238   $537,957   $429,353     $ 98,854       $316,106
Operating income.............    16,180     14,028     63,436    125,146     75,085     14,504        1,418          9,392
Income (loss) before
  extraordinary gain
  (loss).....................     6,114      6,470     29,731     65,443     21,504    (25,243)      (6,528)       (31,476)
Extraordinary gain (loss),
  net of income taxes........        --         --         --         --    (25,831)        --           --        123,672
                               --------   --------   --------   --------   --------   --------     --------       --------
Net income (loss)............  $  6,114   $  6,470   $ 29,731   $ 65,443   $ (4,327)  $(25,243)    $ (6,528)      $ 92,196
                               ========   ========   ========   ========   ========   ========     ========       ========
Weighted average shares
  outstanding................    19,272     19,126     19,168     19,126     11,663     10,501       10,501
                               ========   ========   ========   ========   ========   ========     ========
Income (loss) per share(2):
Income (loss) before
  extraordinary loss.........  $   0.32   $   0.34   $   1.55   $   3.42   $   1.84   $  (2.40)    $  (0.62)
Extraordinary loss...........        --         --         --         --      (2.21)        --           --
                               --------   --------   --------   --------   --------   --------     --------
Net income (loss) per
  share......................  $   0.32   $   0.34   $   1.55   $   3.42   $  (0.37)  $  (2.40)    $  (0.62)
                               ========   ========   ========   ========   ========   ========     ========
Dividends per share..........  $    .04   $    .04   $    .16   $    .04   $     --   $     --     $     --
                               ========   ========   ========   ========   ========   ========     ========
</TABLE>
 
   
<TABLE>
<CAPTION>
                                  AT MARCH 31,                           AT DECEMBER 31,
                               -------------------   --------------------------------------------------------
                                 1997       1996       1996       1995       1994       1993         1992
                               --------   --------   --------   --------   --------   --------   ------------
<S>                            <C>        <C>        <C>        <C>        <C>        <C>        <C>            <C>
CONSOLIDATED BALANCE SHEET
  DATA:
Working capital..............  $127,439   $101,496   $ 92,089   $108,416   $140,039   $109,381     $104,824
Total assets.................   625,815    500,571    597,542    520,591    506,954    434,307      423,591
Long-term debt and other
  noncurrent liabilities.....   393,365    295,266    350,383    296,080    366,766    397,091      367,327
Stockholders' equity
  (deficit)..................   173,419    145,653    169,051    140,151     74,876     (5,137)      20,106
</TABLE>
    
 
- ---------------
 
(1) In connection with a reorganization under Chapter 11 of the United States
    Bankruptcy Code, the Company adopted as of September 30, 1992, the American
    Institute of Certified Public Accountants' Statement of Position No. 90-7,
    "Financial Reporting by Entities in Reorganization Under the Bankruptcy
    Code" (the "Reorganization SOP"). The Company's basis of accounting for
    financial reporting purposes changed as a result of adopting the
    Reorganization SOP. Accordingly, the results of operations after September
    30, 1992 are not comparable to results of operations prior to such date, and
    the results of operations for the nine months ended September 30, 1992 and
    the three months ended December 31, 1992 have not been aggregated.
 
(2) Per share data for the pre-emergence periods is not presented because such
    information is not comparable to the similar information for the
    post-emergence periods.
                                        8
<PAGE>   15
 
   
     On July 15, 1997, the Company announced results for the second quarter of
1997. Set forth below is a summary of the Company's results for the three- and
six-month periods ended June 30, 1997 and, for comparison purposes, the
Company's actual results for the three- and six-month periods ended June 30,
1996.
    
 
   
<TABLE>
<CAPTION>
                                      THREE MONTHS ENDED           SIX MONTHS ENDED
                                           JUNE 30,                    JUNE 30,
                                    ----------------------      ----------------------
                                      1997          1996          1997          1996
                                    --------      --------      --------      --------
                                          (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                                        UNAUDITED
<S>                                 <C>           <C>           <C>           <C>
Net Sales.........................  $151,937      $146,462      $315,653      $286,149
Operating Income..................    21,976        15,646        38,156        29,674
Interest expense, net.............     5,896         3,832        11,079         7,430
                                    --------      --------      --------      --------
Income before extraordinary
  item............................     8,915         7,492        15,029        13,962
Extraordinary item, net of tax....      (694)           --          (694)           --
                                    --------      --------      --------      --------
Net Income........................     8,221         7,492        14,335        13,962
                                    ========      ========      ========      ========
Income per share before
  extraordinary item..............  $   0.46      $   0.39      $   0.78      $   0.73
Extraordinary item per share, net
  of tax(1).......................     (0.04)           --         (0.04)           --
                                    --------      --------      --------      --------
Net Income per share..............  $   0.42      $   0.39      $   0.74      $   0.73
                                    ========      ========      ========      ========
Weighted average shares...........    19,303        19,139        19,289        19,132
                                    ========      ========      ========      ========
</TABLE>
    
 
- ---------------
 
   
(1) Reflects the accelerated amortization of previously incurred debt financing
    fees as part of a new credit agreement completed in May 1997.
    
 
   
     Net income per share for the three and six months ended June 30, 1997
reflects a charge for costs associated with the Company's proxy solicitation
relating to the Wyser-Pratte Proposals (as defined herein) of four cents and
eight cents per share, respectively.
    
 
   
     Selling prices for polyethylene and CT Film were higher in the second
quarter of 1997 as compared with the second quarter of 1996 due to strong
demand.  Selling prices for all of the Company's other product lines were stable
except for styrene, which experienced lower prices in the second quarter.  Sales
volumes for all of the Company's major product lines decreased slightly during
the second quarter of 1997 as compared with the second quarter of 1996. Selling
prices for all of the Company's major product lines except styrene also
increased for the six months ended June 30, 1997 as compared with the six months
ended June 30, 1996.
    
                                        9
<PAGE>   16
 
                              THE SPECIAL MEETING
 
GENERAL
 
   
     This Proxy Statement is being furnished to holders of Common Stock in
connection with the solicitation of proxies by and on behalf of the Board for
use at the Special Meeting to be held at 9:00 a.m., central time, on Tuesday,
August 26, 1997, at the Westin Galleria Hotel, 13340 Dallas Parkway, Dallas,
Texas, and at any adjournments or postponements thereof. This Proxy Statement
and the accompanying Notice and Proxy Card are first being mailed to holders of
Common Stock entitled to notice of, and to vote at, the Special Meeting, on or
about July 28, 1997.
    
 
MATTERS TO BE CONSIDERED AT THE SPECIAL MEETING
 
     At the Special Meeting, stockholders will be asked to consider and vote
upon a proposal to approve and adopt the Merger Agreement. The Board has
determined that the Merger Agreement and the Merger are fair to and in the best
interests of the Company and its stockholders and has approved and adopted the
Merger Agreement. ACCORDINGLY, THE BOARD RECOMMENDS THAT STOCKHOLDERS VOTE "FOR"
APPROVAL AND ADOPTION OF THE MERGER AGREEMENT. See "The Merger -- Background of
the Merger" and "-- The Company's Reasons for the Merger; Recommendation of the
Board of Directors."
 
     STOCKHOLDERS ARE REQUESTED PROMPTLY TO COMPLETE, DATE, SIGN AND RETURN THE
ACCOMPANYING PROXY CARD TO THE COMPANY IN THE ENCLOSED POSTAGE-PAID ENVELOPE.
FAILURE TO RETURN A PROPERLY EXECUTED PROXY CARD OR TO VOTE AT THE SPECIAL
MEETING WILL HAVE THE SAME EFFECT AS A VOTE "AGAINST" THE MERGER AGREEMENT.
 
RECORD DATE; VOTING AT THE SPECIAL MEETING
 
   
     July 25, 1997 has been fixed as the Record Date for the determination of
the holders of Common Stock entitled to notice of, and to vote at, the Special
Meeting. Only stockholders of record at the close of business on the Record Date
will be entitled to notice of, and to vote at, the Special Meeting. At the close
of business on July 23, 1997, the most recent practicable date prior to the date
of this Proxy Statement, there were 18,848,867 shares of Common Stock
outstanding and entitled to vote at the Special Meeting, held by approximately
597 stockholders of record.
    
 
     Stockholders of record on the Record Date are entitled to one vote per
share, exercisable in person or by properly executed proxy, upon each matter
properly submitted for the vote of stockholders at the Special Meeting. The
presence, in person or by properly executed proxy, of the holders of a majority
of the outstanding shares of Common Stock is necessary to constitute a quorum at
the Special Meeting.
 
     Holders of Common Stock on the Record Date who do not vote in favor of
approving and adopting the Merger Agreement and who otherwise comply with the
applicable statutory procedures of Section 262 of the DGCL will be entitled to
appraisal rights under the DGCL in connection with the Merger. Stockholders of
the Company who vote in favor of approving and adopting the Merger Agreement,
however, will thereby waive their appraisal rights. See "The Merger -- Appraisal
Rights."
 
     The affirmative vote of the holders of a majority of the outstanding shares
of Common Stock is required to approve and adopt the Merger Agreement.
Abstentions and broker non-votes will be counted as votes "AGAINST" the proposal
to approve and adopt the Merger Agreement.
 
     The Board is not aware of any matters other than those set forth in the
Notice of Special Meeting of Stockholders transmitted with this Proxy Statement
that may be brought before the Special Meeting, and under the Company's By-Laws
only business within the purposes described in such Notice may be transacted at
the Special Meeting. If any other procedural matters properly come before the
Special Meeting, the persons named in the accompanying Proxy Card will vote the
shares represented by all properly executed proxies on such matters in such
manner as shall be determined by a majority of the Board.
 
                                       10
<PAGE>   17
 
PROXIES; REVOCATION OF PROXIES
 
     All shares of Common Stock which are represented at the Special Meeting by
properly executed proxies received and not duly and timely revoked will be voted
at the Special Meeting in accordance with the instructions contained therein. In
the absence of contrary instructions, such shares will be voted "FOR" the
approval and adoption of the Merger Agreement.
 
     The required vote of the stockholders on the Merger Agreement is based upon
the total number of outstanding shares of Common Stock as of the Record Date.
Therefore, the failure to submit a Proxy Card (or to vote in person at the
Special Meeting), the abstention from voting by a stockholder and broker
non-votes will have the same effect as a vote "AGAINST" the approval and
adoption of the Merger Agreement.
 
     A proxy may be revoked prior to its being voted by: (i) delivering to the
Secretary of the Company, at or before the Special Meeting, a written instrument
bearing a later date than the proxy which instrument, by its terms, revokes the
proxy, (ii) duly executing a subsequent proxy relating to the same shares and
delivering it to the Secretary of the Company at or before the Special Meeting
or (iii) attending the Special Meeting and giving notice of revocation to the
Secretary of the Company or in open meeting prior to the proxy being voted
(although attendance at the Special Meeting without taking other affirmative
action as aforementioned will not constitute a revocation of a proxy). Any
written instrument revoking a proxy should be sent to: Rexene Corporation, 5005
LBJ Freeway, Dallas, Texas 75244, Attention: Secretary.
 
     If a quorum is not obtained, or if fewer shares of Common Stock than the
number required therefor are voted in favor of approval and adoption of the
Merger Agreement, it is expected that the Special Meeting will be postponed or
adjourned in order to permit additional time for soliciting and obtaining
additional proxies or votes, and, at any subsequent reconvening of the Special
Meeting, all proxies will be voted in the same manner as such proxies would have
been voted at the original convening of the Special Meeting, except for any
proxies which have theretofore effectively been revoked or withdrawn. In the
absence of a quorum, the Special Meeting may be adjourned from time to time by
the holders of a majority of the shares represented at the Special Meeting in
person or by proxy.
 
     The obligations of the Company and Huntsman to consummate the Merger are
subject to, among other things, the condition that the stockholders of the
Company, by the requisite vote thereof, approve and adopt the Merger Agreement.
See "The Merger Agreement -- Conditions to the Merger."
 
     STOCKHOLDERS SHOULD NOT FORWARD ANY CERTIFICATES REPRESENTING COMMON STOCK
WITH THEIR PROXY CARDS. IN THE EVENT THE MERGER IS CONSUMMATED, CERTIFICATES
SHOULD BE DELIVERED IN ACCORDANCE WITH INSTRUCTIONS SET FORTH IN A LETTER OF
TRANSMITTAL WHICH WILL BE SENT TO STOCKHOLDERS PROMPTLY AFTER THE EFFECTIVE
TIME. SEE "THE MERGER AGREEMENT -- THE MERGER -- EXCHANGE OF CERTIFICATES."
 
SOLICITATION OF PROXIES
 
   
     The Company will bear the costs of soliciting proxies in the accompanying
form from stockholders. In addition to soliciting proxies by mail, directors,
officers and employees of the Company, without receiving additional compensation
therefor, may solicit proxies by telephone, by telegram, or in person. In
addition, the Company has retained D.F. King & Co. at an estimated cost of
$10,000, plus reimbursement of expenses, to assist the Company in the
solicitation of proxies from brokerage firms and other custodians, nominees and
fiduciaries. Arrangements also will be made with brokerage firms and other
custodians, nominees and fiduciaries to forward solicitation materials to the
beneficial owners of shares of Common Stock held of record by such persons, and
the Company will reimburse such brokerage firms, custodians, nominees and
fiduciaries for reasonable out-of-pocket expenses incurred by them in connection
therewith.
    
 
                                       11
<PAGE>   18
 
                                   THE MERGER
 
BACKGROUND OF THE MERGER
 
   
     On July 17, 1996, Jon M. Huntsman, Chairman and Chief Executive Officer of
Huntsman, telephoned Ilan Kaufthal, a member of the Board and a managing
director of Schroders, one of the Company's financial advisors, to inform Mr.
Kaufthal that Huntsman intended to make a proposal to acquire all of the
outstanding shares of Common Stock. Later on July 17, 1996, Mr. Huntsman sent
Andrew J. Smith, Chairman and Chief Executive Officer of the Company, a letter
containing a proposal to acquire the outstanding shares of Common Stock at $14
per share in a merger transaction, subject to a due diligence review of the
Company's operations. This offer was publicly disclosed by Huntsman on July 19,
1996.
    
 
     The Board, together with its legal and financial advisors, met to review
the Huntsman proposal and determine an appropriate response. After carefully
considering a wide range of factors, the Board determined that stockholders of
the Company would be better served by the Company continuing to execute its
long-term business plans and strategies. On July 22, 1996, Mr. Smith sent a
letter to Mr. Huntsman and the Company issued a press release indicating that
the Board had rejected Huntsman's offer and explaining the Board's reasoning. On
July 25, 1996, Mr. Smith also sent a letter to the stockholders of the Company
explaining the Board's reasons for rejecting Huntsman's proposal.
 
   
     On August 1, 1996, Mr. Huntsman had several telephone conversations with
Mr. Smith and, later in the day, delivered another letter in which Huntsman
proposed to acquire all of the outstanding shares of Common Stock for $15 per
share in a merger transaction not subject to a due diligence review or
financing. This revised offer was publicly disclosed by Huntsman on the same
date. On August 2, 1996, the Rexene directors met with the Company's financial
and legal advisors to review Mr. Huntsman's revised proposal. At that meeting,
the Board determined that the revised proposal was not in the best interests of
the Company and its stockholders and also determined that it would be beneficial
and appropriate to explore whether any person or group, in addition to Huntsman,
might be interested in engaging in a mutually beneficial business combination or
other appropriate transaction with the Company. Accordingly, at that meeting the
Board directed management, with the assistance of Schroders, to develop a list
of companies that would likely have an interest in the Company. The Board's
determination at the August 2 meeting was communicated to Huntsman in a letter
from Mr. Smith, dated August 5, 1996, and publicly disclosed in a press release
issued by the Company. On August 5, Huntsman issued a press release and
indicated that it would continue to consider its options with respect to the
Company.
    
 
     During the first two weeks of August 1996, six investment firms and
companies were contacted by the Company, three of which subsequently executed
confidentiality/standstill agreements with the Company for the purpose of
conducting a due diligence review.
 
     On August 20, 1996, Huntsman issued a press release announcing that it
would no longer pursue its proposal to acquire the Company.
 
     During August, September and October 1996, the Company and its
representatives met with the companies that had executed
confidentiality/standstill agreements with the Company. The Company urged these
firms to complete their due diligence review of the Company and, if they
remained interested in a transaction at that time, to submit their best proposal
for consideration by the Board.
 
     At Mr. Huntsman's request, Messrs. Smith and Kaufthal also traveled to Salt
Lake City to meet with Mr. Huntsman on September 16, 1996. At that meeting, Mr.
Huntsman indicated that he would not make an offer for the Company that was not
supported by the Board, but that he was still interested in acquiring the
Company. Mr. Huntsman asked that Mr. Smith present to him some ideas about
combining parts of Huntsman's businesses with the Company's businesses. Mr.
Smith indicated that he would report that request to the Rexene directors, and
if they concurred, he would meet again with Mr. Huntsman some time in mid to
late October. The Board, at a meeting held on September 26, 1996, directed Mr.
Smith to meet again with Mr. Huntsman.
 
                                       12
<PAGE>   19
 
     On October 15, 1996, Mr. Guy P. Wyser-Pratte, Wyser-Pratte & Co., Inc. and
Spear, Leeds & Kellogg (collectively, the "Wyser-Pratte Group") filed a joint
Schedule 13D (the "Schedule 13D") with the Commission relating to the Common
Stock. In the Schedule 13D, the members of the Wyser-Pratte Group disclosed that
they beneficially owned 1,393,300 shares or approximately 7.41% of the
outstanding Common Stock and reported that they intended to take certain
actions, including calling a special meeting of stockholders of the Company in
order to remove all or a majority of the current directors of the Company, amend
the Bylaws, if necessary, to clarify the right of stockholders to fill vacancies
on the Board and replace any directors who may have been removed with directors
nominated by the Wyser-Pratte Group. In addition, the Wyser-Pratte Group
disclosed that it intended to submit to the stockholders of the Company proposed
amendments to the Bylaws which would (i) require that the Board terminate
defensive measures against a fully financed cash offer after 90 days unless the
stockholders of the Company vote to support the Board's policy of opposition to
such offer and (ii) provide that the Company shall not be governed by Section
203 of the DGCL. (All of the above proposals are sometimes hereinafter
collectively referred to as the "Wyser-Pratte Proposals".)
 
   
     On October 17, 1996, Mr. Smith and representatives of Schroders met with
Mr. Huntsman and another representative of Huntsman as a follow-up to the
September 16, 1996 meeting. Following the meeting, Mr. Smith asked the Company's
general counsel to furnish to Huntsman a form of confidentiality/standstill
agreement for execution so that the Company could provide Huntsman and its
representatives with non-public information in the context of a due diligence
review by Huntsman of the Company. On October 25, 1996, the Company's general
counsel sent such a form of confidentiality/standstill agreement to Huntsman.
    
 
     On October 28, 1996, the Wyser-Pratte Group filed its Amendment No. 1 to
the Schedule 13D in which it reported an increase in its holdings of shares of
Common Stock to 1,841,200 or approximately 9.79% of the outstanding shares of
Common Stock.
 
     On October 29, 1996, Mr. Huntsman sent the Board a letter in which he
indicated that in his view the terms of the draft confidentiality/standstill
agreement forwarded by the Company were unacceptably restrictive but
nevertheless proposed that Huntsman acquire all of the outstanding shares of
Common Stock at $16.00 per share. Later that same day, Mr. Smith telephoned Mr.
Huntsman to request further details concerning Huntsman's proposal and a draft
merger agreement for review by the Board and the Company's counsel.
 
     On November 1, 1996, Huntsman's counsel delivered a draft merger agreement
to counsel for the Company.
 
     On November 4, 1996, the Board met to consider Huntsman's latest proposal,
including the terms of Huntsman's draft merger agreement. The Company's
directors determined that Huntsman's proposal was unacceptable for a number of
reasons. Mr. Smith telephoned Mr. Huntsman to explain the Board's reasoning and
the Company's counsel sent a memorandum and a mark-up of the draft merger
agreement to Huntsman's counsel describing the changes requested by the Board.
 
     On November 8, 1996, Huntsman's counsel contacted the Company's counsel and
indicated that they would like to meet to discuss the draft merger agreement.
Huntsman's and the Company's counsel met later that day and discussed their
respective views concerning the draft merger agreement and the Huntsman
proposal.
 
     On November 12, 1996, Mr. Huntsman sent Mr. Smith a letter in which Mr.
Huntsman expressed disappointment with the Company's response to his proposal
and with the Board's unwillingness to accept Huntsman's proposal as previously
communicated by him. On November 15, 1996, Mr. Smith sent a letter to Mr.
Huntsman responding to Mr. Huntsman's letter and summarizing the Board's
concerns regarding Huntsman's proposal. Also on November 15, Mr. Huntsman
responded to Mr. Smith with a telefaxed letter disagreeing with Mr. Smith's
position with respect to the Huntsman proposal.
 
     During October and November 1996, the Company was advised by the various
parties who had executed confidentiality/standstill agreements with the Company
that no parties were interested in making a firm proposal to acquire all of the
outstanding shares of Common Stock. From time to time thereafter, the
 
                                       13
<PAGE>   20
 
Company held discussions with certain of such parties concerning a possible
transaction with the Company, but no such party made any proposal relating to an
acquisition of the Company.
 
     On December 4, 1996, Huntsman issued a press release in which Mr. Huntsman
confirmed that his company had made in late October an offer to acquire the
Company for $16.00 per share of Common Stock. Despite the fact that negotiations
on a merger agreement were no longer underway, Mr. Huntsman commented on the
extraordinary synergies which he believed would result from a combination with
Rexene.
 
     On December 23, 1996, the Board met again and confirmed its position that
it would not oppose a fully-financed cash offer to acquire all of the
outstanding Common Stock on customary terms at $16.00 per share, as long as the
offer was capable of being consummated through a tender offer or otherwise
within 60 days. If such an offer were made, the Board determined that it would
take all actions necessary to make the Company's stockholder rights plan (the
so-called "poison pill") inapplicable to such an offer.
 
     From late 1996 through January 1997, the Company and the Wyser-Pratte Group
issued various press releases and sent various materials to the Company's
stockholders concerning their respective views of the advisability of the
Wyser-Pratte Proposals.
 
     On January 22, 1997, the Wyser-Pratte Group filed its definitive
Solicitation Statement with the Commission and began to mail the Wyser-Pratte
Solicitation Statement to stockholders of the Company soliciting Appointments of
Designated Agents to call a special meeting of the Company's stockholders. In
such Solicitation Statement, the Wyser-Pratte Group indicated that, should it be
successful in causing the calling of a special meeting, it would put the
Wyser-Pratte Proposals to a vote of the Company's stockholders at such special
meeting.
 
     On or about January 27, 1997, the Company mailed to stockholders a
definitive Revocation Solicitation Statement soliciting revocations of
Appointments of Designated Agents in opposition to the solicitation by the
Wyser-Pratte Group.
 
     On February 7, 1997, Huntsman issued a press release indicating that
Huntsman continued to be interested in acquiring the Company because it believed
that the Company would be an excellent strategic fit with Huntsman's businesses.
 
     On February 14, 1997, the Wyser-Pratte Group delivered to the Company
executed and unrevoked Appointments of Designated Agents from the holders of the
requisite number of shares of Common Stock required pursuant to the Company's
Restated Certificate of Incorporation to call a special meeting of stockholders
and then sought to have the special meeting called for Wednesday, April 30,
1997. On February 27, 1997, the Board fixed April 30, 1997 as the date of the
special meeting, with April 18, 1997 as the record date for such special meeting
of stockholders.
 
     Following the publication in late 1996 and early 1997 of the Board's
position relating to bona fide proposals to acquire the Company at $16.00 per
share, the Company was contacted by four parties that previously had not held
discussions with the Company and who expressed an interest in exploring a
possible transaction with the Company. Two of such parties executed a
confidentiality/standstill agreement with the Company for the purpose of
conducting a due diligence review of the Company. None of such parties
subsequently made a proposal to acquire all of the outstanding shares of Common
Stock.
 
     On March 11, 1997, the Wyser-Pratte Group filed its Amendment No. 2 to the
Schedule 13D in which it reported an increase in its holdings of shares of
Common Stock to 2,483,800 shares or approximately 13.21% of the outstanding
shares of Common Stock.
 
     In a published statement issued on March 17, 1997, Huntsman reaffirmed its
interest in acquiring the Company at $16.00 per share in cash.
 
     On March 19, 1997, the Board met and further considered alternatives to
maximize the value of the Common Stock. At the meeting, the Board determined
that a stock repurchase program would serve the best interests of the Company
and its stockholders and would be responsive to the desires of many of the
Company's stockholders as expressed to management of the Company at meetings
held in connection with the
 
                                       14
<PAGE>   21
 
Company's solicitation of revocations of the Appointments of Designated Agents
solicited by the Wyser-Pratte Group. Accordingly, at the meeting the Rexene
directors authorized the repurchase by the Company of up to $85 million of
Common Stock (the "Stock Repurchase Program"), to be implemented in two parts.
The first part of the Stock Repurchase Program, which was to commence as soon as
practicable, was to consist of open market repurchases funded by $35 million in
borrowings under the Company's existing bank loan facility. The second $50
million part of the Stock Repurchase Program, which was to be effected by open
market or privately negotiated transactions, tender offer or otherwise as
determined by the Board, was to be submitted to the Company's stockholders for
their consideration and approval at the Special Meeting. The Board determined
that the Stock Repurchase Program would serve the best interests of Rexene's
stockholders by affording to those stockholders who desired liquidity an
opportunity to sell all or a portion of their shares of Common Stock.
 
   
     At the March 19, 1997 Board meeting, the Rexene directors also increased
the size of the Board and elected Stephen C. Swid and Richard C. Perry to the
Board, effective at the close of the meeting. Entities affiliated with these new
independent directors own in the aggregate 692,450 shares of Common Stock, or
approximately 4.1% of the outstanding shares. See "Security Ownership of Certain
Beneficial Owners and Management -- Security Ownership of Management."
    
 
     At the March 19, 1997 meeting, the Rexene directors also authorized the
following public announcement made by the Company later that day: "Separately,
in response to recent comments from Jon Huntsman, Rexene reiterated that its
Board of Directors would not oppose an all-cash, fully-financed offer to
purchase the Company for $16.00 per share from Mr. Huntsman or any other party."
As publicly stated on March 19, the Rexene directors would not oppose any
fully-financed offer to acquire the Company at $16.00 per share, regardless of
whether such offer provided for a tender offer or a long-form merger transaction
or would or would not be consummated within 60 days. If an offeror declined to
proceed by tender offer and instead conditioned its offer on the execution of a
merger agreement, the Rexene directors would authorize management to execute
such a merger agreement, provided it contained customary terms and conditions.
 
     On March 19, 1997, following the Board meeting, Arthur L. Goeschel resigned
as a director of the Company, citing his disagreement with the Board's decision
to engage in the Stock Repurchase Program.
 
     Following the March 19, 1997 Board meeting, the Company commenced open
market repurchases of the Common Stock pursuant to the first part of the Stock
Repurchase Program. The open market repurchases were conducted pursuant to Rule
10b-18 promulgated under the Exchange Act, and, in order to give all
stockholders the opportunity to participate, it was determined that repurchases
of shares would not be solicited and such shares would only be repurchased at or
below the published bid price. Due to the low number of shares of Common Stock
available for repurchase by the Company in accordance with the foregoing
parameters in the open market (only 11,500 shares were purchased), the Company
was unable to repurchase a significant number of shares of Common Stock
following the commencement of repurchases.
 
     At a meeting on March 27, 1997 the Board discussed the status of the first
part of the Stock Repurchase Program with its advisors. At the March 27 meeting,
the Board authorized management to consider the advisability of a "Dutch
Auction" tender offer in lieu of open market repurchases. Following the March 27
meeting, the Company suspended further open market repurchases pending a final
decision with respect to the tender offer.
 
     On April 3, 1997, the Board authorized the making of a "Dutch Auction"
tender offer by the Company to purchase up to 2,156,250 shares of the Common
Stock, or approximately 11.5% of the outstanding shares of Common Stock (the
"Offer"). Under the terms of the Offer, the Company invited stockholders to
tender shares of Common Stock at prices between $14 and $16 per share. Based
upon the number of shares tendered and the prices specified by the tendering
stockholders, the Company was to determine the single per share price within
that price range that would allow the Company to repurchase 2,156,250 shares or
such lesser number of shares as were properly tendered. Pursuant to the terms of
the Offer, the Company could purchase additional shares of Common Stock so long
as the price for the total shares purchased did not exceed $34.5 million. The
Offer was to expire on May 5, 1997, unless the Offer was extended. Consistent
with the Company's desire to make the Stock Repurchase Program available to all
stockholders, the Offer, in
 
                                       15
<PAGE>   22
 
accordance with the requirements of the Exchange Act, did not discriminate among
stockholders and was open to all stockholders who desired to sell their shares
pursuant to the terms of the Offer (except that pursuant to the terms of the
Offer and applicable rules odd lot holders were not subject to proration). The
Company expected to fund the offer from the Company's existing long term credit
facilities. The Company publicly announced the Offer on April 3, 1997 and
commenced the Offer on April 4, 1997. On April 4, 1997 the Company filed with
the Commission its Issuer Tender Offer Statement on Schedule 13E-4.
 
     On April 4, 1997, the Wyser-Pratte Group filed with the Commission and
commenced mailing to the Company's stockholders its definitive proxy statement
with respect to the solicitation of proxies for use at the special meeting
scheduled for April 30, 1997.
 
     On or about April 9, 1997, the Company filed with the Commission and
commenced mailing to the Company's stockholders its definitive proxy statement
with respect to the solicitation of proxies for use at the April 30 special
meeting.
 
     On April 10, 1997, Huntsman issued a press release in which, among other
things, it reiterated its continued interest in acquiring the Company at $16.00
per share.
 
     On April 18, 1997, Mr. Huntsman telephoned Mr. Kaufthal to reiterate the
interest of Huntsman in acquiring the Company. However, Mr. Huntsman indicated
that Huntsman would need to complete a due diligence review of the Company prior
to proceeding with its proposal. Mr. Kaufthal reported his telephone
conversation with Mr. Huntsman to Mr. Smith and the other Rexene directors, who
determined that Huntsman and its representatives should be given access to the
Company for purposes of a due diligence review, provided Huntsman agreed to an
acceptable confidentiality/standstill agreement.
 
     On April 22, 1997, Mr. Smith sent a letter to Mr. Huntsman enclosing a form
of confidentiality/standstill agreement and offering to grant Huntsman access to
review certain non-public information concerning the Company upon execution
thereof. On April 24, 1997, a Huntsman representative sent Mr. Smith a letter
again proposing to acquire Rexene for $16.00 per share in an all cash merger
transaction. Such letter also indicated that Huntsman was prepared to
immediately commence a due diligence review of Rexene and complete such review
within two weeks of its commencement. On April 25, in a letter to Mr. Huntsman,
Mr. Smith indicated that Huntsman would be permitted to conduct a due diligence
review of Rexene if a suitable confidentiality agreement could be negotiated
between the parties. After negotiating certain terms of such agreement, on April
26, 1997 the Company and Huntsman executed a confidentiality/standstill
agreement and Huntsman commenced its due diligence review of the Company.
 
     In a press release issued on April 28, the Company announced that it was
postponing the special meeting scheduled for April 30, 1997 until May 22, 1997
in order to allow adequate time for stockholders to evaluate the recent
developments regarding Huntsman's interest in the Company. On the same date, the
Company amended its Issuer Tender Offer Statement on Schedule 13E-4 in order to
extend the expiration date of the Offer to May 29, 1997.
 
     On May 14, 1997, Huntsman concluded its due diligence review of the Company
and determined to proceed with its proposal to acquire the Company. On May 14,
1997, Huntsman forwarded to the Company a draft of the Merger Agreement,
together with copies of commitment letters from commercial banks regarding the
financing of the Merger. On May 19, 1997, the Company announced that it was in
negotiations with Huntsman regarding the acquisition of the Company by Huntsman
for $16.00 per share in cash and that it was adjourning the special meeting of
stockholders scheduled for May 22 until June 12, 1997. Thereafter, on May 20,
representatives of the Company, Huntsman and their respective counsel began a
series of meetings to commence negotiation of the terms of the Merger Agreement.
 
     On May 28, 1997, the Company amended its Issuer Tender Offer Statement on
Schedule 13E-4 in order to extend the expiration date of the Offer from May 29,
1997 to June 19, 1997.
 
     On May 30, 1997, the Board met and was updated by the Company's management
and its financial and legal advisors on the status of the negotiations with
Huntsman. The Board also at that meeting received presentations from the
Company's chief financial officer and the Company's financial advisors regarding
their
 
                                       16
<PAGE>   23
 
respective views concerning the fairness, from a financial point of view, of
Huntsman's proposal to acquire the Common Stock for $16.00 per share in cash.
The Rexene directors also discussed the advisability of Huntsman's proposal and
whether consummation of a merger with Huntsman in accordance with the terms
under discussion would be in the stockholders' best interests.
 
     On May 30, 1997, the Executive Committee of the Board of Directors of
Huntsman unanimously approved the Merger Agreement by written consent in
accordance with applicable law and authorized the appropriate officers of
Huntsman to execute and deliver the Merger Agreement to the Company.
 
     On June 9, 1997, the Board met to consider the terms of the Merger
Agreement as negotiated between Huntsman and the Company. After thorough
discussion of all factors that it deemed relevant to its decision, including
those noted below under "-- The Company's Reasons for the Merger; Recommendation
of the Board of Directors," the Board voted on a resolution to approve the
Merger Agreement. All directors voted in favor of the approval of the Merger
Agreement except for Messrs. Swid and Knott, each of whom abstained from voting,
and for Mr. Hewitt, who did not attend the meeting. The Board authorized Mr.
Smith to execute and deliver the Merger Agreement on behalf of the Company and
resolved to recommend that the stockholders of the Company approve the Merger
Agreement at a special meeting to be held with respect thereto. The Board also
determined to postpone the special meeting of stockholders scheduled to be held
on June 12, 1997 and to terminate the Offer. The Company and Huntsman then
executed and delivered the Merger Agreement and jointly issued a press release
announcing the planned Merger.
 
THE COMPANY'S REASONS FOR THE MERGER; RECOMMENDATION OF THE BOARD OF DIRECTORS
 
     The Board has determined that the Merger Agreement and the Merger are fair
to and in the best interests of the Company and its stockholders and has
approved and adopted the Merger Agreement. Accordingly, the Board recommends
that stockholders vote "FOR" approval and adoption of the Merger Agreement.
 
     In reaching its determination that the Merger Agreement and the Merger are
fair to and in the best interests of the Company and its stockholders, the Board
considered a number of factors, including, without limitation, the following:
 
          (i) The premium of the Merger Consideration to the historical market
     prices for the Common Stock, including the fact that the Merger
     Consideration represents a premium in excess of 75% over the $9 1/8 per
     share closing sales price of the Common Stock on July 18, 1996, the trading
     day preceding the date on which Huntsman's interest in acquiring the
     Company was first publicly disclosed. See "Market Prices of Common Stock."
 
          (ii) The Company's discussions with other parties who were believed to
     be most likely to have an interest in acquiring the Company and the lack of
     any proposals from any other third party to acquire the Company.
 
          (iii) The Board's prior public statements that it would not oppose a
     fully financed cash offer to acquire the Company at $16.00 per share of
     Common Stock.
 
          (iv) The desire of certain stockholders of the Company, as expressed
     to management in connection with the Company's discussions with
     stockholders regarding the Wyser-Pratte Proposals and related matters, to
     sell the Company at a price of $16.00 per share in cash.
 
          (v) The provision by Huntsman to the Company of executed commitment
     letters from existing Huntsman lenders, who have committed to provide 100%
     of the funds necessary to effect the Merger, the Board's views regarding
     the likelihood that Huntsman would be able to complete the Merger on a
     timely basis and the fact that the Merger Agreement provides for limited
     conditions (and no financing condition) to the obligations of Huntsman to
     consummate the Merger and a substantial termination fee to be paid by
     Huntsman to the Company if the Merger does not close (except in certain
     limited circumstances as a result of a breach by the Company of the terms
     of the Merger Agreement or a material deterioration in the Company's
     financial condition). See "The Merger Agreement -- Conditions to the
     Merger" and "-- Fees and Expenses."
 
                                       17
<PAGE>   24
 
   
          (vi) The written opinions of Schroders and Smith Barney to the effect
     that, as of the date of such opinions and based upon and subject to certain
     matters stated therein, the Merger Consideration was fair, from a financial
     point of view, to the holders of Common Stock. See "-- Opinions of the
     Company's Financial Advisors."
    
 
          (vii) The current and prospective environment in which the Company
     operates, including economic conditions and the competitive environment for
     petrochemicals and polymers businesses generally.
 
          (viii) The Board's view that the terms of the Merger Agreement, as
     reviewed by the Board with its legal and financial advisors, are advisable
     and fair to the Company and its stockholders and provide the Company and
     its stockholders with the flexibility to, under certain circumstances,
     accept a Superior Proposal (as defined herein) and terminate the Merger
     Agreement upon the payment of a termination fee to Huntsman. See "The
     Merger Agreement -- Certain Covenants -- No Solicitation" and "-- Fees and
     Expenses."
 
          (ix) The Board's knowledge of the business, operations, properties,
     assets, financial condition and operating results of the Company.
 
     The foregoing discussion of the information and factors discussed by the
Board is not meant to be exhaustive but includes all material factors considered
by the Board. The Board did not quantify or attach any particular weight to the
various factors that it considered in reaching its determination that the Merger
Agreement and the Merger are fair to and in the best interests of the Company
and its stockholders. As a result of its consideration of the foregoing and
other relevant considerations, the Board determined that the Merger Agreement
and the Merger are fair to and in the best interests of the Company and its
stockholders and approved and adopted the Merger Agreement. ACCORDINGLY, THE
BOARD RECOMMENDS THAT STOCKHOLDERS VOTE "FOR" APPROVAL AND ADOPTION OF THE
MERGER AGREEMENT.
 
     The Company has been informed by Sub that the purpose of the Merger is to
enable Huntsman to acquire the entire equity interest in the Company. Following
the Merger, it is expected that the Company's businesses and operations will be
integrated with the businesses and operations of Huntsman and its affiliates.
 
OPINIONS OF THE COMPANY'S FINANCIAL ADVISORS
 
   
  Opinion of Schroders
    
 
   
     Schroders was retained by the Company to act as a financial advisor to the
Company in connection with the proposed Merger. In connection with such
engagement, the Company requested that Schroders advise the Board with respect
to the fairness, from a financial point of view, to the holders of Common Stock
of the consideration to be received by such holders in the Merger. On May 30,
1997, at a meeting of the Board held to evaluate the proposed Merger, Schroders
reviewed with the Board the financial analyses performed by Schroders in
connection with such advice and, on June 3, 1997, Schroders provided an updated
set of such analyses to the members of the Board. On June 9, 1997, the date of
execution of the Merger Agreement, Schroders delivered to the Board an oral
opinion (which opinion was subsequently confirmed by delivery of a written
opinion, dated June 9, 1997) to the effect that, as of the date of such opinion
and based upon and subject to certain matters stated therein, the Merger
Consideration was fair, from a financial point of view, to the holders of Common
Stock.
    
 
   
     In arriving at its opinion, Schroders, among other things: reviewed the
Merger Agreement; reviewed the Company's Annual Reports on Form 10-K filed with
the Commission for the fiscal years ended December 31, 1993, 1994, 1995 and
1996, and Quarterly Report on Form 10-Q for the quarter ended March 31, 1997,
including the audited consolidated and unaudited condensed consolidated
financial statements of the Company included therein; reviewed certain internal
financial forecasts and projections for the Company prepared or supplied by the
Company's management recently and over the past several years; held discussions
with the Company's management regarding the business, operations and prospects
of the Company; and performed various financial analyses, as Schroders deemed
appropriate, of the Company using generally
    
 
                                       18
<PAGE>   25
 
   
accepted analytical methodologies, including: (i) the application to the
financial results of the Company of the public trading multiples of companies
which Schroders deemed comparable; (ii) the application to the financial results
of the Company of the multiples reflected in recent mergers and acquisitions for
businesses which Schroders deemed comparable; (iii) discounted cash flow
analyses of the Company's operations; (iv) leveraged buyout analyses of the
Company's operations; and (v) leveraged recapitalization analyses of the
Company's operations. Schroders also reviewed the historical trading prices and
volumes of the Common Stock, and performed such other financial studies,
analyses, inquiries and investigations as Schroders deemed appropriate. In
addition, Schroders took into account the manner in which the financial terms of
the Merger were negotiated between the Company and Huntsman, as well as the
results of the extended solicitations of interest by the Company from persons
thought likely to have a possible interest in acquiring the Company.
    
 
   
     In its review and analysis and in formulating its opinion, Schroders
assumed and relied upon the accuracy and completeness of all information
supplied or otherwise made available to it by the Company or obtained by
Schroders from other sources, and upon the assurance of the Company's management
that they were not aware of any information or facts that would make the
information provided to Schroders incomplete or misleading. Schroders did not
attempt to independently verify any of such information. Schroders did not
undertake an independent appraisal of the assets or liabilities (contingent or
otherwise) of the Company, nor was Schroders furnished with any such appraisals.
With respect to financial forecasts and projections for the Company, Schroders
was advised by the Company, and assumed, without independent investigation, that
they had been reasonably prepared and reflected Company management's most
currently available estimates and judgments as to the expected future financial
performance of the Company. Schroders noted that its opinion was necessarily
based upon financial, economic, market and other conditions as they existed and
could be evaluated by Schroders on the date of its opinion. Although Schroders
evaluated the Merger Consideration from a financial point of view, Schroders was
not asked to and did not recommend the specific consideration payable in the
Merger, which was determined through negotiation between the Company and
Huntsman.
    
 
   
     THE FULL TEXT OF THE WRITTEN OPINION OF SCHRODERS, DATED JUNE 9, 1997,
WHICH SETS FORTH THE ASSUMPTIONS MADE, MATTERS CONSIDERED AND LIMITATIONS ON THE
REVIEW UNDERTAKEN, IS ATTACHED HERETO AS ANNEX B AND IS INCORPORATED HEREIN BY
REFERENCE. HOLDERS OF COMMON STOCK ARE URGED TO READ THIS OPINION CAREFULLY IN
ITS ENTIRETY. THE OPINION OF SCHRODERS IS DIRECTED TO THE BOARD AND RELATES ONLY
TO THE FAIRNESS OF THE MERGER CONSIDERATION FROM A FINANCIAL POINT OF VIEW, DOES
NOT ADDRESS ANY OTHER ASPECT OF THE MERGER OR THE MERGER AGREEMENT AND DOES NOT
CONSTITUTE A RECOMMENDATION TO ANY STOCKHOLDER AS TO HOW SUCH STOCKHOLDER SHOULD
VOTE AT THE SPECIAL MEETING. THE SUMMARY OF THE OPINION OF SCHRODERS SET FORTH
IN THIS PROXY STATEMENT IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE FULL
TEXT OF SUCH OPINION.
    
 
   
     In preparing its opinion, Schroders performed a variety of financial and
comparative analyses, including those described below. The summary of such
analyses does not purport to be a complete description of the analyses
underlying Schroders' opinion. The preparation of a fairness opinion is a
complex analytic process involving various determinations as to the most
appropriate and relevant methods of financial analyses and the application of
those methods to the particular circumstances and, therefore, such an opinion is
not readily susceptible to summary description. Furthermore, in arriving at its
opinion, Schroders did not attribute any particular weight to any analysis or
factor considered by it, but rather made qualitative judgements as to the
significance and relevance of each analysis and factor. Accordingly, Schroders
believes that its analyses must be considered as a whole and that selecting
portions of its analyses and factors, without considering all analyses and
factors, could create a misleading or incomplete view of the processes
underlying such analyses and opinion. In its analyses, Schroders made numerous
assumptions with respect to the Company, industry performance, general business,
economic, market and financial conditions and other matters, many of which are
beyond the control of the Company. The estimates contained in such analyses and
the valuation ranges resulting from any particular analysis are not necessarily
indicative of actual values or predictive of future results or values, which may
be significantly more or less favorable than those suggested by such analyses.
In addition, analyses relating to the value of businesses or securities do not
purport to be appraisals or to reflect the prices at which businesses or
securities actually may be sold. Accordingly, such analyses and estimates are
inherently subject to substantial uncertainty. Schroders' opinion and analyses
were only one of many factors considered by the Board in its evaluation of the
Merger and should not be viewed as determinative of the views
    
 
                                       19
<PAGE>   26
 
of the Board or management of the Company with respect to the Merger
Consideration or the proposed Merger.
 
   
     The following is a summary of certain analysis performed by Schroders in
connection with its opinion.
    
 
   
     Analysis of Comparable Publicly Traded Companies. Using publicly available
information, Schroders compared selected historical and projected financial and
operating data, and selected stock market data of the Company to the
corresponding data of the following publicly traded chemical companies which
Schroders considered reasonably comparable to the Company (collectively, the
"Comparable Companies"): ARCO Chemical Company; The Dow Chemical Company;
Eastman Chemical Company; The Geon Company; Georgia Gulf Corporation; Lyondell
Petrochemical Company; Millennium Chemicals Inc.; and Union Carbide Corporation.
    
 
   
     Schroders performed a market analysis of the Company and the Comparable
Companies using closing market prices as of June 3, 1997. In connection with
such analysis, Schroders analyzed (i) the market value of each of the Comparable
Companies and the Company as multiples of earnings per share for the last twelve
months ("LTM") and calendar year 1997, (ii) the market value plus total debt
minus total cash ("Enterprise Value") of each of the Comparable Companies and
the Company as multiples of adjusted earnings before interest and taxes ("EBIT")
for the last twelve months, calendar year 1997, and average over fiscal years
1992 through 1996, and (iii) the Enterprise Value of each of the Comparable
Companies and the Company as multiples of adjusted earnings before interest,
taxes, depreciation and amortization ("EBITDA") for the last twelve months,
calendar year 1997, and average over fiscal years 1992 through 1996. Based on
this analysis, Schroders calculated an implied equity value for the Common Stock
of between $11.86 and $30.17 per share.
    
 
   
     Discounted Cash Flow Analysis. Schroders performed a discounted cash flow
analysis of the Company based on the financial forecasts of the Company for the
fiscal years 1997 to 2001 prepared and provided by the management of the Company
on May 15, 1997 (the "Company Financial Forecast"). A discounted cash flow
analysis is a traditional valuation methodology used to derive a valuation of a
corporate entity by calculating the estimated future free cash flows of such
corporate entity and discounting such cash flow results back to the present.
    
 
   
     In addition to performing a discounted cash flow analysis of the Company
Financial Forecast, Schroders performed another discounted cash flow analysis
which adjusted the Company Financial Forecast by assuming certain delays in the
implementation of certain key capital programs, a decrease in certain commodity
chemical product prices in 1999, a decrease in production of certain specialty
polymers, and a decrease in the assumed sales growth rate of the Company's film
division (the "Alternative Financial Forecast").
    
 
   
     In each of its discounted cash flow analyses, Schroders discounted the
stream of free cash flows back to May 31, 1997 at discount rates ranging from
11% to 17%. To estimate the terminal value of the Company at the end of the
Company's financial forecast period, Schroders applied terminal multiples
ranging from 6.0x to 7.0x to the Company's average EBITDA for the five years
ending in each of 2000 and 2001 (each terminal year constituting a separate
valuation analysis), and discounted such value estimates back to May 31, 1997 at
discount rates ranging from 11% to 17%. Schroders then summed the present values
of the free cash flows and the present values of the terminal values, subtracted
existing indebtedness and added existing cash and cash equivalents, to derive a
range of implied equity values. Based on the Company Financial Forecast, this
analysis implied a range of equity values of $16.11 to $32.29 per share. Based
on the Alternative Financial Forecast, this analysis implied a range of equity
values of $9.57 to $22.85 per share.
    
 
   
     Selected Merger and Acquisition Transaction Analyses. Schroders analyzed
certain publicly available information relating to numerous selected merger and
acquisition transactions in the chemical industry since 1994. Although these
transactions were reviewed for comparison purposes, none of such transactions
was considered directly comparable to the proposed Merger. Among the
transactions analyzed by Schroders were (target/acquiror): Texaco propylene
oxide and MTBE business/Huntsman Specialty Chemicals Corporation; QPF Inc./The
Hood Industries; ARCO Chemical Company plastics business/NOVA Corporation;
Uniroyal Chemical Corporation/Crompton & Knowles Corporation; Sterling
Chemicals, Inc./The Sterling Group, Inc. (the "Sterling Transaction"); Monsanto
ABS styrenics business/Bayer AG; Albemarle Corp. alphaolefins
    
 
                                       20
<PAGE>   27
 
business/Amoco Chemical Company; Mobil Corporation plastics division/Tenneco
Inc.; NOVA Corporation polypropylene business/Huntsman Polypropylene
Corporation; Occidental Chemical Company Alathon polyethylene business/Lyondell
Petrochemical Corporation; Occidental Chemical Company PVC business/Borden
Chemicals & Plastics; Eastman Chemical Company polypropylene business/Huntsman
Polypropylene Corporation; and DuPont Canada Sclair polyethylene business/NOVA
Corporation.
 
   
     In each of the selected transactions analyzed, Schroders computed the
equity cost (where applicable, the offer per share multiplied by total common
shares outstanding (the "Equity Cost")) and divided such amount by the acquired
company's LTM net income immediately prior to the acquisition, which resulted in
a range of purchase price multiples. Schroders also computed the adjusted price
(the Equity Cost plus latest reported total debt, capitalized leases, preferred
stock and minority interest minus total cash and cash equivalents, adjusted for
outstanding options (the "Adjusted Purchase Price")) paid in each of the
selected transactions analyzed and divided such amount by the acquired company's
LTM EBITDA and EBIT as well as five year average EBITDA immediately prior to the
acquisition, which resulted in another range of purchase price multiples.
Schroders also illustrated such multiples separately for the Sterling
Transaction given its comparability relative to the other selected transactions.
Such analysis illustrated a range of acquisition multiples of LTM EBITDA of 3.9x
(Sterling Transaction) to 7.9x; a range of acquisition multiples of LTM EBIT of
5.1x (Sterling Transaction) to 12.3x; a range of acquisition multiples of LTM
net income of 6.7x (Sterling Transaction) to 19.4x; and a range of acquisition
multiples of five year average EBITDA of 6.6x to 7.2x (Sterling Transaction).
Based on this analysis, Schroders calculated an implied equity value of the
Common Stock of between $7.58 (Sterling Transaction) and $21.50 per share.
    
 
   
     Premium Analysis. Schroders analyzed the premium paid over the stock price
of acquired companies in selected merger transactions since 1992, based on stock
prices one day, one week and four weeks prior to the announcement of the
transaction. This analysis demonstrated that, on average, the acquired company
received a 33.0%, 38.1% and 44.0% premium over its stock price one day, one week
and four weeks, respectively, prior to announcement of a transaction. Schroders
then compared these results with the premiums implied by the proposed Merger
over the Company's stock price immediately preceding Huntsman's initial offer in
July 1996. The proposed Merger implied premiums of 75.3%, 60.0% and 56.1% over
the Company's share price one day, one week and four weeks, respectively, prior
to July 19, 1996.
    
 
   
     Other Analyses. Schroders analyzed the feasibility of a leveraged buyout of
the Company. This analysis implied that, based on current market conditions, a
leveraged buyout of the Company was marginally feasible at a price of $20 per
share based on the Company Financial Forecast and at a price of $14 per share
based on the Alternative Financial Forecast. Schroders also considered in this
analysis the consideration by several financial investors of a leveraged buyout
of the Company between July 1996 and the date of its opinion, none of whom
subsequently made a proposal to acquire all of the outstanding shares of Common
Stock.
    
 
   
     Schroders also analyzed the effect of a share repurchase of up to $85
million of the Common Stock at a share price of up to $16.00, as proposed by the
Company in March 1997. Such analysis illustrated that the Common Stock, pro
forma for such share repurchase, would need to trade at market multiples of
5.1x, 5.3x and 5.4x LTM EBITDA to yield a total equity value, comprised of the
cash received in the repurchase and the trading value of the shares that remain
outstanding, of $16, $17 and $18 per share, respectively. These multiples
compare to the Company's trading multiple of 4.9x LTM EBITDA as of June 3, 1997
and 4.2x LTM EBITDA assuming an "unaffected" price of $11 per share, adjusted
from the June 3, 1997 price to exclude existing takeover premium.
    
 
   
     Pursuant to the terms of Schroders' engagement by the Company, the Company
has agreed to pay Schroders for its services in connection with the Merger an
aggregate financial advisory fee equal to 1% of the total consideration payable
in connection with the Merger, a portion of which is contingent on consummation
of the Merger. The Company has also agreed to reimburse Schroders for reasonable
out-of-pocket expenses incurred by Schroders in performing its services,
including the reasonable fees and expenses of its outside legal counsel, and to
indemnify Schroders and related persons against certain liabilities relating to
or arising out of its engagement, including certain liabilities under the
federal securities laws.
    
 
                                       21
<PAGE>   28
 
   
     Schroders, as part of its investment banking business, is continually
engaged in the valuation of businesses and their securities in connection with
mergers and acquisitions, negotiated underwritings, secondary distributions of
listed and unlisted securities, private placements and valuations for estate,
corporate and other purposes. The Company selected Schroders as one of its
financial advisors because it is a nationally recognized investment banking firm
that has substantial experience in transactions similar to the Merger. Since
1991, Schroders has also worked with the Company on several corporate
transactions for which Schroders received fees. Mr. Kaufthal, Vice Chairman of
Schroders, has been a director of the Company since September 1992.
    
 
  Opinion of Smith Barney
 
     Smith Barney was retained by the Company to act as a financial advisor to
the Company in connection with the proposed Merger. In connection with such
engagement, the Company requested that Smith Barney evaluate the fairness, from
a financial point of view, to the holders of Common Stock of the consideration
to be received by such holders in the Merger. On May 30, 1997, at a meeting of
the Board held to evaluate the proposed Merger, Smith Barney reviewed with the
Board the financial analyses performed by Smith Barney in connection with its
evaluation of the Merger Consideration and, on June 9, 1997, the date of
execution of the Merger Agreement, delivered to the Board an oral opinion (which
opinion was subsequently confirmed by delivery of a written opinion, dated June
9, 1997) to the effect that, as of the date of such opinion and based upon and
subject to certain matters stated therein, the Merger Consideration was fair,
from a financial point of view, to the holders of Common Stock.
 
     In arriving at its opinion, Smith Barney reviewed the Merger Agreement and
held discussions with certain senior officers, directors and other
representatives and advisors of the Company and certain senior officers and
other representatives of Huntsman concerning the business, operations and
prospects of the Company. Smith Barney examined certain publicly available
business and financial information relating to the Company as well as certain
financial forecasts and other information and data for the Company which were
provided to or otherwise discussed with Smith Barney by the management of the
Company. Smith Barney reviewed the financial terms of the Merger as set forth in
the Merger Agreement in relation to, among other things: current and historical
market prices and trading volumes of the Common Stock; the historical and
projected earnings and other operating data of the Company; and the
capitalization and financial condition of the Company. Smith Barney also
considered, to the extent publicly available, the financial terms of certain
other similar transactions recently effected which Smith Barney considered
relevant in evaluating the Merger and analyzed certain financial, stock market
and other publicly available information relating to the businesses of other
companies whose operations Smith Barney considered relevant in evaluating those
of the Company. In connection with its engagement, Smith Barney was requested to
approach, and held discussions with, third parties to solicit indications of
interest in a possible acquisition of the Company. In addition to the foregoing,
Smith Barney conducted such other analyses and examinations and considered such
other financial, economic and market criteria as Smith Barney deemed appropriate
in arriving at its opinion. Smith Barney noted that its opinion was necessarily
based upon information available, and financial, stock market and other
conditions and circumstances existing and disclosed, to Smith Barney as of the
date of its opinion.
 
     In rendering its opinion, Smith Barney assumed and relied upon, without
independent verification, the accuracy and completeness of all financial and
other information and data publicly available or furnished to or otherwise
reviewed by or discussed with Smith Barney. With respect to financial forecasts
and other information and data provided to or otherwise reviewed by or discussed
with Smith Barney, Smith Barney discussed with the management of the Company,
and relied with the consent of the Board on, various operational and financial
assumptions as to the future financial performance of the Company. Smith Barney
did not make and was not provided with an independent evaluation or appraisal of
the assets or liabilities (contingent or otherwise) of the Company nor did Smith
Barney make any physical inspection of the properties or assets of the Company.
Although Smith Barney evaluated the Merger Consideration from a financial point
of view, Smith Barney was not asked to and did not recommend the specific
consideration payable in the Merger, which was determined through negotiation
between the Company and Huntsman. No other limitations were imposed by the
Company on Smith Barney with respect to the investigations made or procedures
followed by Smith Barney in rendering its opinion.
 
                                       22
<PAGE>   29
 
     THE FULL TEXT OF THE WRITTEN OPINION OF SMITH BARNEY, DATED JUNE 9, 1997,
WHICH SETS FORTH THE ASSUMPTIONS MADE, MATTERS CONSIDERED AND LIMITATIONS ON THE
REVIEW UNDERTAKEN, IS ATTACHED HERETO AS ANNEX C AND IS INCORPORATED HEREIN BY
REFERENCE. HOLDERS OF COMMON STOCK ARE URGED TO READ THIS OPINION CAREFULLY IN
ITS ENTIRETY. THE OPINION OF SMITH BARNEY IS DIRECTED TO THE BOARD AND RELATES
ONLY TO THE FAIRNESS OF THE MERGER CONSIDERATION FROM A FINANCIAL POINT OF VIEW,
DOES NOT ADDRESS ANY OTHER ASPECT OF THE MERGER OR RELATED TRANSACTIONS AND DOES
NOT CONSTITUTE A RECOMMENDATION TO ANY STOCKHOLDER AS TO HOW SUCH STOCKHOLDER
SHOULD VOTE AT THE SPECIAL MEETING. THE SUMMARY OF THE OPINION OF SMITH BARNEY
SET FORTH IN THIS PROXY STATEMENT IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
THE FULL TEXT OF SUCH OPINION.
 
     In preparing its opinion, Smith Barney performed a variety of financial and
comparative analyses, including those described below. The summary of such
analyses does not purport to be a complete description of the analyses
underlying Smith Barney's opinion. The preparation of a fairness opinion is a
complex analytic process involving various determinations as to the most
appropriate and relevant methods of financial analysis and the application of
those methods to the particular circumstances and, therefore, such an opinion is
not readily susceptible to summary description. Accordingly, Smith Barney
believes that its analyses must be considered as a whole and that selecting
portions of its analyses and factors, without considering all analyses and
factors, could create a misleading or incomplete view of the processes
underlying such analyses and opinion. In its analyses, Smith Barney made
numerous assumptions with respect to the Company, industry performance, general
business, economic, market and financial conditions and other matters, many of
which are beyond the control of the Company. The estimates contained in such
analyses and the valuation ranges resulting from any particular analysis are not
necessarily indicative of actual values or predictive of future results or
values, which may be significantly more or less favorable than those suggested
by such analyses. In addition, analyses relating to the value of businesses or
securities do not purport to be appraisals or to reflect the prices at which
businesses or securities actually may be sold. Accordingly, such analyses and
estimates are inherently subject to substantial uncertainty. Smith Barney's
opinion and analyses were only one of many factors considered by the Board in
its evaluation of the Merger and should not be viewed as determinative of the
views of the Board or management of the Company with respect to the Merger
Consideration or the proposed Merger.
 
     Selected Company Analysis. Using publicly available information, Smith
Barney analyzed, among other things, the market values and trading multiples of
the Company and 27 selected publicly traded companies in the chemicals industry,
consisting of: (i) Commodity Chemicals Companies: Eastman Chemical Company; The
Geon Company; Georgia Gulf Corporation; Lyondell Petrochemical Company; Union
Carbide Corporation; and Wellman, Inc. (collectively, the "Commodity Chemicals
Companies"); (ii) Leveraged Commodity Chemicals Companies: General Chemical
Corporation; Millennium Chemicals Inc.; NL Industries, Inc.; Pioneer Companies,
Inc.; and Sterling Chemicals Holdings, Inc. (collectively, the "Leveraged
Commodity Chemicals Companies"); and (iii) Specialty Plastics Companies:
Atlantis Plastics, Inc.; Bemis Company, Inc.; BPI Packaging Technologies, Inc.;
Intertape Polymer Group, Inc.; Liqui-Box Corporation; Sealed Air Corporation;
SEDA Specialty Packaging Corp.; The West Company, Incorporated; AEP Industries
Inc.; Applied Extrusion Technologies, Inc.; Alltrista Corporation; ARTRA Group
Incorporated; AT Plastics Inc.; Blessings Corporation; CLARCOR Inc.; and
Tredegar Industries, Inc. (collectively, the "Specialty Plastics Companies").
With respect to the selected companies analyzed, Smith Barney focused primarily
on the following Commodity Chemicals Companies and Leveraged Commodity Chemicals
Companies, which Smith Barney considered to be most similar to the Company:
Eastman Chemical Company; The Geon Company; Georgia Gulf Corporation; Lyondell
Petrochemical Company; Union Carbide Corporation; and Millennium Chemicals Inc.
(collectively, the "Selected Companies"). Smith Barney compared market values as
multiples of, among other things, latest 12 months net income and estimated
calendar year 1997 net income, and adjusted market values (equity market value,
plus total debt, less cash and cash equivalents) as multiples of, among other
things, latest 12 months EBIT and EBITDA. Net income multiples for the Selected
Companies were based on estimates of selected investment banking firms and net
income multiples for the Company were based on internal estimates of the
management of the Company. All multiples were based on closing stock prices as
of May 27, 1997. Applying a range of selected multiples for the Selected
Companies of latest 12 months net income, estimated calendar year 1997 net
income and latest 12 months EBIT and EBITDA of 12.0x to 23.6x, 10.5x to 13.1x,
10.0x to 14.8x and 6.6x to 8.4x, respectively, to corresponding financial data
for
 
                                       23
<PAGE>   30
 
the Company resulted in an equity reference range for the Company of
approximately $14.70 to $24.04 per share, as compared to the Merger
Consideration of $16.00 per share.
 
     Selected Merger and Acquisition Transactions Analysis. Using publicly
available information, Smith Barney analyzed the purchase price and implied
transaction value multiples paid or proposed to be paid in 13 selected
transactions in the chemicals industry (acquiror/target), consisting of: (i)
transactions involving selected commodity chemicals companies: PetroFina
S.A./Fina, Inc.; Agrium Inc./Viridian Inc.; Potash Corporation of Saskatchewan
Inc./ Arcadian Corporation; The Unicorn Group, L.L.C. and The Sterling Group,
Inc./Sterling Chemicals, Inc.; Investor Group/Texas Petrochemicals Corporation;
Crompton & Knowles Corporation/Uniroyal Chemical Corporation; and Amoco Chemical
Company/Albemarle Corp. (Alphaolefins) (collectively, the "Commodity Chemicals
Transactions"); and (ii) transactions involving selected specialty plastic
companies: Tenneco Packaging Inc./Amoco Foam Products Company; AEP Industries
Inc./Borden, Inc.-Worldwide Plastics; Southcorp/Park-Ohio Industries,Inc. (Rigid
Plastics-Bennet Industries); Schuller Corporation/NRG Barriers Inc.; Tyco
International Ltd./Carlisle Plastics, Inc.; and Tenneco Inc./Mobil Corporation
(plastics) (collectively, the "Plastics Companies Transactions"). With respect
to the selected transactions analyzed, Smith Barney focused primarily on the
following transactions, which Smith Barney considered to be most similar to the
Merger: PetroFina S.A./Fina, Inc.; The Unicorn Group, L.L.C. and The Sterling
Group, Inc./Sterling Chemicals, Inc.; Investor Group/Texas Petrochemicals
Corporation; Crompton & Knowles Corporation/Uniroyal Chemical Corporation; and
Amoco Chemical Company/Albemarle Corp. (collectively, the "Selected
Transactions"). Smith Barney compared, among other things, implied transaction
values as multiples of latest 12 months EBIT and EBITDA. All multiples for the
Selected Transactions were based on information available at the time of
announcement of the transaction. Applying a range of selected multiples for the
Selected Transactions of latest 12 months EBIT and EBITDA of 9.1x to 13.6x and
5.3x to 6.5x, respectively, to corresponding financial data for the Company
resulted in an equity reference range for the Company of approximately $9.35 to
$17.85 per share, as compared to the Merger Consideration of $16.00 per share.
 
     No company, transaction or business used in the "Selected Company Analysis"
or "Selected Merger and Acquisition Transactions Analysis" as a comparison is
identical to the Company or the Merger. Accordingly, an analysis of the results
of the foregoing is not entirely mathematical; rather, it involves complex
considerations and judgments concerning differences in financial and operating
characteristics and other factors that could affect the acquisition, public
trading or other values of the Selected Companies, Selected Transactions or the
business segment, company or transaction to which they are being compared.
 
     Discounted Cash Flow Analysis. Smith Barney performed a discounted cash
flow analysis of the projected free cash flow of the Company for the six months
ended December 31, 1997 through the fiscal year 2003, based on internal
estimates of the management of the Company as of May 15, 1997 (which estimates
took into account certain cost savings and expansion programs of the Company),
both before and after giving effect to certain industry cycles, and based on
internal estimates of the management of the Company as of April 28, 1997 (which
estimates did not take into account the Company's cost savings and expansion
programs). In its analysis of certain industry cycles relative to the Company's
May 1997 estimates, Smith Barney applied the cash margins achieved on
polyethylene and polypropylene products during the period 1990 through 1996 as
reported in industry publications to the Company's expected production capacity
for such products, as estimated by the Company's management, for the period 1997
through 2003. The stand-alone discounted cash flow analysis of the Company was
determined by (i) adding (x) the present value of projected free cash flows over
the seven-year period from 1997 to 2003 and (y) the present value of the
Company's estimated terminal value in year 2003 and (ii) subtracting the current
net debt of the Company. The range of estimated terminal values for the Company
at the end of the seven-year period was calculated by applying terminal value
multiples ranging from 5.0x to 6.0x to the Company's normalized EBITDA,
representing the Company's average EBITDA over such seven-year period. The cash
flows and terminal values of the Company were discounted to present value using
discount rates ranging from 14.0% to 16.0%, with particular focus on a discount
rate of 15%. Utilizing such terminal values and a discount rate of 15%, this
analysis resulted in equity reference ranges for the Company of approximately
$22.72 to $27.00 per share based on management's May 1997 estimates,
approximately $19.73 to $23.75 per share based on management's
 
                                       24
<PAGE>   31
 
April 1997 estimates, and approximately $13.72 to $17.23 per share based on
management's May 1997 estimates after giving effect to certain industry cycles,
as compared to the Merger Consideration of $16.00 per share.
 
     Debt Capacity Analysis. Smith Barney performed an analysis designed to
determine the price that could be paid by a financial investor to complete a
leveraged buyout (an "LBO") of the Company, based both on latest 12 months
EBITDA and on estimated calendar year 1997 EBITDA. For purposes of such
analysis, Smith Barney assumed, among other things, that the transaction could
be financed using a capital structure consisting of 40% bank debt at an assumed
interest rate of 8.5%, 30% subordinated debt at an assumed interest rate of
11.0%, and 30% equity. This analysis resulted in an implied equity valuation for
the Company of approximately $12.98 per share based on latest 12 months EBITDA
and approximately $20.34 per share based on estimated calendar year 1997 EBITDA.
 
     Premium Analysis. Smith Barney analyzed the implied premium payable in the
Merger and the premiums paid in the following Selected Transactions based on,
among other things, stock prices one month prior to announcement of such
transactions: PetroFina S.A./Fina, Inc.; Agrium Inc./Viridian Inc.; Potash
Corporation of Saskatchewan Inc./Arcadian Corporation; The Unicorn Group, L.L.C.
and The Sterling Group, Inc./Sterling Chemicals, Inc.; and Crompton & Knowles
Corporation/Uniroyal Chemical Corporation. Applying a range of selected premiums
for these Selected Transactions of approximately 34.0% to 53.8% to the closing
sale price of Common Stock on June 17, 1996 (one month prior to the date on
which Huntsman first contacted the Company as to its intention to acquire the
Company) resulted in an implied equity reference range for the Company of
approximately $14.07 to $16.15 per share.
 
     Other Factors and Comparative Analyses. In rendering its opinion, Smith
Barney considered certain other factors and conducted certain other comparative
analyses, including, among other things, a review of (i) indications of interest
received from third parties other than Huntsman; (ii) the Company's historical
and projected financial results; (iii) the history of trading prices and volume
for Common Stock and the relationship between movements of such common stock,
movements in the common stock of the Commodity Chemicals Companies and movements
in the S&P Industrial 400 Index; and (iv) a comparison of the adjusted market
values of the Company and selected publicly traded companies in the commodity
chemicals industry as a percentage of the estimated replacement costs of the
Company's and such selected companies' assets.
 
     Pursuant to the terms of Smith Barney's engagement, the Company has agreed
to pay Smith Barney for its services in connection with the Merger an aggregate
financial advisory fee equal to 1% of the total consideration payable in
connection with the Merger. The Company also has agreed to reimburse Smith
Barney for reasonable out-of-pocket expenses incurred by Smith Barney in
performing its services, including the reasonable fees and expenses of its
outside legal counsel, and to indemnify Smith Barney and related persons against
certain liabilities, including liabilities under the federal securities laws,
arising out of Smith Barney's engagement.
 
     Smith Barney has advised the Company that, in the ordinary course of
business, Smith Barney and its affiliates may actively trade or hold the
securities of the Company for their own account or for the account of customers
and, accordingly, may at any time hold a long or short position in such
securities. Smith Barney has in the past provided certain investment banking
services to the Company unrelated to the proposed Merger, for which services
Smith Barney has received compensation. In addition, Smith Barney and its
affiliates (including Travelers Group Inc. and its affiliates) may maintain
relationships with the Company, Huntsman and their respective affiliates.
 
     Smith Barney is an internationally recognized investment banking firm and
was selected by the Company based on Smith Barney's experience, expertise and
familiarity with the Company and its business. Smith Barney regularly engages in
the valuation of businesses and their securities in connection with mergers and
acquisitions, negotiated underwritings, competitive bids, secondary
distributions of listed and unlisted securities, private placements and
valuations for estate, corporate and other purposes.
 
                                       25
<PAGE>   32
 
INTERESTS OF CERTAIN PERSONS IN THE MERGER
 
     In considering the recommendation of the Board with respect to the Merger,
stockholders of the Company should be aware that the directors and executive
officers of the Company have certain interests in the Merger that may be
substantial or in addition to the interests of stockholders of the Company
generally. The Board was aware of these interests and considered them, among
other factors, in approving the Merger Agreement. These interests are summarized
below.
 
   
     Interests in Common Stock and Options. As of July 23, 1997, the executive
officers and directors of the Company owned an aggregate of 787,307 shares of
Common Stock. The aggregate consideration which would be received in the Merger
by the executive officers and directors of the Company in respect of such shares
would be $12,596,912.
    
 
   
     In addition, as of July 23, 1997, the executive officers and directors of
the Company had the right to acquire 595,255 shares of Common Stock upon the
exercise of Options granted to such executive officers and directors pursuant to
the Option Plans. Pursuant to the Merger Agreement, immediately prior to the
Effective Time, (i) each outstanding Option, whether or not then exercisable or
vested, will become fully exercisable and vested, (ii) each outstanding Option
will be cancelled and (iii) in consideration of such cancellation and in full
satisfaction of all rights of the holder thereof, Huntsman will (or will cause
Sub to) pay to the holder of each Option, net of applicable withholding taxes,
an amount in cash equal to the product of the excess of the Merger Consideration
over the exercise price of such Option and the number of shares of Common Stock
subject to such Option. The cash which would be received by the executive
officers and directors of the Company upon consummation of the Merger pursuant
to the foregoing formula would be approximately $4,235,757. See "The Merger
Agreement -- Option Plans."
    
 
     Termination Agreements. Certain of the executive officers of the Company
are parties to termination agreements with the Company entered into in 1996 (the
"Termination Agreements"). Each Termination Agreement provides that in the event
the executive officer is terminated without cause within three years after a
change in control of the Company or if the executive officer voluntarily resigns
his employment with the Company because as a condition to continued employment
with the Company such executive officer is required to relocate outside the
continental United States or within the continental United States without
assistance equal to that provided under the Company's standard relocation
policy, accept a reduction in base salary or accept a position of lesser
responsibility, the Company is obligated to pay to the executive officer, within
ten business days after the effective date of such termination, a lump-sum cash
severance equal to three times his then-current annual base salary, less $1.00
(the "Termination Payments").
 
   
     Consummation of the Merger will result in a change in control of the
Company under each of the Termination Agreements. The Merger Agreement provides
that, except as may otherwise be agreed in writing by Huntsman and the
applicable EMC Member (as defined herein), Huntsman has determined that it will
not offer any of the Company's executive officers a position of equal
responsibility to such executive officer's position in the Company prior to the
Effective Time. Accordingly, as a result of the Merger, pursuant to the Merger
Agreement, each of the Company's executive officers (other than Lavon N.
Anderson, who will retire on September 1, 1997) would receive the Termination
Payments from the Company. The aggregate amount of the Termination Payments that
would be received by all of the Company's executive officers upon consummation
of the Merger would be $4,611,070.
    
 
     Supplemental Retirement Plan. Pursuant to the Rexene Corporation
Supplemental Executive Retirement Plan (the "SERP"), the Company's executive
officers are entitled to certain supplemental retirement and survivor benefits
in addition to the benefits to which such executive officers are entitled under
the Company's other retirement plans. The SERP provides that upon a change in
control of the Company, the benefits of each participant in the SERP will become
100% vested and funded in a rabbi trust (the "SERP Trust"). Consummation of the
Merger will result in a change of control of the Company under the SERP. No
participant in the SERP is entitled to receive benefits before his normal
retirement date as set forth in the SERP. Pursuant to the Merger Agreement, upon
consummation of the Merger, an aggregate amount of additional funds would be
required to be contributed by the Company to the SERP Trust to fund the benefits
 
                                       26
<PAGE>   33
 
accrued thereunder equal to the lesser of (i) $4,000,000 or (ii) an amount
sufficient to purchase annuities for the full accrued benefit of each
participant under the SERP.
 
     Performance Unit Plans. Pursuant to the Rexene Corporation Long-Term
Performance Unit Plan, the Rexene Corporation 1996 Performance Unit Plan for Key
Employees and the Rexene Corporation 1996 Performance Unit Plan for Executive
Officers (the "PUPs"), certain employees of the Company, including the executive
officers of the Company, are entitled to receive bonuses based upon the
achievement of profitability and return on investment goals set forth in the
PUPs. The PUPs provide that upon a change in control of the Company, all
performance periods under the PUPs will be terminated and the participants in
the PUPs will be entitled to receive payments based upon such shortened
performance periods. Consummation of the Merger will result in a change in
control of the Company under the PUPs. Accordingly, pursuant to the Merger
Agreement, on or prior to the Effective Time, the Company would terminate the
PUPs and pay to participants in the PUPs all amounts to which such participants
would become entitled on or after the Effective Time, based upon certain
assumptions set forth in the Merger Agreement. The maximum aggregate amount
which the Company's executive officers would be paid at the Effective Time
pursuant to the PUPs is estimated to be approximately $1,773,000 (assuming the
Effective Time were to occur in September 1997).
 
     Annual Incentive Plan. Pursuant to the Company's Key Employees Annual
Incentive Plan and Executive Management Committee Annual Incentive Plan (the
"Annual Incentive Plans"), certain employees of the Company, including the
executive officers of the Company, are entitled to bonus compensation based upon
the achievement of personal performance goals established for each participant
at the beginning of the applicable year. Pursuant to the Merger Agreement, on or
prior to the Effective Time the Company would terminate the Annual Incentive
Plans and pay to participants in the Annual Incentive Plans all amounts
determined in accordance with the terms of such plans to be payable for the
portion of the Company's fiscal year completed through the Effective Time. The
maximum aggregate amount which the Company's executive officers would be paid at
the Effective Time pursuant to the Annual Incentive Plans is estimated to be
approximately $493,000 (assuming the Effective Time were to occur in September
1997).
 
     Certain Trust Arrangements. The Merger Agreement provides that all amounts
due to each executive officer of the Company at the Effective Time under the
Termination Agreements, the PUPs, the Annual Incentive Plans (to the extent not
previously paid), in respect of the Options held by such officer and in respect
of unused vacation time for 1997 will, immediately prior to the Effective Time,
be wire-transferred by the Company to a rabbi trust (the "Trust"). On the day
following the Effective Time, the Trust will wire-transfer to such executive
officer all amounts received by the Trust with respect to such executive
officer.
 
     Indemnification and Insurance. The Merger Agreement provides for certain
arrangements with respect to the ongoing obligations of Huntsman to indemnify,
and maintain insurance on behalf of, the directors and executive officers of the
Company in respect of certain liabilities. See "The Merger Agreement -- Certain
Covenants -- Directors' and Officers' Insurance and Indemnification."
 
   
     Investment Banking Fees. Mr. Kaufthal, a director of the Company, is Vice
Chairman of Schroders, one of the Company's financial advisors in connection
with the Merger. Schroders will receive a fee from the Company upon consummation
of the Merger. See "The Merger -- Opinions of the Company's Financial
Advisors -- Opinion of Schroders."
    
 
   
     Employment Arrangements. Subsequent to the execution of the Merger
Agreement, Huntsman offered to enter into an agreement with Mr. Smith to serve
as Vice Chairman of the Surviving Corporation for a term of three years
following the Effective Time, contingent upon Mr. Smith waving certain terms of
his Termination Agreement, including his right to receive the Termination
Payment described under "-- Termination Agreements" upon consummation of the
Merger. Huntsman's proposal provides for, among other things, an aggregate
annual salary and director fees of $550,000 and benefits comparable to those
made available to other senior officers of the Surviving Corporation. Mr. Smith
has not responded to Huntsman's proposal and there can be no assurance that Mr.
Smith will ultimately accept employment with the Surviving Corporation.
    
 
                                       27
<PAGE>   34
 
   
     Huntsman also has indicated to certain additional officers of the Company
that it is interested in having such officers continue their employment with the
Surviving Corporation after the Merger. No details of these arrangements have
been finalized and there can be no assurance that any of such officers will
ultimately accept employment with the Surviving Corporation.
    
 
FINANCING THE MERGER
 
     The total amount (the "Required Funding") required to pay the Merger
Consideration to the Company's stockholders, refinance the Company's existing
bank debt, and pay estimated fees, expenses and other transaction costs of
Huntsman and Sub in connection with the Merger will be approximately $468
million. Sub will obtain such amount from Huntsman in the form of equity and
debt investments by Huntsman in Sub. Huntsman intends to borrow such amounts
under its existing credit facilities.
 
     Such credit facilities consist of (i) a $950 million revolving loan
facility (the "Revolving Loan Facility") pursuant to a $1.725 billion Credit
Agreement with a group of lenders for which Bankers Trust Company acts as
Administrative Agent, dated as of January 29, 1996, as amended (the "Credit
Agreement") and (ii) a $200 million term loan facility (the "Term B Loan")
pursuant to a $450 million Term Loan Agreement with a group of lenders for which
Bankers Trust Company acts as Agent, dated as of October 23, 1996, as amended
(the "Term Loan Agreement").
 
     As of July 10, 1997 (i) no amounts had yet been borrowed under the Term B
Loan, leaving $200 million which Huntsman expects to fully borrow at the
Effective Time in connection with the Required Funding and (ii) there was
approximately $260 million utilized under the Revolving Loan Facility, leaving
approximately $690 million of availability thereunder as of such date, a portion
of which Huntsman expects to use to finance the balance of the Required Funding.
 
     Funds available under the Revolving Loan Facility and the Term B Loan will
be used to provide the Required Funding. The availability of loan proceeds under
the Revolving Loan Facility is subject to certain customary borrowing conditions
as set forth in the Credit Agreement, including the absence of any default and
the continued accuracy, in all material respects, of the representations and
warranties of Huntsman contained therein. The availability of loan proceeds
under the Term B Loan is subject to certain customary borrowing conditions as
set forth in the Term Loan Agreement, including the approval and adoption of the
Merger Agreement by the holders of a majority of the outstanding shares of
Common Stock and the execution and delivery of certain collateral security
documentation. If holders of any of the Senior Notes (as defined herein)
exercise their put rights upon a change in control of the Company, there will be
sufficient availability under the Revolving Loan Facility for Huntsman to
provide the Company with the funds necessary to acquire the Senior Notes.
 
     The Credit Agreement and Term Loan Agreement loans bear interest at either
the prime rate plus a margin or at a Eurodollar rate plus a margin. The margin
changes quarterly, based upon Huntsman's total debt to EBITDA ratio, within
ranges of (1) 0% to 0.5% for Credit Agreement prime rate loans, (2) 0.5% to
1.75% for Credit Agreement Eurodollar rate loans, (3) 0.5% to 0.75% for Term B
Loan prime rate loans, and (4) 1.75% to 2.25% for Term B Loan Eurodollar loans.
Loans under both the Credit Agreement and the Term Loan Agreement are secured by
substantially all of the assets of Huntsman and its principal domestic
subsidiaries and are guaranteed by such subsidiaries. Subject to the limitations
of the indenture entered into in connection with the Senior Notes and pursuant
to certain contracts, both the Credit Agreement and Term Loan Agreement require
that substantially all of the assets of the Company be pledged to secure
Huntsman's obligations under such facilities following the Merger and that the
Company guarantee such obligations.
 
ACCOUNTING TREATMENT
 
     The Merger will be accounted for by Huntsman as a "purchase" in accordance
with generally accepted accounting principles. Therefore, the aggregate
consideration paid by Huntsman in connection with the Merger will be allocated
to the Company's assets and liabilities based upon their fair values, with any
excess being treated as goodwill. The assets and liabilities and results of
operations of the Company will be
 
                                       28
<PAGE>   35
 
consolidated into the assets and liabilities and results of operations of
Huntsman subsequent to the consummation of the Merger.
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
     The following discussion describes certain United States federal income tax
consequences relevant to the Merger. The discussion is based upon the Internal
Revenue Code of 1986, as amended (the "Code"), existing and proposed Treasury
regulations promulgated thereunder, rulings, administrative pronouncements and
judicial decisions, changes to which could materially affect the tax
consequences described herein and could be made on a retroactive basis.
 
     The receipt of cash in exchange for Common Stock pursuant to the Merger
will be a taxable transaction for federal income tax purposes and may also be a
taxable transaction under applicable state, local and foreign income and other
tax laws. The tax consequences of such receipt may vary depending upon, among
other things, the particular circumstances of the stockholder. In general, a
stockholder will recognize gain or loss for federal income tax purposes equal to
the difference between the adjusted tax basis of his or her Common Stock and the
amount of cash received in exchange therefor in the Merger. Such gain or loss
will be capital gain or loss if the Common Stock is a capital asset in the hands
of the stockholder and will be long-term gain or loss if the holding period for
the Common Stock is more than one year at the Effective Time.
 
     Congress is currently considering proposed legislation that, if enacted,
would reduce the maximum rate of tax on net capital gains for individuals from
28% to 20% for capital assets sold or exchanged on or after May 7, 1997. There
can be no assurance, however, that any legislation will be enacted that would
reduce the effective tax rate on capital gains or, even if enacted, would be
applicable to the Merger.
 
     The receipt of cash by a stockholder of the Company pursuant to the Merger
may be subject to backup withholding at the rate of 31% unless the stockholder
(i) is a corporation or comes within certain other exempt categories, or (ii)
provides a certified taxpayer identification number on Form W-9 and otherwise
complies with the backup withholding rules. Backup withholding is not an
additional tax; any amounts so withheld may be credited against the federal
income tax liability of the stockholder subject to the withholding.
 
     The foregoing discussion does not address all aspects of federal income
taxation that may be relevant to a stockholder and may not apply to stockholders
(i) who acquired their Common Stock pursuant to the exercise of employee stock
options or other compensation arrangements with the Company or (ii) who are not
citizens or residents of the United States or (iii) who perfect their Appraisal
Rights or (iv) who are subject to special tax treatment under the Code (such as
dealers in securities, insurance companies, other financial institutions,
regulated investment companies and tax-exempt entities).
 
     THE TAX DISCUSSION SET FORTH ABOVE IS INCLUDED FOR GENERAL INFORMATION
ONLY. DUE TO THE INDIVIDUAL NATURE OF TAX CONSEQUENCES, STOCKHOLDERS ARE URGED
TO CONSULT THEIR TAX ADVISORS AS TO THE SPECIFIC TAX CONSEQUENCES TO THEM OF THE
MERGER, INCLUDING THE EFFECTS OF APPLICABLE STATE, LOCAL OR FOREIGN INCOME OR
OTHER TAX LAWS.
 
REGULATORY APPROVALS
 
     The Merger is subject to the requirements of the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, as amended (the "HSR Act"), and the rules
and regulations thereunder, which provide that certain transactions may not be
consummated until required information and materials are furnished to the
Antitrust Division of the Department of Justice (the "Antitrust Division") and
the Federal Trade Commission (the "FTC") and the requisite waiting period
expires or terminates. The Company and Huntsman made all filings required by the
Antitrust Division and the FTC on June 13, 1997, commencing a thirty-day waiting
period. The FTC granted early termination of the statutory waiting period
effective July 3, 1997. Although the waiting period has expired under the HSR
Act pursuant to early termination, at any time before or after the Effective
Time, the Antitrust Division or the FTC could take such action under the
antitrust laws as it deems necessary or desirable in the public interest, or
certain other persons could take action under the antitrust laws, including
seeking to enjoin the Merger.
 
                                       29
<PAGE>   36
 
EFFECT OF MERGER ON SENIOR NOTES
 
     The Company currently has outstanding $175 million aggregate principal
amount of its 11 3/4% Senior Notes due 2004 (the "Senior Notes"). The Senior
Notes were issued under an Indenture, dated as of November 29, 1994 (the "Senior
Notes Indenture"), between the Company and Bank One, Texas, N.A., as trustee.
Pursuant to the Senior Notes Indenture, the Company is not permitted to
consolidate or merge with or into another person (whether or not the Company is
the surviving corporation) unless certain financial tests are met. Upon
consummation of the Merger, the Company will meet such financial tests and,
accordingly, is permitted to consummate the Merger pursuant to the terms of the
Senior Notes Indenture.
 
     In addition, the Senior Notes Indenture provides that, in the event of a
"Change of Control" (as defined in the Senior Notes Indenture), each holder of
Senior Notes will have the right to require the Company to purchase all or any
part of such holder's Senior Notes at a cash purchase price equal to 101% of the
principal amount thereof plus accrued and unpaid interest to the date of
purchase. Consummation of the Merger will result in a "Change of Control" within
the meaning of the Senior Notes Indenture. Accordingly, holders of Senior Notes
will be entitled to exercise such repurchase rights following consummation of
the Merger.
 
CERTAIN CONSEQUENCES OF THE MERGER
 
     As a result of the Merger, Sub will be merged with and into the Company and
the Company will become a wholly owned subsidiary of Huntsman. Following
consummation of the Merger, the Common Stock will be delisted from the NYSE,
deregistered under the Exchange Act and will no longer be publicly traded.
 
     Since the Senior Notes are registered under the Exchange Act and listed on
the NYSE, the Company will continue to be subject to the informational
requirements of the Exchange Act following the consummation of the Merger so
long as the Senior Notes remain outstanding.
 
APPRAISAL RIGHTS
 
     Under the DGCL, any stockholder who does not wish to accept $16.00 per
share for his or her shares of Common Stock as provided in the Merger Agreement
has the right to dissent from the Merger and to seek an appraisal of, and to be
paid the fair value (exclusive of any element of value arising from the
accomplishment or expectation of the Merger) for the shares of Common Stock,
provided that the stockholder complies with the provisions of Section 262 of the
DGCL.
 
     Holders of record of Common Stock who do not vote in favor of the Merger
Agreement and who otherwise comply with the applicable statutory procedures
summarized herein will be entitled to appraisal rights under Section 262 of the
DGCL. A person having a beneficial interest in shares of Common Stock held of
record in the name of another person, such as a broker or nominee, must act
promptly to cause the record holder to follow the steps summarized below
properly and in a timely manner to perfect appraisal rights.
 
     THE FOLLOWING DISCUSSION IS NOT A COMPLETE STATEMENT OF THE LAW PERTAINING
TO APPRAISAL RIGHTS UNDER THE DGCL AND IS QUALIFIED IN ITS ENTIRETY BY THE FULL
TEXT OF SECTION 262 OF THE DGCL WHICH IS REPRINTED IN ITS ENTIRETY AS ANNEX D.
ALL REFERENCES IN SECTION 262 OF THE DGCL AND IN THIS SUMMARY TO A "STOCKHOLDER"
OR "HOLDER" ARE TO THE RECORD HOLDER OF THE SHARES OF COMMON STOCK AS TO WHICH
APPRAISAL RIGHTS ARE ASSERTED.
 
     Under Section 262 of the DGCL, holders of shares of Common Stock
("Appraisal Shares") who follow the procedures set forth in Section 262 of the
DGCL will be entitled to have their Appraisal Shares appraised by the Delaware
Chancery Court and to receive payment in cash of the "fair value" of such
Appraisal Shares, exclusive of any element of value arising from the
accomplishment or expectation of the Merger, together with a fair rate of
interest, if any, as determined by such court.
 
     Under Section 262 of the DGCL, where a proposed merger is to be submitted
for approval at a meeting of stockholders, the corporation, not less than 20
days prior to the meeting, must notify each of its stockholders who was a
stockholder on the record date for such meeting with respect to shares for which
appraisal rights are available, that appraisal rights are so available, and must
include in such notice a copy of Section 262 of the DGCL.
 
                                       30
<PAGE>   37
 
     This Proxy Statement constitutes such notice to the holders of Appraisal
Shares and the applicable statutory provisions of the DGCL are attached to this
Proxy Statement as Annex D. Any stockholder who wishes to exercise such
appraisal rights or who wishes to preserve his or her right to do so should
review the following discussion and Annex D carefully, because failure timely
and properly to comply with the procedures therein specified will result in the
loss of appraisal rights under the DGCL.
 
     A holder of Appraisal Shares wishing to exercise such holder's appraisal
rights (a) must not vote in favor of the Merger Agreement and (b) must deliver
to the Company prior to the vote on the Merger Agreement at the Special Meeting,
a written demand for appraisal of such holder's Appraisal Shares. This written
demand for appraisal must be in addition to and separate from any proxy or vote
abstaining from or against the Merger. This demand must reasonably inform the
Company of the identity of the stockholder and of the stockholder's intent
thereby to demand appraisal of his or her shares. A holder of Appraisal Shares
wishing to exercise such holder's appraisal rights must be the record holder of
such Appraisal Shares on the date the written demand for appraisal is made and
must continue to hold such Appraisal Shares until the consummation of the
Merger. Accordingly, a holder of Appraisal Shares who is the record holder of
Appraisal Shares on the date the written demand for appraisal is made, but who
thereafter transfers such Appraisal Shares prior to consummation of the Merger,
will lose any right to appraisal in respect of such Appraisal Shares.
 
     Only a holder of record of Appraisal Shares is entitled to assert appraisal
rights for the Appraisal Shares registered in that holder's name. A demand for
appraisal should be executed by or on behalf of the holder of record, fully and
correctly, as such holder's name appears on such holder's stock certificates. If
the Appraisal Shares are owned of record in a fiduciary capacity, such as by a
trustee, guardian or custodian, execution of the demand should be made in that
capacity, and if the Appraisal Shares are owned of record by more than one owner
as in a joint tenancy or tenancy in common, the demand should be executed by or
on behalf of all joint owners. An authorized agent, including one or more joint
owners, may execute a demand for appraisal on behalf of a holder of record;
however, the agent must identify the record owner or owners and expressly
disclose the fact that, in executing the demand, the agent is agent for such
owner or owners. A record holder such as a broker who holds Appraisal Shares as
nominee for several beneficial owners may exercise appraisal rights with respect
to the Appraisal Shares held for one or more beneficial owners while not
exercising such rights with respect to the Appraisal Shares held for other
beneficial owners; in such case, the written demand should set forth the number
of Appraisal Shares as to which appraisal is sought. When no number of Appraisal
Shares is expressly mentioned, the demand will be presumed to cover all
Appraisal Shares in brokerage accounts or other nominee forms and those who wish
to exercise Appraisal Rights under Section 262 of the DGCL are urged to consult
with their brokers to determine the appropriate procedures for the making of a
demand for appraisal by such a nominee.
 
     ALL WRITTEN DEMANDS FOR APPRAISAL SHOULD BE SENT OR DELIVERED TO REXENE
CORPORATION AT 5005 LBJ FREEWAY, DALLAS, TEXAS 75244, ATTENTION: SECRETARY.
 
     Within ten days after the consummation of the Merger, the Company will
notify each stockholder who has properly asserted appraisal rights under Section
262 of the DGCL and has not voted in favor of the Merger Agreement of the date
the Merger became effective.
 
     Within 120 days after the consummation of the Merger, but not thereafter,
the Company or any stockholder who has complied with the statutory requirements
summarized above may file a petition in the Delaware Chancery Court demanding a
determination of the fair value of the Appraisal Shares. The Company is under no
obligation to and has no present intention to file a petition with respect to
the appraisal of the fair value of the Appraisal Shares. Accordingly, it is the
obligation of stockholders wishing to assert appraisal rights to initiate all
necessary action to perfect their appraisal rights within the time prescribed in
Section 262 of the DGCL.
 
     Within 120 days after the consummation of the Merger, any stockholder who
has complied with the requirements for exercise of appraisal rights will be
entitled, upon written request, to receive from the Company a statement setting
forth the aggregate number of Appraisal Shares not voted in favor of adoption of
the Merger Agreement and with respect to which demands for appraisal have been
received and the aggregate number of holders of such Appraisal Shares. Such
statements must be mailed within ten days after a written request therefor has
been received by the Company.
 
                                       31
<PAGE>   38
 
     If a petition for an appraisal is filed timely, after a hearing on such
petition, the Delaware Chancery Court will determine the stockholders entitled
to appraisal rights and will appraise the "fair value" of their Appraisal
Shares, exclusive of any element of value arising from the accomplishment or
expectation of the Merger, together with a fair rate of interest, if any, to be
paid upon the amount determined to be the fair value. Stockholders considering
seeking appraisal should be aware that the fair value of their Appraisal Shares
as determined under Section 262 of the DGCL could be more than, the same as or
less than the value of the consideration they would receive pursuant to the
Merger Agreement if they did not seek appraisal of their Appraisal Shares and
that investment banking opinions as to fairness from a financial point of view
are not necessarily opinions as to fair value under Section 262 of the DGCL. The
Delaware Supreme Court has stated that "proof of value by any techniques or
methods which are generally considered acceptable in the financial community and
otherwise admissible in court" should be considered in the appraisal
proceedings.
 
     The Delaware Chancery Court will determine the amount of interest, if any,
to be paid upon the amounts to be received by stockholders whose Appraisal
Shares have been appraised. The costs of the action may be determined by the
Delaware Chancery Court and taxed upon the parties as the Delaware Chancery
Court deems equitable. The Delaware Chancery Court may also order that all or a
portion of the expenses incurred by any stockholder in connection with an
appraisal, including, without limitation, reasonable attorneys' fees and the
fees and expenses of experts utilized in the appraisal proceeding, be charged
pro rata against the value of all of the Appraisal Shares entitled to appraisal.
 
     Any holder of Appraisal Shares who has duly demanded an appraisal in
compliance with Section 262 of the DGCL will not, after the consummation of the
Merger, be entitled to vote the Appraisal Shares subject to such demand for any
purpose or be entitled to the payment of dividends or other distributions on
those Appraisal Shares (except dividends or other distributions payable to
holders of record of Appraisal Shares as of a record date prior to the
consummation of the Merger).
 
     If any stockholder who properly demands appraisal of his or her Appraisal
Shares under Section 262 of the DGCL fails to perfect, or effectively withdraws
or loses, his or her right to appraisal, as provided in Section 262 of the DGCL,
the Appraisal Shares of such stockholder will be converted into the right to
receive the consideration receivable with respect to such Appraisal Shares in
accordance with the Merger Agreement. A stockholder will fail to perfect, or
effectively lose or withdraw, his or her right to appraisal if, among other
things, no petition for appraisal is filed within 120 days after the
consummation of the Merger, or if the stockholder delivers to the Company a
written withdrawal of his or her demand for appraisal. Any such attempt to
withdraw an appraisal demand more than 60 days after the consummation of the
Merger will require the written approval of the Company.
 
     FAILURE TO FOLLOW THE STEPS REQUIRED BY SECTION 262 OF THE DGCL FOR
PERFECTING APPRAISAL RIGHTS MAY RESULT IN THE LOSS OF SUCH RIGHTS (IN WHICH
EVENT A STOCKHOLDER WILL BE ENTITLED TO RECEIVE THE CONSIDERATION RECEIVABLE
WITH RESPECT TO HIS OR HER APPRAISAL SHARES IN ACCORDANCE WITH THE MERGER
AGREEMENT).
 
CERTAIN LEGAL MATTERS
 
     On July 23, 1996, the Company was served with a purported stockholder
class-action lawsuit as filed in the Chancery Court of the State of Delaware in
and for New Castle County (the "Chancery Court"), arising from the Company's
rejection of Huntsman's unsolicited offer to purchase all of the issued and
outstanding shares of Common Stock for $14.00 per share. The lawsuit names the
Company and each of its directors as defendants. The complaint alleges that the
defendant directors breached their fiduciary duty to stockholders by refusing to
attempt in good faith to maximize stockholders' value in the sale of the Company
and engaging in a plan to thwart and reject offers from third parties, including
Huntsman, in order to entrench management. Plaintiff seeks certification of the
lawsuit as a class action, an order requiring defendants to take various actions
including exposing the Company to the marketplace in an effort to create an
auction of the Company and an unspecified amount of damages. The Company is also
aware of two other similar lawsuits that are also pending in the Chancery Court.
The Company believes that these lawsuits are without merit and intends to
contest them vigorously.
 
                                       32
<PAGE>   39
 
                              THE MERGER AGREEMENT
 
     The following is a brief summary of certain material provisions of the
Merger Agreement which is attached as Annex A to this Proxy Statement and
incorporated herein by reference. Such summary does not purport to be complete
and is qualified in its entirety by reference to the Merger Agreement. All
capitalized terms used herein and not defined are used as defined in the Merger
Agreement. Stockholders are urged to review the Merger Agreement carefully and
in its entirety.
 
THE MERGER
 
     In General. The Merger Agreement provides that, following the approval and
adoption of the Merger Agreement by the stockholders of the Company and the
satisfaction or waiver of the other conditions to the Merger, Sub will be merged
with and into the Company, the separate existence of Sub will cease and the
Company will be the Surviving Corporation. Following the Merger, the Surviving
Corporation will be a wholly owned subsidiary of Huntsman. As a result of the
Merger, all the rights, privileges, immunities, powers and franchises of the
Company and Sub will vest in the Surviving Corporation and all obligations,
duties, debts and liabilities of the Company and Sub will become the
obligations, duties, debts and liabilities of the Surviving Corporation.
 
     Conversion of Securities. At the Effective Time, (a) each outstanding share
of Common Stock (other than shares held by the Company or any direct or indirect
wholly owned subsidiary of the Company, shares held by Huntsman or any direct or
indirect wholly owned subsidiary of Huntsman and shares held by the
stockholders, if any, who properly exercised their appraisal rights under
Delaware law), will be converted into the Merger Consideration, which is the
right to receive $16.00 per share, in cash, without interest and (b) each
outstanding share of common stock of Sub will be converted into one fully paid
and nonassessable share of common stock of the Surviving Corporation. The shares
of Common Stock will no longer be listed or traded on the NYSE and the
registration of the Common Stock under the Exchange Act will be terminated. See
"The Merger -- Certain Consequences of the Merger."
 
     Shares of Common Stock outstanding immediately prior to the Effective Time
and held by a holder who has not voted in favor of the Merger or consented
thereto in writing and who has delivered a written demand for appraisal of such
shares in accordance with Section 262 of the DGCL will not be converted into the
Merger Consideration, unless and until such holder fails to perfect his right to
appraisal and payment under the DGCL, whereupon such shares shall be treated as
if they had been converted as of the Effective Time into the Merger
Consideration.
 
     Effective Time. The Merger Agreement provides that, on or as promptly as
practicable following the satisfaction or waiver of all of the conditions to the
Merger, the parties will file a Certificate of Merger with the Secretary of
State of the State of Delaware, and the Merger will become effective upon such
filing or at such other time as is specified in the Certificate of Merger.
 
     Exchange of Certificates. As promptly as practicable after the Effective
Time, a paying agent designated by Huntsman (the "Paying Agent") will mail to
each holder of a certificate which immediately prior to the Effective Time
represented shares of Common Stock (a "Certificate") a letter of transmittal and
instructions for use in effecting the surrender of the Certificates in exchange
for the Merger Consideration. Upon surrender of a Certificate to the Paying
Agent, together with a duly executed letter of transmittal and any other
required documents, the holder of such Certificate will receive the Merger
Consideration. No interest will be paid or accrued on the cash payable upon the
surrender of the Certificates. After the Effective Time, holders of Certificates
will have no right to vote or to receive any dividends or other distributions
with respect to any shares of Common Stock, other than any distributions payable
to holders of record as of a date prior to the Effective Time, and shall have no
other rights other than as provided in the Merger Agreement or by applicable
law. Any cash that has been made available to the Paying Agent and that has not
been disbursed to holders of Certificates 180 days after the Effective Time will
be delivered to the Surviving Corporation, upon demand, and thereafter any
stockholders who have not complied with the provisions of the Merger Agreement
and the instructions set forth in the letter of transmittal shall look only to
the Surviving Corporation for payment of the Merger Consideration. Until
surrendered, each Certificate will represent only the right to
 
                                       33
<PAGE>   40
 
receive the Merger Consideration with respect to the number of shares of Common
Stock evidenced by such Certificate, without any interest thereon. The Paying
Agent will be entitled to deduct and withhold from the Merger Consideration such
amounts as may be required under the Code. Such withheld amounts shall be
treated as having been paid to the holder of the Certificates in respect of
which such deduction and withholding was made by the Paying Agent.
 
     STOCKHOLDERS OF THE COMPANY SHOULD NOT FORWARD THEIR STOCK CERTIFICATES TO
THE PAYING AGENT WITHOUT A LETTER OF TRANSMITTAL, AND SHOULD NOT RETURN THEIR
STOCK CERTIFICATES WITH THE ENCLOSED PROXY.
 
OPTION PLANS
 
     Immediately prior to the Effective Time, (i) all Options outstanding under
any of the Company's 1988 Stock Incentive Plan, 1993 Non-Qualified Stock Option
Plan, 1994 Long-Term Incentive Plan, Nonqualified Stock Option Plan For Outside
Directors or 1995 Stock Option Plan for Outside Directors (together, the "Option
Plans"), will become fully exercisable and vested, (ii) each Option will be
cancelled and (iii) in consideration of such cancellation and in full
satisfaction of all rights of the holder thereof, and subject to certain
payments to senior management, Huntsman will (or will cause Sub to) pay at the
Effective Time to the holder of each Option, net of applicable withholding
taxes, an amount in cash equal to the product of (A) the excess of the Merger
Consideration over the exercise price of such Option and (B) the number of
shares subject to such Option.
 
REPRESENTATIONS AND WARRANTIES
 
     The Merger Agreement contains various representations and warranties of the
Company, subject to certain exceptions, regarding the Company and its
Subsidiaries as to, among other things: (i) due organization, existence, good
standing, corporate power and authority, and qualifications or licensing to do
business; (ii) capitalization, including the number of shares of Common Stock
and Preferred Stock outstanding, the number of shares issuable upon the exercise
of Options, and obligations to issue, transfer, sell or vote in any particular
manner any equity or debt instrument; (iii) the authorization, execution, and
delivery of the Merger Agreement and the consummation of the transactions
contemplated thereby, and the validity and enforceability thereof; (iv) the
absence of consents and approvals necessary for consummation of the Merger, and
the absence of any violations, breaches or defaults which would result from
compliance by the Company with any provisions of the Merger Agreement; (v)
compliance with the Securities Act and the Exchange Act in connection with the
Company SEC Documents; (vi) the financial statements included in the Company SEC
Documents; (vii) the absence of certain changes which would constitute a
Material Adverse Effect, and the Company's and its Subsidiaries' compliance with
its ordinary course of business consistent with past practice; (viii) the
absence of undisclosed liabilities; (ix) compliance of the Proxy Statement with
the applicable provisions of the Exchange Act; (x) certain employee benefit plan
and ERISA matters; (xi) the absence of pending litigation or violation of any
law which is reasonably likely to have a Material Adverse Effect; (xii) certain
intellectual property matters; (xiii) the absence of default in respect of any
Material Company Agreement which would have a Material Adverse Effect; (xiv)
certain tax matters; (xv) certain environmental matters; (xvi) the conduct of
business by the Company and its Subsidiaries in accordance with charter
documents, Material Company Agreements and applicable laws; (xvii) opinions of
financial advisors; (xviii) the absence of certain claims of brokers; (xix)
certain matters related to property; (xx) certain determinations and
recommendations by the Board and the non-applicability of State Takeover Laws
and the Rights Agreement; and (xxi) certain labor matters.
 
     The Merger Agreement also contains various representations and warranties
of Huntsman and Sub, subject to certain exceptions, with respect to Huntsman and
Sub as to, among other things: (i) their due organization, existence, good
standing, and corporate power and authority to do business; (ii) the
authorization, execution and delivery of the Merger Agreement and consummation
of the transactions contemplated thereby, and the validity and enforceability
thereof; (iii) the absence of consents and approvals necessary for consummation
of the Merger, and the absence of any violations of charter documents or
applicable law which would result from compliance with any provisions of the
Merger Agreement; (iv) the veracity of information
 
                                       34
<PAGE>   41
 
provided for inclusion in the Proxy Statement; and (v) the receipt of written
commitments from financial institutions with respect to the financing necessary
to effect the Merger and to consummate the other transactions contemplated by
the Merger Agreement.
 
CERTAIN COVENANTS
 
     Interim Operations. In the Merger Agreement, the Company has agreed that,
prior to the Effective Time, it will comply with certain covenants regarding,
inter alia, the conduct of the business of the Company and its Subsidiaries.
Among other things, the Company has agreed that, except as contemplated by the
Merger Agreement, the Company's capital expenditure program (the "CAPEX
Program"), or as approved in writing by Huntsman, the Company and its
Subsidiaries will each conduct its business only in the ordinary course
consistent with past practice and will use reasonable efforts to preserve its
business organization intact and maintain its existing relations with customers,
suppliers, employees, creditors and business partners, and the Company will use
its reasonable efforts to cause the Company's executive management committee
members (the "EMC Members") to continue to perform their duties for the Company.
 
     The Company has also agreed that, except as contemplated by the Merger
Agreement, the CAPEX Program, or as approved in writing by Huntsman (such
approval, except where noted, not to be unreasonably withheld), neither the
Company nor any of its Subsidiaries will: (a) directly or indirectly, split,
combine or reclassify the outstanding Common Stock or any outstanding capital
stock of any Subsidiaries; (b)(i) amend its certificate of incorporation or
by-laws; (ii) declare, set aside or pay any dividend or other distribution
payable in cash, stock or property, other than regular quarterly cash dividends
by the Company not in excess of $.04 per Share; (iii) issue, sell, transfer,
pledge, dispose of or encumber any additional shares of, or securities
convertible into, or rights of any kind to acquire, any shares of capital stock;
(iv) transfer, lease, license, sell, mortgage, pledge, dispose of or encumber
any material assets other than in the ordinary and usual course of business and
consistent with past practice; or (v) redeem, purchase or otherwise acquire
directly or indirectly any of its capital stock; (c) except as required by law
or as provided in the Merger Agreement: (i) grant any increase in the
compensation payable by the Company or any Subsidiary to any of their executive
officers, key employees or directors or (A) adopt any new, or (B) amend or
otherwise increase, or accelerate the payment or vesting of the amounts payable
or to become payable under any existing, bonus, incentive compensation, deferred
compensation, severance, profit sharing, stock option, stock purchase,
insurance, pension, retirement or other employee benefit plan agreement or
arrangement; or (ii) enter into or amend any employment or severance agreement
with or, except in accordance with written policies of the Company, grant any
severance or termination pay to any officer, director or employee of the Company
or any Subsidiary (with certain exceptions for Non-Key Employees limited by
specified dollar amounts); (d) modify or terminate any of the Material Company
Agreements or waive or assign any material rights or claims thereunder, with
certain ordinary course exceptions; (e) permit any material insurance policy
naming it as a beneficiary or a loss payable payee to be cancelled or terminated
without notice to Huntsman, unless equivalent replacement policies are put in
place; (f) (i) incur or assume any indebtedness or enter into any arrangements
with similar economic effects, except pursuant to the Existing Credit
Facilities; (ii) assume, guarantee or otherwise become liable for the
obligations of any other person; (iii) make any loans or capital contributions
to, or investments in, any other person (other than to wholly-owned Subsidiaries
or customary loans or advances to employees in accordance with past practice);
or (iv) enter into any material commitment or transaction, with certain ordinary
course exceptions; (g) settle or compromise any claim or obligation described in
a Commission filing or pay, discharge or satisfy any claims or obligations other
than (x) to the extent reflected or reserved against in, or contemplated by, the
consolidated financial statements (or the notes thereto) of the Company and its
consolidated Subsidiaries, (y) incurred in the ordinary course of business and
consistent with past practice or (z) which are legally required to be paid (with
certain specified exceptions), it being agreed that the Company and its
Subsidiaries shall not settle or compromise any claim or litigation brought by
any stockholder of the Company making such claim or bringing such litigation as
such a stockholder, either individually or on behalf of any class, without the
written consent of Huntsman; (h) adopt a plan of liquidation, dissolution,
merger or other reorganization (other than the Merger); (i) change any method,
principle or practice of accounting except as required by GAAP; (j) take, or
agree to take, any action that would make any representation or warranty of the
Company contained in the Merger Agreement inaccurate
 
                                       35
<PAGE>   42
 
at, or as of any time prior to, the Effective Time; (k) (i) fail to use
reasonable efforts to maintain its rights in all of the Intellectual Property
owned by the Company or its Subsidiaries that is material to the consolidated
business and operations thereof and use reasonable efforts not to permit any of
such Intellectual Property to lapse, expire or go abandoned; (ii) fail to
diligently and responsively prosecute all applications for patents or
registrations; and (iii) allow any rights with respect to material trademarks,
inventions or discoveries to go abandoned; (l) voluntarily make any material
change in any Tax accounting method, waive or consent to the extension of any
statute of limitations with respect to material Taxes, or consent to any
material assessment or settlement of any judicial proceeding affecting any
material amount of Taxes; (m) fail to take all reasonable steps in defense of
any publicly disclosable claim in any proceedings before any Governmental
Entity; (n) modify any of the following documents with respect to Orrex Plastics
Company LLC, a company of which the Company owns 50% ("Orrex"): (i) Joint
Venture Agreement dated April 29, 1997 for the establishment of Orrex, (ii)
First Amendment to Joint Venture Agreement, dated May 12, 1997, (iii)
Certificate of Organization of Orrex, (iv) Articles of Organization of Orrex,
and (v) Regulations for Orrex; and (o) enter into an agreement or arrangement to
do any of the foregoing, or to authorize, recommend, propose or announce an
intention to do any of the foregoing.
 
     No Solicitation. Under the Merger Agreement, the Company has agreed that
neither it nor its Subsidiaries or Affiliates will (and the Company will use its
best efforts to cause its Representatives not to), directly or indirectly,
encourage, solicit, participate in or initiate discussions or negotiations with,
or provide any information to, any corporation, partnership, person or other
entity or group (other than Huntsman, its Affiliates or Representatives)
concerning any merger, consolidation, tender offer, exchange offer, sale of a
material portion or product line of the assets and business of the Rexene
Products Division and/or the CT Film Division (whether in one or more
transactions), sale of shares of capital stock or debt securities,
restructuring, recapitalization, or similar transactions involving the Company
or any Subsidiary, division or operating or principal business unit of the
Company (whether in one or more transactions) (an "Acquisition Proposal"). The
Company further agreed that it would, and would cause its Representatives to,
immediately cease any activities, discussions or negotiations with any parties
conducted prior to the date of the Merger Agreement with respect to any of the
foregoing. The Merger Agreement provides that, notwithstanding the foregoing,
the Company may, directly or indirectly, provide access and furnish information
concerning its business, properties or assets to any corporation, partnership,
person or other entity or group (a "Third Party Bidder") pursuant to appropriate
confidentiality agreements, and may, subject to an obligation to notify Huntsman
thereof and of the material terms of any Third Party Bidder Acquisition
Proposal, including a copy thereof, negotiate and participate in discussions and
negotiations with such a Third Party Bidder concerning a Superior Proposal (i)
if such Third Party Bidder without any solicitation, initiation, encouragement,
discussion or negotiation, directly or indirectly, by or with the Company or its
Representatives, has submitted a bona fide written proposal to the Board
relating to any such transaction, (ii) if, in the opinion of the Board, after
receipt of advice from independent legal counsel to the Company, the failure to
provide such information or access or to engage in such discussions or
negotiations would result in a breach of their fiduciary duties to the Company's
stockholders under applicable law and (iii) if such Third Party Bidder executes
a confidentiality agreement in reasonably customary form; in such case, nothing
shall prohibit the Company or its Board of Directors from taking and disclosing
to the Company's stockholders a position with respect to a tender offer by a
third party pursuant to Rules 14d-9 and 14e-2(a) promulgated under the Exchange
Act or from making such disclosure to the Company's stockholders which, in the
judgment of the Board of Directors with the advice of independent legal counsel,
may be required under applicable law. Pursuant to the Merger Agreement, Huntsman
will have the right to revise the terms of the Merger Agreement such that the
Merger Agreement contains terms which are identical in all material respects to
those of a Superior Proposal (defined below), and, in such event, Huntsman and
the Company will so amend the Merger Agreement and, subject to the terms and
conditions of the Merger Agreement as so amended, consummate the transactions
contemplated thereby. In the Merger Agreement, the term "Superior Proposal"
means any Acquisition Proposal which a majority of the members of the Company's
Board of Directors determines, in good faith and after receipt of the advice of
outside financial advisors, (i) is more favorable to the holders of Common Stock
than the transactions contemplated by the Merger Agreement and (ii) is not
subject to any financing condition.
 
                                       36
<PAGE>   43
 
     Access to Information. Under the Merger Agreement, prior to the Effective
Time the Company will (and will cause each of its Subsidiaries to) afford to
Huntsman and its representatives reasonable access to the EMC Members and to all
of the Company's and its Subsidiaries' books and records and, during such
period, furnish promptly to Huntsman (i) a copy of each report and other
document filed or received by it during such period pursuant to the federal
securities laws and (ii) such other information as Huntsman may reasonably
request. The Merger Agreement provides that, notwithstanding any of the
foregoing, prior to the Effective Time no access to or disclosure of technical
information relating to the FPO plant or processes will be given to Huntsman or
its Affiliates.
 
     Further Action. Each of the parties to the Merger Agreement agreed to use
its reasonable best efforts to take all action and to do all things necessary
under applicable laws and regulations to consummate the transactions
contemplated by the Merger Agreement. Without limiting the generality of the
foregoing, Huntsman and the Company agreed to take or cause to be taken the
following actions: (i) provide promptly to Governmental Entities with regulatory
jurisdiction over enforcement of any applicable antitrust laws ("Government
Antitrust Entity") information and documents requested by any Government
Antitrust Entity or necessary, proper or advisable to permit consummation of the
Merger; (ii) without in any way limiting the immediately preceding clause (i),
file any Notification and Report Form and related material required under the
HSR Act as soon as practicable, and thereafter use its reasonable efforts to
certify as soon as practicable its substantial compliance with any requests for
additional information or documentary material that may be made under the HSR
Act; (iii) the proffer by Huntsman of its willingness to (A) sell or otherwise
dispose of, or hold separate and agree to sell or otherwise dispose of, such
assets, categories of assets or businesses of the Company or Huntsman or
either's respective Subsidiaries, (B) terminate such existing relationships and
contractual rights and obligations (other than a termination that would result
in a breach of a contractual obligation to a third party) and (C) amend or
terminate such existing licenses or other intellectual property agreements
(other than a termination that would result in a breach of a license or
intellectual property agreement with a third party) and to enter into such new
licenses or other intellectual property agreements (and, in each case, to enter
into agreements with the relevant Government Antitrust Entity giving effect
thereto) in each case with respect to the foregoing clauses (A), (B) or (C) if
such action is necessary or reasonably advisable; and (iv) Huntsman will take
promptly, in the event that any permanent or preliminary injunction or other
order is entered or becomes reasonably foreseeable to be entered in any
proceeding that would make consummation of the Merger in accordance with the
terms of the Merger Agreement unlawful or that would prevent or delay
consummation of the Merger or the other transactions contemplated by the Merger
Agreement, any and all steps (including the appeal thereof, the posting of a
bond or the taking of the steps contemplated by clause (iii) hereinabove)
necessary to vacate, modify or suspend such injunction or order so as to permit
such consummation on a schedule as close as possible to that contemplated by the
Merger Agreement. The Company and Huntsman filed their respective Notification
and Report Forms and related materials required under the HSR Act on June 13,
1997, commencing a thirty-day waiting period under the HSR Act. The FTC granted
early termination of the statutory waiting period effective July 3, 1997. See
"The Merger -- Regulatory Approvals."
 
     Employee Benefits. Pursuant to the Merger Agreement, on and after the
Effective Time, generally Huntsman will, and will cause its Affiliates to,
provide on an uninterrupted basis employee benefits for non-bargaining unit
employees of the Company as of the Effective Time (the "Company Employees") that
are, in the aggregate for each such employee, no less favorable than (i) the
employee benefits they were provided immediately prior to the Effective Time or,
at Huntsman's option, (ii) in the case of employees of the Company's Rexene
Products Division and non-Division Company Employees, the employee benefits
provided to similarly situated employees of Huntsman and its Affiliates
(including Huntsman Packaging Corporation), and, in the case of employees of the
Company's CT Films Division, the employee benefits provided to similarly
situated employees of Huntsman Packaging Corporation.
 
     Rights Plan. Pursuant to the Merger Agreement, the Company agreed to enter
into an amendment to the Rights Agreement, dated as of January 26, 1993, as
amended, between the Company and American Stock Transfer & Trust Company (the
"Rights Agreement") providing that, conditioned upon and effective immediately
prior to the Merger, the Rights will terminate and be cancelled without the
payment of any
 
                                       37
<PAGE>   44
 
consideration therefor. The Company agreed that it will not amend the term
"Acquiring Person" as such term is defined in the Rights Agreement.
 
     Notification of Certain Matters. The Company will give prompt notice to
Huntsman and Huntsman will give prompt notice to the Company, of (i) the
occurrence or non-occurrence of any event which would cause any representation
or warranty contained in the Merger Agreement to be untrue or inaccurate in any
material respect at or prior to the Effective Time, (ii) any material failure of
the Company, Huntsman or Sub, as the case may be, to comply with or satisfy any
covenant, condition or agreement to be complied with or satisfied by it under
the Merger Agreement and (iii) the commencement or, to the best of their
knowledge, the threat, of any action, suit, claim, investigation or proceeding
which relates to the Merger Agreement or the transactions contemplated thereby.
 
     Directors' and Officers' Insurance and Indemnification. The Merger
Agreement provides that, following the Effective Time, Huntsman will (or will
cause the Company and its subsidiaries to) indemnify each person who is as of
the date of the Merger Agreement, or has been at any time prior to the date of
the Merger Agreement, an employee, agent, director or officer of the Company or
any of its subsidiaries to the same extent and in the same manner as is now
provided in the respective certificates of incorporation or by-laws of the
Company and such subsidiaries or otherwise in effect on the date of the Merger
Agreement, with respect to any claim, liability, loss, damage, cost or expense,
whenever asserted or claimed, based in whole or in part on, or arising in whole
or in part out of, any matter existing or occurring at or prior to the Effective
Time, including, without limitation, matters arising out of or pertaining to the
Merger or the Merger Agreement.
 
     In addition, the Merger Agreement provides that Huntsman will, or will
cause the Company to, maintain in effect for not less than four years after the
Effective Time policies of directors' and officers' liability insurance
equivalent in all material respects to those maintained by or on behalf of the
Company and its subsidiaries on the date of the Merger Agreement (and having the
same coverage and containing terms and conditions that are no less advantageous
to the persons currently covered by such policies) with respect to matters
existing or occurring at or prior to the Effective Time; provided, however, that
if the aggregate annual premiums for such insurance at any time during such
period would exceed 200% of the premiums paid by the Company and its
subsidiaries for such insurance for the 12 calendar months immediately preceding
the date of the Merger Agreement, then Huntsman will cause the Company to
provide the maximum coverage then available at an annual premium equal to 200%
of the aggregate premiums paid during such 12 month period.
 
     Treatment of Public Indebtedness. Under the Merger Agreement, the Company
will cooperate with Huntsman in connection with (i) complying with the
applicable provisions of the Indenture, which require the Company to deliver
certain notices, legal opinions and other documents to the Indenture Trustee and
holders of the Company's outstanding public debt in connection with the Merger,
and (ii) conferring with the Indenture Trustee concerning such matters as
Huntsman shall specify.
 
     Existing Credit Documents. Pursuant to the Merger Agreement, the Company
will use reasonable efforts to (i) assist Huntsman to negotiate, and (ii) to
enter into, an arrangement with The Bank of Nova Scotia and the other lenders
party to the Credit Agreement, dated as of May 8, 1997, and with the financial
institutions and other parties to the Participation and Credit Agreement dated
as of May 8, 1997, which arrangements will permit the Company to terminate, on
and as of the Closing Date, such agreements and all related loan and lease
documentation (collectively, the "Existing Credit Documents"), upon payment in
full of all obligations of the Company thereunder, without any requirement that
the Company deliver irrevocable prior notices of termination under the Existing
Credit Documents or to make any payment with respect to the Existing Credit
Documents except upon the occurrence of the Merger.
 
     Huntsman Undertaking. Huntsman agreed in the Merger Agreement that it will
be responsible for and will cause Sub to perform all of its obligations under
the Merger Agreement in a timely manner.
 
CONDITIONS TO THE MERGER
 
     The respective obligations of the Company, Huntsman and Sub to consummate
the Merger are subject to the following conditions: (a) the Merger Agreement
shall have been approved and adopted by the
 
                                       38
<PAGE>   45
 
stockholders of the Company in accordance with the DGCL; (b) no Governmental
Entity shall have issued any order, and there shall not be any statute, rule,
decree or regulation restraining, prohibiting or making illegal the consummation
of the Merger; and (c) any waiting period applicable under the HSR Act shall
have expired or been terminated.
 
     The obligation of the Company to effect the Merger is also subject to the
following conditions: (a) the representations and warranties of Huntsman and Sub
contained in the Merger Agreement shall be true and correct in all material
respects both when made and (except for those representations and warranties
that address matters only as of a particular date which need only be true and
accurate as of such date) as of the Effective Time after giving effect to the
Merger as if made at and as of such time; and (b) each of Huntsman and Sub shall
have performed in all material respects its obligations under the Merger
Agreement required to be performed by it at or prior to the Effective Time
pursuant to the terms thereof.
 
     The obligations of Huntsman and Sub to effect the Merger are also subject
to the following conditions: (a) the representations and warranties of the
Company contained in the Merger Agreement shall be true and correct in all
material respects both when made and (except for those representations and
warranties that address matters only as of a particular date which need only be
true and accurate as of such date) as of the Effective Time after giving effect
to the Merger as if made at and as of such time; (b) the Company shall have
performed in all material respects each of its obligations under the Merger
Agreement required to be performed by it at or prior to the Effective Time
pursuant to the terms thereof; and (c) since March 31, 1997, the Company and its
Subsidiaries, taken as a whole, shall not have experienced events, changes or
effects, the effect of which, on an overall basis, would have, or, in the
written opinion of an independent investment banking firm of national stature,
would be likely to have, a Material Adverse Effect, other than resulting from
any matter disclosed in the Company SEC Documents filed prior to June 9, 1997 or
previously disclosed in writing to Huntsman.
 
TERMINATION OF THE MERGER AGREEMENT
 
     Termination. The Merger Agreement may be terminated at any time prior to
the Effective Time, whether before or after stockholder approval thereof: (a) by
the mutual consent of Huntsman and the Company; (b) by either the Company or
Huntsman: (i) if the Merger has not been consummated on or prior to October 31,
1997; except that no party may terminate the Merger Agreement for this reason if
such party's failure to fulfill any obligation under the Merger Agreement has
been the cause of, or resulted in, the failure of the Merger to occur by such
date; or (ii) if the stockholders of the Company fail to approve and adopt the
Merger Agreement at the Special Meeting (including any postponement or
adjournment thereof); or (iii) if any Governmental Entity shall have issued a
statute, order, decree or regulation or taken any other action, in each case
permanently restraining or enjoining the consummation of the transactions
contemplated by the Merger Agreement and such statute, order, decree, regulation
or other action shall have become final and non-appealable; (c) by the Board:
(i) if the Board shall have (x) withdrawn, or modified or changed in a manner
adverse to Huntsman or Sub, its approval or recommendation of the Merger
Agreement in order to approve and permit the Company to execute a definitive
agreement relating to an Acquisition Proposal which is a Superior Proposal, and
(y) determined in good faith, after receipt of advice from independent legal
counsel to the Company, that the failure to take such action as set forth in the
preceding clause (x) would result in a breach of the Board's fiduciary duties
under applicable law; except that the Company shall have given Huntsman three
days' written notice of any such termination and prior to such termination the
Company shall have paid Huntsman a fee as described below under "--Fees and
Expenses"; or (ii) if Huntsman or Sub materially breaches or fails in any
material respect to perform or comply with any of its covenants and agreements
contained in the Merger Agreement or breaches its representations and warranties
in any material respect, except that if any such breach is curable through the
exercise of the breaching party's reasonable best efforts and for so long as
such breaching party is attempting to cure the breach for a period not to exceed
20 days, the Company may not terminate the Merger Agreement because of such
breach; (d) by the Board of Directors of Huntsman: (i) if the Company materially
breaches or fails in any material respect to perform or comply with any of its
covenants and agreements contained in the Merger Agreement or breaches its
representations and warranties in any material respect, except that if any such
breach is curable through the
 
                                       39
<PAGE>   46
 
exercise of the Company's reasonable best efforts and for so long as the Company
is attempting to cure the breach for a period not to exceed 20 days, the Board
of Directors of Huntsman may not terminate the Merger Agreement because of such
breach; or (ii) if (A) the Board shall have withdrawn, or modified or changed in
a manner adverse to Huntsman or Sub its approval or recommendation of the Merger
Agreement or shall have recommended a Superior Proposal, or shall have executed
an agreement in principle (or similar agreement) or definitive agreement
providing for an Acquisition Proposal or other business combination with a
Person other than Huntsman, Sub or their Affiliates (or the Board resolves to do
any of the foregoing), or (B) any Person or "group" (as that term is defined in
Section 13(d)(3) of the Exchange Act), other than Huntsman or its Affiliates or
any group of which any of them is a member, shall have filed a statement on
Schedule 13D (or an amendment thereto) disclosing beneficial ownership
(determined pursuant to rule 13d-3 promulgated under the Exchange Act) of more
than 15% of any class or series of capital stock of the Company, through the
acquisition of stock, the formation of a group or otherwise.
 
     Effect of Termination. In the event the Merger Agreement is terminated as
provided above, written notice thereof will immediately be given to the other
parties specifying the provision of the Merger Agreement under which such
termination is made, and the Merger Agreement will immediately terminate and
there will be no liability on the part of Huntsman, Sub or the Company or their
respective directors or officers. Without limiting the above, Huntsman, Sub and
the Company expressly agreed that the sole remedy for any breach of the Merger
Agreement shall be the termination rights described above in the section "-
Termination" and any fee described below under "Fees and Expenses", and that in
the event of any such breach, the breaching party will have no liability
whatsoever (including, without limitation, liability for actual, direct,
indirect, consequential (including lost profits), punitive, exemplary or special
damages), other than the obligation to pay any fee required to be paid pursuant
to the Merger Agreement. In the Merger Agreement, the parties agreed that any
such fee constitutes liquidated damages and not a penalty. No party will be
obligated to pay more than one such fee, but if two fees under differing
provisions of the Merger Agreement would otherwise be payable by a party (at the
same time or at different times) then such party shall be obligated to pay the
highest fee payable. The parties to the Merger Agreement agreed that they are
relinquishing any rights they may otherwise have to specific performance of the
transactions therein contemplated.
 
FEES AND EXPENSES
 
     Except as otherwise contemplated by the Merger Agreement, all costs and
expenses incurred in connection with the Merger Agreement will be paid by the
party incurring such expenses.
 
     If the Merger Agreement is terminated (A) by the Company because the Board
shall have (x) withdrawn, or modified or changed in a manner adverse to Huntsman
or Sub, its approval or recommendation of the Merger Agreement in order to
approve and permit the Company to execute a definitive agreement relating to an
Acquisition Proposal which is a Superior Proposal, and (y) determined in good
faith, after receipt of advice from independent legal counsel to the Company,
that the failure to take such action as set forth in the preceding clause (x)
would result in a breach of the Board's fiduciary duties under applicable law,
or (B) by Huntsman because the Board shall have withdrawn, or modified or
changed in a manner adverse to Huntsman or Sub its approval or recommendation of
the Merger Agreement or shall have recommended a Superior Proposal, or shall
have executed an agreement in principle (or similar agreement) or definitive
agreement providing for an Acquisition Proposal or other business combination
with a Person other than Huntsman, Sub or their Affiliates (or the Board
resolves to do any of the foregoing), the Company will immediately pay to
Huntsman an amount equal to the product of (x) 50c and (y) the number of
outstanding shares of Common Stock as of the date of the Merger Agreement. If
the Merger Agreement is terminated by Huntsman because the Company materially
breaches or fails in any material respect to perform or comply with any of its
covenants and agreements contained in the Merger Agreement or breaches its
representations and warranties in any material respect, the Company will
immediately pay to Huntsman $15 million, unless such termination is due to a
breach of the Company's representations and warranties that relates to an event
which occurs or arises after the date of the Merger Agreement and (x) does not
relate to an event which occurred or arose on or prior to the date of the Merger
Agreement and (y) was not caused, directly or indirectly, by the action or
inaction of the Company or any of its Affiliates.
 
                                       40
<PAGE>   47
 
     If the Merger Agreement is terminated: (i) by either the Company or
Huntsman because the stockholders of the Company fail to approve and adopt the
Merger Agreement at the Special Meeting (including any postponement or
adjournment thereof); (ii) by either the Company or Huntsman because the Merger
has not been consummated on or prior to October 31, 1997 and the Special Meeting
has not been held or has been postponed or adjourned until after October 31,
1997 (so long as the failure to hold the meeting, or such postponement or
adjournment of the meeting, is not due to Huntsman's breach of its covenants or
representations and warranties set forth in the Merger Agreement); or (iii) by
Huntsman because any Person or "group" (as that term is defined in Section
13(d)(3) of the Exchange Act), other than Huntsman or its Affiliates or any
group of which any of them is a member, shall have filed a statement on Schedule
13D (or an amendment thereto) disclosing beneficial ownership (determined
pursuant to rule 13d-3 promulgated under the Exchange Act) of more than 15% of
any class or series of capital stock of the Company, through the acquisition of
stock, the formation of a group or otherwise, and within nine months of such
termination set forth in the preceding clauses (i), (ii), or (iii), a Person,
other than Huntsman or any of its Affiliates: (I) shall acquire or beneficially
own a majority of the then outstanding shares of Common Stock; (II) shall enter
into a definitive agreement with the Company or any of its Affiliates with
respect to an Acquisition Proposal; or (III) shall consummate an Acquisition
Proposal with the Company or any of its Affiliates, then the Company will pay to
Huntsman in immediately available funds an amount equal to the product of (x)
50c and (y) the number of outstanding shares of Common Stock as of the date of
the Merger Agreement. For purposes of clauses (c)(II) and (c)(III) above, the
term "Acquisition Proposal" does not include a sale of assets (in one or more
transactions) constituting less than a majority of the consolidated gross asset
value of the Company and its Subsidiaries (a "Minority Asset Sale"), unless such
a Minority Asset Sale constitutes a sale of all or substantially all of the
assets of the Rexene Products Division or the CT Film Division, in which event
such a Minority Asset Sale of all or substantially all of the assets of either
such division shall constitute an Acquisition Proposal for purposes of clauses
(c)(II) and (c)(III).
 
     If the Merger Agreement is terminated by the Company because Huntsman or
Sub materially breaches or fails in any material respect to perform or comply
with any of its covenants and agreements contained in the Merger Agreement or
breaches its representations and warranties in any material respect, then
Huntsman will immediately pay to the Company $15 million, unless such
termination is due to a breach of Huntsman's representations and warranties that
relates to an event which occurs or arises after the date of the Merger
Agreement and (x) does not relate to an event which occurred or arose on or
prior to the date of the Merger Agreement and (y) was not caused, directly or
indirectly, by the action or inaction of Huntsman or any of its Affiliates. If
the Merger Agreement is terminated by the Company because the Merger has not
been consummated on or prior to October 31, 1997, and as of the date of such
termination all of the conditions to Huntsman's obligation to consummate the
Merger set forth in the Merger Agreement shall have been fulfilled, then
Huntsman will immediately pay to the Company $15 million.
 
AMENDMENT; WAIVER
 
     The Merger Agreement may be amended by the parties thereto, by action taken
or authorized by their respective Boards of Directors, at any time before or
after approval by the stockholders of the Company of the matters presented in
connection with the Merger, but after any such approval no amendment will be
made without the approval of such stockholders if such amendment changes the
Merger Consideration or alters or changes any of the other terms or conditions
of the Merger Agreement if such alteration or change would materially adversely
affect the rights of such stockholders. The Merger Agreement may not be amended
except by an instrument in writing signed on behalf of each of the parties
thereto. At any time prior to the Effective Time, the parties may (i) extend the
time for the performance of any of the obligations or other acts of the other
parties to the Merger Agreement, (ii) waive any inaccuracies in the
representations and warranties of the other parties contained in the Merger
Agreement or in any document, certificate or writing delivered pursuant thereto
or (iii) waive compliance with any of the agreements or conditions of the other
parties thereto contained therein. Any agreement on the part of any party to any
such extension or waiver shall be valid only if set forth in an instrument in
writing signed on behalf of such party.
 
                                       41
<PAGE>   48
 
                                 THE COMPANIES
 
THE COMPANY
 
     The Company manufactures and markets a wide variety of products through its
two operating divisions, Rexene Products Company division and the CT Film
division. The products range from value-added specialty products, such as
customized plastic films, to commodity petrochemicals, such as styrene. These
products are sold to a diverse customer base and are used in a wide variety of
industrial and consumer-related applications. The Company's principal products
are polyethylene, polypropylene, REXtac(R) amorphous polyalphaolefin and
REXflex(R) flexible polyolefin polymers, styrene and plastic film. In addition,
the Company manufactures, primarily for its own consumption, ethylene and
propylene, the two basic chemical building blocks of the Company's principal
products. The Company's principal executive offices are located at 5005 LBJ
Freeway, Dallas, Texas 75244 and its telephone number is (972) 450-9000.
 
     For a more detailed description of the business and properties of the
Company, see the descriptions thereof set forth in the Company's Annual Report
on Form 10-K for the year ended December 31, 1996, which is incorporated herein
by reference. See "Incorporation of Certain Documents by Reference."
 
HUNTSMAN
 
     Huntsman, with headquarters in Salt Lake City, Utah, is one of the largest
privately-held chemical companies in North America and an integrated producer of
commodity and specialty chemicals and polymers. Huntsman's business is comprised
of five product groups: (i) base chemicals, (ii) intermediate chemicals, (iii)
performance products, (iv) polymers and resins and (v) packaging products.
Huntsman is the largest North American producer of polystyrene, butadiene,
maleic anhydride and certain specialty amines and carbonates. In addition,
Huntsman is among the five largest North American producers of styrene,
propylene oxide, polypropylene, expandable polystyrene, methyl tertiary butyl
ether, cyclohexane, ethylene oxide, ethanolamines and linear alkylbenzene.
Huntsman's principal executive offices are located at 500 Huntsman Way, Salt
Lake City, Utah 84108 and its telephone number is (801) 584-5700.
 
     Sub's principal executive offices are located at 500 Huntsman Way, Salt
Lake City, Utah 84108 and its telephone number is (801) 584-5700.
 
                                       42
<PAGE>   49
 
                            SELECTED FINANCIAL DATA
 
     The following table sets forth selected financial data for the Company for
the periods indicated. The data set forth below should be read in conjunction
with the Company's Consolidated Financial Statements and Notes thereto included
in the Company's Annual Report on Form 10-K for the year ended December 31, 1996
and the Company's Quarterly Report on Form 10-Q for the quarter ended March 31,
1997, which are incorporated herein by reference. See "Incorporation of Certain
Documents by Reference."
 
<TABLE>
<CAPTION>
                                                                                                 THREE MONTHS    NINE MONTHS
                                  THREE MONTHS                                                      ENDED           ENDED
                                 ENDED MARCH 31,         TWELVE MONTHS ENDED DECEMBER 31,        DECEMBER 31,   SEPTEMBER 30,
                               -------------------   -----------------------------------------   ------------   -------------
                                 1997       1996       1996       1995       1994       1993         1992        1992(1)(2)
                               --------   --------   --------   --------   --------   --------   ------------   -------------
                                                           (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                            <C>        <C>        <C>        <C>        <C>        <C>        <C>            <C>
CONSOLIDATED STATEMENTS OF
  OPERATIONS DATA:
Net sales....................  $163,716   $139,687   $587,761   $615,238   $537,957   $429,353     $ 98,854       $316,106
Operating income.............    16,180     14,028     63,436    125,146     75,085     14,504        1,418          9,392
Income (loss) before
  extraordinary gain
  (loss).....................     6,114      6,470     29,731     65,443     21,504    (25,243)      (6,528)       (31,476)
Extraordinary gain (loss),
  net of income taxes........        --         --         --         --    (25,831)        --           --        123,672
                               --------   --------   --------   --------   --------   --------     --------       --------
Net income (loss)............  $  6,114   $  6,470   $ 29,731   $ 65,443   $ (4,327)  $(25,243)    $ (6,528)      $ 92,196
                               ========   ========   ========   ========   ========   ========     ========       ========
Weighted average shares
  outstanding................    19,272     19,126     19,168     19,126     11,663     10,501       10,501
                               ========   ========   ========   ========   ========   ========     ========
Income (loss) per share(2):
  Income (loss) before
    extraordinary loss.......  $   0.32   $   0.34   $   1.55   $   3.42   $   1.84   $  (2.40)    $  (0.62)
  Extraordinary loss.........        --         --         --         --      (2.21)        --           --
                               --------   --------   --------   --------   --------   --------     --------
  Net income (loss) per
    share....................  $   0.32   $   0.34   $   1.55   $   3.42   $  (0.37)  $  (2.40)    $  (0.62)
                               ========   ========   ========   ========   ========   ========     ========
Dividends per share..........  $    .04   $    .04   $    .16   $    .04   $     --   $     --     $     --
                               ========   ========   ========   ========   ========   ========     ========
</TABLE>
 
   
<TABLE>
<CAPTION>
                                  AT MARCH 31,                           AT DECEMBER 31,
                               -------------------   --------------------------------------------------------
                                 1997       1996       1996       1995       1994       1993         1992
                               --------   --------   --------   --------   --------   --------   ------------
<S>                            <C>        <C>        <C>        <C>        <C>        <C>        <C>            <C>
CONSOLIDATED BALANCE SHEET
  DATA:
Working Capital..............  $127,439   $101,496   $ 92,089   $108,416   $140,039   $109,381     $104,824
Total assets.................   625,815    500,571    597,542    520,591    506,954    434,307      423,591
Long-term debt and other
  noncurrent liabilities.....   393,365    295,266    350,383    296,080    366,766    397,091      367,327
  Stockholders' equity
    (deficit)................   173,419    145,653    169,051    140,151     74,876     (5,137)      20,106
</TABLE>
    
 
- ---------------
 
(1) In connection with a reorganization under Chapter 11 of the United States
    Bankruptcy Code, the Company adopted as of September 30, 1992, the
    Reorganization SOP. The Company's basis of accounting for financial
    reporting purposes changed as a result of adopting the Reorganization SOP.
    Accordingly, the results of operations after September 30, 1992 are not
    comparable to results of operations prior to such date, and the results of
    operations for the nine months ended September 30, 1992 and the three months
    ended December 31, 1992 have not been aggregated.
 
(2) Per share data for the pre-emergence period is not presented because such
    information is not comparable to the similar information for the
    post-emergence periods.
 
                                       43
<PAGE>   50
 
   
     On July 15, 1997, the Company announced results for the second quarter of
1997. Set forth below is a summary of the Company's results for the three- and
six-month periods ended June 30, 1997 and, for comparison purposes, the
Company's actual results for the three- and six-month periods ended June 30,
1996.
    
 
   
<TABLE>
<CAPTION>
                                    THREE MONTHS ENDED JUNE 30      SIX MONTHS ENDED JUNE 30
                                    --------------------------      ------------------------
                                       1997            1996           1997           1996
                                    ----------      ----------      ---------      ---------
                                             (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                                           UNAUDITED
<S>                                 <C>             <C>             <C>            <C>
Net Sales.........................    $151,937        $146,462       $315,653       $286,149
Operating Income..................      21,976          15,646         38,156         29,674
Interest expense, net.............       5,896           3,832         11,079          7,430
                                      --------        --------       --------       --------
Income before extraordinary
  item............................       8,915           7,492         15,029         13,962
Extraordinary item, net of tax....        (694)             --           (694)            --
                                      --------        --------       --------       --------
Net Income........................       8,221           7,492         14,335         13,962
                                      ========        ========       ========       ========
Income per share before
  extraordinary item..............    $   0.46        $   0.39       $   0.78       $   0.73
Extraordinary item per share, net
  of tax(1).......................       (0.04)             --          (0.04)            --
                                      --------        --------       --------       --------
Net Income per share..............    $   0.42        $   0.39       $   0.74       $   0.73
                                      ========        ========       ========       ========
Weighted average shares...........      19,303          19,139         19,289         19,132
                                      ========        ========       ========       ========
</TABLE>
    
 
- ---------------
 
   
(1) Reflects the accelerated amortization of previously incurred debt financing
    fees as part of a new credit agreement completed in May 1997.
    
 
   
     Net income per share for the three and six months ended June 30, 1997
reflects a charge for costs associated with the Company's proxy solicitation
relating to the Wyser-Pratte Proposals of four cents and eight cents per share,
respectively.
    
 
   
     Selling prices for polyethylene and CT Film were higher in the second
quarter of 1997 as compared with the second quarter of 1996 due to strong
demand. Selling prices for all of the Company's other product lines were stable
except for styrene, which experienced lower prices in the second quarter. Sales
volumes for all of the Company's major product lines decreased slightly during
the second quarter of 1997 as compared with the second quarter of 1996. Selling
prices for all of the Company's major product lines except styrene also
increased for the six months ended June 30, 1997 as compared with the six months
ended June 30, 1996.
    
 
                                       44
<PAGE>   51
 
                         MARKET PRICES OF COMMON STOCK
 
     The Common Stock is listed and traded on the NYSE under the symbol "RXN."
The following table sets forth the high and low sales prices per share of Common
Stock, as reported on the NYSE Composite Tape for the periods indicated.
 
   
<TABLE>
<CAPTION>
                                                              HIGH      LOW
                                                              ----      ---
<S>                                                           <C>       <C>
Year ended December 31, 1995
  First Quarter.............................................  $13 3/8    $ 9
  Second Quarter............................................   14 1/4     10 1/4
  Third Quarter.............................................   15 5/8     11 1/4
  Fourth Quarter............................................   12 1/4      8 7/8
Year ended December 31, 1996
  First Quarter.............................................  $14 1/4    $ 9 1/8
  Second Quarter............................................   13 7/8      9 7/8
  Third Quarter.............................................   13 7/8      9
  Fourth Quarter............................................   14 1/2     11 3/4
Year ended December 31, 1997
  First Quarter.............................................  $14 1/2    $13
  Second Quarter............................................   15 5/8     12 7/8
  Third Quarter (through July 23, 1997).....................   15 13/16   15 1/2
</TABLE>
    
 
   
     On July 18, 1996, the trading day preceding the date on which Huntsman's
interest in acquiring the Company was first publicly disclosed, the high and low
sales prices of the Common Stock, as reported on the NYSE Composite Tape, were
$9 1/4 and $9 1/8 per share, respectively. On June 6, 1997, the last trading day
prior to the public announcement of the execution of the Merger Agreement, the
high and low sales prices of the Common Stock, as reported on the NYSE Composite
Tape, were $15 and $14 7/8 per share, respectively. On July 23, 1997, the high
and low sales prices of the Common Stock, as reported on the NYSE Composite
Tape, were $15 13/16 and $15 3/4 per share, respectively.
    
 
     Stockholders are urged to obtain current market quotations for the Common
Stock prior to making any decision with respect to the Merger.
 
   
     As of July 23, 1997, there were 18,848,867 shares of Common Stock
outstanding and 597 record holders of Common Stock.
    
 
     The Company did not declare or pay cash dividends during the first three
quarters of 1995. Commencing in December 1995, the Board has declared quarterly
cash dividends of $0.04 per share. The Merger Agreement prohibits, without the
consent of Huntsman, the Company from declaring and paying cash dividends on the
Common Stock in excess of $.04 per share on a quarterly basis.
 
                                       45
<PAGE>   52
 
                CERTAIN PROJECTIONS OF FUTURE OPERATING RESULTS
 
     The Company does not as a matter of course make public forecasts as to its
future financial performance and condition. However, in connection with its
discussions with Huntsman and the other potential acquirors of the Company, the
Company furnished Huntsman and such other potential acquirors with certain data
relating to projected future operating results, cash flows and financial
condition. The projections set forth below were included in the data provided by
the Company to Huntsman and such other potential acquirors. These projections
were not prepared in compliance with the published guidelines of the American
Institute of Certified Public Accountants or the Commission regarding
projections or financial forecasts and are included herein only because such
information was provided to Huntsman and such other potential acquirors. These
projections constitute forward-looking statements and were based upon numerous
assumptions, including, without limitation, the assumption that the Company
continues to implement its long-term strategic capital improvements and
expansion programs. Although the Company believes that such assumptions were
reasonable when made, such assumptions are inherently subject to significant
uncertainties and contingencies which are difficult or impossible to predict and
are beyond the Company's control. Accordingly, there can be no assurance, and no
representation or warranty is made, that the actual results of operations and
financial position achieved by the Company would not vary materially from the
results of operations and financial condition set forth in these projections.
For a list of important factors that, in the view of the Company, could cause
actual results to differ materially from those set forth in these projections,
see "Forward Looking Statements." The projections set forth below have not been
adjusted to reflect the effects of the Merger.
 
STATEMENT OF OPERATIONS DATA
 
<TABLE>
<CAPTION>
                                             YEAR ENDED DECEMBER 31,
                       --------------------------------------------------------------------
                       1997     1998     1999     2000     2001     2002     2003     2004
                       -----    -----    -----    -----    -----    -----    -----    -----
                                   (DOLLARS IN MILLIONS, EXCEPT PER SHARE DATA)
<S>                    <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>
Net sales............  $ 629    $ 576    $ 735    $ 809    $ 816    $ 923    $ 961    $ 975
Operating income.....     61       67      124      163      162      243      256      239
Net income...........     23       29       60       87       90      144      157      150
Earnings per
  share..............   1.20     1.54     3.12     4.55     4.70     7.51     8.19     7.80
</TABLE>
 
BALANCE SHEET DATA
 
<TABLE>
<CAPTION>
                                                AS OF DECEMBER 31,
                       --------------------------------------------------------------------
                       1997     1998     1999     2000     2001     2002     2003     2004
                       -----    -----    -----    -----    -----    -----    -----    -----
                                              (DOLLARS IN MILLIONS)
<S>                    <C>      <C>      <C>      <C>      <C>      <C>      <C>      <C>
Cash.................  $  .5    $   1    $  .8    $  16    $ 112    $ 244    $ 397    $ 369
Total debt...........    293      324      264      175      175      175      175        0
Stockholders'
  Equity.............    189      215      272      356      444      585      739      886
</TABLE>
 
     The projections set forth above were prepared by the Company in December
1996 in connection with the Company's annual profit planning process. Forecasts
of future financial performance and condition could differ materially from the
data set forth above if management were to prepare projections based upon
circumstances existing as of the date of this Proxy Statement. None of the
Company or Huntsman intend or have any duty or obligation to publicly disclose
updates or revisions to any of the projections set forth above to reflect
circumstances existing or developments occurring after the preparation of such
projections or to reflect the occurrence of unanticipated events. The Company's
independent accountants have not examined or compiled the foregoing
forward-looking statements and accordingly do not provide any assurance with
respect to such statements.
 
                                       46
<PAGE>   53
 
                    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL
                             OWNERS AND MANAGEMENT
 
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
 
   
     The following table sets forth, as of July 23, 1997, information with
respect to each person who was known by the Company (based upon a review of
schedules and reports filed with the Commission) to be the beneficial owner of
more than 5% of the Common Stock.
    
 
<TABLE>
<CAPTION>
                                                                     COMMON STOCK
                                                                  BENEFICIALLY OWNED
                                                              --------------------------
                                                               NUMBER OF      PERCENT OF
            NAME AND ADDRESS OF BENEFICIAL OWNER                 SHARES         CLASS
            ------------------------------------              ------------    ----------
<S>                                                           <C>             <C>
Guy P. Wyser-Pratte and Spear, Leeds & Kellogg..............   2,483,800(1)     13.2%
  c/o Guy P. Wyser-Pratte
  63 Wall Street
  New York, NY 10005
</TABLE>
 
- ---------------
 
(1) Based upon information reported in Amendment No. 2 to the Schedule 13D,
    dated March 14, 1997, filed by the Wyser-Pratte Group with the Commission.
    According to such Schedule, Wyser-Pratte has sole voting and investment
    power with respect to 1,369,700 shares of Common Stock beneficially owned by
    him and Spear Leeds has sole voting and investment power with respect to
    1,114,100 shares of Common Stock beneficially owned by it.
 
                                       47
<PAGE>   54
 
SECURITY OWNERSHIP OF MANAGEMENT
 
   
     The following table sets forth information with respect to the beneficial
ownership of the Common Stock as of July 23, 1997, by each director of the
Company, executive officers of the Company and all directors and executive
officers of the Company as a group.
    
 
   
<TABLE>
<CAPTION>
                                                                     COMMON STOCK
                                                                  BENEFICIALLY OWNED
                                                              --------------------------
                                                               NUMBER OF      PERCENT OF
                            NAME                              SHARES(1)(2)      CLASS
                            ----                              ------------    ----------
<S>                                                           <C>             <C>
DIRECTORS
Lavon N. Anderson...........................................      61,050(3)      *
James R. Ball...............................................       4,000         *
Harry B. Bartley, Jr........................................       4,000(4)      *
R. James Comeaux............................................       7,000         *
William B. Hewitt...........................................      29,000         *
Ilan Kaufthal...............................................      29,000         *
Jack E. Knott...............................................      54,000(5)      *
Charles E. O'Connell........................................       4,000         *
Richard C. Perry............................................     602,400(6)      3.1%
Andrew J. Smith.............................................     118,557         *
Stephen C. Swid.............................................      90,050         *
EXECUTIVE OFFICERS (EXCLUDING ANY DIRECTOR NAMED ABOVE)
Jonathan R. Wheeler.........................................      44,500         *
James M. Ruberto............................................      50,000         *
Bernard J. McNamee..........................................      42,000         *
Geff F. Perera..............................................      19,005         *
All current directors and executive officers as a group (15
  persons)..................................................   1,158,562         6.1%
</TABLE>
    
 
- ---------------
 
(*) Less than 1%
 
(1) All shares listed are directly held with sole voting and investment power
    unless otherwise indicated.
 
(2) Includes shares subject to stock options that would, except for the merger,
    be exercisable within 60 days of the date of this Proxy Statement by the
    following individuals in the following amounts: Dr. Anderson -- 59,250; Mr.
    Ball -- 2,000; Mr. Bartley -- 4,000; Mr. Comeaux -- 4,000; Mr. Hewitt --
    2,000; Mr. Kaufthal -- 2,000; Mr. Knott -- 50,000; Mr. O'Connell -- 4,000;
    Mr. Smith -- 92,000; Mr. Wheeler -- 44,000; Mr. Ruberto -- 50,000; Mr.
    McNamee -- 39,000; and Mr. Perera -- 19,005.
 
(3) Includes 100 shares owned by a corporation of which Dr. Anderson owns 50% of
    the outstanding stock and shares voting and investment power.
 
(4) Mr. Bartley donated 3,000 shares to charity on June 19, 1997.
 
(5) Includes 3,000 shares held by Mr. Knott's spouse in a custodial capacity
    under the Uniform Gifts to Minors Act.
 
(6) All shares are owned beneficially by Perry Corp. for the benefit of investor
    accounts managed and controlled by Perry Corp. As controlling stockholder of
    Perry Corp., Mr. Perry may be deemed a beneficial owner of all or a portion
    of such shares.
 
                                       48
<PAGE>   55
 
                             STOCKHOLDER PROPOSALS
 
     The Company will hold a 1997 Annual Meeting only if the Merger is not
consummated. In the event of such a meeting, in order to have been considered
for inclusion in the Company's proxy materials for the 1997 Annual Meeting of
Stockholders, stockholder proposals must have been received at the Company's
principal executive offices in Dallas, Texas no later than November 22, 1996.
 
                            INDEPENDENT ACCOUNTANTS
 
     The consolidated financial statements incorporated in this Proxy Statement
by reference to the Company's Annual Report on Form 10-K for the year ended
December 31, 1996 have been audited by Price Waterhouse LLP, independent
accountants, as stated in their report, which also is incorporated herein by
reference.
 
     Representatives of Price Waterhouse LLP will attend the Special Meeting and
will have an opportunity to make a statement and to respond to appropriate
questions from stockholders.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The following documents, which have been filed by the Company (File No.
1-9988) with the Commission under the Exchange Act, are incorporated herein by
reference:
 
     (a) The Company's Annual Report on Form 10-K for the year ended December
         31, 1996.
 
     (b) The Company's Quarterly Report on Form 10-Q for the quarter ended March
         31, 1997.
 
     (c) The Company's Current Report on Form 8-K, dated March 20, 1997, as
         amended by the Company's Current Report on Form 8-K/A, filed on March
         27, 1997.
 
     (d) The Company's Current Report on Form 8-K, dated June 18, 1997.
 
     All documents filed with the Commission by the Company pursuant to Section
13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date hereof and
prior to the date of the Special Meeting shall be deemed to be incorporated by
reference herein and to be a part hereof from the date any such document is
filed.
 
     Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes hereof to the extent that a statement contained herein (or in any
other subsequently filed document that also is or is deemed to be incorporated
by reference herein) modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part hereof. All information appearing in this Proxy Statement
is qualified in its entirety by the information and financial statements
(including the notes thereto) contained in the documents incorporated herein by
reference, except to the extent set forth in the immediately preceding sentence.
 
     THIS PROXY STATEMENT INCORPORATES DOCUMENTS BY REFERENCE THAT ARE NOT
PRESENTED HEREIN OR DELIVERED HEREWITH. THE COMPANY WILL PROVIDE WITHOUT CHARGE
TO EACH PERSON TO WHOM A COPY OF THIS PROXY STATEMENT IS DELIVERED, UPON THE
WRITTEN OR ORAL REQUEST OF SUCH PERSON, BY FIRST-CLASS MAIL OR OTHER EQUALLY
PROMPT MEANS WITHIN ONE BUSINESS DAY OF RECEIPT OF SUCH REQUEST, A COPY OF ANY
OR ALL OF THE DOCUMENTS THAT ARE INCORPORATED BY REFERENCE HEREIN (OTHER THAN
EXHIBITS TO SUCH DOCUMENTS THAT ARE NOT SPECIFICALLY INCORPORATED BY REFERENCE
HEREIN). REQUESTS SHOULD BE DIRECTED TO INVESTOR RELATIONS, REXENE CORPORATION,
5005 LBJ FREEWAY, DALLAS, TEXAS, 75244 (TELEPHONE NUMBER (972) 450-9000).
 
                                       49
<PAGE>   56
 
                                                                         ANNEX A
 
                                   AGREEMENT
 
                                      AND
 
                                 PLAN OF MERGER
 
                                  BY AND AMONG
 
                              HUNTSMAN CORPORATION
 
                        HUNTSMAN CENTENNIAL CORPORATION
 
                                      AND
 
                               REXENE CORPORATION
 
                                  June 9, 1997
 
                                       A-1
<PAGE>   57
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                              PAGE
                                                                              ----
<S>             <C>                                                           <C>
                                    ARTICLE I
 
                                    THE MERGER
Section 1.1     The Merger..................................................   A-6
Section 1.2     Effective Time..............................................   A-6
Section 1.3     Closing.....................................................   A-6
Section 1.4     Certificate of Incorporation; By-Laws.......................   A-6
Section 1.5     Directors and Officers of the Surviving Corporation.........   A-7
 
                                    ARTICLE II
 
                               CONVERSION OF SHARES
Section 2.1     Conversion of Common Stock..................................   A-7
Section 2.2     Exchange of Certificates....................................   A-7
Section 2.3     Company Option Plans........................................   A-8
Section 2.4     Dissenters' Rights..........................................   A-9
Section 2.5     Stockholders' Meeting.......................................   A-9
 
                                   ARTICLE III
 
                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY
Section 3.1     Organization................................................  A-10
Section 3.2     Capitalization..............................................  A-11
Section 3.3     Authorization; Validity of Agreement........................  A-11
Section 3.4     No Violations; Consents and Approvals.......................  A-12
Section 3.5     SEC Reports and Financial Statements........................  A-12
Section 3.6     Absence of Certain Changes..................................  A-13
Section 3.7     No Undisclosed Liabilities..................................  A-13
Section 3.8     Information in Proxy Statement..............................  A-13
Section 3.9     Employee Benefit Plans; ERISA...............................  A-13
Section 3.10    Litigation; Compliance with Law.............................  A-15
Section 3.11    Intellectual Property.......................................  A-15
Section 3.12    Company Agreements..........................................  A-16
Section 3.13    Taxes.......................................................  A-16
Section 3.14    Environmental Matters.......................................  A-17
Section 3.15    No Default..................................................  A-18
Section 3.16    Opinion of Financial Advisors...............................  A-19
Section 3.17    Brokers.....................................................  A-19
Section 3.18    Property....................................................  A-19
Section 3.19    Board Recommendations; Takeover Provisions..................  A-19
Section 3.20    Labor Matters...............................................  A-19
 
                                    ARTICLE IV
 
             REPRESENTATIONS AND WARRANTIES OF PARENT AND ACQUISITION
Section 4.1     Organization................................................  A-19
Section 4.2     Authorization; Validity of Agreement........................  A-20
Section 4.3     Consents and Approvals; No Violations.......................  A-20
Section 4.4     Information in Proxy Statement..............................  A-20
Section 4.5     Financing...................................................  A-20
</TABLE>
    
 
                                       A-2
<PAGE>   58
   
<TABLE>
<CAPTION>
                                                                              PAGE
                                                                              ----
<S>             <C>                                                           <C>
                                  ARTICLE V
                                      
                                  COVENANTS
Section 5.1     Interim Operations of the Company...........................  A-20
Section 5.2     No Solicitations............................................  A-23
Section 5.3     Access to Information.......................................  A-24
Section 5.4     Further Action; Reasonable Best Efforts.....................  A-24
Section 5.5     Employee Benefits...........................................  A-25
Section 5.6     Rights Plan.................................................  A-28
Section 5.7     Notification of Certain Matters.............................  A-28
Section 5.8     Directors' and Officers' Insurance and Indemnification......  A-29
Section 5.9     Treatment of Public Indebtedness............................  A-30
Section 5.10    Existing Credit Documents...................................  A-30
Section 5.11    Directors' Qualifying Shares................................  A-30
Section 5.12    Parent Undertaking..........................................  A-30
 
                                  ARTICLE VI
 
                                  CONDITIONS
                Conditions to Each Party's Obligation To Effect the
Section 6.1     Merger......................................................  A-30
                Conditions to the Obligation of the Company to Effect the
Section 6.2     Merger......................................................  A-30
                Conditions to Obligations of Parent and Acquisition to
Section 6.3     Effect the Merger...........................................  A-31
 
                                  ARTICLE VII
 
                                  TERMINATION
Section 7.1     Termination.................................................  A-31
Section 7.2     Effect of Termination.......................................  A-32
 
                                 ARTICLE VIII
 
                                 MISCELLANEOUS
Section 8.1     Fees and Expenses...........................................  A-33
Section 8.2     Amendment; Waiver...........................................  A-34
Section 8.3     Survival....................................................  A-34
Section 8.4     Notices.....................................................  A-34
Section 8.5     Interpretation..............................................  A-35
Section 8.6     Section Headings............................................  A-35
Section 8.7     Counterparts................................................  A-35
Section 8.8     Entire Agreement............................................  A-35
Section 8.9     Severability................................................  A-35
Section 8.10    Governing Law; Waiver of Jury Trial; Enforcement............  A-35
Section 8.11    Assignment..................................................  A-35
</TABLE>
    
 
                                       A-3
<PAGE>   59
 
                             TABLE OF DEFINED TERMS
   
<TABLE>
<CAPTION>
TERM                                                               SECTION
- ----                                                               -------
<S>                                                           <C>
Acquisition.................................................      Recitals
Acquisition Proposal........................................        5.2(a)
Affiliates..................................................           8.5
Assertion...................................................           5.8
Associates..................................................           8.5
Audits......................................................       3.13(b)
CAPEX Program...............................................           5.1
beneficial ownership........................................           8.5
Certificate of Merger.......................................           1.2
Certificates................................................        2.2(b)
Closing.....................................................           1.3
Closing Date................................................           1.3
Code........................................................        2.2(d)
Company.....................................................      Recitals
Company Agreements..........................................           3.4
Company Common Stock........................................           2.1
Company Employees...........................................        5.5(a)
Company Options.............................................           2.3
Company SEC Documents.......................................           3.5
Conflict Matter.............................................           5.8
DGCL........................................................      Recitals
Disclosure Schedule.........................................        3.2(b)
Dissenting Shares...........................................           2.4
Effective Time..............................................           1.2
EMC.........................................................        5.1(a)
EMC Member..................................................        5.1(a)
Environmental Claim.........................................    3.14(e)(i)
Environmental Laws..........................................   3.14(e)(ii)
ERISA.......................................................        3.9(a)
ERISA Affiliate.............................................        3.9(a)
ERISA Plans.................................................        3.9(a)
Exchange Act................................................           2.5
Existing Credit Documents...................................          5.10
</TABLE>
 
GAAP........................................................           3.5
Government Antitrust Entity.................................        5.4(a)
Governmental Entity.........................................           3.4
Hazardous Substance.........................................  3.14(e)(iii)
HSR Act.....................................................           3.4
Indemnified Liability.......................................           5.8
Indemnified Parties.........................................           5.8
Indemnified Party...........................................           5.8
Indemnitors.................................................           5.8
Intellectual Property.......................................          3.11
knowledge of the Company....................................           3.6
Liens.......................................................        3.2(b)
made available..............................................           8.5
Material Adverse Effect.....................................           3.1
Material Company Agreements.................................          3.12
Merger......................................................           1.1
 
                                       A-4
<PAGE>   60
<TABLE>
<CAPTION>
TERM                                                               SECTION
- ----                                                               -------
<S>                                                           <C>
Merger Consideration........................................        2.1(a)
Non-Key Employees...........................................        5.1(d)
Option Plans................................................           2.3
Orrex.......................................................           3.1
Orrex Governance Documents..................................           3.1
Parent......................................................      Recitals
Paying Agent................................................        2.2(a)
Payment Fund................................................        2.2(a)
PBGC........................................................        3.9(c)
Person......................................................           3.1
Plans.......................................................        3.9(a)
Preferred Stock.............................................        3.2(a)
Proxy Statement.............................................           2.5
PUP.........................................................        5.5(i)
PUPS........................................................        5.5(i)
Release.....................................................   3.14(e)(iv)
Representatives.............................................        5.2(a)
Rexene Plan.................................................     5.5(b)(1)
Rexene SERP.................................................        5.5(f)
Rights Agreement............................................           5.6
Schroder Wertheim...........................................           2.5
SEC.........................................................           2.5
Secretary of State..........................................           1.2
Securities Act..............................................           3.5
Severance Agreement.........................................        5.5(1)
Shares......................................................           2.1
Smith Barney................................................           2.5
Special Meeting.............................................           2.5
State Takeover Laws.........................................          3.19
Subsidiaries................................................    3.13(j)(i)
Subsidiary..................................................           3.1
Superior Proposal...........................................        5.2(d)
Surviving Corporation.......................................           1.1
Taxes.......................................................   3.13(j)(ii)
Tax Return..................................................   3.13(j)(ii)
Third Party Bidder..........................................        5.2(a)
Twelve Month Premiums.......................................           5.8
Voting Debt.................................................        3.2(a)
1934 Act....................................................           2.5
1934 Act Rules..............................................           2.5
</TABLE>
 
                                       A-5
<PAGE>   61
 
                          AGREEMENT AND PLAN OF MERGER
 
     AGREEMENT AND PLAN OF MERGER, dated as of June 9, 1997, by and among
Huntsman Corporation, a Utah corporation ("Parent"), Huntsman Centennial
Corporation, a Delaware corporation and a wholly-owned subsidiary of Parent
("Acquisition"), and Rexene Corporation, a Delaware corporation (the "Company").
 
     WHEREAS, the Boards of Directors of Parent, Acquisition and the Company
have each approved, and determined to recommend to their respective
stockholders, the acquisition of the Company by Parent upon the terms and
subject to the conditions set forth herein; and
 
     WHEREAS, in furtherance of such acquisition, the Boards of Directors of
Parent, Acquisition and the Company have each approved this Agreement and the
merger of Acquisition with and into the Company in accordance with the terms of
this Agreement and the General Corporation Law of the State of Delaware (the
"DGCL");
 
     NOW, THEREFORE, in consideration of the foregoing and the respective
representations, warranties, covenants and agreements set forth herein, the
parties hereto agree as follows:
 
                                   ARTICLE I
 
                                   THE MERGER
 
     Section 1.1  The Merger. Upon the terms and subject to the conditions of
this Agreement and in accordance with the DGCL, at the Effective Time (as
defined in Section 1.2 hereof), Acquisition shall be merged (the "Merger") with
and into the Company and the separate corporate existence of Acquisition shall
cease. After the Merger, the Company shall continue as the surviving corporation
(sometimes hereinafter referred to as the "Surviving Corporation"). The Merger
shall have the effects set forth in the DGCL. Without limiting the generality of
the foregoing, at the Effective Time, all the rights, privileges, immunities,
powers and franchises of the Company and Acquisition shall vest in the Surviving
Corporation and all obligations, duties, debts and liabilities of the Company
and Acquisition shall become the obligations, duties, debts and liabilities of
the Surviving Corporation.
 
     Section 1.2  Effective Time. On or as promptly as practicable following the
satisfaction or waiver of all of the conditions set forth in Article VI hereof,
Acquisition and the Company will cause an appropriate Certificate of Merger (the
"Certificate of Merger") to be executed and filed with the Secretary of State of
the State of Delaware (the "Secretary of State") in such form and executed as
provided in the DGCL. The Merger shall become effective at such time as the
Certificate of Merger has been duly filed with the Secretary of State or such
time as is agreed upon by the parties and specified in the Certificate of
Merger, and such time is hereinafter referred to as the "Effective Time."
 
     Section 1.3  Closing. The closing of the Merger (the "Closing") will take
place at 10:00 a.m., New York time, on a date to be specified by the parties,
which shall be no later than the second business day after satisfaction or
waiver of all of the conditions set forth in Article VI hereof, other than those
conditions that by their nature are to be satisfied at the Closing, but subject
to the fulfillment or waiver of those conditions (the "Closing Date"), at the
offices of Skadden, Arps, Slate, Meagher & Flom LLP, 919 Third Avenue, New York,
New York 10022, unless another date or place is agreed to in writing by the
parties hereto.
 
     Section 1.4  Certificate of Incorporation; By-Laws. The Certificate of
Incorporation of Acquisition, as in effect immediately prior to the Effective
Time, shall be the Certificate of Incorporation of the Surviving Corporation
until thereafter amended in accordance with applicable law and such Certificate
of Incorporation, and the By-laws of Acquisition, as in effect immediately prior
to the Effective Time, shall be the By-laws of the Surviving Corporation until
thereafter amended as provided by law, the Certificate of Incorporation and such
By-laws.
 
                                       A-6
<PAGE>   62
 
     Section 1.5  Directors and Officers of the Surviving Corporation.
 
     (a) The directors of Acquisition immediately prior to the Effective Time
shall, from and after the Effective Time, be the directors of the Surviving
Corporation until their successors shall have been duly elected or appointed and
qualified or until their earlier death, resignation or removal in accordance
with the Surviving Corporation's Certificate of Incorporation and By-laws.
 
     (b) The officers of Acquisition immediately prior to the Effective Time
shall be the initial officers of the Surviving Corporation and shall hold office
until their respective successors are duly elected and qualified, or until their
earlier death, resignation or removal.
 
                                   ARTICLE II
 
                              CONVERSION OF SHARES
 
     Section 2.1  Conversion of Common Stock. As of the Effective Time, by
virtue of the Merger and without any action on the part of Parent, Acquisition,
the Company or the holders of any shares of common stock, par value $.01 per
share, of the Company (referred to herein as "Shares" or "Company Common
Stock"):
 
     (a) Each issued and outstanding share of Company Common Stock (other than
Shares to be cancelled in accordance with Section 2.1(c) and other than
Dissenting Shares (as defined in Section 2.4)) shall be converted into the right
to receive $16.00 per share in cash, payable to the holder thereof, without
interest (the "Merger Consideration"), upon surrender of the certificate
formerly representing such share of Company Common Stock in the manner provided
in Section 2.2. All such shares of Company Common Stock, when so converted,
shall no longer be outstanding and shall automatically be cancelled and retired
and shall cease to exist, and each holder of a certificate representing any such
Shares shall cease to have any rights with respect thereto, except the right to
receive the Merger Consideration therefor upon the surrender of such certificate
in accordance with Section 2.2. Any payment made pursuant to this Section 2.1(a)
shall be made net of applicable withholding taxes to the extent such withholding
is required by law in accordance with Section 2.2(d).
 
     (b) Each issued and outstanding share of common stock, par value $.01 per
share, of Acquisition shall be converted into and become one fully paid and
nonassessable share of common stock of the Surviving Corporation.
 
     (c) All shares of Company Common Stock that are held by the Company as
treasury stock, that are owned by any direct or indirect wholly-owned Subsidiary
(as hereinafter defined) of the Company, or that are owned by Parent,
Acquisition or any other direct or indirect wholly-owned Subsidiary of Parent or
Acquisition shall be cancelled and retired and no Merger Consideration shall be
delivered in exchange therefor.
 
     Section 2.2  Exchange of Certificates.
 
     (a) Prior to the Effective Time, Parent shall designate an agent reasonably
satisfactory to the Company to act as Paying Agent in connection with the Merger
(the "Paying Agent") for purposes of effecting the exchange of the Merger
Consideration for certificates which, prior to the Effective Time, represented
Shares and which are entitled to receive the Merger Consideration pursuant to
Section 2.1. On the Closing Date, Parent and Acquisition will provide the Paying
Agent in trust for the benefit of the holders of Shares with immediately
available funds in an aggregate amount ("Payment Fund") equal to the aggregate
Merger Consideration to be paid to the holders of Shares pursuant to Section
2.1. The Payment Fund shall be invested by the Paying Agent, as directed by
Parent, in direct obligations of the United States of America, obligations for
which the full faith and credit of the United States of America is pledged to
provide for the payment of principal and interest.
 
     (b) As promptly as practicable after the Effective Time, the Paying Agent
shall mail to each record holder, as of the Effective Time, of an outstanding
certificate or certificates which immediately prior to the Effective Time
represented Shares (the "Certificates") a form of letter of transmittal that is
reasonably
 
                                       A-7
<PAGE>   63
 
acceptable to the Company (which shall specify that delivery shall be effected,
and risk of loss and title to the Certificates shall pass, only upon proper
delivery of the Certificates to the Paying Agent) and instructions for use in
effecting the surrender of the Certificates for payment therefor. Upon surrender
to the Paying Agent of a Certificate, together with such letter of transmittal
duly executed, and any other required documents, the holder of such Certificate
shall receive promptly in exchange therefor the Merger Consideration for each
Share formerly evidenced thereby, and such Certificate shall forthwith be
cancelled. No interest will be paid or accrued on the cash payable upon the
surrender of the Certificates. If payment is to be made to a person other than
the person in whose name the surrendered Certificate is registered, it shall be
a condition of payment that the Certificate so surrendered shall be properly
endorsed or otherwise be in proper form for transfer and that the person
requesting such payment shall pay any transfer or other taxes required by reason
of the payment to a person other than the registered holder of the Certificate
surrendered or establish to the satisfaction of the Surviving Corporation that
such tax has been paid or is not applicable. One Hundred Eighty (180) days after
the Effective Time, the Surviving Corporation shall be entitled to require the
Paying Agent to deliver to it any cash (including any interest received with
respect thereto) which it has made available to the Paying Agent and which has
not been disbursed to holders of Certificates, and thereafter such holders shall
be entitled to look to the Surviving Corporation (subject to abandoned property,
escheat or other similar laws) only as general unsecured creditors thereof with
respect to the cash payable upon due surrender of their Certificates. The
Surviving Corporation shall pay all charges and expenses, including those of the
Paying Agent, in connection with the distribution of the Merger Consideration
for Shares. From and after the Effective Time, until surrendered in accordance
with the provisions of this Section 2.2(b), each Certificate (other than
Certificates which represented Shares held by the Company, any direct or
indirect wholly-owned Subsidiary of the Company, Parent, Acquisition or any
direct or indirect wholly-owned Subsidiary of Parent or Acquisition and other
than Dissenting Shares (as hereinafter defined in Section 2.4)) shall represent
for all purposes only the right to receive consideration equal to the Merger
Consideration multiplied by the number of Shares evidenced by such Certificate,
without any interest thereon. From and after the Effective Time, holders of
Certificates shall have no right to vote or to receive any dividends or other
distributions with respect to any Shares which were theretofore represented by
such Certificates, other than any dividends or other distributions payable to
holders of record as of a date prior to the Effective Time, and shall have no
other rights other than as provided herein or by applicable law.
 
     (c) From and after the Effective Time, there shall be no transfers on the
stock transfer books of the Surviving Corporation of the Shares which were
outstanding immediately prior to the Effective Time. If, after the Effective
Time, Certificates are presented to the Paying Agent or the Surviving
Corporation, they shall be cancelled and exchanged for the Merger Consideration
in accordance with the procedures set forth in this Article II.
 
     (d) The Paying Agent shall be entitled to deduct and withhold from the
consideration otherwise payable pursuant to this Agreement to any holder of
Shares such amounts as the Paying Agent is required to deduct and withhold with
respect to the making of such payment under the Internal Revenue Code of 1986,
as amended (the "Code"). To the extent that amounts are so withheld by the
Paying Agent, such withheld amounts shall be treated for all purposes of this
Agreement as having been paid to the holder of the Certificates in respect of
which such deduction and withholding was made by the Paying Agent.
 
     (e) In the event any Certificate shall have been lost, stolen or destroyed,
upon the making of an affidavit of that fact by the person claiming such
Certificate to be lost, stolen or destroyed, the Paying Agent will issue in
exchange for such lost, stolen or destroyed Certificate the Merger Consideration
deliverable in respect thereof as determined in accordance with this Article II,
provided that the person to whom the Merger Consideration is paid shall, as a
condition precedent to the payment thereof, give the Surviving Corporation a
bond in such sum as it may direct or otherwise indemnify the Surviving
Corporation in a manner satisfactory to it against any claim that may be made
against the Surviving Corporation with respect to the Certificate claimed to
have been lost, stolen or destroyed.
 
     Section 2.3  Company Option Plans. The Company shall take such actions as
are appropriate to provide that, immediately prior to the Effective Time, (i)
all outstanding options ("Company Options") outstanding under any of the
Company's 1988 Stock Incentive Plan, 1993 Non-Qualified Stock Option Plan, 1994
Long-
 
                                       A-8
<PAGE>   64
 
Term Incentive Plan, Nonqualified Stock Option Plan For Outside Directors or
1995 Stock Option Plan for Outside Directors (together, the "Option Plans"),
whether or not then exercisable or vested, shall become fully exercisable and
vested, (ii) each Company Option that is then outstanding shall be cancelled and
(iii) in consideration of such cancellation and in full satisfaction of all
rights of the holder under the Company Option, and subject to Section 5.5(l)
hereof, Parent shall pay at the Effective Time or shall cause Acquisition to pay
to the holder of each Company Option an amount in cash in respect thereof equal
to the product of (A) the excess of the Merger Consideration over the exercise
price of such Company Option, multiplied by (B) the number of Shares subject to
such Company Options (such payment to be net of applicable withholding taxes).
The Company shall take such actions as are appropriate to provide that from and
after the Effective Time the Company will not be bound by any options, warrants,
rights or agreements which would entitle any person, other than Parent or its
wholly-owned subsidiaries, to own beneficially, or to receive any payments
(other than as otherwise contemplated by this Agreement) in respect of, any
capital stock or equity of the Company or the Surviving Corporation.
 
     Section 2.4  Dissenters' Rights. Notwithstanding anything in this Agreement
to the contrary, Shares that are outstanding immediately prior to the Effective
Time and held by a holder who has not voted in favor of the Merger or consented
thereto in writing and who has delivered a written demand for appraisal of such
shares in accordance with Section 262 of the DGCL ("Dissenting Shares"), shall
not be converted into the right to receive the Merger Consideration, as provided
in Section 2.1 hereof, unless and until such holder fails to perfect or
effectively withdraws or otherwise loses his right to appraisal and payment
under the DGCL. If, after the Effective Time, any such holder fails to perfect
or effectively withdraws or otherwise loses his right to appraisal, such
Dissenting Shares shall thereupon be treated as if they had been converted as of
the Effective Time into the right to receive the Merger Consideration, without
interest or dividends thereon. The Company shall give Acquisition prompt notice
of any demands received by the Company for appraisal of Shares, and, prior to
the Effective Time, Acquisition shall have the right to participate in all
negotiations and proceedings with respect to such demands. Prior to the
Effective Time, the Company shall not, except with the prior written consent of
Acquisition, make any payment with respect to, or settle or offer to settle, any
such demands.
 
     Section 2.5  Stockholders' Meeting.
 
     (a) The Company, acting through its Board of Directors, shall, in
accordance with applicable law (i) duly call, give notice of, convene and hold a
special meeting (the "Special Meeting") of its stockholders and submit this
Agreement to a vote of the Company's stockholders as promptly as practicable
following the execution and delivery of this Agreement; (ii) as promptly as
practicable following the execution and delivery of this Agreement, subject to
review of the subject proxy materials by the Securities and Exchange Commission
("SEC") and notification (either orally or in writing) to the Company that the
SEC has no further comments relating to such proxy materials, distribute a
letter to stockholders, notice of meeting, proxy statement and form of proxy to
stockholders of the Company in connection with the Merger (collectively,
including any amendments or supplements thereto, the "Proxy Statement"), and
include in the Proxy Statement, (A) the recommendation of the Board of Directors
that stockholders of the Company vote in favor of the approval of the Merger
Agreement and (B) the written opinions of Schroder Wertheim & Co. Incorporated
("Schroder Wertheim") and Smith Barney Inc. ("Smith Barney") that the Merger
Consideration is fair to the stockholders of the Company from a financial point
of view; (iii) as promptly as practicable following the execution and delivery
of this Agreement, file with the SEC a preliminary form of the Proxy Statement
to be sent to the stockholders of the Company relating to the solicitation of
stockholder votes at the Special Meeting, which Proxy Statement shall include
all information concerning the Company, Parent and Acquisition required to be
set forth therein pursuant to the Securities Exchange Act of 1934, as amended
(the "1934 Act") and the applicable rules and regulations thereunder (the "1934
Act Rules" and, together with the 1934 Act, the "Exchange Act") in connection
with the transactions contemplated by this Agreement; (iv) file a definitive
form of the Proxy Statement which shall reflect compliance with comments and
requests in accordance with the Exchange Act from the SEC as the Company and
Parent shall deem appropriate; (v) distribute such definitive Proxy Statement to
its stockholders in accordance with applicable law; and (vi) take all such other
action reasonably necessary or appropriate to obtain the lawful approval of this
 
                                       A-9
<PAGE>   65
 
Agreement by the stockholders of the Company. Notwithstanding the foregoing, the
Special Meeting need not be called or held and, prior to the Special Meeting,
the recommendation of the Board of Directors of the Company may be withdrawn,
modified or amended to the extent that, as a result of the commencement or
receipt of an Acquisition Proposal (as hereinafter defined in Section 5.2(a))
which constitutes a Superior Proposal (as hereinafter defined in Section
5.2(d)), the Board of Directors of the Company determines in good faith, after
receipt of advice from independent legal counsel to the Company, that the
failure to so act would result in a breach of its fiduciary duties under
applicable law.
 
     (b) The Company shall pay all expenses related to the printing,
preparation, filing and mailing of the Proxy Statement.
 
     (c) Parent and Acquisition shall furnish to the Company all information
concerning Parent, Acquisition and their Affiliates (as hereinafter defined in
Section 8.5) required by the Exchange Act or as otherwise required by the
Commissioners of the SEC to be set forth in the Proxy Statement.
 
     (d) Each of the Company and Parent shall consult and confer with the other
and the other's counsel regarding the Proxy Statement and each shall have the
opportunity to comment on such Proxy Statement and any amendments and
supplements thereto before the Proxy Statement, and any amendments or
supplements thereto, are filed with the SEC or mailed to Company stockholders.
Each of the Company and Parent will provide to the other copies of all
correspondence between it (or its advisors) and the SEC relating to the Proxy
Statement. The Company and Parent agree that all telephonic calls and meetings
with the SEC regarding the Proxy Statement and the transactions contemplated by
this Agreement shall include representatives of each of the Company and Parent.
 
     (e) Parent will vote, or cause to be voted, all Shares acquired by Parent,
Acquisition or any other Subsidiary of Parent in favor of the Merger and the
approval of this Agreement.
 
                                  ARTICLE III
 
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
 
     The Company represents and warrants to Parent and Acquisition that:
 
     Section 3.1  Organization. The Company and each of its Subsidiaries is a
corporation or other entity duly organized, validly existing, and in good
standing under the laws of the jurisdiction of its incorporation or organization
(or the equivalent thereof in the case of foreign Subsidiaries), has all
requisite corporate power and authority and all necessary governmental approvals
to own, lease and operate its properties and to carry on its business as it is
now being conducted, and is qualified or licensed to do business as a foreign
corporation and is in good standing in each jurisdiction in which the nature of
the business conducted by it makes such qualification or licensing necessary,
except where the failure to be so organized, existing and in good standing or to
have such power, authority or governmental approvals, or to be so qualified or
licensed would not have a Material Adverse Effect (as defined below) on the
Company and its Subsidiaries taken as a whole. The Company has previously
delivered to Parent a complete and correct copy of each of its Restated
Certificate of Incorporation, as amended, and its Amended and Restated By-Laws,
as currently in effect, and complete and correct copies of the certificates of
incorporation and by-laws, as currently in effect, or similar organizational
documents of all of the Company's Subsidiaries. Section 3.1 of the Disclosure
Schedule sets forth a complete list of the Company's Subsidiaries. For purposes
of this Agreement, (i) any reference to any event, change or effect having a
"Material Adverse Effect" on or with respect to any entity (or group of entities
taken as a whole) means such event, change or effect, individually or in the
aggregate with such other events, changes, or effects, which is materially
adverse to the financial condition, businesses, results of operations, assets,
liabilities or properties of such entity (or, if used with respect thereto, of
such group of entities taken as a whole); (ii) "Subsidiary" shall mean with
respect to any Person, any corporation or other entity of which more than 50% of
the securities or other interests having by their terms ordinary voting power to
elect a majority of the Board of Directors or others performing similar
functions with respect to such entity is directly or indirectly owned by such
Person; and (iii) "Person" shall mean an individual, partnership, joint venture,
limited liability company, trust, corporation, unincorporated entity or
Governmental Entity (as hereinafter defined in
 
                                      A-10
<PAGE>   66
 
Section 3.4). The only Person of which the Company beneficially owns 50% of the
securities or other equity interests is Orrex Plastics Company LLC ("Orrex").
Section 3.1 of the Disclosure Schedule sets forth a list of all Orrex charter or
governance agreements and related documents (the "Orrex Governance Documents")
and true and correct copies of such Orrex Governance Documents have previously
been supplied to Parent.
 
     Section 3.2  Capitalization.
 
     (a) The authorized capital stock of the Company consists of 100,000,000
shares of Company Common Stock and 1,000,000 shares of preferred stock, par
value $.01 per share (the "Preferred Stock"). As of the date hereof, (i)
18,846,951 shares of Company Common Stock are issued and outstanding, (ii)
11,500 shares of Company Common Stock are issued and held in the treasury of the
Company, (iii) there are no shares of Preferred Stock issued and outstanding,
(iv) Company Options to acquire 1,127,561 shares of Company Common Stock were
outstanding under the Option Plans and (v) 420,000 shares of Company Common
Stock were reserved for issuance pursuant to the Option Plans and all other
employee benefit plans of the Company. No shares of Company Common Stock have
been reserved for issuance pursuant to the Rights Agreement (as hereinafter
defined in Section 5.6). All the outstanding shares of the Company's capital
stock are duly authorized, validly issued, fully paid and non-assessable. There
are no bonds, debentures, notes or other indebtedness having general voting
rights (or convertible into securities having such rights) ("Voting Debt") of
the Company or any of its Subsidiaries issued and outstanding. Except as set
forth above and for the transactions contemplated by this Agreement, (i) there
are no shares of capital stock of the Company authorized, issued or outstanding
and (ii) there are no existing options, warrants, calls, pre-emptive rights,
subscriptions or other rights, convertible securities, agreements, arrangements
or commitments of any character, relating to the issued or unissued capital
stock of the Company or any of its Subsidiaries, obligating the Company or any
of its Subsidiaries to issue, transfer or sell or cause to be issued,
transferred or sold any shares of capital stock or Voting Debt of, or other
equity interest in, the Company or any of its Subsidiaries or securities
convertible into or exchangeable for such shares or equity interests or
obligations of the Company or any of its Subsidiaries to grant, extend or enter
into any such option, warrant, call, subscription or other right, convertible
security, agreement, arrangement or commitment. Except as set forth in Section
3.2(a) of the Disclosure Schedule, there are no outstanding contractual
obligations of the Company or any of its Subsidiaries to repurchase, redeem or
otherwise acquire any Shares of the capital stock of the Company or any
Subsidiary or affiliate of the Company or to provide funds to make any
investment (in the form of a loan, capital contribution or otherwise) in any
Subsidiary or any other entity and following the Merger, neither the Company nor
any of its Subsidiaries will have any obligation to issue, transfer or sell any
shares of its capital stock.
 
     (b) Except as set forth in Section 3.2(b) of the Company's disclosure
schedule (the "Disclosure Schedule"), all of the outstanding shares of capital
stock of each of the Company's Subsidiaries are beneficially owned by the
Company, directly or indirectly, except for any directors' qualifying shares of
the Company's foreign Subsidiaries, and all such shares have been validly issued
and are fully paid and nonassessable and are owned by either the Company or one
of its Subsidiaries free and clear of all liens, charges, security interests,
options, claims or encumbrances of any nature whatsoever (collectively,
"Liens").
 
     (c) Except as set forth in Section 3.2(c) of the Disclosure Schedule, there
are no voting trusts or other agreements or understandings to which the Company
or any of its Subsidiaries is a party with respect to the voting of the capital
stock of the Company or any of the Subsidiaries. None of the Company or its
Subsidiaries is required to redeem, repurchase or otherwise acquire shares of
capital stock of the Company, or any of its Subsidiaries, respectively, as a
result of the transactions contemplated by this Agreement.
 
     (d) At the Effective Time, the number of shares of Company Common Stock
outstanding (assuming all Company Options outstanding on the date hereof are
exercised) shall not exceed 20,000,000.
 
     Section 3.3  Authorization; Validity of Agreement.
 
     (a) The Company has the requisite corporate power and authority to execute
and deliver this Agreement and, subject to approval of its stockholders as
contemplated by Section 2.5 hereof, to consummate the transactions contemplated
hereby. The execution and delivery by the Company of this Agreement and the
 
                                      A-11
<PAGE>   67
 
consummation of the transactions contemplated hereby have been duly authorized
by the Board of Directors of the Company and, except for obtaining the
stockholder approval contemplated by Section 2.5 hereof in the case of this
Agreement, no other corporate proceedings on the part of the Company are
necessary to authorize the execution and delivery of this Agreement by the
Company and the consummation of the transactions contemplated hereby. This
Agreement has been duly executed and delivered by the Company and, assuming due
authorization, execution and delivery of this Agreement by Parent and
Acquisition, this Agreement is a valid and binding obligation of the Company
enforceable against the Company in accordance with its terms, except that such
enforcement may be subject to or limited by (i) bankruptcy, insolvency or other
similar laws, now or hereafter in effect, affecting creditors' rights generally,
and (ii) the effect of general principles of equity (regardless of whether
enforceability is considered in a proceeding at law or in equity).
 
     (b) The Board of Directors of the Company has duly and validly approved and
taken all corporate action required to be taken by the Board for the
consummation of the transactions contemplated by this Agreement including, but
not limited to, all action necessary to render the provisions of Section 203 of
the DGCL inapplicable to this Agreement and the transactions contemplated
hereby. The affirmative vote of the holders of a majority of the Shares is the
only vote of the holders of any class or series of capital stock of the Company
necessary to approve this Agreement and the Merger.
 
     Section 3.4  No Violations; Consents and Approvals. Except as set forth in
Section 3.4 of the Disclosure Schedule and for filings, permits, authorizations,
consents and approvals as may be required under, and other applicable
requirements of, the Exchange Act, the Hart-Scott-Rodino Antitrust Improvements
Act of 1976, as amended (the "HSR Act"), and the DGCL, and for the approval of
this Agreement and the Merger by the Company's stockholders and the filing and
recordation of the Certificate of Merger as required by the DGCL, neither the
execution and delivery of this Agreement by the Company nor the consummation by
the Company of the transactions contemplated hereby will (i) conflict with or
violate any provision of the Restated Certificate of Incorporation or Amended
and Restated By-Laws of the Company or the certificates of incorporation or
by-laws or similar organizational documents of any of its Subsidiaries, (ii)
require any filing with, or permit, authorization, consent or approval of, any
court, arbitral tribunal, administrative agency or commission or other
governmental or other regulatory authority, agency or official (a "Governmental
Entity"), (iii) assuming the accuracy of the representations and warranties of,
and performance of the covenants by Parent and Acquisition as set forth herein,
result in a violation or breach of, or constitute (with or without due notice or
lapse of time or both) a default (or give rise to any right of termination,
amendment, cancellation or acceleration) or require any consent under, any of
the terms, conditions or provisions of any note, bond, mortgage, indenture,
guarantee, other evidence of indebtedness, lease, license, contract, agreement
or other instrument or obligation to which the Company or any of its
Subsidiaries is a party or by which any of them or any of their assets may be
bound ("Company Agreements") or result in the imposition or creation of any Lien
on the assets of the Company or any of its Subsidiaries or (iv) violate any
order, writ, injunction, decree, statute, rule or regulation applicable to the
Company, any of its Subsidiaries or any of their properties or assets; except in
the case of clauses (ii), (iii) or (iv), (A) where the failure to obtain such
permits, authorizations, consents or approvals or to make such filings would not
have a Material Adverse Effect on the Company and its Subsidiaries, taken as a
whole, or (B) for such violations, breaches or defaults which would not have a
Material Adverse Effect on the Company and its Subsidiaries, taken as a whole.
 
     Section 3.5  SEC Reports and Financial Statements. The Company has filed
with the SEC, and has heretofore made available to Parent true and complete
copies of, all forms and documents required to be filed by it since January 1,
1994 under the Exchange Act, or the Securities Act of 1933, as amended (the
"Securities Act") (as such documents have been amended since the time of their
filing, collectively, the "Company SEC Documents"). As of their respective dates
(or, if amended, as of the date of the last such amendment), the Company SEC
Documents, including, without limitation, any financial statements or schedules
included therein (i) did not contain any untrue statement of a material fact or
omit to state a material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading and (ii) complied in all material respects with
the applicable requirements of the Exchange Act and the Securities Act, as the
case may be, and the applicable rules and regulations of the SEC thereunder. The
consolidated financial statements included in the Company
 
                                      A-12
<PAGE>   68
 
SEC Documents (i) have been prepared from, and are in accordance with, the books
and records of the Company and its consolidated Subsidiaries, (ii) have been
prepared in accordance with United States generally accepted accounting
principles ("GAAP") applied on a consistent basis during the periods involved
(except as otherwise noted therein and except that the quarterly financial
statements are subject to year end adjustment and do not contain all footnote
disclosures required by GAAP), (iii) comply in all material respects with
applicable accounting requirements and with the published rules and regulations
of the SEC with respect thereto and (iv) fairly present in all material respects
the consolidated financial position and the consolidated results of operations
and cash flows of the Company and its consolidated Subsidiaries as at the dates
thereof or for the periods presented therein. No Subsidiary of the Company is
required to file any reports, forms or other documents with the SEC.
 
     Section 3.6  Absence of Certain Changes. Except as disclosed in the Company
SEC Documents filed prior to the date of this Agreement or as disclosed in
Section 3.6 of the Disclosure Schedule, since December 31, 1996, the Company and
its Subsidiaries have conducted their respective businesses and operations only
in the ordinary course and consistent with past practice, and there have not
occurred (i) any events or changes (including the incurrence of any liabilities
of any nature, whether or not accrued, contingent or otherwise) having or which
would have a Material Adverse Effect on the Company and its Subsidiaries, taken
as a whole; (ii) except for the payment of regular quarterly cash dividends
consistent with past practice, any declaration, setting aside or payment of any
dividend or other distribution (whether in cash, stock or property) with respect
to the equity interests of the Company or any of its Subsidiaries; or (iii) any
change by the Company or any of its Subsidiaries in accounting principles or
methods, except insofar as may be required by a change in GAAP. Except as
disclosed in the Company SEC Documents filed prior to the date of this Agreement
or in Section 3.6 or Section 5.1 of the Disclosure Schedule, since December 31,
1996, neither the Company nor any of its Subsidiaries has taken any of the
actions prohibited by Section 5.1 hereof. For purposes of this Agreement,
"knowledge of the Company" shall mean the actual knowledge of the individuals
specified in Section 3.6 of the Disclosure Schedule.
 
     Section 3.7  No Undisclosed Liabilities. Except as disclosed in the Company
SEC Documents filed prior to the date of this Agreement or in Section 3.7 of the
Disclosure Schedule and except for liabilities and obligations incurred in the
ordinary course of business and consistent with past practice since December 31,
1996, neither the Company nor any of its Subsidiaries have incurred any
liabilities or obligations of any nature, whether or not accrued, contingent or
otherwise, that have, or would have, a Material Adverse Effect on the Company
and its Subsidiaries, taken as a whole, or would be required to be reflected or
reserved against in the consolidated financial statements of the Company and its
Subsidiaries (including notes thereto) prepared in accordance with GAAP.
 
     Section 3.8  Information in Proxy Statement. The Proxy Statement at the
date mailed to Company stockholders and at the time of the Special Meeting, (i)
will not contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading and (ii) will comply in all material respects with the provisions of
the Exchange Act; except that no representation is made by the Company with
respect to statements made in the Proxy Statement based on written information
supplied by Parent or Acquisition for inclusion in the Proxy Statement.
 
     Section 3.9  Employee Benefit Plans; ERISA.
 
     (a) Section 3.9(a) of the Disclosure Schedule contains a true and complete
list of each bonus, deferred compensation, incentive compensation, stock
purchase, stock option, severance or termination pay, hospitalization or other
medical, life or other insurance, supplemental unemployment benefits,
profit-sharing, pension or retirement plan, program or agreement and each other
employee benefit plan within the meaning of Section 3(3) of ERISA, sponsored,
maintained or contributed to by the Company or by any trade or business, whether
or not incorporated (an "ERISA Affiliate"), that together with the Company would
be deemed a "single employer" within the meaning of section 4001 of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA"), for the benefit of
any employee or former employee of the Company or any
 
                                      A-13
<PAGE>   69
 
ERISA Affiliate (the "Plans"). Section 3.9(a) of the Disclosure Schedule
identifies each of the Plans that is an "employee benefit plan," as defined in
section 3(3) of ERISA (the "ERISA Plans").
 
     (b) With respect to each Plan, the Company has heretofore delivered or made
available to Acquisition true and complete copies of each of the following
documents:
 
          (i) the Plan;
 
          (ii) the most recent annual report and actuarial report, if required
     under ERISA;
 
          (iii) the most recent Summary Plan Description (as defined in ERISA)
     required under ERISA with respect thereto;
 
          (iv) if the Plan is funded through a trust or any third party funding
     vehicle, the trust or other funding agreement and the latest financial
     statements thereof; and
 
          (v) the most recent determination letter received from the Internal
     Revenue Service with respect to each Plan intended to qualify under section
     401(a) of the Code.
 
     (c) No liability under Title IV of ERISA has been incurred by the Company
or any ERISA Affiliate that has not been satisfied or otherwise discharged in
full, and no condition exists that presents a material risk to the Company or
any ERISA Affiliate of incurring a liability under such Title, other than
liability for contributions due in the ordinary course and premiums due the
Pension Benefit Guaranty Corporation ("PBGC") (which contributions and premiums
have been paid when due).
 
     (d) No ERISA Plan is a "multiemployer pension plan," as defined in section
3(37) of ERISA, nor is any ERISA Plan a plan described in section 4063(a) of
ERISA.
 
     (e) No ERISA Plan or any trust established thereunder has incurred any
"accumulated funding deficiency" (as defined in section 302 of ERISA and section
412 of the Code), whether or not waived, as of the last day of the most recent
fiscal year of each ERISA Plan ended prior to the Closing Date. No Lien imposed
under the Code or ERISA exists or is likely to be imposed on account of any
ERISA Plan. The form of each ERISA Plan intended to be "qualified" within the
meaning of section 401(a) of the Code has been determined by the Internal
Revenue Service to be so qualified (or timely application has been made
therefor); no event has occurred since the date of such determination that would
adversely affect such qualification for which the cost of correction would have
a Material Adverse Effect on the Company and its Subsidiaries taken as a whole;
and each trust maintained thereunder has been determined by the Internal Revenue
Service to be exempt from taxation under section 501(a) of the Code. Each Plan
has been operated and administered in accordance with its terms and applicable
law, including but not limited to ERISA and the Code, except for such
non-compliance that would not have a Material Adverse Effect on the Company and
its Subsidiaries taken as a whole.
 
     (f) There are no pending, threatened or anticipated claims (other than
routine claims for benefits) by, on behalf of, or against, any of the Plans or
any trusts related thereto that if determined adversely to the Company and its
Subsidiaries would have a Material Adverse Effect on the Company and its
Subsidiaries taken as a whole.
 
     (g) The PBGC has not instituted proceedings to terminate any of the ERISA
Plans and no condition exists that presents a material risk that such
proceedings will be instituted.
 
     (h) As of December 31, 1996, the present value of all actuarial accrued
benefit liabilities under the Company's defined benefit plans subject to Title
IV of ERISA, as determined by the actuary of such plans using the actuarial
assumptions and methods described in the actuarial valuation as of January 1,
1996, did not exceed the market value of the assets of such plans by more than
$1,500,000.
 
     (i) Neither the Company, any ERISA Affiliate, any of the ERISA Plans, any
trust created thereunder nor any trustee or administrator thereof has engaged in
a transaction or has taken or failed to take any action in connection with which
the Company, any ERISA Affiliate, any of the ERISA Plans, any such trust, any
trustee or administrator thereof, or any party dealing with the ERISA Plans or
any such trust could be subject
 
                                      A-14
<PAGE>   70
 
to either a civil penalty assessed pursuant to section 409 or 502(i) of ERISA or
a tax imposed pursuant to section 4975, 4976 or 4980B of the Code that would
have a Material Adverse Effect on the Company and its Subsidiaries taken as a
whole.
 
     (j) Except as disclosed on Section 3.9(j) of the Disclosure Schedule, no
amounts payable under the Plans or any other agreement or arrangement to which
the Company is a party will, as a result of the transaction contemplated hereby,
fail to be deductible for federal income tax purposes by virtue of section 280G
of the Code.
 
     (k) Except as disclosed on Section 3.9(k) of the Disclosure Schedule, no
ERISA Plan provides benefits, including without limitation death or medical
benefits (whether or not insured), with respect to current or former employees
after retirement or other termination of employment (other than (i) coverage
mandated by applicable law, (ii) disability, death or retirement benefits under
any "employee pension plan," as that term is defined in section 3(2) of ERISA,
(iii) deferred compensation benefits or severance benefits accrued as
liabilities on the books of the Company or the ERISA Affiliates, (iv) severance
pay, disability benefits and benefit claims under ERISA Plans incurred on or
prior to a termination of employment but not reported or paid until after such
termination, or (v) benefits, the full cost of which is borne by the current or
former employee (or his beneficiary).
 
     Section 3.10  Litigation; Compliance with Law.
 
     (a) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or in Section 3.10 of the Disclosure Schedule, there is
no suit, claim, action, proceeding or investigation pending or, to the knowledge
of the Company, threatened, against or affecting the Company or any of its
Subsidiaries or any of their respective properties which, if determined
adversely to the Company or such Subsidiaries, would have a Material Adverse
Effect on the Company and its Subsidiaries taken as a whole or would prevent or
delay the Company from consummating the Merger or the other transactions
contemplated hereby.
 
     (b) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or in Section 3.10 of the Disclosure Schedule, the
Company and its Subsidiaries are in compliance in all material respects with all
laws, statutes, regulations, rules, ordinances, judgments, decrees, orders,
writs and injunctions, of any court or Governmental Entity relating to any of
the property owned, leased or used by them, or applicable to their business,
including, but not limited to, employment and employment practices, labor
relations, occupational safety and health, environmental, tax, interstate
commerce and antitrust laws, except for such noncompliance which would not have
a Material Adverse Effect on the Company and its Subsidiaries taken as a whole.
Except as set forth in the Company SEC Documents filed prior to the date of this
Agreement, neither the Company nor any of its Subsidiaries nor any of their
respective properties is subject to any judgment, decree, order, writ or
injunction having, or which would have, a Material Adverse Effect on the Company
and its Subsidiaries taken as a whole, or which would prevent or delay the
consummation of the transactions contemplated hereby.
 
     (c) The Company and its Subsidiaries hold all licenses, permits, variances
and approvals of Governmental Entities necessary for the lawful conduct of their
respective businesses as currently conducted except where the failure to hold
such licenses, permits, variances or approvals would not have a Material Adverse
Effect on the Company and its Subsidiaries taken as a whole.
 
     Section 3.11  Intellectual Property.
 
     (a) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or in Section 3.11 of the Disclosure Schedule, to the
knowledge of the Company, the Company and its Subsidiaries own or possess
adequate licenses or other valid rights to use or operate within the scope of
all United States and foreign patents, trademarks, trade names, copyrights,
service marks, all applications therefor and registrations thereof, confidential
or proprietary technical and business information, know-how and trade secrets,
and computer software (collectively, "Intellectual Property") which are material
to the operations of the Company and its Subsidiaries, taken as a whole, as
currently conducted. Except as disclosed in the Company SEC Documents filed
prior to the date of this Agreement or in Section 3.11 of the Disclosure
Schedule, such Intellectual Property that is owned by the Company or its
Subsidiaries is not subject to any
 
                                      A-15
<PAGE>   71
 
Liens except for such Liens that would not have a Material Adverse Effect on the
Company or its Subsidiaries, and, to the knowledge of the Company, there are no
infringements or other violations or conflicts with the rights of others with
respect to the (i) use of or other conduct by the Company or its Subsidiaries
within the scope of, (ii) ownership of, (iii) validity of, or (iv)
enforceability of, any Intellectual Property owned by the Company or its
Subsidiaries that has or would have a Material Adverse Effect on the Company and
its Subsidiaries taken as a whole.
 
     Section 3.12  Company Agreements. Each Company Agreement that is material
to the consolidated business and operations of the Company and its Subsidiaries
as currently conducted or that is listed on Section 3.12(a) of the Disclosure
Schedule (collectively, the "Material Company Agreements") is a valid, binding
and enforceable obligation of the Company or Subsidiary of the Company that is a
party thereto, except where the failure to be valid, binding and enforceable
would not have a Material Adverse Effect on the Company and its Subsidiaries
taken as a whole, and there are no defaults thereunder on the part of the
Company or its Subsidiary (which is a party thereto, as the case may be), or, to
the knowledge of the Company, on the part of the other party thereto), except
those defaults that would not have a Material Adverse Effect on the Company and
its Subsidiaries taken as a whole. Except as disclosed in Section 3.12(b) of the
Disclosure Schedule, neither the Company nor any Subsidiary is a party to any
technology license agreement or sales agency or distributorship agreement that
limits in any material manner the ability of the Company or any Subsidiary to
compete in or conduct any significant line of business or compete with any
Person or in any geographic area or during any period of time exceeding one year
from the date hereof.
 
     Section 3.13  Taxes. Except as set forth in Section 3.13 of the Disclosure
Schedule:
 
     (a) the Company and its Subsidiaries have (i) filed (or there have been
filed on their behalf) with the appropriate Governmental Entity all material Tax
Returns (as hereinafter defined) required to be filed by them and such Tax
Returns are true, correct and complete in all material respects, (ii) maintained
in all material respects all required records with respect to all material Tax
Returns, (iii) paid in full (or there has been paid on their behalf) all
material Taxes (as hereinafter defined) that are due and payable for all taxable
periods and portions thereof except to the extent of reserves established in
accordance with GAAP on the consolidated financial statements included in the
Company SEC Documents and (iv) made provision, in accordance with GAAP, for all
future material Tax liabilities (including reserves for deferred Taxes
established in accordance with GAAP and for all contingent Tax liabilities) for
all taxable periods and portions thereof;
 
     (b) no federal, state, local or foreign audits or other administrative
proceedings ("Audits") or court proceedings are presently pending with regard to
any Taxes or Tax Returns of the Company or its Subsidiaries, and none of the
Company or its Subsidiaries has received written notice of either the
commencement of any such Audits or of the intention on the part of any
Governmental Entity to commence any such Audits;
 
     (c) no Governmental Entity has asserted in writing against the Company or
any of its Subsidiaries any material deficiency for any Taxes which have not
been satisfied in full or adequately reserved for in accordance with GAAP on the
consolidated financial statements included in the Company SEC Documents;
 
     (d) there are no Liens for Taxes upon any property or assets of the Company
or any of its Subsidiaries (except for current Taxes that are not yet due and
payable);
 
     (e) the income Tax Returns of or including the Company and each of its
Subsidiaries have been examined by and settled with the appropriate Governmental
Entity (or the applicable statutes of limitation for the assessment of income
Taxes for such periods have expired) for all periods through and including
December 31, 1992;
 
     (f) none of the Company or its Subsidiaries has waived any statute of
limitation with respect to Taxes (which waiver is currently in effect) or has
agreed to any extension of time with respect to a Tax assessment or deficiency
(which has not yet been paid) or has extended the time to file any income or
other material Tax Return (which Tax Return has not subsequently been filed);
 
                                      A-16
<PAGE>   72
 
     (g) none of the Company or its Subsidiaries is a party to any income tax
allocation, tax indemnity or tax sharing agreement or arrangement, nor has any
of the Company or its Subsidiaries ever joined in the filing of a consolidated,
combined, unitary or other group Tax Return with any corporation other than the
Company and its Subsidiaries. None of the Company or its Subsidiaries could have
any liability for Taxes of any other corporation, person or entity (other than
the Company and its Subsidiaries) under Treasury Regulation Section 1.1502-6 (or
any similar provision of state, local or foreign law) by contract, or otherwise
that, individually or in the aggregate, would have a Material Adverse Effect on
the Company and its Subsidiaries taken as a whole;
 
     (h) the Company and its Subsidiaries have complied in all material respects
with all applicable laws, rules and regulations relating to the payment and
withholding of Taxes and, except to the extent of any reserves established in
accordance with GAAP on the consolidated financial statements included in the
Company SEC Documents have, within the time and manner prescribed by law,
withheld and paid over to the proper Governmental Entity all amounts required to
be withheld and paid over under all applicable laws;
 
     (i) none of the Subsidiaries of the Company have an investment in "United
States property" within the meaning of Section 956 of the Code; and
 
     (j) (i) For purposes of this Section 3.13, the term "Subsidiaries" shall
include any entity in which the Company or a Subsidiary of the Company is a
general partner.
 
          (ii) For purposes of this Agreement: (x) "Taxes" shall mean any and
     all taxes, charges, fees, levies or other assessments, including, without
     limitation, all net income, gross income, gross receipts, excise, stamp,
     real or personal property, ad valorem, withholding, estimated, social
     security, unemployment, occupation, use, service, service use, license, net
     worth, payroll, franchise, severance, transfer, recording or other taxes,
     assessments or charges imposed by any Governmental Entity and any interest,
     penalties, or additions to tax attributable thereto; and (y) "Tax Return"
     shall mean any return, report or similar statement required to be filed
     with respect to any Tax (including any attached schedules), including,
     without limitation, any information return, claim for refund, amended
     return or declaration of estimated Tax.
 
     Section 3.14  Environmental Matters.
 
     (a) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or as disclosed in Section 3.14(a) of the Disclosure
Schedule, the Company and its Subsidiaries are and have been in compliance in
all material respects with all applicable Environmental Laws (as hereinafter
defined) which compliance includes (i) the possession of material permits,
licenses, registrations and other governmental authorizations and financial
assurances required under applicable Environmental Laws for the Company and its
Subsidiaries to operate their businesses as currently conducted, and (ii)
compliance with the terms and conditions thereof, except in all cases above
where such non-compliance would not have a Material Adverse Effect on the
Company and its Subsidiaries taken as a whole.
 
     (b) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or as disclosed in Section 3.14(b) of the Disclosure
Schedule, (i) there are no Environmental Claims pending or, to the knowledge of
the Company, threatened, against the Company or its Subsidiaries that would
result in a Material Adverse Effect on the Company and its Subsidiaries taken as
a whole, (ii) neither the Company nor its Subsidiaries has received any written
request for information under any Environmental Law from any Governmental Entity
with respect to any actual or alleged environmental contamination which has not
been remediated or otherwise resolved and the remediation of which contamination
or the resolution of the request would have a Material Adverse Effect on the
Company and its Subsidiaries taken as a whole; and (iii) none of the Company,
its Subsidiaries or, to the knowledge of the Company, any Governmental Entity,
is conducting or has conducted (or, to the knowledge of the Company, is
threatening to conduct) any environmental remediation or investigation which
would result in a Material Adverse Effect on the Company and its Subsidiaries,
taken as a whole, under any Environmental Law.
 
     (c) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or as disclosed in Section 3.14(c) of the Disclosure
Schedule, (i) to the knowledge of the Company, there is no
 
                                      A-17
<PAGE>   73
 
friable asbestos-containing material in or on any real property currently owned,
leased or currently operated by the Company or its Subsidiaries, (ii) there are
no polychlorinated diphenyls in any equipment currently owned, leased or
operated by the Company or any of its Subsidiaries as a manufacturing facility
and (iii) there are and, to the knowledge of the Company, have been no
underground storage tanks (whether or not required to be registered under any
applicable law), dumps, landfills, lagoons, surface impoundments, injection
wells or other land disposal units in or on any property currently or, to the
knowledge of the Company, formerly owned, leased or operated by the Company or
its Subsidiaries where in each case, the presence, ownership or operation of
which would result in a Material Adverse Effect on the Company and its
Subsidiaries, taken as a whole.
 
     (d) Except as disclosed in the Company SEC Documents filed prior to the
date of this Agreement or as disclosed in Section 3.14(d) of the Disclosure
Schedule, to the knowledge of the Company, there have been no Releases of
Hazardous Substances at any of the Company's or its Subsidiaries' properties or
of Hazardous Substances which were generated, stored, disposed of or transported
by the Company, which could form the basis of any Environmental Claim against
the Company, or to the knowledge of the Company, against any person or entity
whose liability for any Releases the Company has or may have retained or assumed
either contractually or by operation of law, which would have a Material Adverse
Effect on the Company and its Subsidiaries taken as a whole.
 
     (e) As used in this Agreement:
 
          (i) the term "Environmental Claim" means any claim, action,
     investigation or written notice to the Company or its Subsidiaries by any
     person or entity alleging potential liability or responsibility of the
     Company or any of its Subsidiaries (including, without limitation,
     potential liability for investigatory costs, cleanup costs, governmental
     response costs, natural resource damages, personal injuries, or penalties)
     arising out of, based on, or resulting from (a) the presence, or release
     into the environment, of any Hazardous Substance (as hereinafter defined)
     at any location, whether or not owned or operated by the Company or its
     Subsidiaries or (b) circumstances forming the basis of any violation or
     alleged violation of any applicable Environmental Law;
 
          (ii) the term "Environmental Laws" means all federal, state, local and
     foreign laws, rules, regulations, common law, ordinances, decrees, orders
     and other binding legal requirements, as in effect as of the date hereof,
     relating to pollution or protection of the environment, including without
     limitation, laws and regulations relating to emissions, discharges,
     releases or threatened releases of Hazardous Substances, or otherwise
     relating to the manufacture, processing, distribution, use, treatment,
     storage, disposal, transport or handling of Hazardous Substances;
 
          (iii) the term "Hazardous Substance" means any chemicals, pollutants,
     contaminants, hazardous wastes, toxic substances or radioactive materials
     regulated under any Environmental Law, and oil and petroleum products; and
 
          (iv) the term "Release" means any release, spill, emission, discharge,
     leaking, pumping, injection, deposit, disposal, dispersal, leaching or
     migration into the indoor or outdoor environment (including, without
     limitation, ambient air, surface water, groundwater and surface or
     subsurface strata).
 
     Section 3.15  No Default. Except as disclosed in the Company SEC Documents
filed prior to the date of this Agreement or as disclosed in Section 3.15 of the
Disclosure Schedule, the business of the Company and each of its Subsidiaries is
not being conducted in default or violation of any term, condition or provision
of (a) its respective certificate of incorporation or by-laws or similar
organizational documents, (b) any Material Company Agreement, or (c) any
federal, state, local or foreign law, statute, regulation, rule, ordinance,
judgement, decree, writ, injunction, franchise, permit or license or other
governmental authorization or approval applicable to the Company or any of its
Subsidiaries, excluding from the foregoing clauses (b) or (c), defaults or
violations that would not have a Material Adverse Effect on the Company and its
Subsidiaries taken as a whole or would not materially impair the ability of the
Company to consummate the Merger or the other transactions contemplated hereby.
 
                                      A-18
<PAGE>   74
 
     Section 3.16  Opinion of Financial Advisors. The Board of Directors of the
Company has received opinions from Schroder Wertheim and Smith Barney to the
effect that, as of the date of this Agreement, the Merger Consideration is fair
to the holders of Company Common Stock from a financial point of view, and a
written copy of which opinions will be delivered to Parent promptly after
receipt thereof by the Company.
 
     Section 3.17  Brokers. Except for Schroder Wertheim and Smith Barney (true
and complete copies of whose engagement letters have been provided to Parent),
no broker, finder or investment banker is entitled to any brokerage, finder's or
other fee or commission in connection with the transactions contemplated by this
Agreement based upon arrangements made by or on behalf of the Company.
 
     Section 3.18  Property. The Company and its Subsidiaries, as the case may
be, have good and valid title to, or in the case of leased property, have valid
leasehold interests in all properties and assets necessary to conduct the
business of the Company as currently conducted, except to the extent the failure
of this representation and warranty to be true would not have a Material Adverse
Effect on the Company and its Subsidiaries, taken as a whole.
 
     Section 3.19  Board Recommendations; Takeover Provisions. The Board of
Directors of the Company, at a meeting duly called and held, has by the majority
vote of those directors present (i) determined that this Agreement and the
transactions contemplated hereby are fair to and in the best interests of the
stockholders of the Company and has approved the same, and (ii) resolved to
recommend that the holders of the shares of Company Common Stock approve this
Agreement and the transactions contemplated herein. No State Takeover Laws (as
defined below) including, but not limited to, Section 203 of the DGCL, are
applicable to Parent or Acquisition as a result of the Merger, this Agreement or
the transactions contemplated hereby or thereby. As a result of the execution or
delivery or performance of this Agreement or as a result of the consummation of
the transactions contemplated hereby, a Distribution Date (as defined in the
Rights Agreement) shall not be deemed to occur, the Rights (as defined in the
Rights Agreement) shall not separate from the shares of Company Common Stock and
none of Parent, Acquisition or any of their Affiliates shall become an Acquiring
Person (as defined in the Rights Agreement). The current holders of the Rights
will have no additional rights under the Rights Agreement as a result of the
Merger or any other transaction contemplated by this Agreement. "State Takeover
Laws" shall mean any "fair price" or "control share acquisition" statute or
similar statute or regulation.
 
     Section 3.20  Labor Matters. Except as disclosed in the Company SEC
Documents filed prior to the date of this Agreement, neither the Company nor any
of its Subsidiaries is a party to or bound by any collective bargaining
agreement or other labor union contract applicable to persons employed by the
Company or its Subsidiaries nor, to the knowledge of the Company, as of the date
of this Agreement, are there any activities or proceedings of any labor union to
organize any such employees. Except as disclosed in the Company SEC Documents
filed prior to the date of this Agreement or as disclosed in Section 3.20 of the
Disclosure Schedule, as of the date of this Agreement, (i) there are no unfair
labor practice charges or complaints pending against the Company or any of its
Subsidiaries before the National Labor Relations Board or any current union
representation questions involving employees of the Company or any of its
Subsidiaries and (ii) there is no labor strike, lockout, organized slowdown or
organized work stoppage in effect or, to the knowledge of the Company,
threatened against the Company or any of its Subsidiaries, which, in either such
case has, had or would have, a Material Adverse Effect on the Company and its
Subsidiaries taken as a whole.
 
                                   ARTICLE IV
 
            REPRESENTATIONS AND WARRANTIES OF PARENT AND ACQUISITION
 
     Parent and Acquisition represent and warrant to the Company as follows:
 
     Section 4.1  Organization. Parent is a corporation duly organized, validly
existing and in good standing under the laws of Utah and Acquisition is a
corporation duly organized, validly existing and in good standing under the laws
of Delaware. Each of Parent and Acquisition has all requisite corporate power
and authority to own, lease and operate its properties and to carry on its
business as now being conducted except where the
 
                                      A-19
<PAGE>   75
 
failure to have such power or authority would not have a Material Adverse Effect
on Parent and Acquisition, taken as a whole, or materially impair or delay the
consummation of the transactions contemplated hereby.
 
     Section 4.2  Authorization; Validity of Agreement. Each of Parent and
Acquisition has the requisite corporate power and authority to execute and
deliver this Agreement and to consummate the transactions contemplated hereby.
The execution and delivery by Parent and Acquisition of this Agreement and the
consummation of the transactions contemplated hereby have been duly authorized
by the respective Boards of Directors of Parent and Acquisition and no other
corporate proceedings on the part of Parent or Acquisition are necessary to
authorize the execution and delivery of this Agreement by Parent and Acquisition
and the consummation of the transactions contemplated hereby. This Agreement has
been duly executed and delivered by Parent and Acquisition. Assuming due
authorization, execution and delivery of this Agreement by the Company, this
Agreement is a valid and binding obligation of Parent and Acquisition,
enforceable against each of them in accordance with its terms, except that such
enforcement may be subject to or limited by (i) bankruptcy, insolvency or other
similar laws, now or hereafter in effect, affecting creditors' rights generally,
and (ii) the effect of general principles of equity (regardless of whether
enforceability is considered in a proceeding at law or in equity).
 
     Section 4.3  Consents and Approvals; No Violations. Except as disclosed in
Section 4.3 of Parent's disclosure schedule and for filings, permits,
authorizations, consents and approvals as may be required under, and other
applicable requirements of, the Exchange Act and the HSR Act and the filing and
recordation of the Certificate of Merger as required by the DGCL, no filing
with, and no permit, authorization, consent or approval of, any Governmental
Entity is necessary for the consummation by Parent or Acquisition of the
transactions contemplated by this Agreement. Neither the execution and delivery
of this Agreement by Parent or Acquisition nor the consummation by Parent or
Acquisition of the transactions contemplated hereby nor compliance by Parent or
Acquisition with any of the provisions hereof will (i) conflict with or violate
any provision of the Articles of Incorporation or Certificate of Incorporation,
as the case may be, or By-Laws, of Parent or Acquisition or (ii) violate any
order, writ, injunction, decree, statute, rule or regulation applicable to
Parent or Acquisition or any of their properties or assets, except in the case
of clause (ii) where such violations would not have a Material Adverse Effect on
Parent and Acquisition taken as a whole.
 
     Section 4.4  Information in Proxy Statement. None of the information
supplied by Parent or Acquisition for inclusion in the Proxy Statement will, at
the date mailed to stockholders and at the time of the Special Meeting, contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they are made, not
misleading.
 
     Section 4.5  Financing. Parent and/or its Affiliates have received written
commitments (copies of which are attached as Section 4.5 of Parent's disclosure
schedule) from responsible financial institutions and others to provide, subject
to the terms and conditions of such commitments, financing sufficient, together
with other funds available to Parent, to effect the Merger and any other
transactions contemplated by this Agreement, and to pay all related fees and
expenses associated with the Merger and the transactions contemplated by this
Agreement. The financing and the consummation of the Merger and the other
transactions contemplated thereby will not result in an Event of Default or
Default under the Indenture (so long as immediately prior to the Effective Time
the Company has the ability to incur at least $1.00 of additional Indebtedness
pursuant to the Fixed Charge Coverage Ratio test set forth in the first
paragraph of Section 4.09 of the Indenture).
 
                                   ARTICLE V
 
                                   COVENANTS
 
     Section 5.1  Interim Operations of the Company. The Company covenants and
agrees that, except as (i) contemplated by this Agreement, (ii) contemplated by
the Company's capital spending program (the "CAPEX Program") disclosed in
Section 5.1 of the Disclosure Schedule (it being agreed that indebtedness
incurred in connection with the CAPEX Program shall only be made from the
Existing Credit Facilities (as
 
                                      A-20
<PAGE>   76
 
hereinafter defined) and no new or additional credit facilities or indebtedness
shall be created, entered into or incurred to fund the CAPEX Program) and other
matters disclosed in Section 5.1 of the Disclosure Schedule or (iii) approved in
writing by Parent (which approval Parent shall not unreasonably withhold except
for the approval of Parent required in accordance with the proviso in Section
5.1(h) which may be withheld for any reason), after the date hereof and prior to
the Effective Time:
 
     (a) the business of the Company and its Subsidiaries shall be conducted
only in the ordinary course consistent with past practice and, to the extent
consistent therewith, each of the Company and its Subsidiaries shall use its
reasonable efforts to preserve its business organization intact and maintain its
existing relations with customers, suppliers, employees, creditors and business
partners, and the Company shall use its reasonable efforts to cause the members
of the Executive Management Committee of the Company (such individuals being
referred to as the "EMC Members" (which EMC Members are identified and listed on
Section 5.1 of the Disclosure Schedule) and such committee being referred to as
the "EMC Committee"), to continue to perform their duties as currently performed
for the Company;
 
     (b) the Company will not, directly or indirectly, split, combine or
reclassify the outstanding Company Common Stock or any outstanding capital stock
of any of its Subsidiaries;
 
     (c) neither the Company nor any of its Subsidiaries shall: (i) amend its
certificate of incorporation or by-laws; (ii) declare, set aside or pay any
dividend or other distribution payable in cash, stock or property with respect
to its capital stock, other than regular quarterly cash dividends by the Company
in a per share amount not in excess of $.04 per Share; (iii) issue, sell,
transfer, pledge, dispose of or encumber any additional shares of, or securities
convertible into or exchangeable for, or options, warrants, calls, commitments
or rights of any kind to acquire, any shares of capital stock of any class of
the Company or its Subsidiaries, other than issuances pursuant to the exercise
of Company Options and Company benefit plan obligations disclosed in Section 3.9
of the Disclosure Schedule, in each case which are outstanding on the date
hereof; (iv) transfer, lease, license, sell, mortgage, pledge, dispose of or
encumber any material assets other than in the ordinary and usual course of
business and consistent with past practice; or (v) redeem, purchase or otherwise
acquire directly or indirectly any of its capital stock;
 
     (d) neither the Company nor any of its Subsidiaries shall, except as
required by law or as otherwise expressly provided elsewhere in this Agreement:
(i) grant any increase in the compensation payable or to become payable by the
Company or any of its Subsidiaries to any of their executive officers, key
employees or directors or (A) adopt any new, or (B) amend or otherwise increase,
or accelerate the payment or vesting of the amounts payable or to become payable
under any existing, bonus, incentive compensation, deferred compensation,
severance, profit sharing, stock option, stock purchase, insurance, pension,
retirement or other employee benefit plan agreement or arrangement; or (ii)
enter into any, or amend any existing, employment or severance agreement with
or, except in accordance with the existing written policies of the Company,
grant any severance or termination pay to any officer, director or employee of
the Company or any of its Subsidiaries; provided, however, that the Company or
its Subsidiaries may, in the ordinary course of business, consistent with past
practice, enter into termination agreements or arrangements with employees other
than any EMC Member or any employee with whom the Company has entered into a
letter agreement described in Section 5.5(k) of the Disclosure Schedule (the
"Non-Key Employees"), which agreements and arrangements shall have an aggregate
value in excess of amounts that are payable under the Company's Separation
Policy and Guidelines not to exceed $50,000, and with respect to any individual
Non-Key Employee shall have a value not in excess of $8,000.
 
     (e) neither the Company nor any of its Subsidiaries shall modify, amend or
terminate any of the Material Company Agreements or waive, release or assign any
material rights or claims with respect to such Material Company Agreements,
except in the ordinary course of business and consistent with past practice;
 
     (f) neither the Company nor any of its Subsidiaries shall permit any
material insurance policy naming it as a beneficiary or a loss payable payee to
be cancelled or terminated without notice to Parent, unless equivalent
replacement policies, without lapse of coverage, shall be put in place;
 
                                      A-21
<PAGE>   77
 
     (g) neither the Company nor any of its Subsidiaries shall: (i) incur or
assume any indebtedness for borrowed money or enter into any capital leases or
other arrangements with similar economic effects except pursuant to the Existing
Credit Facilities; (iii) assume, guarantee, endorse or otherwise become liable
or responsible (whether directly, contingently or otherwise) for the obligations
of any other person; (iv) make any loans, advances or capital contributions to,
or investments in, any other person (other than to wholly-owned Subsidiaries of
the Company or customary loans or advances to employees in accordance with past
practice); or (v) enter into any material commitment or transaction (including,
but not limited to, any borrowing, capital expenditure or purchase, sale or
lease of assets) except for purchases and sales of goods and inventories on
commercially reasonable terms with a term of one year or less;
 
     (h) the Company and its Subsidiaries shall not settle or compromise any
claim, liability or obligation which is described in a filing with the SEC and
neither the Company nor any of its Subsidiaries shall pay, discharge or satisfy
any claims, liabilities or obligations (absolute, accrued, asserted or
unasserted, contingent or otherwise), other than the payment, discharge or
satisfaction of any such claims, liabilities or obligations, (x) to the extent
reflected or reserved against in, or contemplated by, the consolidated financial
statements (or the notes thereto) of the Company and its consolidated
Subsidiaries, (y) incurred in the ordinary course of business and consistent
with past practice or (z) which are legally required to be paid, discharged or
satisfied (provided that if such claims, liabilities or obligations referred to
in this clause (z) are legally required to be paid and are also not otherwise
payable in accordance with clauses (x) or (y) above, the Company will notify
Parent in writing if such claims, liabilities or obligations exceed,
individually or in the aggregate, $5,000,000 in value, reasonably in advance of
their payment), provided that notwithstanding anything to the contrary set forth
in this Section 5.1(h), the Company and its Subsidiaries shall not settle or
compromise any claim or litigation brought by any stockholder of the Company
making such claim or bringing such litigation as such a stockholder, either
individually or on behalf of any class, without the written consent of Parent;
 
     (i) neither the Company nor any of its Subsidiaries will adopt a plan of
complete or partial liquidation, dissolution, merger, consolidation,
restructuring, recapitalization or other reorganization of the Company or any of
its Subsidiaries (other than the Merger);
 
     (j) neither the Company nor any of its Subsidiaries will change any method
of accounting or any accounting principle or practice, except for changes
required by a concurrent change in GAAP;
 
     (k) neither the Company nor any of its Subsidiaries will take, or agree to
commit to take, any action that would make any representation or warranty of the
Company contained herein inaccurate at, or as of any time prior to, the
Effective Time;
 
     (l) the Company and its Subsidiaries shall (i) use reasonable efforts to
maintain or otherwise preserve its rights in all of the Intellectual Property
owned by the Company or its Subsidiaries that is material to the consolidated
business and operations of the Company and its Subsidiaries and use reasonable
efforts not to permit any of such Intellectual Property to lapse, expire or go
abandoned by any action or inaction on their part, provided however, for
purposes of this paragraph, Intellectual Property relating to Flexible
Polyolefins (FPO) shall be deemed material to the consolidated business and
operations of the Company and its Subsidiaries; (ii) diligently and responsively
prosecute all applications for patents or registrations before whichever
Governmental Entity the same may be pending; and (iii) not allow any rights with
respect to trademarks, inventions or discoveries material to the Company or its
Subsidiaries to go abandoned for failure to timely file new applications for
patents or registrations corresponding to the subject matter thereof;
 
     (m) neither the Company nor any of its Subsidiaries shall voluntarily make
or agree to make any material change in any Tax accounting method, waive or
consent to the extension of any statute of limitations with respect to income or
other material Taxes, or consent to any material assessment of Taxes, or settle
any judicial proceeding affecting any material amount of Taxes;
 
     (n) neither the Company nor any of its Subsidiaries shall fail to take all
reasonable steps in defense of any claim (which would be disclosable by the
Company in a filing pursuant to the Exchange Act or the Securities Act) asserted
against the Company or any of its Subsidiaries in any proceedings before any
Governmental Entity including, but not limited to, taking all steps (i) to
perfect the appeal of any adverse
 
                                      A-22
<PAGE>   78
 
judgment, ruling, or decision in litigation against the Company by Phillips
Petroleum Company pending in the U.S. District Court in Wilmington, Delaware,
and (ii) to defend the summary judgment in favor of the Company against Phillips
Petroleum Company in litigation decided in the U.S. District Court of Houston,
Texas;
 
     (o) the Company will not, directly or indirectly, amend, supplement or
modify any of the Orrex Governance Documents except as set forth on Section
5.1(o) of the Disclosure Schedule; and
 
     (p) neither the Company nor any of its Subsidiaries will enter into an
agreement, contract, commitment or arrangement to do any of the foregoing, or to
authorize, recommend, propose or announce an intention to do any of the
foregoing.
 
     Section 5.2  No Solicitations.
 
     (a) Neither the Company nor any of its Subsidiaries or Affiliates shall
(and the Company shall use its best efforts to cause its officers, directors,
employees, representatives and agents, including, but not limited to, investment
bankers, attorneys and accountants (collectively, "Representatives"), not to),
directly or indirectly, encourage, solicit, participate in or initiate
discussions or negotiations with, or provide any information to, any
corporation, partnership, person or other entity or group (other than Parent,
any of its Affiliates or Representatives) concerning any merger, consolidation,
tender offer, exchange offer, sale of a material portion or product line of the
assets and business of the Rexene Products Division and/or the CT Film Division
(whether in one or more transactions), sale of shares of capital stock or debt
securities, restructuring, recapitalization, or similar transactions involving
the Company or any Subsidiary, division or operating or principal business unit
of the Company (whether in one or more transactions) (an "Acquisition
Proposal"). The Company further agrees that it will, and will cause its
Representatives to, immediately cease any existing activities, discussions or
negotiations with any parties conducted heretofore with respect to any of the
foregoing. Notwithstanding the foregoing, the Company may, directly or
indirectly, provide access and furnish information concerning its business,
properties or assets to any corporation, partnership, person or other entity or
group (a "Third Party Bidder") pursuant to appropriate confidentiality
agreements, and may negotiate and participate in discussions and negotiations
with such a Third Party Bidder concerning a Superior Proposal (as hereinafter
defined) (i) if such Third Party Bidder without any solicitation, initiation,
encouragement, discussion or negotiation, directly or indirectly, by or with the
Company or its Representatives, has submitted a bona fide written proposal to
the Board of Directors of the Company relating to any such transaction, (ii) if,
in the opinion of the Board of Directors of the Company, after receipt of advice
from independent legal counsel to the Company, the failure to provide such
information or access or to engage in such discussions or negotiations would
result in a breach of their fiduciary duties to the Company's stockholders under
applicable law and (iii) if such Third Party Bidder executes a confidentiality
agreement in reasonably customary form; in such case, nothing contained in this
Section 5.2 shall prohibit the Company or its Board of Directors from taking and
disclosing to the Company's stockholders a position with respect to a tender
offer by a third party pursuant to Rules 14d-9 and 14e-2(a) promulgated under
the Exchange Act or from making such disclosure to the Company's stockholders
which, in the judgment of the Board of Directors with the advice of independent
legal counsel, may be required under applicable law.
 
     (b) The Company shall promptly advise Parent orally and in writing if it is
prepared to provide access and furnish information concerning its business,
properties or assets to a Third Party Bidder as described in Section 5.2(a)
above, and shall at such time inform Parent of the material terms of such Third
Party Bidder's Acquisition Proposal and thereafter promptly inform Parent of any
changes to the material terms of such Third Party Bidder's Acquisition Proposal.
The Company shall give Parent three days' advance notice of (including a copy
of) any agreement to be entered into with respect to such Third Party Bidder's
Acquisition Proposal.
 
     (c) Notwithstanding anything in this Agreement to the contrary, Parent
shall have the right to revise the terms of this Agreement such that this
Agreement contains terms which are identical in all material respects to such
Superior Proposal, and, in such event, Parent and the Company shall so amend
this Agreement and, subject to the terms and conditions of this Agreement as so
amended, consummate the transactions contemplated hereby.
 
                                      A-23
<PAGE>   79
 
     (d) For purposes of this Agreement, the term "Superior Proposal" shall mean
any Acquisition Proposal which a majority of the members of the Company's Board
of Directors determines, in good faith and after receipt of the advice of
outside financial advisors, (i) is more favorable to the holders of Company
Common Stock than the transactions contemplated hereby and (ii) is not subject
to any financing condition.
 
     Section 5.3  Access to Information.
 
     (a) From the date of this Agreement until the Effective Time, the Company
shall (and shall cause each of its Subsidiaries to) afford to Parent and the
Parent Representatives (as defined below) reasonable access during normal
business hours upon reasonable prior notice to all of its, and its
Subsidiaries', books, records, files, documents and Company Agreements and,
during such period, the Company shall (and shall cause each of its Subsidiaries
to) furnish promptly to Parent (i) a copy of each report, schedule, registration
statement and other document filed or received by it during such period pursuant
to the requirements of the federal securities laws and (ii) such other
information including, without limitation, copies of books, records, files,
documents and Company Agreements, concerning the Company's and its Subsidiaries'
business, properties and personnel as Parent may reasonably request; provided,
that Parent and the Parent Representatives will conduct all such inspections in
a reasonable manner. The Company and its Subsidiaries shall provide Parent and
the Parent Representatives with reasonable access during normal business hours
to the EMC Members and such EMC Members shall reasonably cooperate with Parent
and the Parent Representatives and provide Parent and the Parent Representatives
with such information regarding the Company and its Subsidiaries as may be
reasonably requested. Parent and the Company agree to comply with the terms of
the protocol set forth in Section 5.3 of the Disclosure Schedule relating to
Parent's access to and the conduct of the business of the Company between the
date hereof and the Effective Time. The Company and its Subsidiaries shall in
addition use their reasonable efforts to provide Parent and the Parent
Representatives with access to the Representatives, commercial bankers,
actuaries, trustees, outside Plan administrators and consultants of the Company
and its Subsidiaries and to use its best efforts to cause such Representatives,
commercial bankers, actuaries, trustees, outside Plan administrators and
consultants to provide Parent and the Parent Representatives with such
information regarding the Company and its Subsidiaries as may be reasonably
requested. Notwithstanding any of the foregoing, prior to the Effective Time no
access to or disclosure of technical information relating to the FPO plant or
processes shall be given to Parent or its Affiliates. Parent and the Parent
Representatives shall use reasonable efforts to conduct any activities pursuant
to this Section 5.3 in a manner that does not interfere in any material respect
with the management and conduct of the Company's operations. The obligations of
the Company under this Section 5.3(a) are subject to limitations imposed by law
as disclosed to Parent.
 
     (b) Until the Effective Time, Parent and Acquisition will, with respect to
the information furnished to Parent by or on behalf of the Company, and the
Company will, with respect to the information furnished to the Company by or on
behalf of Parent or Acquisition, have the same confidentiality obligations as
set forth in the April 26, 1997 letter agreement between Parent and the Company.
 
     Section 5.4  Further Action; Reasonable Best Efforts.
 
     (a) Upon the terms and subject to the conditions herein provided, each of
the parties hereto agrees to use its reasonable best efforts to take, or cause
to be taken, all action and to do, or cause to be done, all things necessary
under applicable laws and regulations to consummate and make effective the
transactions contemplated by this Agreement, including, without limitation, (i)
to comply promptly with all legal requirements which may be imposed on it with
respect to this Agreement and the transactions contemplated hereby (which
actions shall include, without limitation, furnishing all information required
by applicable law in connection with approvals of or filings with any
Governmental Entity), (ii) to satisfy the conditions precedent to the
obligations of such party hereto, (iii) to obtain any consent, authorization,
order or approval of, or any exemption by, any Governmental Entity or other
public or private third party required to be obtained or made by Parent,
Acquisition, the Company or any of their Subsidiaries in connection with the
Merger or the taking of any action contemplated by this Agreement, (iv) to
effect all necessary registrations and filings and (v) to take any action
reasonably necessary to vigorously defend, lift, mitigate, rescind the effect of
any
 
                                      A-24
<PAGE>   80
 
litigation or administrative proceeding adversely affecting the Merger or this
Agreement, including promptly appealing any adverse court or administrative
decision.
 
     (b) Subject to appropriate confidentiality protections, each of the parties
hereto will furnish to the other parties such necessary information and
reasonable assistance as such other parties may reasonably request in connection
with the foregoing and will provide the other parties with copies of all filings
made by such party with any Governmental Entity and, upon request, any other
information supplied by such party to a Governmental Entity in connection with
this Agreement and the transactions contemplated hereby. Upon the terms and
subject to the conditions herein provided, in case at any time after the
Effective Time any further action is necessary or desirable to carry out the
purposes of this Agreement, the proper officers and/or directors of the parties
shall use their reasonable best efforts to take or cause to be taken all such
necessary action.
 
     (c) Without limiting the generality of the undertakings pursuant to this
Section 5.4, Parent and the Company agree to take or cause to be taken the
following actions: (i) provide promptly to Governmental Entities with regulatory
jurisdiction over enforcement of any applicable antitrust laws ("Government
Antitrust Entity") information and documents requested by any Government
Antitrust Entity or necessary, proper or advisable to permit consummation of the
Merger and the transactions contemplated by this Agreement; (ii) without in any
way limiting the provisions of Section 5.4(c)(i) above, file any Notification
and Report Form and related material required under the HSR Act as soon as
practicable and in any event not later than five (5) business days after the
date hereof, and thereafter use its reasonable efforts to certify as soon as
practicable its substantial compliance with any requests for additional
information or documentary material that may be made under the HSR Act; (iii)
the proffer by Parent of its willingness to (A) sell or otherwise dispose of, or
hold separate and agree to sell or otherwise dispose of, such assets, categories
of assets or businesses of the Company or Parent or either's respective
Subsidiaries, (B) terminate such existing relationships and contractual rights
and obligations (other than a termination that would result in a breach of a
contractual obligation to a third party) and (C) amend or terminate such
existing licenses or other intellectual property agreements (other than a
termination that would result in a breach of a license or intellectual property
agreement with a third party) and to enter into such new licenses or other
intellectual property agreements (and, in each case, to enter into agreements
with the relevant Government Antitrust Entity giving effect thereto) in each
case with respect to the foregoing clauses (A), (B) or (C) if such action is
necessary or reasonably advisable; and (iv) Parent shall take promptly, in the
event that any permanent or preliminary injunction or other order is entered or
becomes reasonably foreseeable to be entered in any proceeding that would make
consummation of the Merger in accordance with the terms of this Agreement
unlawful or that would prevent or delay consummation of the Merger or the other
transactions contemplated by this Agreement, any and all steps (including the
appeal thereof, the posting of a bond or the taking of the steps contemplated by
clause (iii) of this subsection (c)) necessary to vacate, modify or suspend such
injunction or order so as to permit such consummation on a schedule as close as
possible to that contemplated by this Agreement. Each of the Company and Parent
will provide to the other copies of all correspondence between it (or its
advisors) and any Government Antitrust Entity relating to this Merger or any of
the matters described in this Section 5.4(c). Parent and the Company agree that
all telephonic calls and meetings with a Government Antitrust Entity regarding
the Merger or any of the matters described in this Section 5.4(c) shall include
representatives of each of Parent and the Company.
 
     Section 5.5  Employee Benefits.
 
     (a) Fair and Non-Discriminatory Treatment. Except as provided in Section
5.5(b) below, on and after the Effective Time, Parent shall, and shall cause its
Affiliates (including the Surviving Corporation) to, provide on an uninterrupted
basis employee benefits (including, if applicable, group medical and dental,
life insurance, defined contribution retirement plan, short- and long-term
disability, severance, vacation and sick pay) for nonbargaining unit employees
of the Company as of the Effective Time ("Company Employees") which are, in the
aggregate for each such employee, no less favorable than (i) the employee
benefits they were provided immediately prior to the Effective Time or, at
Parent's option, (ii) in the case of employees of the Company's Rexene Products
Division and non-Division Company Employees, the employee benefits provided to
similarly situated employees of Parent and its Affiliates (including Huntsman
Packaging Corporation), and,
 
                                      A-25
<PAGE>   81
 
in the case of employees of the Company's CT Films Division, the employee
benefits provided to similarly situated employees of Huntsman Packaging
Corporation.
 
     (b) Pension Plans.
 
          (1) On and after the Effective Time, Parent shall, or shall cause its
     Affiliates to, take such actions that are necessary and appropriate to
     ensure that the benefits calculated on behalf of Company Employees pursuant
     to the terms of the Rexene Corporation Retirement Plan ("Rexene Plan") (i)
     credit all service with the Parent and its Affiliates after the Effective
     Time for purposes of eligibility and vesting under such plan (including
     eligibility for early or normal retirement) and (ii) include compensation
     with Parent and its Affiliates after the Effective Time in the same manner
     as compensation from the Company for purposes of calculating benefits under
     such plan.
 
          (2) At all times during which Parent or any of its Affiliates
     maintains a defined benefit plan providing benefit accruals for employees
     of Parent or its Affiliates, Parent shall, or shall cause its Affiliates
     (including the Surviving Corporation) to, provide Company Employees with
     past service credit for eligibility and vesting purposes (including
     eligibility for early or normal retirement) and with benefit accruals under
     a defined benefit plan as follows:
 
             (i) in the case of employees of the Company's Rexene Products
        Division and non-Division Company Employees, the retirement benefit they
        would have accrued based solely on their service after the Effective
        Time under a defined benefit plan for similarly situated employees of
        Parent and its Affiliates (including Huntsman Packaging Corporation) and
        without any offset for benefits accrued under the Rexene Plan; and
 
             (ii) in the case of employees of the Company's CT Films Division,
        the retirement benefit they would have accrued based solely on their
        service after the Effective Time under the defined benefit plan for
        similarly situated employees of Huntsman Packaging Corporation and
        without any offset for benefits accrued under the Rexene Plan.
 
          (3) Non-bargaining unit employees of the Company shall be treated as
     newly hired employees of Parent and its Affiliates as of the Effective Time
     solely for purposes of the Parent's money purchase pension plan.
 
     (c) Past Service Credit. Except as provided in Section 5.5(b), all service
with the Company and its Subsidiaries shall be counted as service with Parent
and its Affiliates for all purposes, including eligibility to participate,
vesting and determining the amount of a benefit, but without duplication of
benefits, under the employee benefit plans and compensation practices
(including, if applicable, group medical and dental, life insurance, defined
contribution retirement plan, short- and long-term disability, severance,
vacation and sick pay) covering or otherwise benefitting such employees on and
after the Effective Time. Parent hereby agrees to take or to cause its
Affiliates (including Surviving Corporation) to take such action as may be
necessary or appropriate under all employee benefit plans and compensation
practices covering or otherwise benefitting the Company Employees on or after
the Effective Time to provide for such past service credit.
 
     (d) Co-payments and Deductibles. Each Company Employee shall be given
credit for any deductible or co-payment amounts paid under Plans maintained by
the Company or its Subsidiaries in respect of the Plan year in which the
Effective Time occurs, to the extent that, following the Effective Time, they
participate in comparable plans maintained by Parent or its Affiliates for which
deductibles or co-payments are required. Parent shall also cause each of its and
its Affiliates plans to waive any preexisting condition requirement to the
extent waived under the terms of any Plan maintained by the Company or its
Subsidiaries immediately prior to the Effective Time.
 
     (e) Labor Agreements. To the extent required by applicable law or the terms
of any contract or agreement disclosed on Section 3.20 of the Disclosure
Schedule, Parent shall cause the Surviving Corporation to honor all labor or
collective bargaining agreements pertaining to employees of the Company or any
of its Subsidiaries in effect at the Effective Time.
 
                                      A-26
<PAGE>   82
 
     (f) Non-Qualified Retirement Plans. Parent hereby agrees to honor or to
cause its Affiliates (including the Surviving Corporation) to honor all
liabilities to Company Employees and their beneficiaries arising under all
nonqualified, unfunded deferred compensation programs of Company or its
Subsidiaries listed on Section 5.5(f) of the Disclosure Schedule, including but
not limited to the Rexene Corp. Supplemental Executive Retirement Plan (the
"Rexene SERP"). In particular, Parent hereby agrees that Company shall have the
right to contribute within 3 days prior to the Effective Time to the Rexene
Corp. Supplemental Executive Retirement Trust, an amount necessary to fully fund
all benefit obligations accrued under the Rexene SERP immediately after the
Effective Time (as required under the terms of the Rexene SERP and the Trust)
equal to the lesser of (i) $4,000,000 or (ii) an amount sufficient to purchase
annuities from New York Life Insurance Company, Principal Mutual Life Insurance
Company, John Hancock Mutual Life Insurance Company or Metropolitan Life
Insurance Company or any other reputable insurance company rated at least A++ by
Best and recommended by William M. Mercer Incorporated for the full accrued
benefit of each participant and beneficiary under the Rexene SERP (and the
Trustee shall cause the Trust to purchase such annuities in the name of the
Trust).
 
     (g) Retiree Benefits. Parent hereby agrees to provide, or to cause its
Affiliates to provide, retiree (including early retiree) medical benefits to
individuals who were or would become eligible for such benefits under the
Company's retiree medical plans as of the Effective Time if they terminated
their employment on or before the Effective Time and who terminate or had
terminated their employment on or before two business days following the
Effective Time, comparable to the retiree medical benefits provided to similarly
situated employees of the Company, or at Parent's option, similarly situated
employees of the Parent.
 
     (h) Vacation. Subject to Section 5.5(l) hereof, Parent agrees to or shall
cause its Affiliates (including the Surviving Corporation) to agree to provide
all vacation entitlement to Company Employees for the 1997 calendar year as
determined under the Company's vacation pay policies in effect as of the
Effective Time.
 
     (i) Performance Unit Plans. Parent hereby agrees that the Company shall
terminate, and, subject to Section 5.5(l) hereof, pay on or before the Effective
Time to those Company Employees participating in, the Rexene Corporation
Long-Term Performance Unit Plan, the Rexene Corporation 1996 Performance Unit
Program for Key Employees and the Rexene Corporation 1996 Performance Unit
Program for Executive Officers (each a "PUP" or, collectively, the "PUPs"), all
amounts to which such Company Employees would become entitled on or after the
Effective Time, and such amounts have been calculated assuming (i) Net Operating
Profit (as defined in the PUPs) for the Performance Periods beginning January 1,
1996 and ending as of the Effective Time is determined by averaging (A)
Company's Net Operating Profit for its fiscal year ended December 31, 1996, with
(B) the annualized Net Operating Profit of Company for the period commencing
January 1, 1997 and ending the last day of the calendar month immediately
preceding the Effective Time, (ii) the Ending Invested Capital is determined as
the amount of Invested Capital that is estimated to be invested as of the day
preceding the Effective Time, and (iii) each such participant is entitled to a
pro rata portion of the award to which such participant would have become
entitled under the PUPs assuming he completed the entire Performance Periods,
and any and all rights to any additional payments thereunder shall be null and
void. The calculations of the PUPs shall be made in accordance with the
methodology disclosed on Section 5.5(i) of the Disclosure Schedule.
 
     (j) Annual Incentive Plan. Parent hereby agrees that Company shall
terminate and, subject to Section 5.5(l) hereof, pay on or before the Effective
Time all amounts determined, in accordance with the terms of such plan, to be
payable under the Company's Key Employees Annual Incentive Plan and Executive
Management Committee Annual Incentive Plan (each, an "Annual Incentive Plan")
for the portion of the Company's fiscal year through the Effective Time;
provided, however, that the aggregate amount payable shall not exceed the amount
set forth in Section 5.5(j) of the Disclosure Schedule, multiplied by a
fraction, the numerator of which is the number of days in the fiscal year up to
and including the Effective Time, and the denominator of which is 365.
 
     (k) Severance Pay. Parent hereby agrees to assume and perform or cause its
Affiliates (including the Surviving Corporation) to assume and perform the
letter agreements described in Section 5.5(k) of the Disclosure Schedule. In the
event any Company Employee is terminated without cause within one year
 
                                      A-27
<PAGE>   83
 
following the Effective Time, Parent and its Affiliates shall provide severance
pay to such employee which is not less than the amount such employee would have
received under the severance pay plans and practices in effect immediately prior
to the Effective Time.
 
     (l) EMC and 280G Payments. Except as may otherwise be agreed in writing by
Parent and any member of the EMC with respect to such member only, Parent has
determined that it will not offer any EMC Member a position in the Surviving
Corporation of equal responsibility and authority to such person's position in
the Company and therefore acknowledges and agrees that immediately following the
Effective Time each EMC Member shall be deemed to have resigned his employment
within the meaning of paragraph 2 of his severance agreement with the Company,
dated August 9, 1996 (the "Severance Agreement"). Accordingly, prior to the
Effective Time, the Company will wire transfer to the rabbi trust disclosed in
Section 5.5(l) of the Disclosure Schedule ("The Trust") the total amount, less
any applicable withholding and employment taxes, that each such EMC Member is
and would become entitled to receive upon or following termination of employment
without cause following a change of control of the Company as provided under the
following agreements and plans of the Company or the foregoing provisions of
this Section 5.5: (i) such EMC Member's Severance Agreement; (ii) the cash
payments in respect of Company Options then held by such EMC Member as provided
under Section 2.3 of this Agreement; (iii) the cash payments in respect of the
PUPs; (iv) the cash payments in respect of unused vacation time for 1997; and
(v) to the extent not made prior to such time, payments to be made under the
Company's Annual Incentive Plan. The foregoing amounts shall be calculated by
Price Waterhouse LLP, whose calculation shall be final and binding on Parent,
the Surviving Corporation and the EMC Members absent manifest error. Price
Waterhouse LLP shall consult with Parent's accountant in preparing such
calculations. A copy of such calculations, together with relevant work sheets,
shall be provided by Price Waterhouse LLP to the Parent, the Company and the EMC
Members in an estimated or draft form not fewer than thirty (30) days prior to
the Effective Time and in final form not fewer than three days prior to the
Effective Time. The Company shall provide to Parent not fewer than 30 days prior
to the Effective Time an analysis of the benefits subject to section 280G of the
Code as applied to the employees and former employees of the Company. On the day
following the Effective Time, the Trust shall wire transfer to the accounts
specified by each EMC Member the amounts received by the Trust with respect to
such Member.
 
     (m) COBRA. Parent agrees to provide or to cause its Affiliates to provide
continuation coverage for purposes of Part 6 of Title I of ERISA to former
non-bargaining unit employees of the Company and their eligible dependents
comparable to the benefits, as from time to time in effect, provided to
similarly situated employees of the Company.
 
     Section 5.6  Rights Plan. The Board of Directors of the Company has
approved, and the Company agrees to enter into, an amendment to the Rights
Agreement, dated as of January 26, 1993, as amended, between the Company and
American Stock Transfer & Trust Company (the "Rights Agreement") providing that,
conditioned upon and effective concurrently with the Merger, the Rights shall
terminate and be cancelled without the payment of any consideration therefor.
The form of the amendment to the Rights Agreement shall be presented to Parent
for its review and shall be reasonably satisfactory to Parent prior to its
execution by the Company. The Company agrees that it shall not amend the term
"Acquiring Person" as such term is currently defined in the Rights Agreement.
 
     Section 5.7  Notification of Certain Matters. The Company shall give prompt
notice to Parent and Parent shall give prompt notice to the Company, of (i) the
occurrence or non-occurrence of any event the occurrence or nonoccurrence of
which would cause any representation or warranty contained in this Agreement to
be untrue or inaccurate in any material respect at or prior to the Effective
Time, (ii) any material failure of the Company, Parent or Acquisition, as the
case may be, to comply with or satisfy any covenant, condition or agreement to
be complied with or satisfied by it hereunder and (iii) the commencement or, to
the best of their knowledge, the threat, of any action, suit, claim,
investigation or proceeding which relates to this Agreement or the transactions
contemplated hereby; provided, however, that the delivery of any notice pursuant
to this Section 5.7 shall not limit or otherwise affect the remedies available
hereunder to the party receiving such notice.
 
                                      A-28
<PAGE>   84
 
     Section 5.8  Directors' and Officers' Insurance and Indemnification. Parent
agrees that following the Effective Time it shall indemnify, or shall cause the
Surviving Corporation and its Subsidiaries to indemnify, each person who is now,
or has been at any time prior to the date hereof, an employee, agent, director
or officer of the Company or of any of the Company's Subsidiaries (individually
an "Indemnified Party" and collectively the "Indemnified Parties"), to the same
extent and in the same manner as is now provided in the respective certificates
of incorporation or by-laws of the Company and such Subsidiaries or otherwise in
effect on the date hereof, with respect to any claim, liability, loss, damage,
cost or expense, whenever asserted or claimed ("Indemnified Liability"), based
in whole or in part on, or arising in whole or in part out of, any matter
existing or occurring at or prior to the Effective Time, including, without
limitation, matters arising out of or pertaining to the Merger, this Agreement
or the transactions contemplated by this Agreement. Parent shall, or shall cause
the Surviving Corporation to, maintain in effect for not less than four years
after the Effective Time policies of directors' and officers' liability
insurance equivalent in all material respects to those maintained by or on
behalf of the Company and its Subsidiaries on the date hereof (and having at
least the same coverage and containing terms and conditions which are no less
advantageous to the persons currently covered by such policies) with respect to
matters existing or occurring at or prior to the Effective Time; provided,
however, that if the aggregate annual premiums for such insurance at any time
during such period shall exceed 200% of the premiums paid by the Company and its
Subsidiaries for such insurance for the twelve calendar months immediately
preceding the date of this Agreement (the "Twelve Month Premiums"), then Parent
shall cause the Surviving Corporation to, and the Surviving Corporation shall,
provide the maximum coverage that shall then be available at an annual premium
equal to 200% of the Twelve Month Premiums. Without limiting the foregoing, in
the event any Indemnified Party becomes involved in any capacity in any action,
proceeding or investigation based in whole or in part on, or arising in whole or
in part out of, any matter, including the transactions contemplated hereby,
existing or occurring at or prior to the Effective Time, then to the extent
permitted by law Parent shall, or shall cause the Surviving Corporation to,
periodically advance to such Indemnified Party its legal and other expenses
(including the cost of any investigation and preparation incurred in connection
therewith), subject to the provision by such Indemnified Party of an undertaking
to reimburse the amounts so advanced in the event of a final determination by a
court of competent jurisdiction that such Indemnified Party is not entitled
thereto. Promptly after receipt by an Indemnified Party of notice of the
assertion (an "Assertion") of any claim or the commencement of any action
against him in respect to which indemnity or reimbursement may be sought against
Parent, the Company, the Surviving Corporation or a Subsidiary of the Company or
the Surviving Corporation ("Indemnitors") hereunder, such Indemnified Party
shall notify any Indemnitor in writing of the Assertion, but the failure to so
notify any Indemnitor shall not relieve any Indemnitor of any liability it may
have to such Indemnified Party hereunder except to the extent that such failure
shall have materially prejudiced Indemnitor in defending against such Assertion.
Indemnitors shall be entitled to participate in and, to the extent Indemnitors
elect by written notice to such Indemnified Party within 30 days after receipt
by any Indemnitor of notice of such Assertion, to assume the defense of such
Assertion, at their own expense, with counsel chosen by Indemnitors and
reasonably satisfactory to such Indemnified Party. Notwithstanding that
Indemnitors shall have elected by such written notice to assume the defense of
any Assertion, such Indemnified Party shall have the right to participate in the
investigation and defense thereof, with separate counsel chosen by such
Indemnified Party, but in such event the fees and expenses of such counsel shall
be paid by such Indemnified Party. Notwithstanding the foregoing, in the event
the Indemnified Party reasonably believes, based on the advice of his
independent counsel under applicable standards of professional conduct that
there is reasonably likely to be, with respect to a particular matter, a
conflict on any significant issue between the positions of any two or more
Indemnified Parties or with any Indemnitor (a "Conflict Matter") such
Indemnified Party may select a separate counsel, reasonably acceptable to the
Indemnitors, to represent such Indemnified Party with respect to such Conflict
Matter and the Indemnitor shall pay the reasonable fees and expenses of counsel
so selected by the Indemnified Party in connection with such Conflict Matter. No
Indemnified Party shall settle any Assertion without the prior written consent
of Parent, which, in the case of a settlement solely for a cash payment, shall
not be unreasonably withheld, nor shall Parent or any other Indemnitor settle
any Assertion without either (i) the written consent of all Indemnified Parties
against whom such Assertion was made, or (ii) obtaining an unconditional general
release from the party making the Assertion for all Indemnified Parties as a
condition of such settlement. The provisions of this Section 5.8 are
 
                                      A-29
<PAGE>   85
 
intended for the benefit of, and shall be enforceable by, the respective
Indemnified Parties. In the event the Surviving Corporation or Parent or any of
their successors or assigns (i) consolidates with or merges into any other
Person and shall not be the continuing or surviving corporation or entity of
such consolidation or merger or (ii) transfers all or substantially all of its
properties and assets to any Person, then, and in each case, proper provision
shall be made so that the successors and assigns of the Surviving Corporation or
Parent shall assume Parent's obligations set forth in this Section 5.8.
 
     Section 5.9  Treatment of Public Indebtedness. The Company shall cooperate
with Parent in connection with (i) complying with Section 5.01 of the Indenture
as it applies to the Merger, including without limitation delivering the
officer's certificate and opinion of counsel required thereunder, (ii) preparing
the notices required pursuant to Section 4.14 of the Indenture and (iii)
conferring with the Indenture Trustee concerning such matters as Parent shall
specify.
 
     Section 5.10  Existing Credit Documents. The Company will use reasonable
efforts to (i) assist Parent to negotiate, and (ii) to enter into, an
arrangement with The Bank of Nova Scotia and the other lenders party to the
Credit Agreement, dated as of May 8, 1997, and with the financial institutions
and other parties party to the Participation and Credit Agreement dated as of
May 8, 1997, which arrangements will permit the Company to terminate, on and as
of the Closing Date, such agreements and all related loan and lease
documentation (collectively, the "Existing Credit Documents"), upon payment in
full of all obligations of the Company thereunder, without any requirement that
the Company deliver irrevocable prior notices of termination under the Existing
Credit Documents or to make any payment with respect to the Existing Credit
Documents except upon the occurrence of the Merger.
 
     Section 5.11  Directors' Qualifying Shares. The Company shall cause any
directors' qualifying shares owned by directors of its foreign Subsidiaries to
be transferred (for nominal consideration), as of the Effective Time, in such
amounts and to such of Parent's director nominees for such Subsidiaries as
Parent may specify in writing to the Company.
 
     Section 5.12  Parent Undertaking. Parent shall be responsible for and shall
cause Acquisition to perform all of its obligations hereunder in a timely
manner.
 
                                   ARTICLE VI
 
                                   CONDITIONS
 
     Section 6.1  Conditions to Each Party's Obligation To Effect the
Merger. The respective obligation of each party to consummate the Merger shall
be subject to the satisfaction on or prior to the Closing Date of each of the
following conditions:
 
     (a) This Agreement shall have been approved and adopted by the stockholders
of the Company in accordance with the DGCL;
 
     (b) No Governmental Entity shall have issued any order, and there shall not
be any statute, rule, decree or regulation restraining, prohibiting or making
illegal the consummation of the Merger; and
 
     (c) Any waiting period applicable to the consummation of the Merger under
the HSR Act shall have expired or been terminated.
 
     Section 6.2  Conditions to the Obligation of the Company to Effect the
Merger. The obligation of the Company to effect the Merger is further subject to
the satisfaction or waiver at or prior to the Effective Time of the following
conditions:
 
     (a) The representations and warranties of Parent and Acquisition contained
in this Agreement shall be true and correct in all material respects both when
made and (except for those representations and warranties that address matters
only as of a particular date which need only be true and accurate as of such
date) as of the Effective Time after giving effect to the Merger as if made at
and as of such time; and
 
                                      A-30
<PAGE>   86
 
     (b) Each of Parent and Acquisition shall have performed in all material
respects its obligations under this Agreement required to be performed by it at
or prior to the Effective Time pursuant to the terms hereof.
 
     Section 6.3  Conditions to Obligations of Parent and Acquisition to Effect
the Merger. The obligations of Parent and Acquisition to effect the Merger are
further subject to the satisfaction or waiver at or prior to the Effective Time
of the following conditions:
 
     (a) The representations and warranties of the Company contained in this
Agreement shall be true and correct in all material respects both when made and
(except for those representations and warranties that address matters only as of
a particular date which need only be true and accurate as of such date) as of
the Effective Time after giving effect to the Merger as if made at and as of
such time;
 
     (b) The Company shall have performed in all material respects each of its
obligations under this Agreement required to be performed by it at or prior to
the Effective Time pursuant to the terms hereof; and
 
     (c) Since March 31, 1997, the Company and its Subsidiaries, taken as a
whole, shall not have experienced events, changes or effects, the effect of
which, on an overall basis, would have, or, in the written opinion of an
independent investment banking firm of national stature, would be likely to
have, a Material Adverse Effect, other than resulting from any matter disclosed
in the Company SEC Documents filed prior to the date hereof or in Section 6.3(c)
of the Disclosure Schedule.
 
                                  ARTICLE VII
 
                                  TERMINATION
 
     Section 7.1  Termination. Notwithstanding anything herein to the contrary,
this Agreement may be terminated and the Merger may be abandoned at any time
prior to the Effective Time, whether before or after stockholder approval
thereof:
 
     (a) By the mutual consent of Parent and the Company.
 
     (b) By either the Company or Parent if:
 
          (i) the Merger has not been consummated on or prior to October 31,
     1997; provided, however, that the right to terminate this Agreement under
     this Section 7.1(b)(i) shall not be available to a party whose failure to
     fulfill any obligation under this Agreement has been the cause of, or
     resulted in, the failure of the Merger to occur on or before such date; or
 
          (ii) the stockholders of the Company fail to approve and adopt this
     Agreement at the Special Meeting (including any postponement or adjournment
     thereof); or
 
          (iii) any Governmental Entity shall have issued a statute, order,
     decree or regulation or taken any other action, in each case permanently
     restraining or enjoining the consummation of the transactions contemplated
     by this Agreement and such statute, order, decree, regulation or other
     action shall have become final and non-appealable.
 
     (c) By the Board of Directors of the Company:
 
          (i) if the Board of Directors of the Company shall have (x) withdrawn,
     or modified or changed in a manner adverse to Parent or Acquisition, its
     approval or recommendation of this Agreement in order to approve and permit
     the Company to execute a definitive agreement relating to an Acquisition
     Proposal which is a Superior Proposal, and (y) determined in good faith,
     after receipt of advice from independent legal counsel to the Company, that
     the failure to take such action as set forth in the preceding clause (x)
     would result in a breach of the Board's fiduciary duties under applicable
     law; provided, however, that the Company shall have given Parent three
     days' written notice of any such termination and prior to such termination
     the Company shall have paid Parent the fees required to be paid pursuant to
     Section 8.1(b) hereof; or
 
                                      A-31
<PAGE>   87
 
          (ii) if Parent or Acquisition materially breaches or fails in any
     material respect to perform or comply with any of its covenants and
     agreements contained herein or breaches its representations and warranties
     in any material respect; provided, however, that if any such breach is
     curable by the breaching party through the exercise of the breaching
     party's reasonable best efforts and for so long as such breaching party
     shall be so attempting to cure such breach for a period not to exceed 20
     days, the Company may not terminate this Agreement pursuant to this
     section.
 
     (d) By the Board of Directors of Parent:
 
          (i) if the Company materially breaches or fails in any material
     respect to perform or comply with any of its covenants and agreements
     contained herein or breaches its representations and warranties in any
     material respect; provided, however, that if any such breach is curable by
     the Company through the exercise of its reasonable best efforts and for so
     long as the Company shall be so attempting to cure such breach for a period
     not to exceed 20 days, the Board of Directors of Parent may not terminate
     this Agreement pursuant to this section; or
 
          (ii) if (A) the Board of Directors of the Company shall have
     withdrawn, or modified or changed in a manner adverse to Parent or
     Acquisition its approval or recommendation of this Agreement or shall have
     recommended a Superior Proposal, or shall have executed an agreement in
     principle (or similar agreement) or definitive agreement providing for an
     Acquisition Proposal or other business combination with a Person other than
     Parent, Acquisition or their Affiliates (or the Board of Directors of the
     Company resolves to do any of the foregoing), or (B) any Person or "group"
     (as that term is defined in Section 13(d)(3) of the Exchange Act), other
     than Parent or its Affiliates or any group of which any of them is a
     member, shall have filed a statement on Schedule 13D (or an amendment
     thereto) disclosing beneficial ownership (determined pursuant to Rule 13d-3
     promulgated under the Exchange Act) of more than 15% of any class or series
     of capital stock of the Company, through the acquisition of stock, the
     formation of a group or otherwise.
 
     Section 7.2  Effect of Termination. In the event of the termination of this
Agreement as provided in Section 7.1, written notice thereof shall forthwith be
given to the other party or parties specifying the provision hereof pursuant to
which such termination is made, and this Agreement shall forthwith terminate and
there shall be no liability on the part of Parent, Acquisition or the Company or
their respective directors or officers except that Sections 7.2, 8.1 and 8.10
hereof shall survive any such termination. Without limiting the generality of
the foregoing, Parent, Acquisition and the Company expressly agree that the sole
remedy for any breach of this Agreement (including, without limitation, as
contemplated by Sections 8.1(b) and 8.1(d) hereof) shall be the termination
rights contained in Section 7.1 and any fee payable pursuant to Section 8.1, and
that in the event of any such breach, the breaching party shall have no
liability whatsoever (including, without limitation, liability for actual,
direct, indirect, consequential (including lost profits), punitive, exemplary or
special damages), other than the obligation to pay any fee required to be paid
pursuant to Section 8.1. The parties agree that any such fee constitutes
liquidated damages and not a penalty. No party shall be obligated to pay more
than one such fee, provided that if two fees under differing provisions of
Article VIII hereof would otherwise be payable by a party (at the same time or
at different times) then such party shall be obligated to pay the highest fee
payable. The parties to this Agreement agree that they are relinquishing any
rights they may otherwise have to specific performance of the transactions
herein contemplated.
 
                                      A-32
<PAGE>   88
 
                                  ARTICLE VIII
 
                                 MISCELLANEOUS
 
     Section 8.1  Fees and Expenses.
 
     (a) Except as otherwise contemplated by this Agreement, all costs and
expenses incurred in connection with this Agreement and the consummation of the
transactions contemplated hereby shall be paid by the party incurring such
expenses.
 
     (b) If this Agreement is terminated pursuant to Section 7.1(c)(i) or
7.1(d)(ii)(A), the Company will immediately pay to Parent in immediately
available funds an amount equal to the product of (x) 50c and (y) the number of
outstanding shares of Company Common Stock as of the date of this Agreement. If
this Agreement is terminated pursuant to Section 7.1(d)(i), the Company will
immediately pay to Parent an amount equal to $15 million in immediately
available funds, provided that no amount shall be payable to Parent for a
termination pursuant to Section 7.1(d)(i) if such termination is due to a breach
of the Company's representations and warranties that relate to an event which
occurs or arises after the date of this Agreement and (x) does not relate to an
event which occurred or arose on or prior to the date of this Agreement and (y)
was not caused, directly or indirectly, by the action or inaction of the Company
or any of its Affiliates.
 
     (c) If this Agreement is terminated:
 
          (i) pursuant to Section 7.1(b)(ii);
 
          (ii) pursuant to Section 7.1(b)(i) and the Special Meeting has not
     been held or has been postponed or adjourned until after October 31, 1997
     (so long as the failure to hold the meeting, or such postponement or
     adjournment of the meeting, is not due to Parent's breach of its covenants
     or representations and warranties set forth in this Agreement); or
 
          (iii) pursuant to Section 7.1(d)(ii)(B);
 
and within nine months of such termination set forth in the preceding clauses
(i), (ii), or (iii), a Person, other than Parent or any of its Affiliates:
 
          (I) shall acquire or beneficially own a majority of the then
     outstanding shares of Company Common Stock;
 
          (II) shall enter into a definitive agreement with the Company or any
     of its Affiliates with respect to an Acquisition Proposal; or
 
          (III) shall consummate an Acquisition Proposal with the Company or any
     of its Affiliates,
 
then, immediately upon the occurrence of any one of the events set forth in the
preceding clauses (I), (II), or (III) above, the Company shall pay to Parent in
immediately available funds an amount equal to the product of (x) 50c and (y)
the number of outstanding shares of Company Common Stock as of the date of this
Agreement. For purposes of Sections 8.1(c)(II) and 8.1(c)(III) above, the term
"Acquisition Proposal" shall not include a sale of assets (in one or more
transactions) constituting less than a majority of the consolidated gross asset
value of the Company and its Subsidiaries (a "Minority Asset Sale"), unless such
a Minority Asset Sale constitutes a sale of all or substantially all of the
assets of the Rexene Products Division or the CT Film Division, in which event
such a Minority Asset Sale of all or substantially all of the assets of either
such division shall constitute an Acquisition Proposal for purposes of Sections
8.1(c)(II) and 8.1(c)(III).
 
     (d) If this Agreement is terminated by the Company pursuant to Section
7.1(c)(ii), then Parent shall immediately pay to the Company an amount equal to
$15 million in immediately available funds, provided that no amount shall be
payable to the Company for a termination pursuant to Section 7.1(c)(ii) if such
termination is due to a breach of Parent's representations and warranties that
relate to an event which occurs or arises after the date of this Agreement and
(x) does not relate to an event which occurred or arose on or
 
                                      A-33
<PAGE>   89
 
prior to the date of this Agreement and (y) was not caused, directly or
indirectly, by the action or inaction of Parent or any of its Affiliates. If
this Agreement is terminated by the Company pursuant to Section 7.1(b)(i) and as
of the date of such termination all of the conditions to the Parent's obligation
to consummate the Merger set forth in Sections 6.1 and 6.3 hereof shall have
been fulfilled, then Parent shall immediately pay to the Company an amount equal
to $15 million in immediately available funds.
 
     Section 8.2  Amendment; Waiver.
 
     (a) This Agreement may be amended by the parties hereto, by action taken or
authorized by their respective Boards of Directors, at any time before or after
approval by the stockholders of the Company of the matters presented in
connection with the Merger, but after any such approval no amendment shall be
made without the approval of such stockholders if such amendment changes the
Merger Consideration or alters or changes any of the other terms or conditions
of this Agreement if such alteration or change would materially adversely affect
the rights of such stockholders. This Agreement may not be amended except by an
instrument in writing signed on behalf of each of the parties hereto.
 
     (b) At any time prior to the Effective Time, the parties may (i) extend the
time for the performance of any of the obligations or other acts of the other
parties hereto, (ii) waive any inaccuracies in the representations and
warranties of the other parties contained herein or in any document, certificate
or writing delivered pursuant hereto or (iii) waive compliance with any of the
agreements or conditions of the other parties hereto contained herein. Any
agreement on the part of any party to any such extension or waiver shall be
valid only if set forth in an instrument in writing signed on behalf of such
party.
 
     Section 8.3  Survival. The respective representations and warranties of
Parent, Acquisition and the Company contained herein or in any certificates or
other documents delivered prior to or as of the Effective Time shall not survive
beyond the Effective Time. The covenants and agreements of the parties hereto
(including the Surviving Corporation after the Merger) shall survive the
Effective Time without limitation (except for those which, by their terms,
contemplate a shorter survival period).
 
     Section 8.4  Notices. All notices and other communications hereunder shall
be in writing and shall be deemed given upon (a) transmitter's confirmation of a
receipt of a facsimile transmission provided that a confirmed delivery by a
standard overnight carrier or a hand delivery is made within two business days
of the date such facsimile is sent or (b) confirmed delivery by a standard
overnight carrier or when delivered by hand, addressed at the following
addresses (or at such other address for a party as shall be specified by like
notice):
 
     (a) if to the Company, to:
 
       Rexene Corporation
       5005 LBJ Freeway
       Dallas, Texas 75244
       Telephone: (972) 450-9000
       Facsimile: (972) 450-9017
       Attention: General Counsel
 
         with a copy to:
 
       Weil, Gotshal & Manges LLP
       767 Fifth Avenue
       New York, New York 10153
       Telephone: (212) 310-8000
       Facsimile: (212) 310-8007
       Attention: Dennis J. Block, Esq.
 
     and
 
     (b) if to Parent or Acquisition, to:
 
          Huntsman Corporation
 
                                      A-34
<PAGE>   90
 
        500 Huntsman Way
        Salt Lake City, Utah 84108
        Telephone: (801) 584-5700
        Facsimile: (801) 584-5781
        Attention: General Counsel
 
        with a copy to:
 
        Skadden, Arps, Slate, Meagher
          & Flom LLP
        919 Third Avenue
        New York, New York 10022
        Telephone: (212) 735-3000
        Facsimile: (212) 735-2000
        Attention: Nancy A. Lieberman, Esq.
 
     Section 8.5  Interpretation. When a reference is made in this Agreement to
Sections, such reference shall be to a Section of this Agreement unless
otherwise indicated. Whenever the words "include", "includes" or "including" are
used in this Agreement they shall be deemed to be followed by the words "without
limitation". The phrase "made available" when used in this Agreement shall mean
that the information referred to has been made available if requested by the
party to whom such information is to be made available. The words "Affiliates"
and "Associates" when used in this Agreement shall have the respective meanings
ascribed to them in Rule 12b-2 under the Exchange Act. The phrase "beneficial
ownership" and words of similar import when used in this Agreement shall have
the meaning ascribed to it in Rule 13d-3 under the Exchange Act.
 
     Section 8.6  Section Headings. The headings contained in this Agreement are
for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement.
 
     Section 8.7  Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which shall
be considered one and the same agreement.
 
     Section 8.8  Entire Agreement. This Agreement, together with the schedules,
documents, letter agreements, and instruments referred to herein and therein,
(i) constitutes the entire agreement, and supersedes all prior agreements and
understandings (written and oral), among the parties with respect to the subject
matter hereof and (ii) except as provided in Section 5.8 hereof, is not intended
to confer upon any person other than the parties hereto any rights or remedies
hereunder.
 
     Section 8.9  Severability. If any term, provision, covenant or restriction
of this Agreement is held by a court of competent jurisdiction or other
authority to be invalid, void, unenforceable or against its regulatory policy,
the remainder of the terms, provisions, covenants and restrictions of this
Agreement shall remain in full force and effect and shall in no way be affected,
impaired or invalidated.
 
     Section 8.10  Governing Law; Waiver of Jury Trial; Enforcement. This
Agreement shall be governed and construed in accordance with the laws of the
State of Delaware without giving effect to the principles of conflicts of law
thereof. Each party to this Agreement (a) waives, to the fullest extent
permitted by applicable law, any right it may have to a trial by jury in respect
of any action, suit or proceeding arising out of or relating to this Agreement,
(b) consents to submit itself to the personal jurisdiction of any federal court
located in the State of Delaware or any Delaware state court in the event any
dispute arises out of this Agreement or any of the transactions contemplated by
this Agreement, (c) agrees that it will not attempt to deny such personal
jurisdiction by motion or other request for leave from any such court and (d)
agrees that it will not bring any action relating to this Agreement or any of
the transactions contemplated by this Agreement in any court other than a
federal or state court sitting in the State of Delaware.
 
     Section 8.11  Assignment. Neither this Agreement nor any of the rights,
interests or obligations hereunder shall be assigned by any of the parties
hereto (whether by operation of law or otherwise) without the prior written
consent of the other parties, except that Acquisition may, in its sole
discretion, assign any or
 
                                      A-35
<PAGE>   91
 
all of its rights, interests and obligations hereunder to Parent or any
majority-owned Affiliate of Parent, and except that Parent, Acquisition or any
majority-owned Affiliate of Parent which is an assignee of Acquisition, is
permitted from time to time to collaterally assign all of their respective
right, title and interest in and to this Agreement to their lenders or such
lenders' representative(s) and such collateral assignees shall be permitted to
exercise all of their rights (including foreclosure and assignment of this
Agreement in connection therewith) as a secured creditor in respect thereof
provided, that in no case shall any assignment relieve Parent of any of its
obligations hereunder. Subject to the preceding sentence, this Agreement will be
binding upon, inure to the benefit of and be enforceable by, the parties and
their respective successors and assigns.
 
     IN WITNESS WHEREOF, Parent, Acquisition and the Company have caused this
Agreement to be signed by their respective officers thereunto duly authorized as
of the date first written above.
 
                                        REXENE CORPORATION
 
                                        By:         /s/ A. J. SMITH
                                           -------------------------------------
                                           Name: A. J. Smith
                                           Title: Chairman and Chief Executive
                                            Officer
 
                                        HUNTSMAN CORPORATION
 
                                        By:      /s/ PETER R. HUNTSMAN
                                           -------------------------------------
                                           Name: Peter R. Huntsman
                                           Title: President and Chief Operating
                                            Officer
 
                                        HUNTSMAN CENTENNIAL CORPORATION
 
                                        By:      /s/ PETER R. HUNTSMAN
                                           -------------------------------------
                                           Name: Peter R. Huntsman
                                           Title: President
 
                                      A-36
<PAGE>   92
 
                                                                         ANNEX B
 
              [Letterhead of Schroder Wertheim & Co. Incorporated]
 
                                                                    June 9, 1997
 
The Board of Directors
Rexene Corporation
5005 LBJ Freeway
Occidental Tower, Suite 500
Dallas, TX 75244
 
Members of the Board of Directors:
 
     You have asked us to advise you with respect to the fairness from a
financial point of view to the stockholders of Rexene Corporation ("Rexene" or
the "Company") of the consideration to be received by stockholders pursuant to
the terms of the proposed Agreement and Plan of Merger (the "Merger Agreement"),
among the Company, Huntsman Corporation ("Huntsman") and Huntsman Centennial
Corporation, a wholly owned subsidiary of Huntsman ("HCC"). The Merger Agreement
provides for a merger of HCC with and into the Company pursuant to which each
outstanding share of common stock, par value $.01 per share, of the Company
("Company Common Stock"), other than shares owned by Huntsman, HCC or any direct
or indirect wholly-owned subsidiary of Huntsman or HCC and shares held by
stockholders who perfect appraisal rights under applicable law, will be
converted into the right to receive $16.00 in cash (the "Merger").
 
     Schroder Wertheim & Co. Incorporated ("Schroder Wertheim"), as part of its
investment banking business, is continually engaged in the valuation of
businesses and their securities in connection with mergers and acquisitions,
negotiated underwritings, secondary distributions of listed and unlisted
securities, private placements and valuations for estate, corporate and other
purposes. Schroder Wertheim has acted as financial advisor to Rexene with
respect to the Merger for which we have received fees and will receive
additional fees, a portion of which is contingent upon consummation of the
Merger. Since 1991, Schroder Wertheim has also worked with Rexene on several
corporate transactions for which we have received fees. Ilan Kaufthal, Vice
Chairman of Schroder Wertheim, has been a director of the Company since
September 1992.
 
     In arriving at our opinion, we have, among other things:
 
          i. reviewed the most recent draft of the Merger Agreement;
 
          ii. reviewed the Company's Annual Reports on Form 10-K filed with the
     Securities and Exchange Commission for the fiscal years ended December 31,
     1993, 1994, 1995 and 1996, and Quarterly Report on Form 10-Q for the
     quarter ended March 31, 1997, including the audited and unaudited
     consolidated financial statements of Rexene included therein;
 
          iii. reviewed certain internal financial forecasts and projections for
     Rexene prepared or supplied by Rexene management recently and over the past
     several years;
 
          iv. held discussions with Rexene management regarding the business,
     operations and prospects of the Company;
 
          v. performed various financial analyses, as we deemed appropriate, of
     Rexene using generally accepted analytical methodologies, including: (i)
     the application to the financial results of Rexene of the public trading
     multiples of companies which we deemed comparable; (ii) the application to
     the financial results of Rexene of the multiples reflected in recent
     mergers and acquisitions for businesses which we deemed comparable; (iii)
     discounted cash flow analyses of Rexene's operations; (iv) leveraged buyout
     analyses of Rexene's operations; and (v) leveraged recapitalization
     analyses of Rexene's operations.
 
          vi. reviewed the historical trading prices and volumes of Company
     Common Stock;
 
                                       B-1
<PAGE>   93
 
          vii. performed such other financial studies, analyses, inquiries and
     investigations as we deemed appropriate; and
 
          viii. taken into account the manner in which the financial terms of
     the Merger were negotiated between the Company and Huntsman, as well as the
     results of the extended solicitations of interest by the Company from
     persons thought likely to have a possible interest in acquiring the
     Company.
 
     In our review and analysis and in formulating our opinion, we have assumed
and relied upon the accuracy and completeness of all information supplied or
otherwise made available to us by Rexene or obtained by us from other sources,
and upon the assurance of Rexene's management that they are not aware of any
information or facts that would make the information provided to us incomplete
or misleading. We have not attempted to independently verify any of such
information. We have not undertaken an independent appraisal of the assets or
liabilities (contingent or otherwise) of Rexene, nor have we been furnished with
any such appraisals. With respect to financial forecasts and projections for
Rexene, we have been advised by Rexene, and we have assumed, without independent
investigation, that they have been reasonably prepared and reflect Rexene
management's most currently available estimates and judgments as to the expected
future financial performance of Rexene.
 
     Our opinion is necessarily based upon financial, economic, market and other
conditions as they exist and can be evaluated by us on the date hereof. We
disclaim any undertaking or obligation to advise any person of any change in any
fact or matter affecting our opinion which may come or be brought to our
attention after the date of the opinion unless specifically requested to do so.
 
     Our opinion does not constitute a recommendation as to any action the Board
of Directors of the Company or any stockholder of the Company should take in
connection with the Merger Agreement or any aspect thereof or alternative
thereto. Without limitation to the foregoing, this letter does not constitute a
recommendation to any stockholder with respect to whether to vote in favor of
the Merger, and should not be relied upon by any stockholder as such. In
rendering our opinion, we have not been engaged as an agent or fiduciary of the
Company's stockholders or of any other third party. Our opinion relates solely
to the fairness from a financial point of view to the stockholders of the
Company of the cash consideration of $16.00 per share to be received by such
holders pursuant to the Merger. We express no opinion herein as to the
structure, terms or effect of any other aspect of the Merger or the Merger
Agreement.
 
     This letter is for the information of the Board of Directors of the Company
solely for its use in evaluating the Merger Agreement and may not be relied upon
by any other person, used for any other purpose or reproduced, disseminated,
quoted or referred to in any manner or for any purpose without our prior written
consent.
 
     Based upon and subject to all the foregoing, we are of the opinion, as
investment bankers, that as of the date hereof, the cash consideration of $16.00
per share of Company Common Stock to be received by the holders of such shares
pursuant to the Merger is fair, from a financial point of view, to such holders.
 
                                            Very truly yours,
 
                                            SCHRODER WERTHEIM & CO.
                                            INCORPORATED
 
                                       B-2
<PAGE>   94
 
                                                                         ANNEX C
 
                         [Smith Barney Inc. Letterhead]
 
                                                                    June 9, 1997
 
The Board of Directors
Rexene Corporation
5005 LBJ Freeway
Dallas, Texas 75244
 
Members of the Board:
 
     You have requested our opinion as to the fairness, from a financial point
of view, to the holders of the common stock of Rexene Corporation ("Rexene") of
the consideration to be received by such holders pursuant to the terms and
subject to the conditions set forth in the Agreement and Plan of Merger, dated
as of June 9, 1997 (the "Merger Agreement"), by and among Huntsman Corporation
("Huntsman"), Huntsman Centennial Corporation, a wholly owned subsidiary of
Huntsman ("Acquisition Sub"), and Rexene. As more fully described in the Merger
Agreement, (i) Acquisition Sub will be merged with and into Rexene (the
"Merger") and (ii) each outstanding share of the common stock, par value $0.01
per share, of Rexene (the "Rexene Common Stock") will be converted into the
right to receive $16.00 in cash (the "Merger Consideration").
 
     In arriving at our opinion, we reviewed the Merger Agreement and held
discussions with certain senior officers, directors and other representatives
and advisors of Rexene and certain senior officers and other representatives of
Huntsman concerning the business, operations and prospects of Rexene. We
examined certain publicly available business and financial information relating
to Rexene as well as certain financial forecasts and other information and data
for Rexene which were provided to or otherwise discussed with us by the
management of Rexene. We reviewed the financial terms of the Merger as set forth
in the Merger Agreement in relation to, among other things: current and
historical market prices and trading volumes of Rexene Common Stock; the
historical and projected earnings and other operating data of Rexene; and the
capitalization and financial condition of Rexene. We considered, to the extent
publicly available, the financial terms of other transactions recently effected
which we considered relevant in evaluating the Merger and analyzed certain
financial, stock market and other publicly available information relating to the
businesses of other companies whose operations we considered relevant in
evaluating those of Rexene. In connection with our engagement, we were requested
to approach, and held discussions with, third parties to solicit indications of
interest in a possible acquisition of Rexene. In addition to the foregoing, we
conducted such other analyses and examinations and considered such other
financial, economic and market criteria as we deemed appropriate in arriving at
our opinion.
 
     In rendering our opinion, we have assumed and relied, without independent
verification, upon the accuracy and completeness of all financial and other
information and data publicly available or furnished to or otherwise reviewed by
or discussed with us. With respect to financial forecasts and other information
and data provided to or otherwise reviewed by or discussed with us, we have
discussed with the management of Rexene, and have relied with your consent on,
various operational and financial assumptions as to the future financial
performance of Rexene. We have not made or been provided with an independent
evaluation or appraisal of the assets or liabilities (contingent or otherwise)
of Rexene nor have we made any physical inspection of the properties or assets
of Rexene.
 
     Our opinion is necessarily based upon information available to us, and
financial, stock market and other conditions and circumstances existing and
disclosed to us, as of the date hereof.
 
     Smith Barney has been engaged to render financial advisory services to
Rexene in connection with the proposed Merger and will receive a fee for such
services, a significant portion of which is contingent upon the consummation of
the Merger. We also will receive a fee upon the delivery of this opinion. In the
ordinary course of our business, we and our affiliates may actively trade or
hold the securities of Rexene for our own
 
                                       C-1
<PAGE>   95
 
account or for the account of our customers and, accordingly, may at any time
hold a long or short position in such securities. We have in the past provided
investment banking services to Rexene unrelated to the proposed Merger, for
which services we have received compensation. In addition, we and our affiliates
(including Travelers Group Inc. and its affiliates) may maintain relationships
with Rexene, Huntsman and their respective affiliates.
 
     Our advisory services and the opinion expressed herein are provided for the
information of the Board of Directors of Rexene in its evaluation of the
proposed Merger, and our opinion is not intended to be and does not constitute a
recommendation to any stockholder as to how such stockholder should vote on the
proposed Merger. Our opinion may not be published or otherwise used or referred
to, nor shall any public reference to Smith Barney be made, without our prior
written consent.
 
     Based upon and subject to the foregoing, our experience as investment
bankers, our work as described above and other factors we deemed relevant, we
are of the opinion that, as of the date hereof, the Merger Consideration is
fair, from a financial point of view, to the holders of Rexene Common Stock.
 
                                            Very truly yours,
 
                                            SMITH BARNEY INC.
 
                                       C-2
<PAGE>   96
 
                                                                         ANNEX D
 
                        DELAWARE GENERAL CORPORATION LAW
 
SEC.  262 APPRAISAL RIGHTS
 
     (a) Any stockholder of a corporation of this State who holds shares of
stock on the date of the making of a demand pursuant to subsection (d) of this
section with respect to such shares, who continuously holds such shares through
the effective date of the merger or consolidation, who has otherwise complied
with subsection (d) of this section and who has neither voted in favor of the
merger or consolidation nor consented thereto in writing pursuant to sec.228 of
this title shall be entitled to an appraisal by the Court of Chancery of the
fair value of the stockholder's shares of stock under the circumstances
described in subsections (b) and (c) of this section. As used in this section,
the word "stockholder" means a holder of record of stock in a stock corporation
and also a member of record of a nonstock corporation; the words "stock" and
"share" mean and include what is ordinarily meant by those words and also
membership or membership interest of a member of a nonstock corporation; and the
words "depository receipt" mean a receipt or other instrument issued by a
depository representing an interest in one or more shares, or fractions thereof,
solely of stock of a corporation, which stock is deposited with the depository.
 
     (b) Appraisal rights shall be available for the shares of any class or
series of stock of a constituent corporation in a merger or consolidation to be
effected pursuant to sec.251 (other than a merger effected pursuant to
sec.251(g) of this title), sec.252, sec.254, sec.257, sec.258, sec.263 or
sec.264 of this title:
 
          (1) Provided, however, that no appraisal rights under this section
     shall be available for the shares of any class or series of stock, which
     stock, or depository receipts in respect thereof, at the record date fixed
     to determine the stockholders entitled to receive notice of and to vote at
     the meeting of stockholders to act upon the agreement of merger or
     consolidation, were either (i) listed on a national securities exchange or
     designated as a national market system security on an interdealer quotation
     system by the National Association of Securities Dealers, Inc. or (ii) held
     of record by more than 2,000 holders; and further provided that no
     appraisal rights shall be available for any shares of stock of the
     constituent corporation surviving a merger if the merger did not require
     for its approval the vote of the stockholders of the surviving corporation
     as provided in subsection (f) of sec.251 of this title.
 
          (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
     under this section shall be available for the shares of any class or series
     of stock of a constituent corporation if the holders thereof are required
     by the terms of an agreement of merger or consolidation pursuant to
     sec.sec.251, 252, 254, 257, 258, 263 and 264 of this title to accept for
     such stock anything except:
 
             a. Shares of stock of the corporation surviving or resulting from
        such merger or consolidation, or depository receipts in respect thereof;
 
             b. Shares of stock of any other corporation, or depository receipts
        in respect thereof, which shares of stock or depository receipts at the
        effective date of the merger or consolidation will be either listed on a
        national securities exchange or designated as a national market system
        security on an interdealer quotation system by the National Association
        of Securities Dealers, Inc. or held of record by more than 2,000
        holders;
 
             c. Cash in lieu of fractional shares or fractional depository
        receipts described in the foregoing subparagraphs a. and b. of this
        paragraph; or
 
             d. Any combination of the shares of stock, depository receipts and
        cash in lieu of fractional shares or fractional depository receipts
        described in the foregoing subparagraphs a., b. and c. of this
        paragraph.
 
          (3) In the event all of the stock of a subsidiary Delaware corporation
     party to a merger effected under sec.253 of this title is not owned by the
     parent corporation immediately prior to the merger, appraisal rights shall
     be available for the shares of the subsidiary Delaware corporation.
 
                                       D-1
<PAGE>   97
 
     (c) Any corporation may provide in its certificate of incorporation that
appraisal rights under this section shall be available for the shares of any
class or series of its stock as a result of an amendment to its certificate of
incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation. If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.
 
     (d) Appraisal rights shall be perfected as follows:
 
          (1) If a proposed merger or consolidation for which appraisal rights
     are provided under this section is to be submitted for approval at a
     meeting of stockholders, the corporation, not less than 20 days prior to
     the meeting, shall notify each of its stockholders who was such on the
     record date for such meeting with respect to shares for which appraisal
     rights are available pursuant to subsections (b) or (c) hereof that
     appraisal rights are available for any or all of the shares of the
     constituent corporations, and shall include in such notice a copy of this
     section. Each stockholder electing to demand the appraisal of his shares
     shall deliver to the corporation, before the taking of the vote on the
     merger or consolidation, a written demand for appraisal of his shares. Such
     demand will be sufficient if it reasonably informs the corporation of the
     identity of the stockholder and that the stockholder intends thereby to
     demand the appraisal of his shares. A proxy or vote against the merger or
     consolidation shall not constitute such a demand. A stockholder electing to
     take such action must do so by a separate written demand as herein
     provided. Within 10 days after the effective date of such merger or
     consolidation, the surviving or resulting corporation shall notify each
     stockholder of each constituent corporation who has complied with this
     subsection and has not voted in favor of or consented to the merger or
     consolidation of the date that the merger or consolidation has become
     effective; or
 
          (2) If the merger or consolidation was approved pursuant to sec.228 or
     sec.253 of this title, each constituent corporation, either before the
     effective date of the merger or consolidation or within ten days
     thereafter, shall notify each of the holders of any class or series of
     stock of such constituent corporation who are entitled to appraisal rights
     of the approval of the merger or consolidation and that appraisal rights
     are available for any or all shares of such class or series of stock of
     such constituent corporation, and shall include in such notice a copy of
     this section; provided that, if the notice is given on or after the
     effective date of the merger or consolidation, such notice shall be given
     by the surviving or resulting corporation to all such holders of any class
     or series of stock of a constituent corporation that are entitled to
     appraisal rights. Such notice may, and, if given on or after the effective
     date of the merger or consolidation, shall, also notify such stockholders
     of the effective date of the merger or consolidation. Any stockholder
     entitled to appraisal rights may, within 20 days after the date of mailing
     of such notice, demand in writing from the surviving or resulting
     corporation the appraisal of such holder's shares. Such demand will be
     sufficient if it reasonably informs the corporation of the identify of the
     stockholder and that the stockholder intends thereby to demand the
     appraisal of such holder's shares. If such notice did not notify
     stockholders of the effective date of the merger or consolidation, either
     (i) each such constituent corporation shall send a second notice before the
     effective date of the merger or consolidation notifying each of the holders
     of any class or series of stock of such constituent corporation that are
     entitled to appraisal rights of the effective date of the merger or
     consolidation or (ii) the surviving or resulting corporation shall send
     such a second notice to all such holders on or within 10 days after such
     effective date; provided, however, that if such second notice is sent more
     than 20 days following the sending of the first notice, such second notice
     need only be sent to each stockholder who is entitled to appraisal rights
     and who has demanded appraisal of such holder's shares in accordance with
     this subsection. An affidavit of the secretary or assistant secretary or of
     the transfer agent of the corporation that is required to give either
     notice that such notice has been given shall, in the absence of fraud, be
     prima facie evidence of the facts stated therein. For purposes of
     determining the stockholders entitled to receive either notice, each
     constituent corporation may fix, in advance, a record date that shall be
     not more than 10 days prior to the date the notice is given, provided, that
     if the notice is given on or after the effective date of the merger or
     consolidation, the record date shall be such effective date. If no record
     date is fixed and the notice is given prior to the effective date, the
     record date shall be the close of business on the day next preceding the
     day on which the notice is given.
 
                                       D-2
<PAGE>   98
 
     (e) Within 120 days after the effective date of the merger or
consolidation, the surviving or resulting corporation or any stockholder who has
complied with subsections (a) and (d) hereof and who is otherwise entitled to
appraisal rights, may file a petition in the Court of Chancery demanding a
determination of the value of the stock of all such stockholders.
Notwithstanding the foregoing, at any time within 60 days after the effective
date of the merger or consolidation, any stockholder shall have the right to
withdraw his demand for appraisal and to accept the terms offered upon the
merger or consolidation. Within 120 days after the effective date of the merger
or consolidation, any stockholder who has complied with the requirements of
subsections (a) and (d) hereof, upon written request, shall be entitled to
receive from the corporation surviving the merger or resulting from the
consolidation a statement setting forth the aggregate number of shares not voted
in favor of the merger or consolidation and with respect to which demands for
appraisal have been received and the aggregate number of holders of such shares.
Such written statement shall be mailed to the stockholder within 10 days after
his written request for such a statement is received by the surviving or
resulting corporation or within 10 days after expiration of the period for
delivery of demands for appraisal under subsection (d) hereof, whichever is
later.
 
     (f) Upon the filing of any such petition by a stockholder, service of a
copy thereof shall be made upon the surviving or resulting corporation, which
shall within 20 days after such service file in the office of the Register in
Chancery in which the petition was filed a duly verified list containing the
names and addresses of all stockholders who have demanded payment for their
shares and with whom agreements as to the value of their shares have not been
reached by the surviving or resulting corporation. If the petition shall be
filed by the surviving or resulting corporation, the petition shall be
accompanied by such a duly verified list. The Register in Chancery, if so
ordered by the Court, shall give notice of the time and place fixed for the
hearing of such petition by registered or certified mail to the surviving or
resulting corporation and to the stockholders shown on the list at the addresses
therein stated. Such notice shall also be given by 1 or more publications at
least 1 week before the day of the hearing, in a newspaper of general
circulation published in the City of Wilmington, Delaware or such publication as
the Court deems advisable. The forms of the notices by mail and by publication
shall be approved by the Court, and the costs thereof shall be borne by the
surviving or resulting corporation.
 
     (g) At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled to
appraisal rights. The Court may require the stockholders who have demanded an
appraisal for their shares and who hold stock represented by certificates to
submit their certificates of stock to the Register in Chancery for notation
thereon of the pendency of the appraisal proceedings; and if any stockholder
fails to comply with such direction, the Court may dismiss the proceedings as to
such stockholder.
 
     (h) After determining the stockholders entitled to an appraisal, the Court
shall appraise the shares, determining their fair value exclusive of any element
of value arising from the accomplishment or expectation of the merger or
consolidation, together with a fair rate of interest, if any, to be paid upon
the amount determined to be the fair value. In determining such fair value, the
Court shall take into account all relevant factors. In determining the fair rate
of interest, the Court may consider all relevant factors, including the rate of
interest which the surviving or resulting corporation would have had to pay to
borrow money during the pendency of the proceeding. Upon application by the
surviving or resulting corporation or by any stockholder entitled to participate
in the appraisal proceeding, the Court may, in its discretion, permit discovery
or other pretrial proceedings and may proceed to trial upon the appraisal prior
to the final determination of the stockholder entitled to an appraisal. Any
stockholder whose name appears on the list filed by the surviving or resulting
corporation pursuant to subsection (f) of this section and who has submitted his
certificates of stock to the Register in Chancery, if such is required, may
participate fully in all proceedings until it is finally determined that he is
not entitled to appraisal rights under this section.
 
     (i) The Court shall direct the payment of the fair value of the shares,
together with interest, if any, by the surviving or resulting corporation to the
stockholders entitled thereto. Interest may be simple or compound, as the Court
may direct. Payment shall be so made to each such stockholder, in the case of
holders of uncertificated stock forthwith, and the case of holders of shares
represented by certificates upon the
 
                                       D-3
<PAGE>   99
 
surrender to the corporation of the certificates representing such stock. The
Court's decree may be enforced as other decrees in the Court of Chancery may be
enforced, whether such surviving or resulting corporation be a corporation of
this State or of any state.
 
     (j) The costs of the proceeding may be determined by the Court and taxed
upon the parties as the Court deems equitable in the circumstances. Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
the shares entitled to an appraisal.
 
     (k) From and after the effective date of the merger or consolidation, no
stockholder who has demanded his appraisal rights as provided in subsection (d)
of this section shall be entitled to vote such stock for any purpose or to
receive payment of dividends or other distributions on the stock (except
dividends or other distributions payable to stockholders of record at a date
which is prior to the effective date of the merger or consolidation); provided,
however, that if no petition for an appraisal shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall deliver
to the surviving or resulting corporation a written withdrawal of his demand for
an appraisal and an acceptance of the merger or consolidation, either within 60
days after the effective date of the merger or consolidation as provided in
subsection (e) of this section or thereafter with the written approval of the
corporation, then the right of such stockholder to an appraisal shall cease.
Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery
shall be dismissed as to any stockholder without the approval of the Court, and
such approval may be conditioned upon such terms as the Court deems just.
 
     (l) The shares of the surviving or resulting corporation to which the
shares of such objecting stockholders would have been converted had they
assented to the merger or consolidation shall have the status of authorized and
unissued shares of the surviving or resulting corporation.
 
                                       D-4
<PAGE>   100
 
- --------------------------------------------------------------------------------
 
                               REXENE CORPORATION
 
               PROXY SOLICITED BY THE BOARD OF DIRECTORS FOR THE
   
    SPECIAL MEETING OF STOCKHOLDERS TO BE HELD ON TUESDAY, AUGUST 26, 1997,
    
   
       AT THE WESTIN GALLERIA HOTEL, 13340 DALLAS PARKWAY, DALLAS, TEXAS
    
                           AT 9:00 A.M. CENTRAL TIME.
 
    The undersigned hereby appoints Andrew J. Smith, Bernard J. McNamee and Geff
Perera, or any of them acting in the absence of the other, as attorneys and
proxies of the undersigned, with full power of substitution, to vote all of the
shares of the common stock of Rexene Corporation, a Delaware corporation, held
or owned by the undersigned or standing in the name of the undersigned at the
Special Meeting of Stockholders of the Company and at any adjournment thereof,
and the undersigned hereby instructs said attorneys to vote as follows:
 
1. Proposal to approve and adopt an Agreement and Plan of Merger, dated as of
   June 9, 1997, by and among Huntsman Corporation, a Utah corporation
   ("Huntsman"), Huntsman Centennial Corporation, a Delaware corporation and a
   wholly owned subsidiary of Huntsman ("Sub"), and Rexene Corporation, a
   Delaware corporation (the "Company"), providing for the merger of Sub with
   and into the Company, with the Company continuing as the surviving
   corporation and becoming a wholly owned subsidiary of Huntsman.
 
   [ ] For                      [ ] Against                      [ ] Abstain
 
                                SEE REVERSE SIDE
                 (Continued and to be signed on the other side)
 
- --------------------------------------------------------------------------------
<PAGE>   101
 
- --------------------------------------------------------------------------------
 
                           (Reverse of Form of Proxy)
 
                                         Date:
                                         ---------------------------------------
 
   
                                         ---------------------------------------
    
                                                        Signature
 
                                         ---------------------------------------
                                               Signature, if held jointly
 
                                         (Please sign exactly as shown on
                                         envelope addressed to you. If shares
                                         are held by joint tenants, both should
                                         sign. When signing as attorney,
                                         executor, administrator, trustee or
                                         guardian, please give full title as
                                         such. If a corporation, please sign in
                                         full corporate name by an authorized
                                         officer. If a partnership, please sign
                                         in partnership name by an authorized
                                         person.)
 
    THIS PROXY WILL BE VOTED AS INSTRUCTED. IN THE ABSENCE OF SUCH INSTRUCTIONS,
THIS PROXY WILL BE VOTED "FOR" MATTER (1) ABOVE, AND THE PROXIES HEREIN NAMED
WILL VOTE ON OTHER MATTERS THAT MAY PROPERLY COME BEFORE THE MEETING OR ANY
ADJOURNMENT THEREOF IN ACCORDANCE WITH THEIR JUDGMENT.
 
- --------------------------------------------------------------------------------
<PAGE>   102
 
================================================================================
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ---------------------
                                   FORM 10-K
(MARK ONE)
     [X]ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
        SECURITIES EXCHANGE ACT OF 1934
 
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1996
 
                                       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: 1-9988
 
                               REXENE CORPORATION
             (Exact name of Registrant as Specified in its Charter)
 
<TABLE>
<C>                                              <C>
                    DELAWARE                                        75-2104131
        (State or other jurisdiction of                          (I.R.S. Employer
         incorporation or organization)                        Identification No.)
 
                5005 LBJ FREEWAY                                      75244
                 DALLAS, TEXAS                                      (Zip Code)
    (Address of principal executive offices)
</TABLE>
 
                                 (972) 450-9000
              (Registrant's telephone number, including area code)
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
 
<TABLE>
<CAPTION>
                                                             NAME OF EACH EXCHANGE ON
              TITLE OF EACH CLASS                                WHICH REGISTERED
              -------------------                            ------------------------
<C>                                              <C>
         Common Stock, $0.01 par value                       New York Stock Exchange
          Common Stock Purchase Rights                       New York Stock Exchange
         11 3/4% Senior Notes due 2004                       New York Stock Exchange
</TABLE>
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT:
 
                                 TITLE OF CLASS
                                      None
 
     Indicate by check mark whether the Registrant: (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 [ ]
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of Registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [X]
 
     The aggregate market value of the 17,511,191 shares of common stock held by
non-affiliates of the Registrant was $238,589,977 as of March 14, 1997.
 
             APPLICABLE ONLY TO REGISTRANTS INVOLVED IN BANKRUPTCY
                  PROCEEDINGS DURING THE PRECEDING FIVE YEARS:
 
     Indicate by check mark whether the Registrant has filed all documents and
reports required to be filed by Section 12, 13 or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan
confirmed by a court.  Yes [X]     No  [ ]
 
     Indicate the number of shares outstanding of each of the Registrant's
classes of common stock, as of the latest practicable date.
 
<TABLE>
<CAPTION>
                                                                 NUMBER OF SHARES
                                                                  OUTSTANDING AT
              TITLE OF EACH CLASS                                 MARCH 14, 1997
              -------------------                                ----------------
<C>                                              <C>
         Common Stock, $0.01 par value                              18,819,702
</TABLE>
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
                                     None.
================================================================================
<PAGE>   103
 
                               REXENE CORPORATION
 
                        1996 ANNUAL REPORT ON FORM 10-K
 
                                     PART I
 
ITEM 1. BUSINESS
 
INTRODUCTION
 
     The Company is the result of a combination of three businesses operated by
predecessor entities. In 1958, a subsidiary of The El Paso Company ("El Paso")
constructed a styrene plant in Odessa, Texas. In 1960, El Paso and a predecessor
of Dart Industries Inc. ("Dart") formed a joint venture to produce ethylene,
propylene, polyethylene and polypropylene in Odessa, Texas. El Paso subsequently
acquired the plastic film business of Dart in 1979 and full ownership of these
businesses by 1983. In 1983, El Paso sold its petrochemical, polyolefin and
plastic film business to a management-led group of investors, who consolidated
the businesses under a Delaware corporation named Rexene Corporation ("Old
Rexene"). In 1988, Old Rexene was sold to an investor group organized by an
investment banking firm.
 
     In October 1991, Old Rexene filed a petition for reorganization under the
federal bankruptcy laws. On September 18, 1992, Old Rexene emerged from
bankruptcy in accordance with a plan of reorganization providing for the merger
of Old Rexene into its wholly-owned operating subsidiary, Rexene Products
Company ("Products"), a Delaware corporation, which subsequently changed its
name to Rexene Corporation (the "Reorganization"). Unless otherwise indicated,
Old Rexene, Products and Rexene Corporation and their consolidated subsidiaries
are sometimes collectively or separately referred to as "Rexene" or the
"Company".
 
     The corporate headquarters of the Company are located at 5005 LBJ Freeway,
Dallas, Texas 75244, and its telephone number is 972-450-9000.
 
RECENT DEVELOPMENTS
 
     On July 18, 1996, the Company received an unsolicited proposal from
Huntsman Corporation ("Huntsman") to acquire the outstanding shares of Common
Stock of the Company for $14 per share in a merger transaction, subject to
financing and due diligence. Huntsman subsequently made two revised proposals,
the second of which provided for the acquisition of the outstanding shares of
Common Stock of the Company for $16 per share. After carefully considering
Huntsman's proposals, the Company's Board of Directors determined that none of
the proposals were in the best interests of the Company and its stockholders.
 
     As a result of the Board of Directors' decision to reject the Huntsman
proposals, on January 21, 1997, a group including Wyser-Pratte & Co. Inc. and
Spear, Leeds & Kellogg (the "Dissident Stockholders") commenced a solicitation
of the Company's stockholders in an effort to call a special meeting of the
stockholders of the Company to consider, among other things, the removal and
replacement of the Company's Board of Directors and the amendment of the
Company's bylaws. On February 14, 1997, the Dissident Stockholders announced
receipt of a sufficient number of agent designations to call a special meeting
of the stockholders, which the Board of Directors of the Company has called for
April 30, 1997 (the "Special Meeting").
 
     On March 19, 1997, the Board of Directors elected Stephen C. Swid and
Richard C. Perry as additional members of the Company's Board of Directors. For
information concerning Mr. Swid and Mr. Perry, see "Item 10 -- Directors and
Executive Officers of the Registrant" and "Item 12 -- Security Ownership of
Certain Beneficial Owners and Management." In addition, on March 19, 1997,
Arthur L. Goeschel resigned as a director of the Company.
 
     The Company's Board of Directors also approved a share repurchase program
(the "Share Repurchase Program") of up to $85 million of the Company's Common
Stock. Initial repurchases under the Share
 
                                        1
<PAGE>   104
 
Repurchase Program will be funded through $35 million in borrowings under the
Company's New Credit Agreement (as hereinafter defined). The Company is
anticipating funding the remaining $50 million part of the Share Repurchase
Program through a private placement of its preferred stock (the "Preferred
Stock"). The Company plans to submit the remaining $50 million part of the Share
Repurchase Program for stockholder consideration at the Special Meeting. The
Company intends to purchase shares in open-market transactions from time to time
in the first part of the Share Repurchase Program, at prevailing market prices.
Repurchased shares will be held in the Company's treasury and may be used for
general corporate purposes.
 
PRINCIPAL PRODUCTS
 
     The Company manufactures and markets a wide variety of products through its
two operating divisions, Rexene Products Company division ("Rexene Products")
and the CT Film division ("CT Film"). The products range from value added
specialty products, such as customized plastic films, to commodity
petrochemicals, such as styrene. These products are sold to a diverse customer
base and are used in a wide variety of industrial and consumer-related
applications. The Company's principal products are polyethylene, polypropylene,
REXtac(R) amorphous polyalphaolefin ("APAO") and REXflex(R) flexible polyolefin
("FPO") polymers, styrene and plastic film. In addition, the Company
manufactures, primarily for its own consumption, ethylene and propylene, the two
basic chemical building blocks of the Company's principal products. The Company
manufactures polymers and petrochemicals at an integrated facility in Odessa,
Texas (the "Odessa Facility") which is located near supplies of most of its
feedstocks and plastic film at five plants located in the United States and
England.
 
     In December 1996, the Company completed construction of its new FPO plant
at the Odessa Facility and commenced commercial production of REXflex FPO, a
flexible polyolefin produced by the Company using a proprietary process. The
Company, which is the only producer of FPO, has begun marketing REXflex FPO in
the medical, personal care, automotive and industrial markets. Because of its
flexibility and other performance characteristics, its applications include
medical bags and tubing, nonwovens, personal care products, automotive interior
uses, industrial sheeting, film and insulation.
 
                                        2
<PAGE>   105
 
     Plastic film, polyethylene, polypropylene, APAO, FPO and styrene are used
by the Company's customers in different industrial processes to manufacture many
diverse finished goods. These principal end market products are set forth below:

                   [REXENE PRODUCTS AND PRODUCTION FACIITIES]
 
     The following chart presents the net sales, excluding intercompany sales,
contributed by the Company's products for the years ended December 31 (in
thousands):
 
<TABLE>
<CAPTION>
                                                       1996        1995        1994
                                                     --------    --------    --------
<S>                                                  <C>         <C>         <C>
Polyethylene.....................................    $162,923    $167,873    $145,362
Polypropylene....................................      87,260      90,568      77,544
REXtac APAO......................................      26,637      24,217      18,571
Styrene..........................................      89,647     120,084      89,818
Plastic film.....................................     152,423     170,525     172,618
Other............................................      68,871      41,971      34,044
                                                     --------    --------    --------
                                                     $587,761    $615,238    $537,957
                                                     ========    ========    ========
</TABLE>
 
     No customer accounted for more than 10% of the Company's net sales for the
years ended December 31, 1996, 1995 or 1994.
 
                                        3
<PAGE>   106
 
POLYETHYLENE
 
The Product
 
     Polyethylene represents by volume the most widely produced thermoplastic
resin in the world. The majority of polyethylene produced in the United States
is low density polyethylene ("LDPE") resin. In 1996, approximately 52% of LDPE
capacity in the United States was used to make high pressure low density
polyethylene ("HPLDPE") resin and the balance to make linear low density
polyethylene ("LLDPE"). The Company currently only participates in the HPLDPE
market, but intends to participate in the LLDPE market commencing in the fourth
quarter of 1998 with the completion of the construction of the LLDPE plant at
the Odessa Facility. See "-- Product Development" below.
 
     The Company produces a variety of grades of HPLDPE. Many of these resins
are designed to meet specific customer requirements. Examples of the Company's
differentiated polyethylene resins are ethylene-vinyl acetate copolymer resins
used in film applications that require high clarity, toughness and sealability,
and specialty low-gel resins used in computer circuit board production. The
Company focuses on providing polymer solutions to specific customer needs.
 
Marketing
 
     The Company participates in every principal market for HPLDPE resin,
selling its HPLDPE resins under the REXENE(R) trademark. Prime grade products
are sold domestically and in Canada directly to customers primarily through the
Company's sales staff. Most wide specification products are sold to dealers for
resale. Export sales, other than to Canada, are made directly and through
trading companies and agents.
 
Competition
 
     There are currently 16 domestic producers of LDPE resins, some of which
produce both HPLDPE and LLDPE. In 1996, these producers had an estimated
combined, rated annual production capacity of approximately 15.7 billion pounds.
The largest manufacturer of LDPE is Millennium Petrochemicals, Inc. In 1996, the
other five largest domestic producers of LDPE were Dow Chemical Company, Union
Carbide Corporation, Chevron Chemical Company, Exxon Chemical Company and Mobil
Chemical Company. In 1996, Rexene accounted for approximately 3% of the United
States capacity for LDPE and approximately 5% of the United States capacity for
HPLDPE. Competition for sales is generally based on price for less specialized
products and on product performance, customer service and, to a lesser extent,
price for more specialized products. The Company competes in the polyethylene
market by providing a high level of technical support and customer service and
developing resins which are responsive to customers' specific requirements.
 
POLYPROPYLENE
 
The Product
 
     The Company currently produces a wide variety of polypropylene resin
grades. These include high purity homopolymers and random and impact copolymers
with properties specifically tailored for specialty markets and specific
customer needs. The Company emphasizes the manufacturing of polypropylene resins
for specialty segments of the polypropylene market such as medical, electrical
and automotive applications. The Company is one of only two domestic producers
of a super clean grade of polypropylene utilized for medical applications,
electrical capacitor film and electronics packaging. The Company's line of
impact copolymer polypropylene products is used primarily for automotive
components and other durable goods. Other products include radiation resistant
resins for medical applications requiring radiation sterilization, specialty
coating resins, high clarity products and thermoforming grades for medical and
ophthalmic uses. The Company has been active in making process technology
improvements and works closely with customers in developing new products to meet
their specific needs.
 
                                        4
<PAGE>   107
 
Marketing
 
     The Company sells its polypropylene products under the REXENE(R) trademark.
Domestic and Canadian sales of products are sold primarily through the Company's
sales staff. Most wide-specification products are sold to brokers for resale.
Export sales, other than to Canada, are made directly and through trading
companies.
 
Competition
 
     In 1996, there were 14 domestic producers of polypropylene in the United
States. The industry's estimated combined, rated annual production capacity was
approximately 11.9 billion pounds in 1996. In 1996, the four largest domestic
producers of polypropylene were Montell U.S.A., Inc., Amoco Chemicals
Corporation, Fina, Inc. and Exxon Chemical Company. Competition for sales is
dependent upon a variety of factors, including product price, technical support
and customer service, and the degree of specialization of various grades of
polypropylene. General purpose polypropylene ordinarily competes principally on
the basis of price, while more differentiated polypropylene competes principally
on the basis of product quality, performance specifications and, to a lesser
extent, price. In 1996, Rexene accounted for approximately 2% of United States
production capacity for polypropylene. The Company competes in the polypropylene
market by providing a high level of technical support and customer service
focused on niche markets with specialty products.
 
REXTAC(R) APAO
 
The Product
 
     The Company is one of only two United States on-purpose producers of APAO.
APAO is a special purpose, high quality polymer used primarily in the production
of adhesives and sealants, modified bitumen roofing materials, lamination, wire
and cable. These applications include hot melt adhesives for nonwovens,
packaging, pressure sensitive and assembly applications and as a modifier of
other polymers. Rexene is the only domestic producer of butene copolymer APAO, a
high value product used in hot melt adhesive applications.
 
Marketing
 
     The Company sells APAO under the REXtac trademark. REXtac APAO is sold
domestically and internationally through the Company's sales staff, including a
specialized group that is dedicated to the product line. From time to time, the
Company has supplemented its sales of REXtac APAO with purchases from Ube Rexene
Corporation ("URC"), a former joint venture company located in Japan. In 1996,
purchases from URC were approximately 140,000 pounds.
 
Competition
 
     The Company and Eastman Chemical Company are currently the only domestic
on-purpose producers of APAO. In addition, a few producers of polypropylene also
produce atactic polypropylene ("APP"), which competes with APAO for some less
performance driven uses. Based on management estimates, in 1996, Rexene
accounted for approximately 36% of the United States capacity for APAO and APP.
The Company competes by providing a high level of customer service and
developing products that are responsive to customers' specific requirements.
 
REXFLEX(R) FPO
 
The Product
 
     Using proprietary technology, the Company is the only producer of FPO.
REXflex FPO is a homogenous, reactorproduced flexible polypropylene resin,
produced in a process that controls the crystallinity of the various grades. The
Company produces a variety of grades of both homopolymers and random copolymers.
REXflex
 
                                        5
<PAGE>   108
 
FPO is designed for specific product applications, including medical bags and
containers, tubing, nonwoven personal care products, automotive interior uses,
industrial sheeting, film and insulation.
 
Marketing
 
     FPO is marketed under the REXflex trademark generally and to the automotive
industry as REXENE REXflex FPO. Domestic and Canadian sales are transacted
primarily through the Company's polymer sales staff, while other export sales
are made either directly or through trained agents. The Company intends to
continue to make most sales through its existing sales force in order to
maximize synergies among the Company's range of polymers.
 
Competition
 
     REXflex FPO competes with a variety of specialized or engineering grades of
polymers, including flexible polyvinyl chloride (PVC), polyurethane and various
polyolefins. REXflex FPO will compete with these and other polymers on the basis
of product performance, specifications and price. By mid 1997, the Odessa
Facility is expected to have a total rated annual production capacity for FPO of
75 million pounds.
 
STYRENE
 
The Product
 
     Styrene is an intermediate commodity petrochemical made from ethylene and
benzene and used principally in the production of polystyrene,
acrylonitrile-butadiene-styrene resins, styrene-butadiene latex and rubbers, and
unsaturated polyester resins. Through these products, styrene can be found in
packaging and consumer products, including disposable cups and trays, consumer
electronics, automotive trim, tires and building materials such as carpeting and
insulation.
 
Marketing
 
     The Company sells its styrene directly, using a dedicated petrochemical
sales team. In 1995 and 1996, the Company entered into several long-term styrene
contracts which it believes will reduce its exposure to future price volatility.
Export sales, on a contractual and spot basis, are handled directly and through
international trading companies.
 
Competition
 
     In 1996, there were 10 domestic producers of styrene with an estimated
combined, rated annual production capacity of approximately 12.3 billion pounds.
More than 50% of this capacity is consumed internally by the styrene producers
for the production of derivatives such as polystyrene. In 1996, the five largest
domestic producers of styrene were Arco Chemical Company, Sterling Chemicals,
Inc., Chevron Chemical Company, Dow Chemical Company and Huntsman Chemicals
Corporation. Competition for sales is generally based on price.
 
PLASTIC FILM
 
The Product
 
     The Company, through CT Film, is a major participant in specialty markets
for plastic films. Product applications for these films include disposable
diapers, feminine hygiene products, medical device packaging, tapes, maskants,
industrial packaging, laminations, unsupported overwraps, and greenhouse and
agricultural applications. CT Film's products are manufactured principally with
its own proprietary processes.
 
     CT Film develops specialty formulations of films to meet customer
specifications for various highly specific and value added applications.
Examples include low gel films developed for photo-resistant applications,
MAXILENE(R) lamination films, thin gauge barrier films for feminine hygiene
products and medical applications. CT Film produces coextruded films for forming
webs, composite laminations, as well as elastomeric films for surgical products.
 
                                        6
<PAGE>   109
 
     A general trend by disposable diaper manufacturers towards thinner diaper
backsheet materials reduced the volume of film products sold into this market in
1995 and 1996. Since the disposable diaper market was the largest customer
segment in the film division, this trend significantly affected its sales
volumes and operating results in 1996 and 1995. However, CT Film is developing a
number of strategies intended to increase its sales and profits, including
developing a new generation of film products for the disposable diaper market,
broadening production capabilities, globalizing sales and marketing efforts and
developing new film products for the medical, packaging and agricultural
markets. In addition, CT Film is implementing targeted cost reductions.
 
Marketing
 
     Domestically, CT Film ships film from its plants in Chippewa Falls,
Wisconsin, Clearfield, Utah, Dalton, Georgia, and Harrington, Delaware.
Internationally, plastic film is shipped from United States plants and CT Film's
European subsidiary, Rexene Corporation Limited, located in Scunthorpe, England.
The Company's customers include a number of Fortune 500 companies. Products are
sold primarily through the Company's plastic film sales and marketing staff.
 
Competition
 
     The United States film industry is highly fragmented, with over 450
producers ranging from a few large national producers, such as CT Film, to many
small, regional producers. CT Film's principal competitors include Tredegar
Industries, Exxon Chemical Company, Clopay Corporation, Blessings Company,
Huntsman Corporation, DuPont of Canada and Printpack Inc. The plastic film
business is based on custom formulations to meet customer needs. Competition is
based on the quality and properties of the film as well as price. CT Film seeks
to develop innovative products to meet customer needs and competes by segmenting
market niches and being responsive to customers' specific requirements.
 
EXPORT SALES
 
     The following chart summarizes revenues from export sales, and the
percentages of net sales represented by export sales, for the indicated years
ended December 31 (in thousands):
 
<TABLE>
<CAPTION>
                                                         1996       1995       1994
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
Export sales........................................    $54,138    $77,508    $52,382
Percentage of net sales.............................         9%        13%        10%
</TABLE>
 
     Export sales decreased from 1995 to 1996 principally due to the decline in
the chemical market in the Far East for styrene and polymer products. The
majority of the Company's export sales were to foreign companies through agents
and international trading companies.
 
PRODUCT DEVELOPMENT
 
     The Company continually seeks to enhance and expand its portfolio of
specialty polymers through sustained in-house research and development and
licensing arrangements. For example, in late 1995, the Company licensed LLDPE
and high density polyethylene technology from Stamicarbon, a licensing
subsidiary of DSM. When planned production commences in the fourth quarter of
1998, Rexene's LLDPE plant in Odessa, Texas will be the first North American
production facility to make LLDPE using the DSM "Compact(R)" process. This
process refers to the plant's small physical size, which is well suited to
efficiently produce a broad range of high quality products. The octene
copolymers produced by this process are consistent with the Company's strategy
of producing higher quality, value-added products. In addition, through its
sales and marketing staffs, the Company works to develop new, and modify
existing, products to address specific customer needs.
 
     The Company has spent between $7.1 million and $9.5 million per year for
research and development during each of the last three fiscal years and
anticipates spending approximately $9.3 million for research and development in
1997.
 
                                        7
<PAGE>   110
 
RAW MATERIALS FOR PRINCIPAL PRODUCTS
 
     Principal raw materials purchased by the Company consist of ethane and
propane extracted from natural gas liquids ("NGL"), propylene and benzene (all
four of which are referred to as "feedstocks") for the polymer and styrene
businesses and polyethylene resins for the film business. The prices of
feedstocks fluctuate widely based upon the prices of natural gas and oil,
weather conditions affecting the demand for natural gas and other factors.
During 1996, feedstocks accounted for approximately 30% of the Company's total
cost of sales. As a result, the Company's ability to pass on increases in raw
material costs to customers has a significant impact on operating results. Low
industry inventory levels of crude oil, natural gas and NGL feedstocks and
unexpected supply disruptions caused feedstock prices to increase during the
first nine months of 1996. Feedstock prices for ethane and propane increased
significantly during the fourth quarter principally due to low inventory levels
and an increase in home heating demand caused by an unusually cold winter
pattern. Feedstock prices decreased midway in the first quarter of 1997.
 
     The Odessa Facility obtains a combination of pure and mixed streams of NGL
from NGL pipelines and NGL extraction plants located in west Texas and uses such
streams to obtain ethane and propane feedstocks for the Company's olefins plant.
In 1996, the Odessa Facility consumed approximately 569 million and 498 million
pounds of ethane and propane, respectively, and in 1995, the Odessa Facility
consumed ethane and propane of approximately 530 million and 511 million pounds,
respectively. In 1996, the Company produced all of its ethylene and 50% of its
propylene requirements for the Odessa Facility. The feedstock supplies available
in Odessa are currently adequate for the Company's requirements. The Company has
storage capacity for an approximately fifteen-day supply of feedstocks.
 
     The Odessa Facility uses benzene and ethylene to produce styrene. In 1996,
substantially all of the Company's benzene purchases were under contracts from
Gulf Coast and Midwest producers at prevailing contract prices, with the balance
of its needs filled by purchases on the spot market.
 
     The principal feedstocks for the Company's captive ethylene and propylene
production at the Odessa Facility are ethane and propane. Ethane and propane
prices are established in Mont Belvieu, Texas (Gulf Coast) according to
prevailing market conditions, but the Company is able to purchase NGL containing
ethane and propane in west Texas at prices discounted from the prevailing
reported average Mont Belvieu, Texas prices. These discounts reflect a
significant portion of the cost for the producers to transport NGL containing
ethane and propane to Mont Belvieu, Texas and to fractionate them into pure
ethane and propane. In 1996, the Company acquired all of the Odessa Facility's
requirements for ethane and propane under such arrangements.
 
     CT Film raw materials consist principally of polyethylene resins and
additives. CT Film obtains its raw materials from a variety of sources
(including the Odessa Facility) and has been able to order these materials in
advance as its needs dictate. CT Film has adequate storage capabilities for its
raw materials.
 
EMPLOYEES AND LABOR RELATIONS
 
     As of March 14, 1997, the Company employed approximately 1,320 persons,
including approximately 120 union employees at the CT Film facility in Chippewa
Falls, Wisconsin. The Company and the union are parties to a collective
bargaining agreement through March 2, 2000.
 
TRADEMARKS AND PATENTS
 
     The Company is the owner of many United States and foreign patents and uses
trade secrets, including substantial know-how, which relate to its polyethylene,
polypropylene, REXtac APAO, REXflex FPO and plastic film products. Although
patents and trade secrets are important to the Company, permitting it to retain
ownership and use of its technological advances, the Company does not believe
that the loss of any patent would have a material adverse effect on its
financial condition. The Company also uses the technology of others under
license agreements in certain of its manufacturing operations.
 
                                        8
<PAGE>   111
 
     REXENE(R), REXtac(R) and REXflex(R) are important trademarks for the
Company's resins and are widely known among purchasers of these products. The
Company is the owner of other trademarks, including Maxilene(R), used on or in
connection with its products.
 
     The Company has been sued by Phillips Petroleum Company for alleged
infringement of its crystalline and block co-polymer polypropylene patents. The
Company believes that, based upon its current knowledge of the facts of each
case, the Company has meritorious defenses to the claims made and intends to
defend each lawsuit vigorously. See "Item 3 -- Legal Proceedings."
 
ENVIRONMENTAL AND RELATED REGULATION
 
General
 
     The Company, and the industry in which it competes, is subject to extensive
environmental laws and regulations and is also subject to other federal, state
and local laws and regulations regarding health and safety matters. The Company
believes that its business, operations and facilities generally have been and
are being operated in compliance in all material respects with applicable
environmental and health and safety laws and regulations, many of which provide
for substantial fines, criminal sanctions, and in certain extreme circumstances,
temporary or permanent plant closures for violations. Nevertheless, from time to
time, the Company has received notices of alleged violations of certain
environmental laws and has endeavored to remedy such alleged violations
promptly. The ongoing operations of chemical manufacturing plants entail risks
in these areas and there can be no assurance that material costs or liabilities
will not be incurred in the future.
 
     In addition, future developments, such as increasingly strict requirements
of environmental and health and safety laws and regulations and enforcement
policies thereunder could bring into question the handling, manufacture,
storage, use, emission or disposal of substances or pollutants at the Company's
facilities. Changes to or reinterpretations of existing laws could materially
and adversely affect the Company's business and results of operations.
 
     The Company's operating expenditures for environmental remediation,
compliance and waste disposal were approximately $7.6 million and $8.3 million
in 1996 and 1995, respectively. In 1996 and 1995, the Company also spent
approximately $1.4 million and $1.2 million, respectively, relating to
environmental capital expenditures. In 1997, the Company anticipates spending
approximately $8.4 million for environmental remediation, compliance and waste
disposal. Of that amount, expenditures relating to remediation are projected to
be approximately $2.3 million in 1997. For the foreseeable future, the Company
expects to incur approximately $2 million to $4 million per year in capital
spending to address the requirements of environmental laws. Additionally, the
Company expects to spend approximately $5.9 million in 1997 for the completion
of an alternative wastewater disposal facility. Annual amounts could vary
depending on a variety of factors, such as the control measures or remedial
technologies ultimately required and the time allowed to meet such requirements.
 
     The Company believes that, in light of its historical expenditures and
expected future results of operations, it will have adequate resources to
conduct its operations in compliance with currently applicable environmental,
health and safety laws and regulations. However, in order to comply with
changing facility permitting and regulatory standards, the Company may be
required to make additional significant site or operational modifications that
are not currently contemplated. Further, the Company has incurred and may in the
future incur liability to investigate and clean up waste or contamination at its
current or former facilities, or which it may have disposed of at facilities
operated by third parties. The Company has approximately $18.4 million accrued
in the December 31, 1996 balance sheet as a preliminary estimate of its total
potential environmental liability with respect to investigating and remediating
known and assessed site contamination. Extensive environmental investigation of
the groundwater, soils and solid waste management has been conducted at the
Odessa Facility. Risk assessments have been completed for a number of these
facilities and corrective measures have been defined and conducted. Approval of
certain waste management unit closures required a public notice period that
expired at the end of February 1997. The Company has received approval to allow
closure of five solid waste management units, which will permit a reduction in
the accrual for potential environmental liability of approximately $9.0 million.
The Company continually reviews its estimates of
 
                                        9
<PAGE>   112
 
potential environmental liabilities. However, no assurance can be given that all
potential liabilities arising out of the Company's present or past operations
have been identified or fully assessed or that the amounts that might be
required to investigate and remediate such conditions will not be significant to
the Company.
 
     The Company does not currently carry environmental impairment liability
insurance to protect it against such contingencies because the Company has found
such coverage available only at great cost and with broad exclusions.
 
Wastewater
 
     The Company currently disposes of wastewater from the Odessa Facility
through injection wells operated under permits from the Texas Natural Resource
Conservation Commission ("TNRCC"). TNRCC has stated that it does not intend to
renew the permits after they expire in December 1997. Further, TNRCC may order
the Company to cease using one or more of the wells if certain periodic testing
results indicate that continued injection cannot be conducted safely. In order
to provide a long range, cost effective wastewater disposal solution, the
Company has entered into an agreement with the City of Odessa and the Gulf Coast
Waste Disposal Authority pursuant to which the latter will acquire, modify and
operate a publicly-owned treatment works ("POTW") to dispose of the Company's
and a portion of the City of Odessa's wastewater. The parties have completed
detailed engineering work and construction to modify the existing municipal
facility is in progress with a view to having the POTW operational by September
1997. In total, the modification of the facility is expected to cost
approximately $8 million, including expenditures of $5.9 million during 1997.
Although no assurances can be given, the Company believes that it will be able
to use its existing wells until it develops this alternative wastewater disposal
system. However, if the Company is forced to cease using its injection wells
before the POTW is operational, such loss of capacity could have a material
adverse effect on the Company's financial condition, results of operations or
cash flows.
 
Solid Wastes
 
     In March 1994, TNRCC granted the Company a permit to operate three
hazardous waste management units at the Odessa Facility as
treatment/storage/disposal facilities under the Resource Conservation and
Recovery Act. This permit is accompanied by a compliance plan requiring the
Company to take corrective action with regard to existing contamination at the
Odessa Facility. Pursuant to this compliance plan, the Company has installed
three groundwater recovery systems and must complete an investigation into the
extent of on-site contamination, conduct a soils risk assessment to determine
the level of risk it presents to human health and the environment, develop a
corrective measures study on the ways to remediate the contamination, and
implement a remediation plan approved by TNRCC.
 
     Investigations into the extent of contamination associated with waste
management facilities and the development of risk assessments regarding soils
and several of the facilities have been conducted. Based upon the results of its
continuing investigations of on-site contamination, the Company believes that
implementation of any corrective action plan will not have a material adverse
effect on its financial condition. However, no assurance can be given that all
conditions that may require corrective action have been identified, or that the
amounts that might be required to implement that plan will not be significant to
the Company.
 
Air Emissions
 
     In 1990, Congress amended the federal Clean Air Act to require control of
certain emissions not previously regulated, some of which are emitted by the
Company's facilities. This legislation will require the Company (and others in
the industry with such emissions) to implement additional pollution control
measures. Some of the regulations detailing these additional control measures
have not yet been promulgated. The Company expects that modifications required
by the currently published regulations can be accomplished within the projected
capital budget, but it can give no assurance that the costs it may incur to
comply with regulations that have not yet been issued will not be significant.
 
     The Company operates in accordance with air permitting regulations in the
states where its facilities are located. Most plant operations are governed by
existing air permits. There are, however, two plants at the
 
                                       10
<PAGE>   113
 
Odessa Facility that are exempt from permit requirements. Permitting of these
facilities is being conducted currently in preparation for upcoming federal air
requirements associated with Title V permits.
 
Additional Environmental Issues
 
     The federal Comprehensive Environmental Response Compensation and Liability
Act, as amended, and similar laws in many states, impose liability for the
clean-up of certain waste sites and for related natural resource damages,
without regard to fault or the legality of the waste disposal. Liable persons
generally include the site owner or operator, former site owners and persons
that disposed or arranged for the disposal of hazardous substances found at
those sites. The Company has sent wastes from its operations to various third-
party waste disposal sites. From time to time the Company receives notices from
representatives of governmental agencies and private parties contending that the
Company is potentially liable for a portion of the investigation and remediation
at such third-party and currently and formerly-owned sites. Although there can
be no assurance, the Company does not believe that its liabilities for
investigation and remediation of such sites, either individually or in the
aggregate, will have a material adverse effect on the Company.
 
ITEM 2. PROPERTIES
 
     The Company operates manufacturing facilities at six locations, five of
which are in the United States and one in England.
 
     The Company manufactures its polymers and petrochemicals at the Odessa
Facility. The Odessa Facility is located on an approximately 875-acre site in
west Texas which contains plants producing polyethylene, polypropylene, APAO,
FPO and styrene, as well as ethylene and propylene primarily for captive use.
The Odessa Facility is located near four NGL pipelines from which it derives its
supply.
 
     The polyethylene plant in Odessa, Texas has been in operation since 1961
and has a total rated annual production capacity of approximately 430 million
pounds.
 
     The polypropylene plant in Odessa, Texas has been in operation since 1964
and, in 1996, had a total rated annual production capacity of approximately 180
million pounds. In the first half of 1997, total rated annual production
capacity is expected to increase to 210 million pounds as a result of an ongoing
debottlenecking project. REXtac APAO is produced in a former polypropylene plant
that was converted in 1986 and by the end of 1996 had a total rated annual
production capacity of approximately 65 million pounds.
 
     The REXflex FPO plant in Odessa, Texas commenced commercial production in
December 1996 and by mid 1997 is expected to have a total rated annual
production capacity of approximately 75 million pounds.
 
     The styrene plant in Odessa, Texas has been in operation since 1958 and has
a total rated annual production capacity of approximately 320 million pounds.
 
     The olefins plant in Odessa, Texas has been in operation since 1961 and as
of December 31, 1996, had a total rated annual production capacity for ethylene
of approximately 600 million pounds and for propylene of approximately 240
million pounds. In December 1995, the Company announced a capital project
totaling an estimated $89 million towards the expansion and modernization of the
olefins plant. The proposed modernization and expansion, scheduled for
completion in late 1998, will include a debottlenecking of the Company's
ethylene production process which is estimated to increase ethylene capacity to
approximately 800 million pounds and reduce annual operating costs by $25
million.
 
     During 1996, the polymer and styrene plants in Odessa, Texas (except the
FPO plant) operated at rates in excess of 97% of their total rated annual
production capacity. Although several of these plants first began production
more than thirty years ago, the Company believes these plants are in good
operating condition. In December 1995, the Company announced its plan to build a
new LLDPE plant at the Odessa Facility. The plant, which is scheduled for
completion in 1998, is expected to have a total rated annual production capacity
of 220 million pounds.
 
     CT Film has four domestic manufacturing facilities located in Chippewa
Falls, Wisconsin, Clearfield, Utah, Dalton, Georgia and Harrington, Delaware,
with a total rated annual production capacity of approxi-
 
                                       11
<PAGE>   114
 
mately 225 million pounds. In 1996, these plants, which produce blown and cast
plastic film, operated at an average utilization rate of approximately 71%. See
"Item 7 -- Management's Discussion and Analysis of Financial Condition and
Results of Operations." The fifth CT Film manufacturing facility, located in
England, commenced commercial production in September 1994 and currently has a
total rated annual production capacity of 30 million pounds. These five CT Film
plants, which commenced operations between 1948 and 1994, are in good operating
condition.
 
     The Company owns all of its manufacturing facilities, except for the CT
Film plant in Utah, which is held under a long-term lease. All of the United
States plants, except the styrene plant, are subject to encumbrances which
secure borrowings under the Amended Credit Agreement. The styrene plant in
Odessa, Texas is subject to encumbrances which secure the obligation to repay an
advance payment from a styrene customer.
 
     The Company leases its executive offices in Dallas, Texas. Additionally,
the Company owns off-site warehouses in Odessa, Texas and leases off-site
warehouses near its manufacturing facilities in Delaware and Wisconsin.
 
ITEM 3. LEGAL PROCEEDINGS
 
Shareholder Litigation
 
     On July 23, 1996, the Company was served with a purported stockholder class
action lawsuit filed in the Chancery Court of the State of Delaware, in and for
New Castle County, arising from the Company's rejection of the unsolicited offer
from Huntsman to purchase the outstanding shares of common stock of the Company.
The lawsuit names the Company and each of its directors as defendants. The
complaint alleges that the defendant directors breached their fiduciary duty to
stockholders by refusing to attempt in good faith to maximize stockholder value
in the sale of the Company and engaging in a plan to thwart and reject offers
from third parties including Huntsman in order to entrench management. Plaintiff
seeks certification of the lawsuit as a class action, an order requiring
defendants to take various actions including exposing the Company to the market
place in an effort to create an auction of the Company and an unspecified amount
of damages. The Company is also aware of two other similar lawsuits that are
pending in the Chancery Court. The plaintiffs' counsel in these cases has agreed
to an indefinite extension of defendants' answer date. Under the agreement,
defendants do not need to respond to the complaints until notified to do so by
plaintiffs' counsel.
 
Phillips Block Copolymer Litigation
 
     In March 1984, Phillips Petroleum Company ("Phillips") filed a lawsuit
against the Company seeking injunctive relief, an unspecified amount of
compensatory damages and treble damages. The complaint alleges that the
Company's copolymer process for polypropylene infringes Phillips' two "block"
copolymer patents, the last of which expired in 1994. This action, which was
originally filed in Illinois, was transferred to the United States District
Court for the Southern District of Texas, Houston Division. After discovery
proceedings were completed, the Company filed a motion for summary judgment.
Phillips filed a motion for partial summary judgment. Pursuant to an agreement
among the parties, the court appointed a special master who conducted a hearing
on these motions and thereafter recommended to the court that the Company's
motion be granted and Phillips' motion be denied. Thereafter, Phillips filed
motions to disqualify the special master, to reject the recommendation of the
special master and to enter partial summary judgment for Phillips. In 1993, the
court entered an order denying Phillips' motion to disqualify the special
master. On December 23, 1996, the court entered a final judgment in favor of the
Company after granting the Company's motion for summary judgment. Phillips has
filed a notice of appeal. In the Company's bankruptcy proceeding in 1992,
Phillips filed a proof of claim seeking in excess of $108 million based upon the
allegations in this litigation. The Company objected to the claim and elected to
leave the legal, equitable and contractual rights of Phillips unaltered, thereby
allowing this litigation to proceed without regard to the bankruptcy proceeding.
 
Phillips Crystalline License Litigation
 
     In May 1990, Phillips filed a lawsuit against the Company in the United
States District Court for the District of Delaware (the "Trial Court") seeking
injunctive relief, an unspecified amount of compensatory
 
                                       12
<PAGE>   115
 
damages, treble damages and attorneys' fees, costs and expenses. The complaint
alleged that the Company was infringing Phillips' Patent No. 4,376,851 (the
" '851 Patent") for crystalline polypropylene. Pursuant to a License Agreement
dated as of May 15, 1983, as amended (the "License Agreement"), Phillips granted
the Company a non-exclusive license to make, use and sell crystalline
polypropylene covered by the '851 Patent. The complaint alleged that effective
April 21, 1990, Phillips terminated the License Agreement because it believed
that, by the terms of the License Agreement, all conditions precedent to such
termination had occurred. The complaint further alleged that, without an
effective License Agreement, the Company's continuing use of the '851 Patent
constitutes an infringing use. At trial in October 1994, Phillips sought damages
of approximately $15.5 million, plus interest and fees, for alleged infringement
for the period between April 21, 1990 and trial. On June 19, 1995, the Trial
Court entered judgment in favor of the Company and concluded that Phillips had
not properly terminated the License Agreement. Phillips appealed the Trial
Court's judgment. On March 27, 1996, the Court of Appeals for the Federal
Circuit entered an order reversing the Trial Court's judgment, holding that the
termination notice was sufficient and remanding the action to the Trial Court.
The Trial Court must now review Phillips' claims and other defenses asserted by
the Company that were not previously ruled on in order to enter a new judgment.
 
Odessa Residents' Tort Litigation
 
     On April 15, 1994, the national and state chapters of the NAACP and
approximately 770 residents of a neighborhood approximately one mile northwest
of the Shell Oil Company ("Shell"), the Company and Dynagen, Inc. ("Dynagen")
plants in Odessa, Texas petitioned the State District Court in Odessa, Texas to
intervene in a previously existing lawsuit against Dynagen to (a) add as
additional defendants the Company, Shell and General Tire Corporation (the
parent company of Dynagen) and (b) have the litigation certified as a class
action. The plaintiffs' petition seeks an unspecified amount of money damages
for past, present and future injuries to plaintiffs' health, wrongful death,
loss of consortium and reduction in property values; the conduct of and payment
for property clean up, remediation and relocation costs; payment of expenses for
medical testing and monitoring; funding of pollution and health studies;
attorney's fees; punitive damages and injunctive relief. Plaintiffs' petition
specifies alleged pollution from air emissions from the three plants as a basis
for their claims. The trial court allowed the intervention and severed the
action from the original lawsuit against Dynagen. Plaintiffs have withdrawn
their motion to have the litigation certified as a class claim. In November
1994, the plaintiffs filed an amended petition which substituted the Odessa
branch of the NAACP as plaintiff in place of the national and state chapters of
the NAACP. The amended complaint also added approximately 100 additional
plaintiffs. Defendants are challenging the NAACP's standing to participate in
the lawsuit. In May 1996, the trial court announced that the lawsuit would be
tried by groups of plaintiffs and set the first group of 65 plaintiffs for trial
in May 1997. The trial court allowed plaintiffs' counsel to designate ten
plaintiffs for the first trial, and the trial court selected the remaining 55 at
random. Discovery was ongoing when in late January 1997 the parties and the
trial court agreed to a 30-day moratorium to determine if the case could be
settled and the May 1997 trial date was vacated. At mediation, the Company
agreed to a settlement, which was approved by the trial court on March 17, 1997.
Although the terms of the settlement are confidential, the Company believes that
the settlement will not have a material adverse effect on the Company's
financial position, results of operations or cash flows. Because of the number
of plaintiffs involved, the Company anticipates that the settlement will not be
finalized until the second quarter of 1997. Should the settlement not be
concluded, the case will be reset for trial later in 1997. Also, late in 1996,
plaintiffs' counsel filed a new lawsuit in the State District Court in Harris
County (Houston), Texas for seven similarly situated plaintiffs. The terms of
the anticipated settlement should also cover this lawsuit.
 
     Although there can be no assurance of the final resolution of any of these
matters, the Company believes that, based upon its current knowledge of the
facts of each case, it has meritorious defenses to the various claims made and
intends to defend each suit vigorously, and the Company does not believe that
the outcome of any of these lawsuits will have a material adverse effect on the
Company's financial position, results of operations or cash flows.
 
     With respect to certain pending or threatened proceedings involving the
discharge of materials into or protection of the environment, see "Item
1 -- Business -- Environmental and Related Regulation". The
 
                                       13
<PAGE>   116
 
Company is also a party to various lawsuits arising in the ordinary course of
business and does not believe that the outcome of any of these lawsuits will
have a material adverse effect on the Company's financial position, results of
operations or cash flows.
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
     No matter was submitted to a vote of the Company's security holders during
the fourth quarter of 1996.
 
                                    PART II
 
ITEM 5.MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS
 
     The Registrant's common stock trades on the New York Stock Exchange under
the symbol "RXN". As of March 14, 1997, there were 620 record holders of common
stock. The following table sets forth the high and low sales prices of the
common stock as reported by the New York Stock Exchange for the last two fiscal
years.
 
<TABLE>
<CAPTION>
                                                              HIGH      LOW
                                                              ----      ---
<S>                                                           <C>       <C>
1996:
  Fourth Quarter............................................  14 1/2   11 3/4
  Third Quarter.............................................  13 7/8    9 
  Second Quarter............................................  13 7/8    9 7/8
  First Quarter.............................................  14 1/4    9 1/8
1995:                                                                     
  Fourth Quarter............................................  12 1/4    8 7/8
  Third Quarter.............................................  15 5/8   11 1/4
  Second Quarter............................................  14 1/4   10 1/4
  First Quarter.............................................  13 3/8    9 
</TABLE>
 
     The Company did not declare or pay cash dividends during the first three
quarters of 1995. Commencing in December 1995, the Board of Directors has
declared a $0.04 per share dividend for each fiscal quarter. Although the
Company has not established a formal policy with respect to the declaration of
dividends, the Company will evaluate the advisability of declaring future
dividends on a quarterly basis based on a number of factors, including the
Company's financial condition and results of operations. See "Item
7 -- Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Liquidity and Capital Resources".
 
                                       14
<PAGE>   117
 
ITEM 6. SELECTED FINANCIAL DATA
 
     The following table sets forth selected financial data for the Company for
the periods indicated. Information should be read in conjunction with the
Company's Consolidated Financial Statements and Notes thereto included on the
pages immediately following the Index to Consolidated Financial Statements
appearing on page F-1. See "Item 7 Management's Discussion and Analysis of
Financial Condition and Results of Operations". In connection with a
reorganization under Chapter 11 of the United States Bankruptcy Code, the
Company adopted as of September 30, 1992, the American Institute of Certified
Public Accountants' Statement of Position No. 90-7, "Financial Reporting by
Entities in Reorganization Under the Bankruptcy Code" (the "Reorganization
SOP"). The Company's basis of accounting for financial reporting purposes
changed as a result of adopting the Reorganization SOP. Accordingly, the results
of operations after September 30, 1992 are not comparable to results of
operations prior to such date, and the results of operations for the nine months
ended September 30, 1992 and the three months ended December 31, 1992 have not
been aggregated.
 
<TABLE>
<CAPTION>
                                                             POST-EMERGENCE                         PRE-EMERGENCE
                                        ---------------------------------------------------------   -------------
                                                                                    THREE MONTHS     NINE MONTHS
                                                YEARS ENDED DECEMBER 31,                ENDED           ENDED
                                        -----------------------------------------   DECEMBER 31,    SEPTEMBER 30,
                                          1996       1995       1994       1993         1992            1992
                                        --------   --------   --------   --------   -------------   -------------
                                                          (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                     <C>        <C>        <C>        <C>        <C>             <C>
Consolidated Statements of Operations
  Data:
  Net sales...........................  $587,761   $615,238   $537,957   $429,353     $ 98,854        $316,106
  Operating income....................    63,436    125,146     75,085     14,504        1,418           9,392
  Income (loss) before extraordinary
    gain (loss).......................    29,731     65,443     21,504    (25,243)      (6,528)        (31,476)
  Extraordinary gain (loss), net of
    income taxes......................        --         --    (25,831)        --           --         123,672
                                        --------   --------   --------   --------     --------        --------
  Net income (loss)...................  $ 29,731   $ 65,443   $ (4,327)  $(25,243)    $ (6,528)       $ 92,196
                                        ========   ========   ========   ========     ========        ========
  Weighted average shares
    outstanding.......................    19,168     19,126     11,663     10,501       10,501
                                        ========   ========   ========   ========     ========
Income (loss) per share(1):
  Income (loss) before extraordinary
    loss..............................  $   1.55   $   3.42   $   1.84   $  (2.40)    $   (.62)
  Extraordinary loss..................        --         --      (2.21)        --           --
                                        --------   --------   --------   --------     --------
  Net income (loss) per share.........  $   1.55   $   3.42   $   (.37)  $  (2.40)    $   (.62)
                                        ========   ========   ========   ========     ========
Dividends per share...................  $    .16   $    .04   $     --   $     --     $     --
                                        ========   ========   ========   ========     ========
</TABLE>
 
<TABLE>
<CAPTION>
                                                            AT DECEMBER 31,
                                          ----------------------------------------------------
                                            1996       1995       1994       1993       1992
                                          --------   --------   --------   --------   --------
<S>                                       <C>        <C>        <C>        <C>        <C>
Consolidated Balance Sheets Data:
  Working capital.......................  $ 92,089   $108,416   $140,039   $109,381   $104,824
  Total assets..........................   597,542    520,591    506,954    434,307    423,591
  Long-term debt and other noncurrent
      liabilities.......................   350,383    296,080    366,766    397,091    367,327
  Stockholders' equity (deficit)........   169,051    140,151     74,876     (5,137)    20,106
</TABLE>
 
- ---------------
 
(1) Per share data for the pre-emergence periods is not presented because such
    information is not comparable to the similar information for the
    post-emergence periods.
 
                                       15
<PAGE>   118
 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS
 
OVERVIEW
 
     The Company conducts its business through two operating divisions: the
Rexene Products division, which manufactures and sells polyethylene,
polypropylene, REXtac(R) APAO, REXflex(R) FPO and styrene, and the CT Film
division, which manufactures and sells plastic film. The polyethylene,
polypropylene and styrene markets in which the Company competes are cyclical
markets that are sensitive to relative changes in supply and demand as well as
general economic conditions. Historically, these products have experienced
alternating periods of tight supply, rising prices and increased profits
followed by periods of large capacity additions resulting in oversupply, lower
selling prices and lower gross profits. The Company's plastic film and REXtac
APAO businesses are generally less sensitive to economic cycles.
 
     Principal raw materials purchased by the Company consist of ethane and
propane extracted from NGL, propylene and benzene (all four of which are
referred to as "feedstocks") for the polymer and styrene businesses and
polyethylene resins for the film business. The feedstock supplies available in
Odessa, Texas are currently adequate for the Company's requirements. In 1996,
feedstocks accounted for approximately 30% of the Company's total cost of sales.
As a result, the Company's inability in 1996 to pass on the full amount of the
increases in feedstock costs to customers had a significant impact on operating
results. Low industry inventory levels of crude oil, natural gas and NGL
feedstocks and unexpected supply disruptions caused feedstock prices to increase
during the first nine months of 1996. Feedstock prices for ethane and propane
increased significantly during the fourth quarter principally due to low
inventory levels and an increase in home heating demand caused by an unusually
cold winter pattern. Feedstock prices decreased midway in the first quarter of
1997.
 
RESULTS OF OPERATIONS
 
     1996 COMPARED TO 1995
 
     As discussed above, a slowdown in economic growth in the United States, a
decrease in average sales prices for styrene and polyethylene and higher
feedstock prices in the fourth quarter of 1996 resulted in overall lower sales
and profitability in 1996 than 1995. Net sales decreased $27.5 million (or 4.5%)
from 1995 to 1996 principally due to a decrease in average sales prices in
styrene and polyethylene, offset by increased excess feedstock sales. Styrene
sales decreased $30.4 million (or 25%) principally due to a decrease in average
sales prices of 10 cents per pound, partially offset by an increase in sales
volumes of 9.9 million pounds. Polyethylene sales decreased $5.0 million (or 3%)
due to a decrease in average sales prices of 4 cents per pound, partially offset
by an increase in sales volumes of 21.5 million pounds. Polypropylene sales
decreased $3.3 million (or 4%) principally due to a decrease in average sales
prices of 2 cents per pound. Sales of plastic film decreased $18.1 million (or
11%) principally due to a decrease in average sales prices of 4 cents per pound
and a decrease in sales volumes of 10.3 million pounds as a result of a general
trend by disposable diaper manufacturers towards thinner diaper backsheet
materials. REXtac APAO sales increased $2.4 million (or 10%) due to higher sales
volumes of 4.8 million pounds. Other sales increased $26.9 million principally
due to an increase of excess feedstock sales.
 
     The Company's gross profit percentage decreased from 29% in 1995 to 20% in
1996, principally due to the decrease in average sales prices for styrene and
polyethylene discussed above and an increase in feedstock costs. Feedstock price
increases accounted for $16 million, or one-third of the 9% reduction in the
gross profit percentage in 1996 compared to 1995.
 
     Marketing, general and administrative expenses increased $0.5 million from
1995 to 1996, primarily due to higher marketing costs in the plastic film
market. Research and development expenses decreased $0.8 million as costs
associated with the new FPO plant decreased as a result of the plant startup in
December 1996.
 
                                       16
<PAGE>   119
 
     As a result of the factors discussed above, operating income decreased
$61.7 million (or 49%) from 1995 to 1996. Of this $61.7 million decrease in
operating income, $35.8 million was due to the cyclical downturn in the styrene
business.
 
     Interest expense decreased $8.7 million (or 36%) principally due to a lower
credit line balance and higher capitalized interest on capital improvements.
 
     Other, net increased $1.6 million from 1995 to 1996 principally due to
costs of $1.2 million related to the Company's response to an unsolicited offer
to purchase the Company.
 
     Income tax expense decreased $20.3 million from 1995 to 1996 due to
decreased operating results.
 
     Due primarily to reasons discussed above, net income decreased $35.7
million from 1995 to 1996.
 
     1995 COMPARED TO 1994
 
     The Company's overall sales and profitability were higher in 1995 than
1994. As discussed above, the petrochemical and polymer markets in which the
Company participates were stronger in the first half of 1995 as compared to the
second half of 1995. Net sales increased $77.3 million (or 14%) from 1994 to
1995 principally due to an increase in average sales prices of styrene,
polyethylene and polypropylene, offset by a decrease in sales volumes for
plastic film. Styrene sales increased $30.3 million (or 34%) principally due to
an increase in average sales prices of 9 cents per pound. Polyethylene sales
increased $22.5 million (or 15%) principally due to an increase in average sales
prices of 9 cents per pound, partially offset by a decrease in sales volumes of
21.7 million pounds. Polypropylene sales increased $13.0 million (or 17%)
principally due to an increase in average sales prices of 7 cents per pound.
Plastic film sales decreased $2.1 million (or 1%) principally due to a decrease
in sales volumes of 20.3 million pounds principally from the lost sales volumes
of the film sold to the disposable diaper market for reasons discussed in Item
1 -- Business -- Plastic Film, partially offset by an increase in average sales
prices of 10 cents per pound. REXtac APAO sales increased $5.6 million (or 30%)
principally due to an increase in sales volumes of 12.1 million pounds. Other
sales increased $7.9 million in 1995 as compared to 1994 principally due to an
increase in excess feedstock sales.
 
     The Company's gross profit percentage increased from 22% in 1994 to 29% in
1995 principally due to the increase in average sales prices of polyethylene,
polypropylene and styrene.
 
     Marketing, general and administrative expenses increased $5.2 million (or
14%) from 1994 to 1995 principally due to higher information system costs to
support improvements to on-going operations, sales and marketing costs related
to the CT Film plant in England and higher employee compensation and benefits.
Research and development expenses increased $2.4 million (or 34%) principally
due to new product development at CT Film.
 
     Due primarily to the factors discussed above, operating income increased
$50.1 million (or 67%) from 1994 to 1995.
 
     Interest expense decreased $25.6 million (or 51%) principally due to lower
long-term debt as a result of the completion of a recapitalization plan in the
fourth quarter of 1994 and the repayment of bank debt in the first half of 1995.
 
     Other, net decreased $7.7 million from 1994 to 1995 principally due to the
reversal in 1994 of a $7.4 million lawsuit accrual for which the Company
ultimately prevailed on appeal and due to the receipt in 1994 of approximately
$1.0 million of insurance proceeds received in settlement of a claim related to
a prior lawsuit.
 
     Income tax expense increased $24.9 million from 1994 to 1995 principally
due to increased operating results.
 
     In 1994, the Company recorded an extraordinary loss of $25.8 million, net
of income taxes of $15.8 million, as a result of the redemption of the Company's
increasing rate first priority and second priority notes. Due primarily to the
factors discussed above, the Company had net income of $65.4 million in 1995
compared with a net loss of $4.3 million in 1994.
 
                                       17
<PAGE>   120
 
LIQUIDITY AND CAPITAL RESOURCES
 
     During the year ended December 31, 1996, net cash provided by operating
activities decreased $114.3 million as compared to 1995. This decrease was
principally due to lower gross profits and changes in working capital, primarily
income taxes payable and inventories. The Company paid $46.6 million in federal
and state taxes in 1996, which included the tax liability for 1995 and 1996. No
federal income taxes were paid in 1995.
 
     In the fourth quarter of 1994, the Company completed a recapitalization
plan (the "Recapitalization") designed to increase stockholders' equity, reduce
indebtedness and interest expense and improve the Company's strategic, operating
and financial flexibility. The Recapitalization resulted in (i) the issuance of
8 million shares of common stock at $11.00 per share, (ii) the issuance of
11 3/4% Senior Notes due 2004 (the "Senior Notes") in an aggregate principal
amount of $175 million, (iii) the establishment of a new credit facility,
providing a $100 million term loan (the "Term Loan") and an $80 million
revolving line of credit (the "Revolving Credit Facility"), (iv) the redemption
and defeasance of the Company's increasing rate first priority and second
priority notes, and (v) the repayment in full of the outstanding indebtedness
under the then existing credit agreement. In addition to cash generated from
operations, in 1995, the Company received a $25 million advance payment from a
customer as a result of a multi-year agreement to supply a portion of annual
styrene production. Using cash generated from operations, this advance payment
and existing cash balances, the Company repaid $100 million of long-term debt
under the Term Loan in the first half of 1995. On April 24, 1996, the Company
executed an amendment to its existing credit facility ( the "Amended Credit
Agreement") to provide a line of credit in the amount of $150 million for a
seven year term. On August 5, 1996, the Company executed an agreement with a
financial institution for a $10 million uncommitted, unsecured line of credit (
the "Unsecured Note") for day to day cash flow requirements. As of December 31,
1996, the Company's outstanding indebtedness under the Amended Credit Agreement
was $60 million and no amounts were outstanding under the Unsecured Note.
 
     On March 14, 1997, the Amended Credit Agreement was further amended to,
among other things, permit the repurchase of shares of Common Stock pursuant to
the Share Repurchase Program. On March 14, 1997, the Company received a
commitment from Scotia Bank to increase the borrowing availability under the
Amended Credit Agreement from $150 million to $225 million through $150 million
in term loans and $75 million in a revolving credit facility (the "New Credit
Agreement"). The primary use of proceeds from the New Credit Agreement will be
to provide funds to repurchase approximately $35 million of the Company's Common
Stock pursuant to the Share Repurchase Program and to finance portions of the
Company's capital expenditure program at its Odessa, Texas plant over the next
two years, including the modernization and expansion of its olefins plant and
the construction of a new LLDPE plant.
 
     The New Credit Agreement will contain covenants which limit, among other
things, the incurrence of additional indebtedness by the Company, the creation
of liens on the Company's assets, the making of certain investments by the
Company, certain mergers, sales of certain fixed assets and the prepayment of
the Senior Notes. The New Credit Agreement also will contain certain financial
covenants relating to the financial condition of the Company, including
covenants relating to minimum net worth, the ratio of its earnings to its
interest expense and the ratio of its earnings to debt. As of March 14, 1997,
the Company had borrowed $93 million under the Amended Credit Agreement.
 
     The Company anticipates that the second part of the Share Repurchase
Program will be funded by the issuance of $50 million in Preferred Stock. At the
Special Meeting, stockholders will be asked to approve the second part of the
Share Repurchase Program. See "Item 1 -- Business -- Recent Developments."
 
     The Company believes that, based on current levels of operations and
anticipated growth, its cash flow from operations, together with other available
sources of liquidity, including the proceeds from the New Credit Agreement, will
be adequate to make scheduled payments of interest on the Senior Notes and
dividends on the Preferred Stock, to permit anticipated capital expenditures and
to fund working capital requirements. However, the ability of the Company to
satisfy these obligations depends on a number of significant assumptions,
including but not limited to, the demand for the Company's products, raw
material costs and other factors.
 
                                       18
<PAGE>   121
 
     The indenture governing the Senior Notes (the "Indenture") contains certain
covenants that, among other things, limit the ability of the Company to incur
additional indebtedness and to repurchase subordinated indebtedness, incur or
suffer to exist certain liens, pay dividends, make certain investments, sell
significant fixed assets and engage in mergers and consolidations.
 
     Pursuant to Section 10.01(k) of the Amended Credit Agreement, the
replacement of a majority of the Company's directors, if adopted by the
stockholders of the Company at the Special Meeting, would cause a "change of
control" as defined in the Amended Credit Agreement. Pursuant to the Amended
Credit Agreement, the lenders could cancel their obligations to make loans to
the Company and/or declare the loans then outstanding under the Amended Credit
Agreement due and payable. The replacement of a majority of the Company's
directors, if successful, also would be a "change of control" under the
Indenture, pursuant to which the Senior Notes were issued. Each holder of Senior
Notes would then have the right to require the Company to purchase all or any
part of such holder's Senior Notes at a price in cash equal to 101% of the
aggregate principal amount thereof plus accrued and unpaid interest thereon to
the date of purchase.
 
     During 1996 and 1995, the Company expended $113.8 million and $54.6
million, respectively, for capital expenditures. In 1997, the Company expects to
spend approximately the same amount for capital expenditures as in 1996,
including $33 million towards the completion of the olefin plant modernization
and expansion and approximately $29 million towards construction of the LLDPE
expansion at the Odessa Facility.
 
     A number of potential environmental liabilities exist which relate to
certain contaminated property. In addition, a number of potential environmental
costs relate to pending or proposed environmental regulations. No assurance can
be given that all of the potential liabilities arising out of the Company's
present or past operations have been identified or that the amounts that might
be required to investigate and remediate such sites or comply with pending or
proposed environmental regulations can be accurately estimated. The Company has
approximately $18.4 million accrued in the December 31, 1996 balance sheet as an
estimate of its total potential environmental liability with respect to
investigating and remediating known and assessed site contamination. Extensive
environmental investigation of the groundwater, soils and solid waste management
has been conducted at the Odessa Facility. Risk assessments have been completed
for a number of these facilities and corrective measures have been defined and
conducted. Approval of certain waste management unit closures required a public
notice period that expired at the end of February 1997. The Company has received
approval to close five solid waste management units, which will permit a
reduction in the accrual for potential environmental liability of approximately
$9.0 million. If, however, additional liabilities with respect to environmental
contamination are identified, there is no assurance that additional amounts that
might be required to investigate and remediate such potential sites would not
have a material adverse effect on the financial position, results of operations
or cash flows of the Company. In addition, future regulatory developments could
restrict or possibly prohibit existing methods of environmental compliance. At
this time, the Company is unable to determine the potential consequences such
possible future regulatory developments would have on its financial condition.
Management continually reviews its estimates of potential environmental
liabilities. The Company does not currently carry environmental impairment
liability insurance to protect it against such contingencies because the Company
has found such coverage is available only at great cost and with broad
exclusions. See "Item 1 -- Business -- Environmental and Related Regulation."
 
     The Company's operating expenditures for environmental remediation,
compliance and waste disposal were approximately $7.6 million and $8.3 million
in 1996 and 1995, respectively. In 1997, the Company anticipates spending
approximately $8.4 million for environmental remediation, compliance and waste
disposal. Of that amount, expenditures relating to remediation are projected to
be approximately $2.3 million in 1997. Compliance and waste disposal costs are
expected to increase slightly over the next several years as a result of
increasingly stringent regulations that affect waste handling alternatives. In
1996 and 1995, the Company also spent approximately $1.4 million and $1.2
million, respectively, relating to environmental capital expenditures. For the
foreseeable future, the Company expects to incur approximately $2 million to $4
million per year in capital spending to address the requirements of
environmental laws. Additionally, the Company expects to spend approximately
$5.9 million in 1997 for the completion of an alternative wastewater disposal
facility. Annual amounts could vary depending on a variety of factors, such as
the control measures or remedial technologies ultimately required and the time
allowed to meet such requirements.
 
                                       19
<PAGE>   122
 
OTHER MATTERS
 
     The Company is including the following cautionary statement in this
combined Annual Report to Shareholders/Form 10-K to make applicable and take
advantage of the safe harbor provisions of the Private Securities Litigation
Reform Act of 1995 for any forward-looking statements made by, or on behalf of,
the Company. Forward-looking statements include statements concerning plans,
objectives, goals, strategies, future events or performance, and underlying
assumptions and other statements which are other than statements of historical
facts. From time to time, the Company may publish or otherwise make available
forward-looking statements of this nature. All such subsequent forward-looking
statements, whether written or oral and whether made by or on behalf of the
Company, are also expressly qualified by these cautionary statements. Certain
statements contained herein are forward-looking statements and accordingly
involve risks and uncertainties which could cause actual results or outcomes to
differ materially from those expressed in the forward-looking statements. The
forward-looking statements contained herein are based on various assumptions,
many of which are based, in turn, upon further assumptions. The Company's
expectations, beliefs and projections are expressed in good faith and are
believed by the Company to have a reasonable basis, including without
limitation, management's examination of historical operating trends, data
contained in the Company's records and other data available from third parties,
but there can be no assurance that management's expectations, beliefs or
projections will result or be achieved or accomplished. In addition to the other
factors and matters discussed elsewhere herein, the following are important
factors that, in the view of the Company, could cause actual results to differ
materially from those discussed in the forward-looking statement:
 
      1. Changes in economic conditions and weather conditions
 
      2. Changes in the availability and/or price of feedstocks
 
      3. Changes in management or control of the Company
 
      4. Inability to obtain new customers or retain existing ones
 
      5. Significant changes in competitive factors affecting the Company
 
      6. Governmental/regulatory actions and initiatives, including those
         affecting financings, and environmental/safety requirements
 
      7. Significant changes from expectations in actual capital expenditures
         and operating expenses and unanticipated project delays
 
      8. Occurrences affecting the Company's ability to obtain funds from
         operations, debt or equity to finance needed capital expenditures and
         other investments
 
      9. Regarding foreign operations -- changes in foreign trade and monetary
         policies, laws and regulations related to foreign operations, political
         and governmental changes, inflation and exchange rates, taxes and
         operating conditions
 
     10. Significant changes in tax rates or policies or in rates of inflation
         or interest
 
     11. Significant changes in the Company's relationship with its employees
         and the potential adverse effects if labor disputes or grievances were
         to occur
 
     12. Changes in accounting principles and/or the application of such
         principles to the Company.
 
     The Company disclaims any obligation to update any forward-looking
statements to reflect events or circumstances after the date hereof.
 
ITEM 8. FINANCIAL STATEMENTS
 
     The Company's Consolidated Financial Statements required by this item are
included on the pages immediately following the Index to Consolidated Financial
Statements appearing on page F-1.
 
                                       20
<PAGE>   123
 
ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL
       DISCLOSURE
 
     None.
 
                                    PART III
 
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
            DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY
 
     The table set forth below provides certain information with respect to
those persons who are currently serving as directors and executive officers of
the Company.
 
<TABLE>
<CAPTION>
        NAME          AGE                             POSITION
        ----          ---                             --------
<S>                   <C>   <C>
 
Andrew J. Smith.....  55    Chairman of the Board, Director and Chief Executive Officer
Lavon N. Anderson...  61    Director, President and Chief Operating Officer
James R. Ball.......  54    Director
Harry B. Bartley....  69    Director
R. James Comeaux....  58    Director
William B. Hewitt...  58    Director
Ilan Kaufthal.......  49    Director
Charles E.            65    Director
  O'Connell.........
Jack E. Knott.......  42    Director, Executive Vice President and President -- Rexene
                            Products
Richard C. Perry....  42    Director
Stephen C. Swid.....  56    Director
Jonathan R.           45    Executive Vice President and President -- CT Film
  Wheeler...........
James M. Ruberto....  50    Executive Vice President -- Administration
Bernard J.            61    Executive Vice President, Secretary and General Counsel
  McNamee...........
Geff Perera.........  43    Executive Vice President and Chief Financial Officer
</TABLE>
 
     Mr. Smith has been Chairman of the Board of Directors since April 1996 and
Chief Executive Officer and a director of the Company since March 1992. From
December 1991 to March 1992, he was a private consultant. From June 1991 to
December 1991, he was President and Chief Operating Officer of Itex Enterprises,
Inc., an environmental remediation company. Mr. Smith also served as a
consultant to Old Rexene from January 1991 to June 1991. Immediately prior
thereto, he had been a director of Old Rexene since May 1988 and the President
and Chief Executive Officer of Old Rexene since June 1988. Mr. Smith joined the
Company in 1976.
 
     Dr. Anderson has been President and Chief Operating Officer of the Company
since January 1991 and a director since February 1990. From May 1988 to January
1991, Dr. Anderson was Executive Vice President -- Manufacturing and Technical
of Old Rexene. Prior thereto Dr. Anderson has served the Company in various
capacities since 1972.
 
     Mr. Ball has served as director of the Company since April 1996. He is a
private investor and is engaged in private consulting. Mr. Ball served Vista
Chemical Company in a number of capacities from 1984 to 1994, including Vice
President, Marketing from July 1984 to August 1987, Senior Vice President,
Commercial from August 1987 to February 1992, Executive Vice President and Chief
Operations Officer, from February 1992 to July 1992, and President and Chief
Executive Officer from July 1992 to December 1994. Prior to July 1984, Mr. Ball
held various positions with Conoco since 1969. Mr. Ball is a director of The
Carbide/Graphite Group.
 
     Mr. Bartley has served as a director of the Company since April 1995. He is
currently retired. Mr. Bartley served Hoechst Celanese Corporation in a number
of capacities from 1950 to 1989, including President of Celanese Chemical Co.
from 1976 to 1987, President of Hoechst Celanese Chemical Group from 1987 to
1989 and director of Hoechst Celanese Corporation from 1987 to 1989.
 
                                       21
<PAGE>   124
 
     Mr. Comeaux has served as a director of the Company since April 1995. He
has served as President of Petrochemical Management, Inc., a consulting firm,
since April 1993. From August 1989 to January 1993, Mr. Comeaux was President,
Chief Executive Officer and Director of Arcadian Corporation, a fertilizer
manufacturer. Prior to such time, Mr. Comeaux was Senior Vice President of FINA,
Inc. from 1984 to 1989 and served Gulf Oil Corporation in a number of capacities
from 1967 to 1984.
 
     Mr. Hewitt has served as a director of the Company since February 1990. He
has been President of Union Corporation, a receivables management and customer
service outsourcing company, since May 1995 and Chairman of the Board and Chief
Executive Officer of Capital Credit Corporation, a receivables management
company, since September 1991. Mr. Hewitt was Executive Vice President of First
Manhattan Consulting Group, a management consulting firm, from 1980 to September
1991. He is also a director of the Union Corporation.
 
     Mr. Kaufthal has served as a director of the Company since September 1992.
He has been a managing director of Schroder Wertheim & Co. Incorporated, an
investment banking firm, since 1987. He is also a director of United Retail
Group, Inc., Cambrex Corporation and Russ Berrie & Company.
 
     Mr. O'Connell has served as a director of the Company since April 1995. He
is currently retired. From 1985 to 1988, Mr. O'Connell served as President of
the Society of Plastics Industries, a trade association. From 1964 to 1984, he
served Gulf Oil Corporation in a variety of capacities.
 
     Mr. Knott has served as a director of the Company since April 1996 and has
been Executive Vice President of the Company and President of Rexene Products
since March 1995. Prior thereto, Mr. Knott had been Executive Vice
President -- Sales and Market Development of the Company since March 1992. Prior
thereto, Mr. Knott was an Executive Vice President of Old Rexene since January
1991 and President of CT Film since February 1989.
 
     Mr. Perry has served as a director of the Company since March 19, 1997. Mr.
Perry is the President of Perry Corp., a New York based private investment
management firm, which he founded in November 1988. From 1977 to 1988, Mr. Perry
implemented investment strategies in the equity trading area of Goldman Sachs &
Co. He is also Chairman of the Board of FTD Corporation and a director of Radio
& Records, Inc.
 
     Mr. Swid has served as a director of the Company since March 19, 1997. Mr.
Swid has served as Chairman and Chief Executive Officer of SCS Communications,
an owner and operator of diverse media properties, since late 1989. From
February, 1990 to January, 1995, Mr. Swid was the Chairman and Chief Executive
Officer of Westview Press. Prior thereto, Mr. Swid had been the Chairman and
Chief Executive Officer of SBK Entertainment World, Inc. from November, 1986 to
May, 1989. For the twelve years prior thereto, Mr. Swid had been the Co-Chairman
and Co-Chief Executive Officer of Knoll International Holdings, Inc.
 
     Mr. Wheeler has been Executive Vice President of the Company and President
of CT Film since January 1996. Prior thereto, Mr. Wheeler was Executive Vice
President -- Administration since April 1995. Prior thereto, Mr. Wheeler had
been Senior Vice President -- Administration of the Company since December 1990.
 
     Mr. Ruberto has been Executive Vice President -- Administration since
January 1996. Prior thereto, Mr. Ruberto had been Executive Vice President of
the Company and President of CT Film since March 1992. Prior thereto, Mr.
Ruberto had been Executive Vice President -- Sales and Market Development of
Rexene since January 1991. From April 1989 to January 1991, Mr. Ruberto was
Executive Vice President -- Marketing and Business Planning of Old Rexene.
 
     Mr. McNamee has been Executive Vice President, Secretary and General
Counsel of the Company since April 1995. Prior thereto, Mr. McNamee had been
Vice President, Secretary and General Counsel of the Company since May 1993.
From September 1989 to November 1992, Mr. McNamee was Vice President and General
Counsel of Ferro Corporation, a multinational manufacturer of specialty
materials.
 
                                       22
<PAGE>   125
 
     Mr. Perera has been Executive Vice President and Chief Financial Officer of
the Company since May 1996. Prior thereto, Mr. Perera had been Vice President of
the Company since January 1991 and Controller since February 1989.
 
     In October 1991, Old Rexene filed a petition for reorganization under the
federal bankruptcy laws from which the Company emerged on September 18, 1992,
pursuant to the Reorganization. At the time Old Rexene filed its petition for
reorganization, Dr. Anderson and Mr. Hewitt served as directors. In addition, in
connection with the Reorganization, Messrs. Kaufthal was appointed to serve on
the Company's board at the request of the committee of creditors participating
in the Reorganization. Mr. Smith, who served as a director of Old Rexene prior
to the filing of its petition for reorganization, returned to Old Rexene's board
after the petition was filed. Dr. Anderson and Messrs. Smith, Knott, Ruberto,
Wheeler and Perera each served as executive officers of Old Rexene at some time
within two years before the filing by Old Rexene of its petition for
reorganization.
 
COMPLIANCE WITH SECTION 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934
 
     Section 16(a) of the Securities Exchange Act of 1934, as amended (the "1934
Act"), requires directors and officers of the Company, and persons who own more
than 10 percent of the Common Stock, to file with the Securities and Exchange
Commission (the "SEC") initial reports of ownership and reports of changes in
ownership of the Common Stock. Directors, officers and more than 10 percent
stockholders are required by SEC regulations to furnish the Company with copies
of all Section 16(a) forms they file. To the Company's knowledge, based solely
on a review of the copies of such reports furnished to the Company and written
representations that no other reports were required, during the year ended
December 31, 1996, all Section 16(a) filing requirements applicable to its
directors, officers and more than 10 percent beneficial owners were met.
 
ITEM 11. EXECUTIVE COMPENSATION
 
SUMMARY COMPENSATION TABLE
 
     The following table sets forth certain summary information concerning the
compensation paid or awarded to the Chief Executive Officer of the Company and
the four other highest paid executive officers of the Company in 1996 (the
"named executive officers") for the years indicated.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                             ANNUAL COMPENSATION
                                                       --------------------------------
                                                                              OPTIONS
                                                                              (NUMBER      ALL OTHER
         NAME AND PRINCIPAL POSITION            YEAR    SALARY     BONUS     OF SHARES)   COMPENSATION
         ---------------------------            ----   --------   --------   ----------   ------------
<S>                                             <C>    <C>        <C>        <C>          <C>
Andrew J. Smith,..............................  1996   $452,088   $357,186     80,000       $ 6,300(1)
       Chairman of the Board and                1995    431,671    469,808         --         7,176
       Chief Executive Officer                  1994    367,502    380,000     70,000         4,902
Lavon N. Anderson,............................  1996   $297,000   $ 70,000         --       $ 8,568(2)
       President and                            1995    297,000    248,054         --        10,888
       Chief Operating Officer                  1994    292,000    297,000     40,000         6,273
Jack E. Knott,................................  1996   $241,267   $160,162     40,000       $ 3,106(3)
       Executive Vice President and             1995    221,675    203,338         --         3,542
       President of Rexene Products             1994    217,921    176,000     38,000         3,209
Jonathan R. Wheeler,..........................  1996   $225,845   $138,914     40,000       $ 3,573(4)
       Executive Vice President and             1995    206,675    190,630         --         3,548
       President of CT Film                     1994    200,838    164,000     32,000         2,703
James M. Ruberto,.............................  1996   $220,008   $ 87,727     20,000       $ 4,427(5)
       Executive Vice
          President -- Administration           1995    220,008    165,270         --         3,579
                                                1994    217,921    176,000     38,000         3,762
</TABLE>
 
                                       23
<PAGE>   126
 
- ---------------
 
(1) Consists of Company contributions to employee benefit plans (and related
    cash supplements) of $2,250, $4,584 and $2,310 in 1996, 1995 and 1994,
    respectively, and imputed income for life insurance of $4,050, $2,592 and
    $2,592 for 1996, 1995 and 1994, respectively.
 
(2) Consists of Company contributions to employee benefit plans (and related
    cash supplements) of $2,250, $4,570 and $2,223 in 1996, 1995 and 1994,
    respectively, and imputed income for life insurance of $6,318, $6,318 and
    $4,050 in 1996, 1995 and 1994, respectively.
 
(3) Consists of Company contributions to employee benefit plans (and related
    cash supplements) of $2,225, $2,744 and $2,426 in 1996, 1995 and 1994,
    respectively, and imputed income for life insurance of $881, $798 and $783
    in 1996, 1995 and 1994, respectively.
 
(4) Consists of Company contributions to employee benefit plans (and related
    cash supplements) of $2,175, $2,812 and $1,988 in 1996, 1995 and 1994,
    respectively, and imputed income for life insurance of $1,398, $736 and $715
    in 1996, 1995 and 1994, respectively.
 
(5) Consists of Company contributions to employee benefit plans (and related
    cash supplements) of $2,175, $2,218 and $2,426 in 1996, 1995 and 1994,
    respectively, and imputed income for life insurance of $2,252, $1,361 and
    $1,336 in 1996, 1995 and 1994, respectively.
 
OPTION GRANTS, EXERCISES AND HOLDINGS
 
     The following table sets forth certain information with respect to options
to purchase Common Stock granted during the year ended December 31, 1996 to
certain of the named executive officers.
 
                             OPTION GRANTS IN 1996
 
<TABLE>
<CAPTION>
                                                                                             POTENTIAL REALIZABLE
                                                                                               VALUE AT ASSUMED
                                                                                               ANNUAL RATES OF
                                                                                                 STOCK PRICE
                                                                                                 APPRECIATION
                                                    INDIVIDUAL GRANTS                          FOR OPTION TERM
                                ----------------------------------------------------------   --------------------
                                NUMBER OF SECURITIES   % OF TOTAL
                                 UNDERLYING OPTIONS     OPTIONS     EXERCISE
                                      GRANTED          GRANTED TO    OR BASE
                                 (NUMBER OF SHARES)    EMPLOYEES      PRICE     EXPIRATION
             NAME                       (1)             IN 1996     ($/SH)(2)      DATE      5%($)(3)   10%($)(4)
             ----               --------------------   ----------   ---------   ----------   --------   ---------
<S>                             <C>                    <C>          <C>         <C>          <C>        <C>
Andrew J. Smith...............         80,000            16.34%      $10.79      8/01/06     544,000    1,372,800
Jack E. Knott.................         40,000             8.17%      $10.79      8/01/06     272,000      686,400
Jonathan R. Wheeler...........         40,000             8.17%      $10.79      8/01/06     272,000      686,400
James M. Ruberto..............         20,000             4.08%      $10.79      8/01/06     136,000      343,200
</TABLE>
 
- ---------------
 
(1) Options represent the right to purchase shares of Common Stock at a fixed
    price per share. Fifty percent (50%) of the options become exercisable when
    the market value of the Common Stock first reaches $16.185 per share, and
    the balance of such options become exercisable when the market value of the
    Common Stock first reaches $21.58 per share. In any event, all of the
    options become exercisable on August 1, 2004 or upon the death, disability
    or retirement of an optionee or upon a change of control.
 
(2) Based on the average trading price on the New York Stock Exchange of the
    Common Stock for the preceding twenty trading days.
 
(3) Represents an assumed market price per share of Common Stock of $17.59.
 
(4) Represents an assumed market price per share of Common Stock of $27.95.
 
                                       24
<PAGE>   127
 
     No named executive officer exercised options to purchase Common Stock in
1996. The following table sets forth certain information with respect to the
unexercised options to purchase Common Stock held at December 31, 1996 by each
of the Company's named executive officers.
 
<TABLE>
<CAPTION>
                                              NUMBER OF UNEXERCISED     VALUE OF UNEXERCISED
                                               OPTIONS AT 12/31/96     IN-THE-MONEY OPTIONS AT
                                                    (SHARES)                  12/31/96
                                              ---------------------    -----------------------
                                                  EXERCISABLE/              EXERCISABLE/
                    NAME                          UNEXERCISABLE             UNEXERCISABLE
                    ----                      ---------------------    -----------------------
<S>                                           <C>                      <C>
Andrew J. Smith.............................     68,666/103,334            389,533/309,342
Lavon N. Anderson...........................     45,916/ 13,334            313,668/ 66,103
Jack E. Knott...............................     37,333/ 52,667            241,320/172,890
Jonathan R. Wheeler.........................     33,333/ 50,667            214,877/159,673
James M. Ruberto............................     37,333/ 32,667            241,320/116,190
</TABLE>
 
RETIREMENT PLANS
 
     The Company has a trusteed non-contributory defined benefit pension plan
(the "Retirement Plan") for substantially all non-union employees. The normal
retirement age of participants is 65. An employee is entitled, subject to
various Internal Revenue Code limitations, to annual pension benefits equal to
0.9% of the employee's average annual base salary during the highest paid three
consecutive years of the employee's final ten calendar years of service ("Final
Average Pay") multiplied by years of service under the Retirement Plan, plus
0.5% of the employee's Final Average Pay which exceeds an average, computed
under Internal Revenue Service rules, of the employee's wages taken into account
for social security purposes, multiplied by the number of years of the
employee's participation in the Retirement Plan (up to a maximum of 35 years).
 
     In October 1994, the Company adopted the Rexene Corporation Supplemental
Executive Retirement Plan (the "SERP"), which was amended in 1996. The purposes
of the SERP are to provide supplemental retirement and survivor benefits, in
addition to amounts payable under the Retirement Plan, for a certain select
group of management or highly compensated employees who complete a specified
period of service and otherwise become eligible under the SERP. The Company
intends to fund the SERP from time to time at the discretion of the Management
Development and Compensation Committee or the Board of Directors; the general
assets of the Company are the source of funds for the SERP. Participants in the
SERP are entitled on or after age 60 and completion of 15 years of service from
and after the later to occur of January 1, 1988 and their employment
commencement date to receive monthly pension benefits which, when aggregated
with benefits payable under the Retirement Plan, equal 65% of the monthly
average of Final Average Pay multiplied by the participant's percentage of
vesting and credited service under the SERP. Generally, participants vest 20%
for each of the first five years of service, commencing October 1, 1994. Such
pension benefits will be paid to the extent allowable under the Internal Revenue
Code from the Retirement Plan and thereafter from the SERP. Pension payments to
be received by Dr. Anderson under the SERP will be further reduced by any
monthly pension benefits received under a predecessor company retirement plan,
but he will be totally vested and given full service credit if he elects early
retirement after August 1997. In addition, benefits payable to participants in
the SERP who have less than 15 years of service will be reduced at the rate of
6 2/3% per year. If a participant elects to retire prior to age 60, he is
eligible to receive benefits upon reaching age 55 and in such event his benefits
under the SERP may be reduced in an amount not to exceed 10% for each year of
early retirement. Under the SERP, pension payments will be permitted in excess
of the limit imposed by the Internal Revenue Code under the Retirement Plan,
which in 1996 provides that the highest annual salary on which benefits can be
calculated is $150,000. Messrs. Smith, Anderson, Knott, Wheeler and Ruberto and
two other executive officers are the only current participants in the SERP.
 
                                       25
<PAGE>   128
 
     The following table illustrates the amount of combined annual pension
benefits payable under the Retirement Plan and the SERP to participants in
specified average annual earnings and years of service classifications. Benefit
payments under the Retirement Plan are not subject to any reduction for social
security benefits or other offset amounts. Although the amounts set forth below
include benefits payable under the SERP assuming participant vesting of 100%,
all of the current participants in the SERP except one are currently vested only
to the extent of 40% of his accrued benefits in such plan.
 
<TABLE>
<CAPTION>
                                        ANNUAL BENEFITS FOR YEARS OF SERVICE
                              --------------------------------------------------------
     FINAL AVERAGE PAY           5           10          15          20          25
     -----------------        --------    --------    --------    --------    --------
<S>                           <C>         <C>         <C>         <C>         <C>
100,000.....................  $ 21,665    $ 43,336    $ 65,000    $ 65,000    $ 65,000
150,000.....................    32,497      65,003      97,500      97,500      97,500
200,000.....................    43,329      86,671     130,000     130,000     130,000
300,000.....................    64,994     130,007     195,000     195,000     195,000
400,000.....................    86,658     173,342     260,000     260,000     260,000
500,000.....................   108,323     216,678     325,000     325,000     325,000
</TABLE>
 
     For purposes of calculation of benefits under the Retirement Plan, only
years of service since 1984 count in the benefits formula. As of December 31,
1996, the named executive officers had the following credited years of service
under the Retirement Plan: Mr. Smith -- thirteen years; Dr. Anderson -- thirteen
years; Mr. Knott -- eleven years; Mr. Wheeler -- eight years and Mr.
Ruberto -- seven years. For purposes of calculation of benefits under the SERP,
the years of credited service for each of the named executive officers as of
December 31, 1996 were as follows: Mr. Smith -- nine years; Dr. Anderson -- nine
years; Mr. Knott -- nine years; Mr. Wheeler -- eight years and Mr.
Ruberto -- seven years.
 
EXECUTIVE SECURITY PLAN
 
     The beneficiaries of two executive officers of the Company, Dr. Anderson
and Mr. Knott, are entitled to receive under the Executive Security Plan of the
Company (the "Security Plan") death benefits equal to a lump sum of $300,000 in
the event of the death of Dr. Anderson or Mr. Knott while employed by the
Company. The Company purchases life insurance covering such benefits. At the
present time, it is not expected that any additional executive officers will be
selected for participation in the Security Plan.
 
COMPENSATION OF DIRECTORS
 
     Fees and Expenses. In 1996, each director who is not an employee of the
Company received a fee of $1,000 for each meeting of the Board attended, $1,000
for each committee meeting attended which was not held on the same day as a
Board meeting and an annual fee of $10,000 payable in quarterly installments. In
addition, on April 30, 1996, each director who is not an employee of the Company
received options to purchase an aggregate of 2,000 shares of Common Stock under
the Company's 1995 Stock Option Plan for Outside Directors. Such 1996 options
are exercisable at $3.22 per share, equal to the average of the fair market
value per share of Common Stock for the last 20 trading days immediately
preceding April 30, 1996, less $10.00. The Company also reimburses directors for
travel, lodging and related expenses they may incur in attending Board and
committee meetings.
 
EMPLOYMENT AGREEMENTS
 
     Andrew J. Smith, Chief Executive Officer and a director of the Company,
Lavon N. Anderson, President and Chief Operating Officer and a director of the
Company, Geff F. Perera, Executive Vice President and Chief Financial Officer of
the Company, Jack E. Knott, Executive Vice President of Rexene and President of
Rexene Products and a director of the Company, James M. Ruberto, Executive Vice
President of Rexene -- Administration, Jonathan R. Wheeler, Executive Vice
President and President of CT Film, and Bernard J. McNamee, Executive Vice
President, Secretary and General Counsel of the Company, are each parties to
termination agreements entered into in 1996. Each termination agreement provides
that in the event the employee is terminated without cause (as defined in the
agreement) within three years after a change in control of Rexene, is assigned
to a position of lesser responsibility or in the event such employee voluntarily
 
                                       26
<PAGE>   129
 
resigns his employment in certain limited circumstances after such a change in
control, Rexene is obligated to pay the employee within 10 business days after
the effective date of such termination, a lump sum cash severance equal to three
times his then current annual base salary less $1.00. Additionally, in the event
such employee voluntarily resigns because he is required to relocate within the
continental United States within three years after a change in control under the
Company's standard relocation policy, such employee is entitled to receive a
lump sum cash severance amount equal to 18 months of his then current monthly
base salary. The agreements also provide that in the event the employee is
terminated without cause by Rexene without a change in control, Rexene is
obligated to pay the employee within 10 business days of such termination a lump
sum cash severance amount equal to one year of such employee's then current base
salary. "Change in control" is defined in the relevant agreements to generally
include: (i) a change in at least two-thirds of the members of the Board of
Directors, whether as the result of a merger, reorganization or otherwise; (ii)
the acquisition by a related group of persons of beneficial ownership of at
least 20% of the Common Stock; (iii) the liquidation or dissolution of the
Company; or (iv) a determination by a majority of the directors of the Company
that such a change of control has occurred or is imminent.
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
 
     The following tabulation sets forth as of March 14, 1997, information with
respect to each person who was known by Rexene to be the beneficial owner of
more than five percent of the Common Stock.
 
<TABLE>
<CAPTION>
                                                                   COMMON STOCK
                                                                BENEFICIALLY OWNED
                                                              ----------------------
                                                              NUMBER OF     PERCENT
            NAME AND ADDRESS OF BENEFICIAL OWNER                SHARES      OF CLASS
            ------------------------------------              ----------    --------
<S>                                                           <C>           <C>
Guy P. Wyser-Pratte and Spear, Leeds & Kellogg..............   2,483,800(1)  13.2%
  c/o Guy P. Wyser-Pratte
  63 Wall Street
  New York, New York 10005
Dave C. Swalm...............................................   1,850,000(2)   9.8%
  11102 Hedwig Lane
  Houston, Texas 77024
</TABLE>
 
- ---------------
 
(1) Based upon information reported in Amendment No. 2 to Schedule 13D dated
    March 14, 1997 filed by Mr. Guy Wyser-Pratte and Spear, Leads & Kellogg. Mr.
    Wyser-Pratte has sole voting and investment power with respect to 1,369,700
    shares of Common Stock beneficially owned by him and Spear, Leeds & Kellogg
    has sole voting and investment power with respect to 1,114,100 shares of
    Common Stock beneficially owned by it. Although Mr. Wyser-Pratte and Spear,
    Leeds & Kellogg may be deemed a "group" within the meaning of Rule 13d-5
    under the 1934 Act, each of Mr. Wyser-Pratte and Spear, Leeds & Kellogg
    disclaims beneficial ownership of the shares of Common Stock owned by the
    other.
 
(2) Based upon information reported in Amendment No. 2 to Schedule 13D dated
    February 28, 1997 filed by Dave C. Swalm with the SEC. Mr. Swalm has sole
    voting and investment power with respect to 350,000 shares of Common Stock
    he beneficially owns. Mr. Swalm has shared voting and investment power with
    respect to 1,500,000 shares he beneficially owns.
 
                                       27
<PAGE>   130
 
SECURITY OWNERSHIP OF MANAGEMENT
 
     The following tabulation sets forth information with respect to the
beneficial ownership of the Common Stock as of March 14, 1997 by each director
and executive officer of the Company, and all executive officers and current
directors of the Company as a group.
 
<TABLE>
<CAPTION>
                                                                    COMMON STOCK
                                                                 BENEFICIALLY OWNED
                                                              ------------------------
                                                               NUMBER OF      PERCENT
                            NAME                              SHARES(1)(2)    OF CLASS
                            ----                              ------------    --------
<S>                                                           <C>             <C>
Directors
Lavon N. Anderson...........................................      54,383(3)     *
James R. Ball...............................................       2,000        *
Harry B. Bartley, Jr........................................       7,000        *
R. James Comeaux............................................       7,000        *
William B. Hewitt...........................................      29,000        *
Ilan Kaufthal...............................................      29,000        *
Jack E. Knott...............................................      47,333(4)     *
Charles E. O'Connell........................................       4,000        *
Richard C. Perry............................................     602,400(5)     3.2%
Andrew J. Smith.............................................     103,557        *
Stephen C. Swid.............................................     639,254        3.4%
Named Executive Officers (excluding any director named
  above)
  and Group
James M. Ruberto............................................      43,333        *
Jonathan R. Wheeler.........................................      38,500        *
All current directors and executive officers as a group (15
  persons)..................................................   1,659,430        8.7%
</TABLE>
 
- ---------------
 
 *  Less than 1%
 
(1) All shares listed are directly held with sole voting and investment power
    unless otherwise indicated.
 
(2) Includes shares subject to stock options which are exercisable within 60
    days by the following individuals and group in the following amounts: Dr.
    Anderson -- 52,583; Mr. Ball -- 2,000; Mr. Bartley -- 4,000; Mr.
    Comeaux -- 4,000; Mr. Hewitt -- 2,000; Mr. Kaufthal -- 29,000; Mr.
    Knott -- 43,333; Mr. O'Connell -- 4,000; Mr. Smith -- 77,000; Mr.
    Ruberto -- 43,333; Mr. Wheeler -- 38,000; and all directors and executive
    officers as a group -- 350,919.
 
(3) Includes 100 shares owned by a corporation of which Dr. Anderson owns 50% of
    the outstanding stock and shares voting and investment power.
 
(4) Includes 3,000 shares held by Mr. Knott's spouse in a custodial capacity
    under the Uniform Gift to Minors Act.
 
(5) All shares are owned beneficially by Perry Corp. for the benefit of investor
    accounts managed and controlled by Perry Corp. As controlling stockholder of
    Perry Corp., Mr. Perry may be deemed a beneficial owner of all or a portion
    of such shares.
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     A son of Andrew J. Smith, the Chief Executive Officer and a director of the
Company, became a Vice President of Orion Pacific, Inc. ("Orion") in 1990 and
was a shareholder of Orion between 1993 and 1994. In August 1993, the son of Mr.
Smith resigned as an officer and employee of Orion. Pursuant to contractual
arrangements originated in 1988,(i) the Company sells to Orion certain discarded
byproducts which Orion extracts from Company landfills and (ii) Orion packages
and processes a portion of the REXtac APAO manufactured by the Company at its
plant in Odessa, Texas. During the year ended December 31, 1996, the Company
sold approximately $36,000 of such by-products to Orion in the ordinary course
of business. For the same period, the Company purchased approximately $1.3
million of APAO processing and packaging services and miscellaneous materials
from Orion. The Company has also agreed to pay Orion an additional $250,000
 
                                       28
<PAGE>   131
 
per plant for each APAO plant utilizing the technology which the Company builds
or licenses outside the United States (excluding a former joint venture plant in
Japan). The Company currently licenses this technology to Orion so that Orion
can continue providing these services to the Company.
 
     Ilan Kaufthal, a director of the Company, is a managing director of
Schroder Wertheim & Co. Incorporated, which provides investment banking services
to the Company from time to time and which has been retained by the Company to
act as its financial advisor in connection with an unsolicited offer to purchase
the Company . See "Item 1 -- Business -- Recent Developments."
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
(a) 1.     Consolidated Financial Statements:
 
           See Index to Consolidated Financial Statements on page F-1.
 
    2.     Financial Statement Schedules:
 
           See Index to Consolidated Financial Statements on page F-1.
 
    3.     Exhibits:
 
<TABLE>
      <C>                      <S>
               2.1             -- First Amended Plan of Reorganization of Rexene Products
                                  Company, et al., dated April 29, 1992 (filed as Exhibit
                                  2.1 to Rexene Corporation's Form 8-K Current Report dated
                                  July 7, 1992 and incorporated herein by reference).
               2.2             -- Order Confirming First Amended Plan of Reorganization,
                                  dated April 29, 1992 (filed as Exhibit 2.2 to Rexene
                                  Corporation's Annual Report on Form 10-K for the fiscal
                                  year ended December 31, 1992 and incorporated herein by
                                  reference).
               2.3             -- Plan and Agreement of Merger, between Rexene Corporation
                                  and Rexene Products Company, dated as of September 11,
                                  1992 (filed as Exhibit 2.3 to Rexene Corporation's Annual
                                  Report on Form 10-K for the fiscal year ended December
                                  31, 1992 and incorporated herein by reference).
               3.1.1           -- Restated Certificate of Incorporation of Rexene Products
                                  Company (a/k/a Rexene Corporation), dated September 11,
                                  1992 (filed as Exhibit 3.1 to Rexene Corporation's Annual
                                  Report on Form 10-K for the fiscal year ended December
                                  31, 1992 and incorporated herein by reference).
               3.1.2           -- Amendment to Certificate of Incorporation, dated June 9,
                                  1993 (filed as Exhibit 3.1.2 to Rexene Corporation's
                                  Annual Report on Form 10-K for the year ended December
                                  31, 1993 and incorporated herein by reference).
               3.2             -- Amendments to By-Laws, adopted May 24, 1994, together
                                  with a restatement of Rexene Corporation's By-Laws
                                  incorporating all amendments through May 24, 1994 (filed
                                  as Exhibit 3.2.3 to Rexene Corporation's Form 10-Q
                                  Quarterly Report for the three months ended June 30, 1994
                                  and incorporated herein by reference).
               4.1             -- Indenture, dated as of November 29, 1994, between Rexene
                                  Corporation, as Issuer, and Bank One, Texas, N.A., as
                                  Trustee, for $175,000,000 11 3/4% Senior Notes due 2004
                                  (filed as Exhibit 4.1 to Rexene Corporation's Annual
                                  Report on Form 10-K for the fiscal year ended December
                                  31, 1994 and incorporated herein by reference).
</TABLE>
 
                                       29
<PAGE>   132
<TABLE>
      <C>                      <S>
               4.2.1           -- Stockholder Rights Agreement, between Rexene Corporation
                                  and American Stock Transfer & Trust Company, as Rights
                                  Agent, dated as of January 26, 1993 (filed as Exhibit
                                  4.20 to Rexene Corporation's Annual Report on Form 10-K
                                  for the fiscal year ended December 31, 1992 and
                                  incorporated herein by reference).
               4.2.2           -- Amendment No. 1 to Stockholder Rights Agreement (filed as
                                  Exhibit 1 to Rexene Corporation's Form 8-A/A filed on
                                  October 21, 1994 and incorporated herein by reference).
               4.2.3           -- Amendment No. 2 to Stockholder Rights Agreement (filed as
                                  Exhibit 99.4 to Rexene Corporation's Form 8-A/A filed on
                                  July 26, 1996 and incorporated herein by reference).
              10.1*            -- Rexene Corporation 1988 Stock Incentive Plan (filed as
                                  Exhibit 10.5 to Rexene Corporation's Registration
                                  Statement on Form S-1 (SEC No. 33-22723) and incorporated
                                  herein by reference).
              10.2*            -- Rexene Corporation 1993 Non-Qualified Stock Option Plan
                                  (filed as Exhibit 10.2 to Rexene Corporation's Annual
                                  Report on Form 10-K for the fiscal year ended December
                                  31, 1992 and incorporated herein by reference).
              10.3*            -- Rexene Corporation 1994 Long-Term Incentive Plan (filed
                                  as Exhibit 10.2 to Amendment No. 1 to Rexene
                                  Corporation's Registration Statement on Form S-3 (SEC
                                  File No. 33-55507) as filed on October 21, 1994 and
                                  incorporated herein by reference).
              10.4*            -- Non-Qualified Stock Option Plan for Outside Directors of
                                  Rexene Corporation (filed as Exhibit 10.3 to Rexene
                                  Corporation's Annual Report on Form 10-K for the fiscal
                                  year ended December 31, 1992 and incorporated herein by
                                  reference).
              10.5*            -- 1995 Stock Option Plan for Outside Directors (filed as
                                  Exhibit 10.19 to Rexene Corporation's Form 10-Q Quarterly
                                  Report for the three months ended June 30, 1995 and
                                  incorporated herein by reference).
              10.6*            -- Rexene Corporation Supplemental Executive Retirement Plan
                                  (filed as Exhibit 10.3 to Amendment No. 1 to Rexene
                                  Corporation's Registration Statement on Form S-3 (SEC
                                  File No. 33-55507) as filed on October 21, 1994 and
                                  incorporated herein by reference).
              10.6.1*          -- Amendment No. 1 to Rexene Corporation Supplemental
                                  Executive Retirement Plan, dated as of June 1, 1996
                                  (filed as Exhibit 10.6.1 to Rexene Corporation's
                                  Quarterly Report on Form 10-Q for the quarterly period
                                  ended June 30, 1996 and incorporated herein by
                                  reference).
              10.6.2*          -- Amendment No. 2 to Rexene Corporation Supplemental
                                  Executive Retirement Plan, dated as of July 26, 1996
                                  (filed as Exhibit 10.6.2 to Rexene Corporation's
                                  Quarterly Report on Form 10-Q for the quarterly period
                                  ended June 30, 1996 and incorporated herein by
                                  reference).
              10.7.1*          -- Rexene Corporation 1995 Annual Incentive Bonus Plan
                                  (filed as Exhibit 10.6.3 to Rexene Corporation's Annual
                                  Report on Form 10-K for the fiscal year ended December
                                  31, 1994 and incorporated herein by reference).
              10.7.2*          -- Rexene Corporation Executive Management Committee Annual
                                  Incentive Plan.
              10.7.3*          -- Rexene Corporation 1996 Performance Unit Program for
                                  Executive Officers.
              10.7.4*          -- Rexene Corporation Long Term Performance Unit Program for
                                  Executive Officers.
</TABLE>
 
                                       30
<PAGE>   133
<TABLE>
      <C>                      <S>
              10.8.1*          -- Rexene Corporation Executive Management Committee
                                  Severance Policy (filed as Exhibit 10.5 to Rexene
                                  Corporation's Annual Report on Form 10-K for the fiscal
                                  year ended December 31, 1992 and incorporated herein by
                                  reference).
              10.8.2*          -- Form of Letter Agreement between Rexene Corporation and
                                  each member of its Executive Management Committee (filed
                                  as Exhibit 10.8.2 to Rexene Corporation's Quarterly
                                  Report on Form 10-Q for the quarterly period ended June
                                  30, 1996 and incorporated herein by reference).
              10.9.1*          -- Executive Security Plan of Rexene Products Company (filed
                                  as Exhibit 10.8 to Rexene Corporation's Registration
                                  Statement on Form S-1 (SEC No. 33-22723) and incorporated
                                  herein by reference).
              10.9.2*          -- Form of Letter Agreement between Rexene Corporation and
                                  L. N. Anderson and J. E. Knott dated as of March 1, 1995
                                  relating to waiver of certain rights under the Executive
                                  Security Plan (filed as Exhibit 10.9.2 to Rexene Corpora-
                                  tion's Annual Report on Form 10-K for the year ended
                                  December 31, 1995 and incorporated herein by reference).
              10.10*           -- Indemnity Agreement, dated as of May 25, 1990, by and
                                  among Rexene Corporation, Rexene Products Company and
                                  Andrew J. Smith (filed as Exhibit 10.8.2 to Rexene
                                  Corporation's Annual Report on Form 10-K for the fiscal
                                  year ended December 31, 1992 and incorporated herein by
                                  reference).
              10.11.1*         -- Non-Qualified Stock Option Agreement, dated as of June
                                  15, 1988, between Rexene Corporation and Lavon N.
                                  Anderson (filed as Exhibit 10.29.2 to Rexene
                                  Corporation's Registration Statement on Form S-1 (SEC No.
                                  33-22723) and incorporated herein by reference).
              10.11.2*         -- Indemnity Agreement, dated as of May 25, 1990, by and
                                  among Rexene Corporation, Rexene Products Company and
                                  Lavon N. Anderson (filed as Exhibit 10.9.3 to Rexene
                                  Corporation's Annual Report on Form 10-K for the fiscal
                                  year ended December 31, 1992 and incorporated herein by
                                  reference).
              10.12*           -- Employment Agreement, dated as of May 29, 1990, between
                                  Rexene Products Company and Jack E. Knott (filed as
                                  Exhibit 10.15 to Rexene Corporation's Annual Report on
                                  Form 10-K for the year ended December 31, 1990 and
                                  incorporated herein by reference).
              10.13.1          -- Amended and Restated Credit Agreement dated as of April
                                  24, 1996, among Rexene Corporation, as Borrower, The Bank
                                  of Nova Scotia, as Agent, and the Lenders Signatory
                                  thereto (filed as Exhibit 10.15.3 to Rexene Corporation's
                                  Quarterly Report on Form 10-Q for the quarterly period
                                  ended March 31, 1996 and incorporated herein by
                                  reference).
              10.13.2          -- Money Market Grid Promissory Note, dated August 5, 1996,
                                  payable to the order of the Bank of Nova Scotia (filed as
                                  Exhibit 10.15.4 to Rexene Corporation's Quarterly Report
                                  on Form 10-Q for the quarterly period ended June 30, 1996
                                  and incorporated herein by reference).
              10.13.3          -- First Amendment and Supplement to Credit Agreement,
                                  effective March 14, 1997, among Rexene Corporation, as
                                  Borrower, The Bank of Nova Scotia, as Agent, and the
                                  Lenders Signatory thereto.
              10.14*           -- Indemnity Agreement, dated as of May 25, 1990, by and
                                  among Rexene Corporation, Rexene Products Company and
                                  William B. Hewitt (filed as Exhibit 10.22 to Rexene
                                  Corporation's Annual Report on Form 10-K for the year
                                  ended December 31, 1992, and incorporated herein by
                                  reference).
              21.1             -- Subsidiaries of Rexene Corporation.
</TABLE>
 
                                       31
<PAGE>   134
<TABLE>
      <C>                      <S>
              23.1             -- Consent of Price Waterhouse LLP.
              27.1             -- Financial Data Schedule.
              99.1             -- Press Release, dated July 22, 1996, announcing rejection
                                  of Huntsman unsolicited takeover bid (filed as Exhibit
                                  99.1 to Rexene Corporation's Quarterly Report on Form
                                  10-Q for the quarterly period ended June 30, 1996 and
                                  incorporated herein by reference).
              99.2             -- Letter to Shareholders, dated July 25, 1996 (filed as
                                  Exhibit 99.2 to Rexene Corporation's Quarterly Report on
                                  Form 10-Q for the quarterly period ended June 30, 1996
                                  and incorporated herein by reference).
              99.3             -- Press Release, dated August 5, 1996, announcing rejection
                                  of second unsolicited Huntsman proposal (filed as Exhibit
                                  99.3 to Rexene Corporation's Quarterly Report on Form
                                  10-Q for the quarterly period ended June 30, 1996 and
                                  incorporated herein by reference).
              99.4             -- Letter to Shareholders, dated September 3, 1996.
</TABLE>
 
- ---------------
 
* Management contract or compensatory plan or arrangement required to be filed
  as an exhibit hereto.
 
(b) No Form 8-K was filed in the fourth quarter of 1996.
 
                                       32
<PAGE>   135
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, hereunto duly authorized, as of March 24, 1997.
 
                                            REXENE CORPORATION
 
                                            Registrant
 
                                            By:     /s/ ANDREW J. SMITH
                                              ----------------------------------
                                                       Andrew J. Smith
                                                  Chairman of the Board and
                                                   Chief Executive Officer
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below as of March 24, 1997 by the following persons on
behalf of the registrant and in the capacities indicated.
 
<TABLE>
<C>                                                    <C>
                 /s/ ANDREW J. SMITH                                   /s/ LAVON N. ANDERSON
- -----------------------------------------------------  -----------------------------------------------------
                   Andrew J. Smith                                       Lavon N. Anderson
          Chief Executive Officer, Chairman                        President and Chief Operating
              of the Board and Director                                Officer and Director
 
                  /s/ JAMES R. BALL                                  /s/ HARRY B. BARTLEY, JR.
- -----------------------------------------------------  -----------------------------------------------------
                    James R. Ball                                      Harry B. Bartley, Jr.
                      Director                                               Director
 
                /s/ R. JAMES COMEAUX                                   /s/ WILLIAM B. HEWITT
- -----------------------------------------------------  -----------------------------------------------------
                  R. James Comeaux                                       William B. Hewitt
                      Director                                               Director
 
                  /s/ ILAN KAUFTHAL                                      /s/ JACK E. KNOTT
- -----------------------------------------------------  -----------------------------------------------------
                    Ilan Kaufthal                                          Jack E. Knott
                      Director                                 Executive Vice President and Director
 
                /s/ CHARLES O'CONNELL                                     /s/ GEFF PERERA
- -----------------------------------------------------  -----------------------------------------------------
                  Charles O'Connell                                         Geff Perera
                      Director                                     Executive Vice President and
                                                                      Chief Financial Officer
 
                  /s/ RICHARD PERRY                                     /s/ STEPHEN C. SWID
- -----------------------------------------------------  -----------------------------------------------------
                    Richard Perry                                         Stephen C. Swid
                      Director                                               Director
</TABLE>
 
                                       33
<PAGE>   136
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
                               ITEMS 8 AND 14(A)
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                               PAGE
                                                              ------
<S>                                                           <C>
Responsibility for the Consolidated Financial Statements....     F-2
Report of Independent Accountants...........................     F-3
Consolidated Financial Statements:
  Consolidated Statements of Operations for the Years Ended
     December 31, 1996,
     1995 and 1994..........................................     F-4
  Consolidated Balance Sheets as of December 31, 1996 and
     1995...................................................     F-5
  Consolidated Statements of Changes in Stockholders' Equity
     (Deficit) for the Years Ended December 31, 1996, 1995
     and 1994...............................................     F-6
  Consolidated Statements of Cash Flows for the Years Ended
     December 31, 1996,
     1995 and 1994..........................................     F-7
  Notes to Consolidated Financial Statements................  F-8-24
</TABLE>
 
All Financial Statement Schedules have been omitted because (i) the required
information is not present in amounts sufficient to require submission of the
schedule, (ii) the information required is included in the Consolidated
Financial Statements or the Notes thereto, or (iii) the information required in
the schedules is not applicable to the Company.
 
                                       F-1
<PAGE>   137
 
             RESPONSIBILITY FOR THE CONSOLIDATED FINANCIAL REPORTS
 
     Company management is responsible for the preparation, accuracy and
integrity of the consolidated financial statements and other financial
information included in this Annual Report. This responsibility includes
preparing the statements in accordance with generally accepted accounting
principles and necessarily includes estimates that are based on management's
best judgements.
 
     To help insure the accuracy and integrity of Company financial data,
management maintains internal controls which are designed to provide reasonable
assurance that transactions are executed as authorized, that they are accurately
recorded and that assets are properly safeguarded. These controls are monitored
by an ongoing program of internal audits. It is essential for all Company
employees to conduct their business affairs in keeping with the highest ethical
standards as outlined in our code of conduct policy, "Conduct of Company
Employees." Careful selection of employees, and appropriate divisions of
responsibility, also help us to achieve our control objectives.
 
     The financial statements have been audited by the Company's independent
accountants, Price Waterhouse LLP. Their report is also shown on this page.
 
     The Board of Directors, acting through its Audit Committee composed
entirely of outside directors, oversees the adequacy of the Company's control
environment. The Audit Committee meets periodically with representatives of
Price Waterhouse LLP, internal financial management and the internal auditors to
review accounting, control, auditing and financial reporting matters. The
independent accountants and the internal auditors also have full and free access
to meet privately with the Committee.
 
<TABLE>
<S>                                            <C>
               Andrew J. Smith                                  Geff Perera
           Chief Executive Officer                        Chief Financial Officer
</TABLE>
 
                                       F-2
<PAGE>   138
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Stockholders of
  Rexene Corporation
 
     In our opinion, the accompanying consolidated financial statements listed
on page F-1 present fairly, in all material respects, the financial position of
Rexene Corporation and its subsidiaries (the Company) at December 31, 1996 and
1995, and the results of their operations and their cash flows for each of the
three years in the period ended December 31, 1996, in conformity with generally
accepted accounting principles. These financial statements are the
responsibility of the Company's management; our responsibility is to express an
opinion on these financial statements based on our audits. We conducted our
audits of these statements in accordance with generally accepted auditing
standards which require that we plan and perform the audits to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for the opinion expressed above.
 
PRICE WATERHOUSE LLP
 
Dallas, Texas
February 12, 1997, except as to Note 20,
  for which the date is March 14, 1997
 
                                       F-3
<PAGE>   139
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                 YEARS ENDED DECEMBER 31,
                                                             --------------------------------
                                                               1996        1995        1994
                                                             --------    --------    --------
<S>                                                          <C>         <C>         <C>
Net sales..................................................  $587,761    $615,238    $537,957
                                                             --------    --------    --------
Operating expenses:
  Cost of sales............................................   472,152     437,640     418,048
  Marketing, general and administrative....................    43,482      42,962      37,764
  Research and development.................................     8,691       9,490       7,060
                                                             --------    --------    --------
                                                              524,325     490,092     462,872
                                                             --------    --------    --------
Operating income...........................................    63,436     125,146      75,085
Interest expense...........................................   (15,684)    (24,343)    (49,885)
Interest income............................................     1,810       3,250       2,337
Other, net.................................................    (1,733)       (174)      7,524
                                                             --------    --------    --------
Income before income taxes and extraordinary loss..........    47,829     103,879      35,061
Income tax expense.........................................   (18,098)    (38,436)    (13,557)
                                                             --------    --------    --------
Income before extraordinary loss...........................    29,731      65,443      21,504
Extraordinary loss.........................................        --          --     (25,831)
                                                             --------    --------    --------
Net income (loss)..........................................  $ 29,731    $ 65,443    $ (4,327)
                                                             ========    ========    ========
Weighted average shares outstanding........................    19,168      19,126      11,663
                                                             ========    ========    ========
Income (loss) per share:
  Income before extraordinary loss.........................  $   1.55    $   3.42    $   1.84
  Extraordinary loss.......................................        --          --       (2.21)
                                                             --------    --------    --------
  Net income (loss)........................................  $   1.55    $   3.42    $  (0.37)
                                                             ========    ========    ========
</TABLE>
 
                See notes to consolidated financial statements.
 
                                       F-4
<PAGE>   140
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
                          CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                              --------------------
                                                                1996        1995
                                                              --------    --------
<S>                                                           <C>         <C>
Cash and cash equivalents...................................  $    714    $ 47,258
Deposit held in trust.......................................        --       3,547
Accounts receivable, net....................................    85,340      73,520
Inventories.................................................    81,026      62,257
Deferred income taxes.......................................     2,816       5,663
Prepaid expenses and other..................................       301         531
                                                              --------    --------
          Total current assets..............................   170,197     192,776
                                                              --------    --------
Property, plant and equipment, net..........................   383,700     291,675
Intangible assets, net......................................    15,570      11,811
Other noncurrent assets.....................................    28,075      24,329
                                                              --------    --------
                                                              $597,542    $520,591
                                                              ========    ========
 
                       LIABILITIES AND STOCKHOLDERS' EQUITY
 
Accounts payable............................................  $ 55,030    $ 29,768
Income taxes payable........................................       594      30,778
Accrued liabilities.........................................    13,772      14,319
Accrued interest............................................     1,889       1,714
Employee benefits payable...................................     6,823       7,781
                                                              --------    --------
          Total current liabilities.........................    78,108      84,360
                                                              --------    --------
Long-term debt..............................................   235,000     175,000
Other noncurrent liabilities................................    62,459      67,107
Deferred income taxes.......................................    52,924      53,973
Commitments and contingencies...............................        --          --
Stockholders' equity:
  Preferred stock, par value $.01 per share; 1 million
     shares authorized; none issued and outstanding,
     respectively...........................................        --          --
  Common stock, par value $.01 per share; 100 million shares
     authorized;
     18.8 and 18.7 million shares issued and outstanding,
     respectively...........................................       188         187
  Paid-in capital...........................................   111,553     111,247
  Retained earnings.........................................    55,320      28,595
  Foreign currency translation adjustment...................     1,990         122
                                                              --------    --------
          Total stockholders' equity........................   169,051     140,151
                                                              --------    --------
                                                              $597,542    $520,591
                                                              ========    ========
</TABLE>
 
                See notes to consolidated financial statements.
 
                                       F-5
<PAGE>   141
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
      CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT)
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                              FOREIGN
                                    COMMON STOCK                RETAINED     CURRENCY
                                   ---------------   PAID-IN    EARNINGS    TRANSLATION
                                   SHARES   AMOUNT   CAPITAL    (DEFICIT)   ADJUSTMENT     TOTAL
                                   ------   ------   --------   ---------   -----------   --------
<S>                                <C>      <C>      <C>        <C>         <C>           <C>
Balance, December 31, 1993.......  10,501    $105    $ 26,529   $(31,771)     $   --      $ (5,137)
  Issuance of common stock.......   8,124      81      83,826         --          --        83,907
  Foreign currency translation
     adjustment..................      --      --          --         --         433           433
  Net loss.......................      --      --          --     (4,327)         --        (4,327)
                                   ------    ----    --------   --------      ------      --------
Balance, December 31, 1994.......  18,625     186     110,355    (36,098)        433        74,876
  Issuance of common stock.......     120       1         365         --          --           366
  Tax benefit of directors' and
     employees' compensation
     deduction...................      --      --         527         --          --           527
  Foreign currency translation
     adjustment..................      --      --          --         --        (311)         (311)
  Dividends on common stock ($.04
     per share)..................      --      --          --       (750)         --          (750)
  Net income.....................      --      --          --     65,443          --        65,443
                                   ------    ----    --------   --------      ------      --------
Balance, December 31, 1995.......  18,745     187     111,247     28,595         122       140,151
  Issuance of common stock.......      63       1         240         --          --           241
  Tax benefit of directors' and
     employees' compensation
     deduction...................      --      --          66         --          --            66
  Foreign currency translation
     adjustment..................      --      --          --         --       1,868         1,868
  Dividends on common stock ($.16
     per share)..................      --      --          --     (3,006)         --        (3,006)
  Net income.....................      --      --          --     29,731          --        29,731
                                   ------    ----    --------   --------      ------      --------
Balance, December 31, 1996.......  18,808    $188    $111,553   $ 55,320      $1,990      $169,051
                                   ======    ====    ========   ========      ======      ========
</TABLE>
 
                See notes to consolidated financial statements.
 
                                       F-6
<PAGE>   142
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                               YEARS ENDED DECEMBER 31,
                                                          -----------------------------------
                                                            1996         1995         1994
                                                          ---------    ---------    ---------
<S>                                                       <C>          <C>          <C>
Cash flows from operating activities:
  Net income (loss).....................................  $  29,731    $  65,443    $  (4,327)
  Adjustments to reconcile net income (loss) to net cash
     provided by operating activities:
     Depreciation and amortization......................     23,402       21,475       18,959
     Deferred income taxes..............................      1,750        5,168       (2,476)
     Amortization of debt issuance costs................      1,297        2,876           --
     Extraordinary loss, net of income taxes............         --           --       25,831
     Reversal of lawsuit judgment.......................         --           --       (7,400)
     Non-cash interest expense..........................         --           --       19,441
     Change in:
       Deposits held in trust...........................      3,547        4,453           --
       Accounts receivable..............................    (11,597)       3,872      (19,588)
       Inventories......................................    (18,628)       5,943      (10,111)
       Prepaid expenses and other.......................        235          567          413
       Income taxes.....................................    (30,118)      32,952       19,550
       Accounts payable.................................     25,106       (8,254)      10,621
       Accrued interest.................................        175         (180)      (1,203)
       Employee benefits payable and accrued
          liabilities...................................       (976)       2,369        3,528
       Other noncurrent liabilities.....................       (549)      (2,492)       3,189
     Other..............................................     (5,166)      (1,716)      (3,643)
                                                          ---------    ---------    ---------
          Total adjustments.............................    (11,522)      67,033       57,111
                                                          ---------    ---------    ---------
Net cash provided by operating activities...............     18,209      132,476       52,784
                                                          ---------    ---------    ---------
Cash flows used for investing activities -- capital
  expenditures..........................................   (113,792)     (54,606)     (30,876)
                                                          ---------    ---------    ---------
Cash flows from financing activities:
  Repayment of debt.....................................         --     (100,000)    (352,629)
  Advance payment from customer, net of repayments......     (3,600)      23,200           --
  Proceeds from issuance of common stock, net...........        241          366       83,907
  Cash dividends paid...................................     (3,004)          --           --
  Proceeds from issuance of debt........................         --           --      275,000
  Bank borrowing........................................     60,000           --        7,000
  Repayment of bank borrowing...........................         --           --       (9,000)
  Debt issuance costs and other.........................     (4,598)          --      (10,899)
                                                          ---------    ---------    ---------
Net cash provided by (used for) financing activities....     49,039      (76,434)      (6,621)
                                                          ---------    ---------    ---------
Net increase (decrease) in cash and cash equivalents....    (46,544)       1,436       15,287
Cash and cash equivalents at beginning of year..........     47,258       45,822       30,535
                                                          ---------    ---------    ---------
Cash and cash equivalents at end of year................  $     714    $  47,258    $  45,822
                                                          =========    =========    =========
Supplemental cash flow information:
  Cash paid for interest................................  $  21,951    $  23,740    $  30,915
  Cash paid for income taxes............................  $  46,551    $   1,933    $   2,451
</TABLE>
 
                See notes to consolidated financial statements.
 
                                       F-7
<PAGE>   143
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
THE COMPANY
 
     Rexene Corporation (the "Company") manufactures and markets a wide variety
of products through two operating divisions. The products range from value added
specialty products, such as customized plastic films, to commodity
petrochemicals, such as styrene. These products are used in a wide variety of
industrial and consumer-related applications. The Company's principal products
are plastic film, polyethylene, polypropylene, REXtac(R) amorphous
polyalphaolefin ("APAO"), styrene and, beginning in 1997, REXflex(R) FPO. The
markets in which the Company competes are cyclical markets that are sensitive to
relative changes in supply and demand, which in turn are affected by general
economic conditions. The Company's plastic film and APAO businesses are
generally less sensitive to the economic cycles.
 
MANAGEMENT ASSUMPTIONS
 
     The preparation of the consolidated financial statements requires
management to make estimates and assumptions that affect the reported amounts of
assets, liabilities and disclosure of contingent assets and liabilities and the
reported amounts of revenues and expenses. Actual results could differ from
these estimates.
 
PRINCIPLES OF CONSOLIDATION
 
     The consolidated financial statements of the Company include its
wholly-owned subsidiaries. Intercompany transactions and balances are
eliminated.
 
CASH AND CASH EQUIVALENTS
 
     Cash equivalents represent short-term investments with original maturities
of three months or less.
 
INVENTORIES
 
     Inventories are stated at the lower of cost or market using the first-in,
first-out method.
 
PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment is stated at cost. Depreciation is provided
utilizing the straight-line method over the estimated useful lives of the
assets, ranging from 3 to 20 years. Improvements are capitalized, while repair
and maintenance costs are charged to operations as incurred. Interest costs are
capitalized as part of major construction projects. Upon disposal of assets, the
cost and related accumulated depreciation are removed from the accounts and the
resulting gain or loss is included in income.
 
INTANGIBLE ASSETS
 
     Debt issuance costs are amortized over the term of the related debt,
ranging from five to ten years. Reorganization value in excess of amounts
allocable to identifiable assets is amortized on a straight-line basis over
fifteen years. Other intangible assets are stated at cost and consist primarily
of licensing agreements and patents, which are amortized on a straight-line
basis over five years.
 
INCOME TAXES
 
     The Company accounts for income taxes following an asset and liability
approach to financial accounting and reporting of income taxes.
 
                                       F-8
<PAGE>   144
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
FOREIGN CURRENCY TRANSLATION
 
     Operations of the Company's foreign subsidiary use the local currency of
the country of operation as the functional currency. The financial statements of
the foreign subsidiary are translated at current and average exchange rates,
with any resulting translation adjustments included in the foreign currency
translation adjustment account in stockholders' equity.
 
INCOME (LOSS) PER SHARE
 
     Income (Loss) per share is based on the weighted average number of shares
of common stock and, if dilutive, common stock equivalents outstanding.
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     The carrying values of current assets and liabilities approximate fair
value. At December 31, 1996 and 1995, the fair value of the $175 million
principal amount 11 3/4% Senior Notes was approximately $194 million and $187
million, respectively, based on quoted market rates.
 
RECLASSIFICATIONS
 
     Certain amounts in the consolidated financial statements for periods prior
to 1996 have been reclassified to conform with the 1996 presentation.
 
NEW ACCOUNTING STANDARDS
 
     In October 1995, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standard ("SFAS") No. 123, "Accounting for Stock-Based
Compensation," which generally establishes financial accounting and reporting
standards for stock-based employee compensation plans. As permitted by SFAS No.
123, the Company continues to account for such plans in accordance with
Accounting Principles Board Opinion No. 25 and provides certain disclosures
required by SFAS No. 123.
 
     During 1995, the Company adopted SFAS No. 121, "Impairment of Long-Lived
Assets." There was no adjustment recorded as a result of adopting this standard.
The Company periodically compares the carrying value of its long-lived assets,
principally property, plant and equipment, to undiscounted cash flows generated
by the long-lived assets. The Company's undiscounted cash flows exceed the
carrying value of its long-lived assets.
 
2. RECAPITALIZATION
 
     In the fourth quarter of 1994, the Company completed a recapitalization
plan (the "Recapitalization") consisting of (i) the issuance of 8 million shares
of common stock at $11.00 per share, (ii) the issuance of 11 3/4% Senior Notes
due 2004 (the "11 3/4% Senior Notes") in an aggregate principal amount of $175
million, (iii) the establishment of a new credit facility (the "Credit
Agreement"), providing the Company with a $100 million term loan (the "Term
Loan") and an $80 million revolving line of credit (the "Revolving Credit
Facility"), (iv) the redemption and defeasance of the Company's existing
increasing rate senior notes (the "Old Notes"), and (v) the repayment in full of
the then outstanding indebtedness under the Company's existing credit agreement.
In connection with the redemption of the Old Notes, the Company recorded an
extraordinary loss of $25.8 million (net of income tax benefits of $15.8
million).
 
                                       F-9
<PAGE>   145
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
3. ACCOUNTS RECEIVABLE
 
     Accounts receivable consist of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1996       1995
                                                              -------    -------
<S>                                                           <C>        <C>
Trade.......................................................  $77,822    $65,719
Other.......................................................   11,030     11,175
                                                              -------    -------
                                                               88,852     76,894
Less allowances for bad debts and returns...................   (3,512)    (3,374)
                                                              -------    -------
                                                              $85,340    $73,520
                                                              =======    =======
</TABLE>
 
     Net additions to (deductions from) the allowance accounts were $138,000,
($595,000) and $162,000 for 1996, 1995 and 1994, respectively.
 
4. INVENTORIES
 
     Inventories consist of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1996       1995
                                                              -------    -------
<S>                                                           <C>        <C>
Raw materials...............................................  $30,145    $20,144
Work in progress............................................    8,561      5,356
Finished goods..............................................   42,320     36,757
                                                              -------    -------
                                                              $81,026    $62,257
                                                              =======    =======
</TABLE>
 
5. PROPERTY, PLANT AND EQUIPMENT
 
     Property, plant and equipment consists of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                              --------------------
                                                                1996        1995
                                                              --------    --------
<S>                                                           <C>         <C>
Land........................................................  $  5,874    $  5,823
Buildings...................................................    34,588      22,697
Plant and equipment.........................................   359,243     284,749
Construction in progress....................................    61,764      34,258
                                                              --------    --------
                                                               461,469     347,527
Less accumulated depreciation...............................   (77,769)    (55,852)
                                                              --------    --------
                                                              $383,700    $291,675
                                                              ========    ========
</TABLE>
 
     Depreciation expense for the years ended December 31, 1996, 1995 and 1994
was $21,768,000, $19,123,000 and $17,426,000, respectively. During the years
ended December 31, 1996, 1995, and 1994, $8,259,000, $2,577,000 and $1,412,000,
respectively, of interest was capitalized in connection with construction
projects.
 
                                      F-10
<PAGE>   146
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
6. INTANGIBLE ASSETS
 
     Intangible assets, net of accumulated amortization are (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1996       1995
                                                              -------    -------
<S>                                                           <C>        <C>
Debt issuance costs.........................................  $14,333    $ 9,735
Less accumulated amortization...............................   (4,288)    (2,991)
                                                              -------    -------
                                                               10,045      6,744
                                                              -------    -------
Reorganization value in excess of amounts allocable to
  identifiable assets.......................................    4,298      4,298
Less accumulated amortization...............................   (1,437)    (1,171)
                                                              -------    -------
                                                                2,861      3,127
                                                              -------    -------
Other intangible assets.....................................    7,377      5,544
Less accumulated amortization...............................   (4,713)    (3,604)
                                                              -------    -------
                                                                2,664      1,940
                                                              -------    -------
                                                              $15,570    $11,811
                                                              =======    =======
</TABLE>
 
7. OTHER NONCURRENT ASSETS
 
     Other noncurrent assets consist of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1996       1995
                                                              -------    -------
<S>                                                           <C>        <C>
Spare parts inventories.....................................  $16,945    $15,760
Unrecognized prior service cost, net of accumulated
  amortization of $741 in 1996 and $389 in 1995.............    2,022      2,763
Deposit in rabbi trust......................................    2,856      2,766
Long-term note receivable...................................    1,550      1,550
Deposits held in trusts.....................................       --      3,547
Other.......................................................    4,702      1,490
                                                              -------    -------
                                                               28,075     27,876
Less: current portion of deposits held in trust.............       --     (3,547)
                                                              -------    -------
                                                              $28,075    $24,329
                                                              =======    =======
</TABLE>
 
     Spare parts inventories are recorded at average cost. In 1995, the Company
deposited $2.8 million in a rabbi trust account to fund a Supplemental Executive
Retirement Plan (see note 15). In 1996, no amounts were deposited in the rabbi
trust account to fund the SERP. The deposits held in trusts for the benefit of
the Texas Natural Resource Conservation Commission ("TNRCC") were established
and funded to comply with the financial assurance requirements of the Resource
Conservation and Recovery Act. Based on the Company's improved financial
condition, the TNRCC released the funds in the trust during 1996.
 
                                      F-11
<PAGE>   147
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
8. ACCRUED LIABILITIES
 
     Accrued liabilities consist of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                                ------------------
                                                                 1996       1995
                                                                -------    -------
<S>                                                             <C>        <C>
Accrued taxes, other than income............................    $ 3,243    $ 2,811
Current portion of advance payment from customer (see note
  10).......................................................      3,600      3,600
Other accrued expenses......................................      6,929      7,908
                                                                -------    -------
                                                                $13,772    $14,319
                                                                =======    =======
</TABLE>
 
9. LONG-TERM DEBT
 
     Long-term debt consists of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                    DECEMBER 31,
                                                                --------------------
                                                                  1996        1995
                                                                --------    --------
<S>                                                             <C>         <C>
Senior Notes due November 2004..............................    $175,000    $175,000
Bank borrowing under the Amended Credit Agreement...........      60,000          --
                                                                --------    --------
                                                                $235,000    $175,000
                                                                ========    ========
</TABLE>
 
SENIOR NOTES
 
     The 11 3/4% Senior Notes rank pari passu in right of payment with all
senior borrowings, including borrowings under the Amended Credit Agreement. The
11 3/4% Senior Notes rank senior in right of payment to any subordinated
indebtedness of the Company. The Company has no such outstanding subordinated
indebtedness at December 31, 1996 and 1995. Interest is payable on the 11 3/4%
Senior Notes semiannually on June 1 and December 1 at an annual interest rate of
11 3/4%. The Company is not required to make mandatory redemption or sinking
fund payments with respect to the 11 3/4% Senior Notes.
 
     The 11 3/4% Senior Notes are not redeemable, in whole or in part, prior to
December 1, 1999, except that, at any time prior to December 1, 1997, the
Company may redeem up to an aggregate of $58.3 million principal amount of
11 3/4% Senior Notes, at a price equal to 110% of the principal amount thereof,
plus accrued and unpaid interest, if any, to the redemption date with the net
cash proceeds of any future offerings of common stock of the Company; provided,
however, that at least $100 million aggregate principal amount of 11 3/4% Senior
Notes is outstanding immediately following each such redemption; and provided
further that each such redemption occurs within 60 days of the date of the
closing of the applicable offering. On or after December 1, 1999, the 11 3/4%
Senior Notes are redeemable, at the Company's option, in whole or in part, at
the redemption prices (expressed as percentages of principal amount) set forth
below plus accrued and unpaid interest, if any, to the date of redemption.
 
<TABLE>
<CAPTION>
YEAR                                                          PERCENTAGE
- ----                                                          ----------
<S>                                                           <C>
1999........................................................   105.875%
2000........................................................   103.917%
2001........................................................   101.958%
2002 and thereafter.........................................   100.000%
</TABLE>
 
     The indenture governing the 11 3/4% Senior Notes contains certain covenants
that, among other things, limit the ability of the Company to incur additional
indebtedness and to repurchase subordinated indebtedness, incur or suffer to
exist certain liens, pay dividends, make certain investments, sell significant
fixed assets and engage in mergers and consolidations.
 
                                      F-12
<PAGE>   148
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
AMENDED AND RESTATED CREDIT AGREEMENT
 
     In April 1996, the Company executed an Amended and Restated Credit
Agreement (the "Amended Credit Agreement") expiring in 2003 which increased
borrowing capacity under the Revolving Credit Facility to $150 million.
Borrowings under the Amended Credit Agreement bear interest at a floating rate
based on the prime rate or, at the Company's option, on the reserve-adjusted
London Interbank offered rate and is secured by the pledge of substantially all
of the assets of the Company, including inventory and accounts receivable and
the proceeds thereof, but excluding the styrene plant in Odessa, Texas and the
property at the plant in Scunthorpe, England. At December 31, 1996,
approximately $2.3 million of stand-by letters of credit were outstanding under
the Amended Credit Agreement and the applicable interest rate on outstanding
borrowings was 7.4%.
 
     The Amended Credit Agreement contains covenants which limit, among other
things, the incurrence of additional indebtedness by the Company, the payment of
dividends, the creation of liens on the Company's assets, the making of certain
investments by the Company, certain mergers, sales of certain fixed assets and
the prepayment of the 11 3/4% Senior Notes. The Amended Credit Agreement also
contains certain financial covenants relating to the financial condition of the
Company, including covenants relating to interest coverage and a leverage ratio.
 
UNSECURED NOTE
 
     On August 5, 1996, the Company executed an agreement with a financial
institution for a $10 million uncommitted, unsecured line of credit (the
"Unsecured Note") for day to day cash flow requirements. As of December 31,
1996, the Unsecured Note had no outstanding balance.
 
10. OTHER NONCURRENT LIABILITIES
 
     Other noncurrent liabilities consist of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1996       1995
                                                              -------    -------
<S>                                                           <C>        <C>
Accrued environmental remediation costs.....................  $18,433    $20,331
Advance payment from customer...............................   16,000     19,600
Accumulated postretirement benefit obligation (see note
  15).......................................................   16,379     15,841
Pension liabilities.........................................    8,076      6,730
Other.......................................................    3,571      4,605
                                                              -------    -------
                                                              $62,459    $67,107
                                                              =======    =======
</TABLE>
 
     In July 1995, the Company received a $25 million advance payment from a
customer as a result of a multi-year agreement to supply a portion of annual
styrene production. The unamortized portion of this advance payment, net of the
current portion, is included as a noncurrent liability above. This advance
payment is secured by a lien on the styrene plant in Odessa, Texas.
 
                                      F-13
<PAGE>   149
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
11. COMMITMENTS
 
     The future payments of rentals on buildings, computers, office equipment
and transportation equipment under the terms of noncancellable operating lease
agreements are as follows (in thousands):
 
<TABLE>
<CAPTION>
FOR THE YEARS ENDING
    DECEMBER 31,
- --------------------
<S>                  <C>                                                           <C>
      1997.......................................................................  $ 7,720
      1998.......................................................................    6,555
      1999.......................................................................    5,837
      2000.......................................................................    4,633
      2001.......................................................................    2,165
      2002 and thereafter........................................................    4,025
                                                                                   -------
                Total minimum lease payments.....................................  $30,935
                                                                                   =======
</TABLE>
 
     Rental expense under operating leases for the years ended December 31,
1996, 1995 and 1994 approximated $8,699,000, $8,902,000 and $7,616,000,
respectively.
 
     In 1997, the Company expects to spend approximately the same amount for
capital expenditures as in 1996.
 
12. INCOME TAXES
 
     Income tax (expense) benefit on the Company's income before extraordinary
loss consists of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 YEARS ENDED DECEMBER 31,
                                                             --------------------------------
                                                               1996        1995        1994
                                                             --------    --------    --------
<S>                                                          <C>         <C>         <C>
Current:
  Federal..................................................  $(14,324)   $(30,376)   $(13,883)
  State....................................................    (2,024)     (2,892)     (2,150)
Deferred...................................................    (1,750)     (5,168)      2,476
                                                             --------    --------    --------
                                                             $(18,098)   $(38,436)   $(13,557)
                                                             ========    ========    ========
</TABLE>
 
     In addition, for the year ended December 31, 1994, the Company recorded an
income tax benefit of $15.8 million as a result of the extraordinary loss from
the Recapitalization.
 
                                      F-14
<PAGE>   150
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The statutory federal income tax rate was 35% for the years ended December
31, 1996, 1995 and 1994. The effective income tax rate differs from the amount
computed by applying the statutory federal income tax rate to the Company's
income before income taxes and extraordinary loss. The reasons for these
differences are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                         YEARS ENDED DECEMBER 31,
                                                     --------------------------------
                                                       1996        1995        1994
                                                     --------    --------    --------
<S>                                                  <C>         <C>         <C>
Income tax expense computed at statutory federal
  tax rate.........................................  $(16,740)   $(36,358)   $(12,271)
State income taxes.................................    (1,316)     (1,880)       (554)
Non-deductible amortization and expenses...........      (246)       (544)       (245)
Non-cash interest..................................        --          --      (1,771)
Effect of Foreign Sales Corporation................       349       1,013          --
Other, net.........................................      (145)       (667)      1,284
                                                     --------    --------    --------
Income tax expense.................................  $(18,098)   $(38,436)   $(13,557)
                                                     ========    ========    ========
</TABLE>
 
     The net deferred income tax liability consists of the following (in
thousands):
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                              --------------------
                                                                1996        1995
                                                              --------    --------
<S>                                                           <C>         <C>
Property, plant and equipment...............................  $ 73,142    $ 71,452
Intangible assets...........................................     1,709         737
                                                              --------    --------
  Gross deferred tax liabilities............................    74,851      72,189
                                                              --------    --------
Accounts receivable.........................................    (1,392)     (2,311)
Inventories.................................................      (361)       (659)
Tax losses and credits carried forward......................    (3,526)     (1,358)
Other noncurrent assets.....................................    (1,686)     (1,321)
Other noncurrent liabilities................................   (16,765)    (16,895)
Other current assets and liabilities........................    (1,013)     (1,335)
                                                              --------    --------
  Gross deferred tax assets.................................   (24,743)    (23,879)
                                                              --------    --------
                                                              $ 50,108    $ 48,310
                                                              ========    ========
</TABLE>
 
     The Company has unused net operating loss carryforwards of $8.1 million in
the United Kingdom, which do not expire. In 1994, the Company received $5.5
million in income tax refunds related to the carryback of the 1993 and 1992 net
operating losses to the year ended December 31, 1990.
 
13. INTEREST EXPENSE
 
     For the years ended December 31, 1996 and 1995, interest expense consists
of (i) interest on the 11 3/4% Senior Notes, (ii) interest on the Amended Credit
Agreement or Term Loan and, (iii) amortization of debt issuance costs, net of
(iv) an allocation for interest capitalized in connection with construction
projects (see note 5). For the year ended December 31, 1994, interest expense
consists of (i) interest on the Old Notes, (ii) accretion on the Old Notes and
(iii) an adjustment for Emerging Issues Task Force Issue No. 86-15 "Increasing
Rate Debt," net of (iv) an allocation for interest capitalized in connection
with construction projects.
 
                                      F-15
<PAGE>   151
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
14. OTHER INFORMATION
 
     Export sales were $54,138,000, $77,508,000, and $52,382,000 for the years
ended December 31, 1996, 1995 and 1994, respectively.
 
     Other income for the year ended December 31, 1994 includes the reversal of
a $7.4 million lawsuit accrual for which the Company ultimately prevailed on
appeal.
 
     Maintenance and repair expenses were $29,343,000, $28,606,000, and
$27,335,000 for the years ended December 31, 1996, 1995 and 1994, respectively.
 
15. EMPLOYEE BENEFITS
 
SAVINGS PLAN
 
     The Company sponsors an employee savings plan (the "Savings Plan") that
provides participating employees with additional income upon retirement.
Employees may contribute between 1% and 10% of their base salary up to a maximum
of $9,500 annually to the Savings Plan. The Company matches a minimum of 25% of
the employee's aggregate contributions up to 6% of the employee's base salary.
Employee contributions are fully vested. Employer contributions are fully vested
upon retirement or after five years of service. For 1996, 1995 and 1994, the
Company matched 25% of the employee contributions up to the 6% limit,
contributing approximately $526,000, $388,000, and $395,000 to the Savings Plan,
respectively.
 
PENSION AND RETIREMENT PLANS
 
     The Company has two noncontributory defined benefit plans (the "Pension
Plans") covering substantially all full time employees. Benefits provided under
the Pension Plans are primarily based on years of service and the employee's
final average earnings. The Company's funding policy is to contribute annually
an amount based upon actuarial and economic assumptions designed to achieve
adequate funding of projected benefit obligations.
 
     The Company has a Supplemental Executive Retirement Plan (the "SERP") to
provide supplemental retirement and survivor benefits for certain key employees
who complete a specified period of service and otherwise become eligible under
the SERP. In 1996, no amounts were deposited in the rabbi trust account to fund
the SERP. In 1995, $2.8 million was funded for the SERP.
 
     The Company provides retirement and death benefits to certain employees
through an Executive Security Plan (the "Security Plan"). The Company does not
fund the Security Plan, and no amount was funded for the Security Plan in 1996
and 1995. No new employees have been added to this plan, and it is not expected
that any additional employees will participate in the Security Plan.
 
     Net pension expense consists of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                          YEARS ENDED DECEMBER 31,
                                                        -----------------------------
                                                         1996       1995       1994
                                                        -------    -------    -------
<S>                                                     <C>        <C>        <C>
Service cost..........................................  $ 2,575    $ 2,050    $ 1,792
Interest cost.........................................    2,170      1,850      1,503
Actual return on plan assets..........................   (1,457)    (2,704)       462
Net amortization and deferral.........................      288      1,929     (1,410)
                                                        -------    -------    -------
Net pension expense...................................  $ 3,576    $ 3,125    $ 2,347
                                                        =======    =======    =======
</TABLE>
 
                                      F-16
<PAGE>   152
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The following table sets forth the funded status of the pension and
retirement plans at December 31 (in thousands):
 
<TABLE>
<CAPTION>
                                                                1996        1995
                                                              --------    --------
<S>                                                           <C>         <C>
Actuarial present value of benefit obligations:
  Vested benefits...........................................  $ 20,680    $ 16,888
  Non-vested benefits.......................................     9,333       8,601
                                                              --------    --------
Accumulated benefit obligation..............................  $ 30,013    $ 25,489
                                                              ========    ========
Projected benefit obligation................................  $ 34,839    $ 29,425
Plan assets at fair value...................................   (21,316)    (19,143)
                                                              --------    --------
Excess of projected benefit obligations over plan assets....    13,523      10,282
Unrecognized net loss.......................................    (3,487)     (1,816)
Unrecognized prior service cost.............................    (4,259)     (4,824)
Additional liability........................................     2,299       3,088
                                                              --------    --------
Pension liabilities included in other noncurrent
  liabilities...............................................  $  8,076    $  6,730
                                                              ========    ========
</TABLE>
 
     At December 31, 1996 and 1995, in determining the present value of benefit
obligations, a discount rate of 7.75% and 7.25% was used, respectively. The
assumption for the increase in future compensation levels was 4.5% at December
31, 1996 and 1995. At December 31, 1995 and 1994, the expected long-term rate of
return on assets used in determining future service costs was 9%.
 
POSTEMPLOYMENT BENEFITS
 
     The Company's obligation for postemployment benefits at December 31, 1996
and 1995 approximated $.3 million and $.9 million, respectively, and is included
in other noncurrent liabilities.
 
POSTRETIREMENT BENEFITS OTHER THAN PENSIONS
 
     The Company sponsors postretirement benefits other than the Pension Plans,
such as health care and medical benefits. The Company reimburses retirees for
these benefits but does not provide any additional funding for the
postretirement benefits.
 
     Net postretirement benefit expense consists of the following (in
thousands):
 
<TABLE>
<CAPTION>
                                                              YEARS ENDED DECEMBER 31,
                                                             --------------------------
                                                              1996      1995      1994
                                                             ------    ------    ------
<S>                                                          <C>       <C>       <C>
Service cost...............................................   $ 396     $ 374     $ 394
Interest cost..............................................     790       766       682
Net amortization and deferral..............................    (346)     (339)     (284)
                                                              -----     -----     -----
Net postretirement benefit expense.........................   $ 840     $ 801     $ 792
                                                              =====     =====     =====
</TABLE>
 
                                      F-17
<PAGE>   153
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The following table sets forth the funded status of the postretirement
benefits at December 31 (in thousands):
 
<TABLE>
<CAPTION>
                                                               1996       1995
                                                              -------    -------
<S>                                                           <C>        <C>
Actuarial present value of benefit obligations:
  Active participants eligible for retirement...............  $ 4,058    $ 3,583
  Active participants not yet eligible for retirement.......    5,353      3,553
  Retired participants......................................    2,857      2,906
                                                              -------    -------
Accumulated postretirement benefit obligation...............   12,268     10,042
Plan assets at fair value...................................       --         --
                                                              -------    -------
Excess of benefit obligation over plan assets...............   12,268     10,042
Unrecognized prior service cost.............................     (113)       760
Unrecognized net gain.......................................    4,224      5,039
                                                              -------    -------
Postretirement benefits included in other noncurrent
  liabilities...............................................  $16,379    $15,841
                                                              =======    =======
</TABLE>
 
     In 1996 and 1995, in determining the value of postretirement benefit
obligations, a discount rate of 7.75% and 7.25%, respectively, was used, and in
1996 the health care trend rate used to measure the expected increase in cost of
benefits was assumed to be 9.0% in 1997, and descending to 5.5% in 2003 and
thereafter. A one percentage-point increase in the assumed health care cost
trend rate for each year would increase the accumulated postretirement benefit
obligation as of December 31, 1996 by approximately $422,000 and would increase
the service and interest cost components of the net postretirement benefit cost
for the year ended December 31, 1996 by approximately $41,000.
 
EMPLOYEE STOCK OPTION PLANS
 
     In 1988, the Company adopted a stock incentive plan (the "Stock Incentive
Plan") providing for the granting of 87,500 stock options for, stock
appreciation rights in, and the sale of restricted shares of, common stock for
certain employees. In 1993, the Company adopted a stock option plan (the
"Employee Plan") providing for the granting of 700,000 stock options for common
stock to key employees of the Company. In 1994, the Company adopted a long-term
incentive plan (the "Incentive Plan") providing for the granting of 882,000
stock options for common stock to key employees of the Company. The Incentive
Plan is intended to replace the Stock Incentive Plan and the Employee Plan. The
Company has granted non-qualified stock options under the Stock Incentive Plan,
the Incentive Plan and the Employee Plan. In August, 1996 the Company granted
489,500 stock options to employees under the Incentive Plan.
 
                                      F-18
<PAGE>   154
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The exercise price of stock options is based on the average trading price
of the stock for twenty days prior to the grant date. Changes in stock options
during the years indicated are as follows:
 
<TABLE>
<CAPTION>
                                          OPTIONS        PRICE RANGE       WEIGHTED AVERAGE
                                        OUTSTANDING       PER SHARE         EXERCISE PRICE
                                        -----------    ----------------    ----------------
<S>                                     <C>            <C>                 <C>
Balance at December 31, 1993..........     220,300     $ 3.43 -- 304.00        $ 15.50
  Granted.............................     498,000       3.71 --  14.63           9.22
  Exercised...........................      (4,496)                3.43           3.43
  Canceled............................      (8,175)              304.00         304.00
                                         ---------
Balance at December 31, 1994..........     705,629       3.43 --  95.20           7.81
  Exercised...........................     (16,157)      3.43 --   3.71           3.55
  Canceled............................      (9,561)      3.43 --  95.20          80.04
                                         ---------
Balance at December 31, 1995..........     679,911       3.43 --  14.63           6.89
  Granted.............................     489,500                10.79          10.79
  Exercised...........................     (29,168)      3.43 --   3.71           3.57
  Canceled............................     (28,566)      3.43 --  14.63          12.07
                                         ---------
Balance at December 31, 1996..........   1,111,677       3.43 --  14.63           9.02
                                         =========
</TABLE>
 
     At December 31, 1996, 392,500 options are available for grant under the
Incentive Plan. The following table summarizes information about options
outstanding at December 31, 1996:
 
<TABLE>
<CAPTION>
                                    OPTIONS OUTSTANDING                      OPTIONS EXERCISABLE
                       ---------------------------------------------    -----------------------------
                                        WEIGHTED
                         NUMBER         AVERAGE          WEIGHTED         NUMBER          WEIGHTED
      RANGE OF         OUTSTANDING     REMAINING         AVERAGE        EXERCISABLE       AVERAGE
   EXERCISE PRICES     AT 12/31/96    LIFE (YEARS)    EXERCISE PRICE    AT 12/31/96    EXERCISE PRICE
   ---------------     -----------    ------------    --------------    -----------    --------------
<S>                    <C>            <C>             <C>               <C>            <C>
$ 3.43 to $ 3.71.....     393,674         6.82            $ 3.58          318,501          $ 3.55
$10.00 to $14.63.....     718,003         8.97             11.99          153,324           14.54
                        ---------                                         -------
                        1,111,677         8.21              9.02          471,825            7.12
                        =========                                         =======
</TABLE>
 
                                      F-19
<PAGE>   155
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
OUTSIDE DIRECTOR STOCK OPTION PLANS
 
     In 1993, the Company adopted a non-qualified stock option plan for outside
directors providing for the granting of 225,000 stock options for common stock.
In 1995, the Company adopted a non-qualified stock option plan for outside
directors providing for the granting of 60,000 stock options for common stock.
The exercise price of stock options is less than the market value of the
Company's stock on the date of grant. Accordingly, compensation expense is
recognized by the Company with respect to such grants. Changes in stock options
during the years indicated are as follows:
 
<TABLE>
<CAPTION>
                                              OPTIONS      PRICE RANGE     WEIGHTED AVERAGE
                                            OUTSTANDING     PER SHARE       EXERCISE PRICE
                                            -----------    ------------    ----------------
<S>                                         <C>           <C>              <C>
Balance at December 31, 1993..............    104,167     $        0.63         $0.63
  Granted.................................    104,167              0.43          0.43
  Exercised...............................    (14,583)             0.63          0.63
  Canceled................................    (18,750)     0.43 -- 0.63          0.50
                                             --------
Balance at December 31, 1994..............    175,001      0.43 -- 0.63          0.53
  Granted.................................     14,500              2.09          2.09
  Exercised...............................   (104,167)     0.43 -- 0.63          0.55
                                             --------
Balance at December 31, 1995..............     85,334     $0.43 -- 2.09         $0.76
  Granted.................................     14,000              3.22          3.22
  Exercised...............................    (33,584)     0.43 -- 2.09          0.75
                                             --------
Balance at December 31, 1996..............     65,750      0.43 -- 3.22          1.28
                                             ========
</TABLE>
 
     At December 31, 1996, 51,750 options are exercisable, and 31,500 options
are available for grant.
 
     As permitted by SFAS No. 123, the Company elected to continue to use
Accounting Principles Board Opinion No. 25, "Accounting for Stock Issued to
Employees" and related interpretations in accounting for its stock option
incentive plans. If the Company had elected to recognize compensation cost based
on the fair value of the options granted at grant date and the vesting
provisions under the plans in accordance with SFAS No. 123, net income in 1996
would have been reduced by approximately $118,000, or $.01 per share. Earnings
per share for 1995 would not have changed. The average fair value of each option
granted during 1996 under the Incentive Plan is estimated at $8.48 on the date
of grant using the Noreen-Wolfson option pricing model with the following
assumptions: (i) volatility of 46.9%, (ii) risk free interest rates of 6.95%,
(iii) expected life of ten years with no defaults; and (iv) the Company's
present dividend yield rate. The effects of applying SFAS No. 123 in this pro
forma disclosure are not necessarily indicative of future amounts as SFAS No.
123 does not apply to awards prior to 1995 and additional awards are anticipated
in future years.
 
STOCK OPTION FOR FORMER OFFICER
 
     In 1994, a stock option to purchase 105,031 shares of common stock at an
aggregate exercise price of $901,120 was exercised.
 
STOCK BONUS PLAN
 
     In 1985, the Company established an employee stock bonus plan (the "Stock
Bonus Plan") for the benefit of its employees. Contributions were made at the
discretion of the Company. Effective January 1, 1992, all participants (as
defined) became 100% vested, and participation in the Stock Bonus Plan was
frozen. In May 1996, the Company terminated the Stock Bonus Plan and distributed
all the funds.
 
                                      F-20
<PAGE>   156
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
16. COMMON STOCK PURCHASE RIGHTS
 
     In 1993, the Company declared a dividend distribution of one Common Stock
Purchase Right (a "Right") for each outstanding share of common stock. The
Rights are exercisable only if a person or group acquires 15% or more of common
stock or announces a tender offer, the consummation of which would result in
ownership by a person or group of 15% or more of the common stock. Each Right
entitles stockholders to purchase such number of shares of common stock at an
exercise price of $60.00 (as amended) as determined under formulas set out in
the agreement providing for the Rights. The existence of the Rights may, under
certain circumstances, render more difficult or discourage attempts to acquire
the Company.
 
     The Company can terminate the Rights at no cost any time prior to the
acquisition of a 15% position. The termination period can be extended by the
Board of Directors. The rights expire February 8, 2003.
 
17. RELATED PARTY TRANSACTIONS
 
     Pursuant to a letter agreement between the Company and its Chairman of the
Board, Arthur L. Goeschel, the Company agreed to pay Mr. Goeschel, in addition
to his normal director fees, a sum of $2,750 per day plus expenses for each day
over five days per quarter that he spends on Company matters. Under this letter
agreement, the Company paid Mr. Goeschel approximately $50,000 in additional
fees for the year ended December 31, 1994. No amount of additional fees were
paid in 1996 or 1995.
 
     Mr. Kevin Clowe, a former director of the Company in 1994, is a corporate
officer of The American International Group, Inc. ("AIG") which provides various
types of insurance for the Company. During 1994, the Company paid approximately
$3.1 million in premiums and fees to subsidiaries of AIG in the ordinary course
of business.
 
     Mr. Ilan Kaufthal, a director of the Company, is a managing director of
Schroder Wertheim & Co. Incorporated ("Schroder"). In connection with the
Recapitalization in 1994, the Company paid Schroder underwriter fees of
approximately $2.9 million. During 1996, the Company paid Schroder $0.6 million
for services in connection with an unsolicited offer to purchase the Company.
 
18. CONTINGENCIES
 
ENVIRONMENTAL REGULATION
 
     The Company, and the industry in which it competes, is subject to extensive
environmental laws and regulations concerning, for example, emissions to the
air, discharges to surface and subsurface waters and the generation, handling,
storage, transportation, treatment and disposal of waste and other materials.
The Company believes that, in light of its historical expenditures and expected
future results of operations, it will have adequate resources to conduct its
operations in compliance with currently applicable environmental and health and
safety laws and regulations. However, in order to comply with changing facility
permitting and regulatory standards, the Company may be required to make
additional significant site or operational modifications that are not currently
contemplated. Further, the Company has incurred and may in the future incur
liability to investigate and clean up waste or contamination at its current or
former facilities, or which it may have disposed of at facilities operated by
third parties. On the basis of reasonable investigation and analysis, management
believes that the approximately $18.4 million accrued in the December 31, 1996
balance sheet is adequate for the total potential environmental liability of the
Company with respect to contaminated sites. Extensive environmental
investigation of the groundwater, soils and solid waste management has been
conducted at the Odessa Facility. Risk assessments have been completed for a
number of these facilities and corrective measures have been defined and
conducted. Approval of these waste management unit closures requires a public
notice period that expires at the end of February 1997. The Company has received
approval to allow closure of five solid waste management units, which will
permit a reduction in the accrual for potential environmental liability of
approximately $9.0 million. The Company continually reviews its estimates
 
                                      F-21
<PAGE>   157
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
of potential environmental liabilities. However, no assurance can be given that
all potential liabilities arising out of the Company's present or past
operations have been identified or fully assessed or that the amounts that might
be required to remediate such conditions will not be significant to the Company.
The Company's operating expenditures for environmental remediation, compliance
and waste disposal were approximately $7.6 million, $8.3 million and $6.6
million in 1996, 1995 and 1994, respectively.
 
     The Company currently disposes of wastewater from the Odessa Facility
through injection wells operated under permits from the Texas Natural Resource
Conservation Commission ("TNRCC"). TNRCC has stated that it does not intend to
renew the permits after they expire in December 1997. The Company has entered
into an agreement with the City of Odessa and the Gulf Coast Waste Disposal
Authority pursuant to which the latter will acquire, modify and operate a
publicly-owned treatment works ("POTW") to dispose of the Company's and a
portion of the City of Odessa's wastewater. Construction to modify the existing
municipal facility is in progress with a view to having the POTW operational by
September 1997. Although no assurances can be given, the Company believes that
it will be able to use its existing wells until it develops this alternative
wastewater disposal system. However, if the Company is forced to cease using its
injection wells before the POTW is operational, such loss of capacity could have
a material adverse effect on the Company's financial condition, results of
operations or cash flows.
 
SHAREHOLDER LITIGATION
 
     On July 23, 1996, the Company was served with a purported stockholder class
action lawsuit filed in the Chancery Court of the State of Delaware, in and for
New Castle County, arising from the Company's rejection of the unsolicited offer
from Huntsman Corporation ("Huntsman") to purchase the outstanding shares of
common stock of the Company. The lawsuit names the Company and each of its
directors as defendants. The complaint alleges that the defendant directors
breached their fiduciary duty to stockholders by refusing to attempt in good
faith to maximize stockholder value in the sale of the Company and engaging in a
plan to thwart and reject offers from third parties including Huntsman in order
to entrench management. Plaintiff seeks certification of the lawsuit as a class
action, an order requiring defendants to take various actions including exposing
the Company to the market place in an effort to create an auction of the Company
and an unspecified amount of damages. The Company is also aware of two other
similar lawsuits that are pending in the Chancery Court. The plaintiffs' counsel
in these cases has agreed to an indefinite extension of defendants' answer date.
Under the agreement, defendants need not respond to the complaints until
notified to do so by plaintiffs' counsel.
 
PHILLIPS BLOCK COPOLYMER LITIGATION
 
     In March 1984, Phillips Petroleum Company ("Phillips") filed a lawsuit
against the Company seeking injunctive relief, an unspecified amount of
compensatory damages and treble damages. The complaint alleges that the
Company's copolymer process for polypropylene infringes Phillips' two "block"
copolymer patents, the last of which expired in 1994. This action, which was
originally filed in Illinois, was transferred to the United States District
Court for the Southern District of Texas, Houston Division. After discovery
proceedings were completed, the Company filed a motion for summary judgment.
Phillips filed a motion for partial summary judgment. Pursuant to an agreement
among the parties, the court appointed a special master who conducted a hearing
on these motions and thereafter recommended to the court that the Company's
motion be granted and Phillips' motion be denied. Thereafter, Phillips filed
motions to disqualify the special master, to reject the recommendation of the
special master and to enter partial summary judgment for Phillips. In 1993, the
court entered an order denying Phillips' motion to disqualify the special
master. On December 23, 1996, the court entered a final judgment in favor of the
Company after granting the Company's motion for summary judgment. Phillips has
filed a notice of appeal. In the Company's bankruptcy proceeding in 1992,
Phillips filed a proof of claim seeking in excess of $108 million based upon the
allegations in this
 
                                      F-22
<PAGE>   158
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
litigation. The Company objected to the claim and elected to leave the legal,
equitable and contractual rights of Phillips unaltered, thereby allowing this
litigation to proceed without regard to the bankruptcy proceeding.
 
PHILLIPS CRYSTALLINE LICENSE LITIGATION
 
     In May 1990, Phillips filed a lawsuit against the Company in the United
States District Court for the District of Delaware seeking injunctive relief, an
unspecified amount of compensatory damages, treble damages and attorneys' fees,
costs and expenses. The complaint alleged that the Company was infringing
Phillips' Patent No. 4,376,851 (the " '851 Patent") for crystalline
polypropylene. Pursuant to a License Agreement dated as of May 15, 1983, as
amended (the "License Agreement"), Phillips granted the Company a non-exclusive
license to make, use and sell crystalline polypropylene covered by the '851
Patent. The complaint alleged that effective April 21, 1990, Phillips terminated
the License Agreement because it believed that, by the terms of the License
Agreement, all conditions precedent to such termination had occurred. The
complaint further alleged that, without an effective License Agreement, the
Company's continuing use of the '851 Patent constitutes an infringing use. At
trial in October 1994, Phillips sought damages of approximately $15.5 million,
plus interest and fees, for alleged infringement for the period between April
21, 1990 and trial. On June 19, 1995, the United States District Court entered
judgment in favor of the Company and concluded that Phillips had not properly
terminated the License Agreement. Phillips appealed the court's judgment. On
March 27, 1996, the Court of Appeals for the Federal Circuit entered an order
reversing the lower court's judgment, holding that the termination notice was
sufficient and remanding the action to the lower court. The lower court must now
review Phillips' claims and other defenses asserted by the Company that were not
previously ruled on in order to enter a new judgment.
 
ODESSA RESIDENTS' TORT LITIGATION
 
     On April 15, 1994, the national and state chapters of the NAACP and
approximately 770 residents of a neighborhood approximately one mile northwest
of the Shell Oil Company ("Shell"), the Company and Dynagen, Inc. ("Dynagen")
plants in Odessa, Texas petitioned the State District Court in Odessa, Texas to
intervene in a previously existing lawsuit against Dynagen to (a) add as
additional defendants the Company, Shell and General Tire Corporation (the
parent company of Dynagen) and (b) have the litigation certified as a class
action. The plaintiffs' petition seeks an unspecified amount of money damages
for past, present and future injuries to plaintiffs' health, wrongful death,
loss of consortium and reduction in property values; the conduct and payment of
property clean up, remediation and relocation costs; payment of expenses for
medical testing and monitoring; funding of pollution and health studies;
attorney's fees; punitive damages and injunctive relief. Plaintiffs' petition
specified alleged pollution from air emissions from the three plants as a basis
for their claims. The trial court allowed the intervention and severed the
action from the original lawsuit against Dynagen. Plaintiffs have withdrawn
their motion to have the litigation certified as a class claim. In November
1994, the plaintiffs filed an amended petition which substituted the Odessa
branch of the NAACP as plaintiff in place of the national and state chapters of
the NAACP. The amended complaint also added approximately 100 additional
plaintiffs. Defendants are challenging the NAACP's standing to participate in
the lawsuit. In May 1996, the trial court announced that the lawsuit would be
tried by groups of plaintiffs and set the first group of 65 plaintiffs for trial
in May 1997. The trial court allowed plaintiffs' counsel to designate ten
plaintiffs for the first trial, and the trial court selected the remaining 55 at
random. Discovery was ongoing when in late January 1997 the parties and the
trial court agreed to a 30-day moratorium to determine if the case could be
settled and the May 1997 trial date was vacated. At mediation, the Company
agreed to a settlement with plaintiffs' counsel which still must be ratified by
the plaintiffs' group. If a settlement is not concluded, the case will be reset
for trial later in 1997. Also, late in 1996, plaintiffs' counsel filed a new
lawsuit in the State District Court in Harris County (Houston), Texas for seven
similarly situated plaintiffs. Under the terms of the tentative settlement, this
lawsuit will be settled as well.
 
                                      F-23
<PAGE>   159
 
                      REXENE CORPORATION AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     Although there can be no assurance of the final resolution of any of these
matters, the Company believes that, based upon its current knowledge of the
facts of each case, it has meritorious defenses to the various claims made and
intends to defend each suit vigorously, and the Company does not believe that
the outcome of any of these lawsuits will have a material adverse effect on the
Company's financial position, results of operations or cash flows.
 
     The Company is also a party to various lawsuits arising in the ordinary
course of business and does not believe that the outcome of any of these
lawsuits will have a material adverse effect on the Company's financial
position, results of operations or cash flows.
 
19. QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
 
     Summarized quarterly financial information for the years ended December 31,
1996 and 1995 is as follows (in thousands except per share amounts):
<TABLE>
<CAPTION>
                                                    FOR THE QUARTER ENDED
                              ------------------------------------------------------------------
                              DECEMBER 31,   SEPTEMBER 30,   JUNE 30,   MARCH 31,   DECEMBER 31,
                                  1996           1996          1996       1996          1995
                              ------------   -------------   --------   ---------   ------------
<S>                           <C>            <C>             <C>        <C>         <C>
Net sales...................    $151,156       $150,456      $146,462   $139,687      $132,145
Gross profit................      28,352         31,626        29,149     26,482        29,163
Net income..................       7,166          8,603         7,492      6,470         8,102
Weighted average shares
  outstanding...............      19,257         19,185        19,139     19,126        19,112
Net income per share........         .37            .45           .39        .34           .42
Dividends per share.........         .04            .04           .04        .04           .04
 
<CAPTION>
                                     FOR THE QUARTER ENDED
                              ------------------------------------
                              SEPTEMBER 30,   JUNE 30,   MARCH 31,
                                  1995          1995       1995
                              -------------   --------   ---------
<S>                           <C>             <C>        <C>
Net sales...................    $154,113      $159,452   $169,528
Gross profit................      40,154        52,284     55,997
Net income..................      13,960        20,532     22,849
Weighted average shares
  outstanding...............      19,143        19,125     19,104
Net income per share........         .73          1.07       1.20
Dividends per share.........          --            --         --
</TABLE>
 
20. SUBSEQUENT EVENT
 
     On March 14, 1997, the Company executed a commitment letter with a bank to
increase the borrowing availability under the Amended Credit Agreement from $150
million to $225 million through $150 million in term loans and $75 million in a
revolving credit facility. The Company anticipates consummation of the financing
during the second quarter of 1997.
 
                                      F-24
<PAGE>   160

                                      
                                UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                                      
                            Washington, D.C. 20549
                                      
                               ----------------
                                      
                                  FORM 10-Q
                                      
                               ----------------
(Mark One)

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
     EXCHANGE ACT OF 1934  For the quarterly period ended March 31, 1997 
     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: 1-9988

                               REXENE CORPORATION
             (Exact name of Registrant as Specified in its Charter)

         DELAWARE                                                 75-2104131
(State or other jurisdiction of                               (I.R.S. Employer
incorporation or organization)                               Identification No.)

         5005 LBJ FREEWAY
          DALLAS, TEXAS                                             75244
(Address of principal executive offices)                          (Zip code)

                                 (972) 450-9000
              (Registrant's telephone number, including area code)

Indicate by check mark whether the Registrant: (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 
                                              ---    ---

             APPLICABLE ONLY TO REGISTRANTS INVOLVED IN BANKRUPTCY
                  PROCEEDINGS DURING THE PRECEDING FIVE YEARS:

Indicate by check mark whether the Registrant has filed all documents and
reports required to be filed by Section 12, 13 or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan
confirmed by a court.
 Yes  X   No
     ---     ---

At April 23, 1997, 18,843,453 shares of common stock, par value $0.01 per
share, of Rexene Corporation were outstanding.
<PAGE>   161
                      REXENE CORPORATION AND SUBSIDIARIES



<TABLE>
<CAPTION>
                                                                                                                     Page
                                                                                                                     ----
<S>                                                                                                                    <C>

PART I -- FINANCIAL INFORMATION

Item 1.  Financial Statements (unaudited)

         Condensed Consolidated Statements of Income for the Three Months
                Ended March 31, 1997 and 1996 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

         Condensed Consolidated Balance Sheets as of March 31, 1997 and December 31, 1996 . . . . . . . . . . . . . . . 2

         Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 1997 and 1996 . . . . . . 3

         Notes to Condensed Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Item 2.  Management's Discussion and Analysis of Financial Condition and Results of Operations  . . . . . . . . . . . . 6

PART II -- OTHER INFORMATION

Item 1.  Legal Proceedings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10

Item 5.  Other Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11

Item 6.  Exhibits and Reports on Form 8-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
</TABLE>
<PAGE>   162
PART I -- FINANCIAL INFORMATION

ITEM 1.   FINANCIAL STATEMENTS.



                      REXENE CORPORATION AND SUBSIDIARIES
                  CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                    (In thousands, except per share amounts)
                                  (Unaudited)

<TABLE>
<CAPTION>
                                                                                         Three Months Ended
                                                                                              March 31,
                                                                                          1997          1996  
                                                                                        --------      --------
<S>                                                                                    <C>           <C>
Net sales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       $163,716      $139,687

Operating expenses:
  Cost of sales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        144,423       113,205
  Marketing, general and administrative . . . . . . . . . . . . . . . . . . . . .         10,156        10,414
  Research and development  . . . . . . . . . . . . . . . . . . . . . . . . . . .          1,957         2,040
  Reversal of environmental accrual . . . . . . . . . . . . . . . . . . . . . . .         (9,000)        --       
                                                                                        --------      --------
                                                                                         147,536       125,659
                                                                                        --------      --------
Operating income  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         16,180        14,028
                                                                                        --------      --------
Interest expense  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         (5,464)       (4,367)
Interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .            281           769
Other, net  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .         (1,135)          (26)
                                                                                        --------      --------
Income before income taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . .          9,862        10,404

Income tax expense  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          3,748         3,934
                                                                                        --------      --------
Net income  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       $  6,114      $  6,470
                                                                                        ========      ========

Weighted average shares outstanding . . . . . . . . . . . . . . . . . . . . . . .         19,272        19,126
                                                                                        ========      ========
Net income per share  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       $   0.32      $   0.34
                                                                                        ========      ========
</TABLE>





           See notes to condensed consolidated financial statements.





                                       1
<PAGE>   163
                     REXENE CORPORATION AND SUBSIDIARIES
                    CONDENSED CONSOLIDATED BALANCE SHEETS
                                (In thousands)
                                 (Unaudited)
<TABLE>
<CAPTION>
                                                                                      March 31,     December 31,
                                                                                        1997            1996        
                                                                                     --------         --------
<S>                                                                                  <C>            <C>
                                  ASSETS

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . .    $ 19,671         $    714
Accounts receivable, net  . . . . . . . . . . . . . . . . . . . . . . . . . . . .      85,327           85,340
Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      76,083           81,026
Deferred income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2,912            2,816
Prepaid expenses and other  . . . . . . . . . . . . . . . . . . . . . . . . . . .       2,477              301
                                                                                     --------         --------
  Total current assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     186,470          170,197

Property, plant and equipment, net  . . . . . . . . . . . . . . . . . . . . . . .     397,213          383,700
Intangible assets, net  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      14,970           15,570
Other noncurrent assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      27,162           28,075
                                                                                     --------         --------
                                                                                     $625,815         $597,542
                                                                                     ========         ========
                       LIABILITIES AND STOCKHOLDERS' EQUITY

Accounts payable  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    $ 33,974         $ 55,030
Accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      13,431           13,772
Accrued interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       7,117            1,889
Income taxes payable  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       1,663              594
Employee benefits payable . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2,846            6,823
                                                                                     --------         --------
  Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . .      59,031           78,108

Long-term debt  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     283,000          235,000
Other noncurrent liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . .      52,680           62,459
Deferred income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      57,685           52,924
Commitments and contingencies . . . . . . . . . . . . . . . . . . . . . . . . . .       --               --

Stockholders' equity:
  Preferred stock, par value $.01 per share; 1 million shares authorized; none 
    issued and outstanding  . . . . . . . . . . . . . . . . . . . . . . . . . . .       --               --
  Common stock, par value $.01 per share; 100 million shares authorized;
    18.8 and 18.8 million shares issued and outstanding, respectively . . . . . .         188              188
  Paid-in capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     111,605          111,553
  Retained earnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      60,681           55,320
  Less common shares held in treasury, at cost  . . . . . . . . . . . . . . . . .        (159)             -
  Foreign currency translation adjustment . . . . . . . . . . . . . . . . . . . .       1,104            1,990
                                                                                     --------         --------
  Total stockholders' equity  . . . . . . . . . . . . . . . . . . . . . . . . . .     173,419          169,051
                                                                                     --------         --------

                                                                                     $625,815         $597,542
                                                                                     ========         ========
</TABLE>

           See notes to condensed consolidated financial statements.





                                       2
<PAGE>   164
                     REXENE CORPORATION AND SUBSIDIARIES
               CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                (In thousands)
                                 (Unaudited)
<TABLE>
<CAPTION>
                                                                                      Three Months Ended
                                                                                           March 31,
                                                                                      1997             1996   
                                                                                   ---------         --------
<S>                                                                                <C>              <C>
Cash flows from operating activities:
Net income  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $   6,114         $  6,470
                                                                                   ---------         -------- 
Adjustments to reconcile net income to net cash provided by (used for) operating
  activities:
  Depreciation and amortization . . . . . . . . . . . . . . . . . . . . . . . . .      7,205            5,682
  Deferred income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      4,665               (7)
  Amortization of debt issuance costs . . . . . . . . . . . . . . . . . . . . . .        430              250
  Change in:
    Accounts receivable . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       (109)          (1,922)
    Inventories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      4,870           (2,641)
    Prepaid expenses and other  . . . . . . . . . . . . . . . . . . . . . . . . .     (2,174)             218
    Income taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      1,069          (26,188)
    Accounts payable  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    (21,018)            (296)
    Accrued interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      5,228            5,140
    Employee benefits payable and accrued liabilities . . . . . . . . . . . . . .     (4,316)          (3,343)
    Other noncurrent liabilities  . . . . . . . . . . . . . . . . . . . . . . . .     (8,879)             601
  Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        931              307
                                                                                   ---------         -------- 
  Total adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    (12,098)         (22,199)
                                                                                   ---------         -------- 
Net cash used for operating activities  . . . . . . . . . . . . . . . . . . . . .     (5,984)         (15,729)
                                                                                   ---------         -------- 
Cash flows from investing activities:
  Capital expenditures  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    (21,156)         (17,386)
  Purchase of intangible assets . . . . . . . . . . . . . . . . . . . . . . . . .      --                (833)
                                                                                   ---------         -------- 
Net cash used for investing activities  . . . . . . . . . . . . . . . . . . . . .    (21,156)         (18,219)
                                                                                   ---------         -------- 

Cash flows from financing activities:
  Bank borrowings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     48,000             --
  Debt issuance costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       (144)            --
  Repayment of advance payment from customer  . . . . . . . . . . . . . . . . . .       (900)            (900)
  Cash dividends paid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       (752)            (750)
  Repurchase of common stock  . . . . . . . . . . . . . . . . . . . . . . . . . .       (159)            --
  Proceeds from issuance of common stock, net . . . . . . . . . . . . . . . . . .         52               73
                                                                                   ---------         -------- 

Net cash provided by (used for)  financing activities . . . . . . . . . . . . . .     46,097           (1,577)
                                                                                   ---------         -------- 

Net increase (decrease) in cash and cash equivalents  . . . . . . . . . . . . . .     18,957          (35,525)
Cash and cash equivalents at beginning of quarter . . . . . . . . . . . . . . . .        714           47,258
                                                                                   ---------         -------- 

Cash and cash equivalents at end of quarter . . . . . . . . . . . . . . . . . . .  $  19,671         $ 11,733
                                                                                   =========         ======== 

Supplemental cash flow information:
  Cash paid for interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $   1,448         $     75
                                                                                                              
  Cash paid for income taxes  . . . . . . . . . . . . . . . . . . . . . . . . . .  $     257         $ 30,310
                                                                                                              
</TABLE>

           See notes to condensed consolidated financial statements.





                                       3
<PAGE>   165
                      REXENE CORPORATION AND SUBSIDIARIES
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (Unaudited)

1.      GENERAL

Rexene Corporation manufactures and markets a wide variety of products through
two operating divisions, Rexene Products Company division ("Rexene Products")
and Consolidated  Thermoplastics Company division ("CT Film").  The products
range from value added specialty products, such as customized plastic films, to
commodity petrochemicals, such as styrene.  These products are used in a wide
variety of industrial and consumer-related applications.  The Company's
principal products are plastic film, polyethylene, polypropylene, Rextac(R)
amorphous polyalphaolefin ("Rextac"), REXflex (R) FPO and styrene.  Rexene
Corporation and its subsidiaries are hereinafter sometimes collectively or
separately referred to as the "Company."

The accompanying condensed consolidated financial statements are unaudited;
however, in management's opinion, all adjustments, consisting only of normal
recurring adjustments necessary for a fair presentation of the results of
operations, financial position and cash flows for the periods shown, have been
made.  Results for interim periods are not necessarily indicative of those to
be expected for the full year.  The interim condensed consolidated financial
statements should be read in conjunction with the Consolidated Financial
Statements and Notes thereto included in the 1996 Annual Report on Form  10-K.

2.      NEW ACCOUNTING STANDARDS

In February 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards ("SFAS") No. 128, "Earnings Per Share", which
establishes new standards for computing and presenting earnings per share.
SFAS No. 128 is effective for the periods ending after December 15, 1997 and
requires upon adoption restatement of all prior-period earnings per share 
amounts presented.  If the Company had computed net earnings per share in
accordance with the provisions of SFAS No. 128, the basic and diluted earnings
per share for the three months ended March 31, 1997 and 1996 would have been no
different from the reported primary and fully diluted earnings per share.

3.      INCOME TAXES

<TABLE>
<CAPTION>
Income tax expense consists of the following (in thousands):                          Three Months Ended March 31,
                                                                                         1997            1996  
                                                                                       -------         --------
<S>                                                                                    <C>             <C>
Current:
  Federal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      ($1,153)         $3,420
  State   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          236             521
Deferred  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        4,665              (7)
                                                                                       -------          ------

                                                                                       $ 3,748          $3,934
                                                                                       =======          ======
</TABLE>
4.       INVENTORIES

<TABLE>
<CAPTION>
Inventories consist of the following (in thousands):                                 March 31,        December
                                                                                       1997           31, 1996 
                                                                                      -------         --------
<S>                                                                                    <C>             <C>
Raw materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     $28,916          $30,145
Work in progress  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       8,372            8,561
Finished goods  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      38,795           42,320
                                                                                      -------         --------

                                                                                      $76,083          $81,026
                                                                                      ========         =======
</TABLE>





                                       4
<PAGE>   166

5.       PROPERTY, PLANT AND EQUIPMENT

The cost and accumulated depreciation of property, plant and equipment are as
follows (in thousands):

<TABLE>
<CAPTION>
                                                                                    March 31,      December 31,
                                                                                       1997            1996 
                                                                                    ----------      ----------
<S>                                                                                <C>               <C>
Property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . . . .   $ 481,696        $ 461,469
Less accumulated depreciation . . . . . . . . . . . . . . . . . . . . . . . . . .     (84,483)         (77,769)
                                                                                    ---------        --------- 
                                                                                    $ 397,213        $ 383,700
                                                                                    =========        =========
</TABLE>

6.       INTANGIBLE ASSETS

The cost and accumulated amortization of intangible assets are as follows (in
thousands):

<TABLE>
<CAPTION>
                                                                                       March 31,     December 31,
                                                                                         1997           1996 
                                                                                       -------        --------
<S>                                                                                    <C>             <C>
Debt issuance costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      $14,406         $14,333
Less accumulated amortization . . . . . . . . . . . . . . . . . . . . . . . . . .       (4,649)         (4,288)
                                                                                       -------         ------- 

                                                                                         9,757          10,045
                                                                                       -------         ------- 

Reorganization value in excess of amounts allocable to identifiable assets  . . .        4,298           4,298
Less accumulated amortization . . . . . . . . . . . . . . . . . . . . . . . . . .       (1,504)         (1,437)
                                                                                       -------         ------- 

                                                                                         2,794           2,861
                                                                                       -------         ------- 

Other intangible assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        7,409           7,377
Less accumulated amortization . . . . . . . . . . . . . . . . . . . . . . . . . .       (4,990)         (4,713)
                                                                                       -------         ------- 

                                                                                         2,419           2,664
                                                                                       -------         ------- 

                                                                                       $14,970         $15,570
                                                                                       =======         =======
</TABLE>
7.      CONTINGENCIES

The Company, and the industry in which it competes, is subject to extensive
environmental laws and regulations concerning, for example, emissions to the
air, discharges to surface and subsurface waters and the generation, handling,
storage, transportation, treatment and disposal of waste and other materials.
The Company believes that, in light of its historical expenditures, it will
have adequate resources to conduct its operations in compliance with currently
applicable environmental and health and safety laws and regulations.  However,
in order to comply with changing facility permitting and regulatory standards,
the Company may be required to make additional significant site or operational
modifications.  Further, the Company has incurred and may in the future incur
liability to investigate and clean up waste or contamination at its current or
former facilities, or which it may have disposed of at facilities operated by
third parties.  On the basis of its investigation and analysis, management
believes that the approximately $9.3 million accrued in the March 31, 1997
balance sheet is adequate for the total potential environmental liability with
respect to contaminated sites. Extensive environmental investigation of the
groundwater, soils and solid waste management has been conducted at the Odessa
facility.  Risk assessments have been completed for a number of these
facilities and corrective measures have been defined and conducted.  Approval
of these waste management unit closures required a public notice period that
expired at the end of February 1997.  The Company received approval to allow
closure of five solid waste management units, which permitted a reduction in
the accrual for potential environmental liability of $9.0 million. The Company
currently disposes of wastewater from the Odessa Facility through injection
wells operated under permits from the Texas Natural Resources Conservation
Commission ("TNRCC").  TNRCC has stated that it does not intend to renew the
permits after they expire in December 1997.  The Company has entered into an
agreement with the City of Odessa and the Gulf Coast Waste Disposal Authority
pursuant to which that latter will acquire, modify and operate a publicly-owned
treatment works ("POTW") to dispose of the Company's and a portion of the City
of Odessa's wastewater.  Construction to modify the existing municipal facility
is in progress with a view to having the POTW operational by September 1997.
Although no assurances can be given, the Company believes  that it will be able
to use its existing wells until it develops this alternative wastewater disposal
system.  However, if the Company is forced to cease using its injection wells
before the POTW is operational, such loss of capacity could have a material
adverse effect on the Company's financial condition, results of operations or
cash flows. The Company continually reviews its estimates of potential
environmental liabilities. However, no assurance can be given that all potential
liabilities arising out of the Company's present or past operations have been
identified or fully assessed or that the amounts that might be required to
investigate and remediate such sites will not be significant to the Company.





                                       5
<PAGE>   167
The Company is a party to various litigation arising in the ordinary course of
business and to certain other litigation which are set forth in Note 18 to the
Consolidated Financial Statements included in the Company's 1996 Annual Report
on Form 10-K.  There have been no material changes to the litigation described
in the aforementioned Note 18, except as described in Part II below.

Although there can be no assurance of the final resolution of such litigation,
the Company believes that, based upon its current knowledge of the facts of
each case, it  has meritorious defenses to the various claims made and intends
to defend each lawsuit vigorously, and the Company does not believe that the
outcome of any of these lawsuits will have a material adverse effect on the
Company's financial position, results of operations or cash flows.


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

OVERVIEW

The Company conducts its business through two operating divisions: the Rexene
Products division, which manufactures and sells polyethylene, polypropylene,
REXtac(R) APAO, REXflex(R) FPO and styrene, and the CT Film division, which
manufactures and sells plastic film.  The polyethylene, polypropylene and
styrene markets in which the Company competes are cyclical markets that are
sensitive to relative changes in supply and demand as well as general economic
conditions.  Historically, these products have experienced alternating periods
of tight supply, rising prices and increased profits followed by periods of
large capacity additions resulting in oversupply, lower selling prices and
lower gross profits.  The Company's plastic film and REXtac APAO businesses are
generally less sensitive to economic cycles.

Principal raw materials purchased by the Company consist of ethane and propane
extracted from natural gas liquids ("NGL"), propylene and benzene (all four of
which are referred to as "feedstocks") for the polymer and styrene businesses
and polyethylene resins for the film business.  The feedstock supplies
available in Odessa, Texas are currently adequate for the Company's
requirements.  The percentage of feedstock costs compared to the Company's total
cost of sales decreased from 30% in 1996 to 28% for the first quarter of 1997.
The Company's inability in 1996 and the first quarter of 1997, to pass on the
full amount of the increases in feedstock costs to customers had a significant
impact on operating results.  Lower industry inventory levels of crude oil,
natural gas and NGL feedstocks and unexpected supply disruptions caused
feedstock prices to increase during 1996 and early 1997.  Ethane and propane
prices decreased midway in the first quarter of 1997 to levels comparable to the
first quarter of 1996.

RESULTS OF OPERATIONS FOR THE THREE MONTHS ENDED MARCH 31, 1997 COMPARED TO THE
THREE MONTHS ENDED MARCH 31, 1996

The Company's overall sales were higher in the first quarter of 1997 as
compared to the first quarter of 1996.   Net sales increased $24.0 million (or
17%) from the first quarter of 1996 to the first quarter of 1997 principally
due to higher average sales prices in all product lines partially offset by
lower polyethylene and styrene sales volumes.  Polyethylene sales increased
$6.5 million (or 17%) principally due to an increase in average sales prices of
9 cents per pound, partially offset by a decrease in sales volumes of 4.4
million pounds.  Plastic film sales increased $4.3 million (or 12%) principally
due to an increase in average sales prices of 3 cents per pound and an increase
in sales volumes of 2.8 million pounds.  Polypropylene sales increased $1.0
million (or 4%) principally due to an increase in average sales prices of 1
cent per pound and an increase in sales volumes of 1.0 million pounds.  REXtac
APAO sales increased $0.9 million (or 17%) principally due to an increase in
sales volumes of 2.1 million pounds.  Styrene sales for the first quarter of
1997 were consistent with the first quarter of 1996.  Other sales increased
$11.6 million principally due to an increase in excess feedstock sales.

The Company's gross profit percentage decreased from 19% for the three months
ended March 31, 1996 to 12% for the three months ended March 31, 1997
principally due to significantly higher feedstock costs during the period
November 1996 to January 1997, a substantial portion of which was charged to
cost of sales in the first quarter of 1997. The effect of higher feedstock
costs were partially offset by higher polyethylene sales prices.  Marketing,





                                       6
<PAGE>   168
general and administrative expenses and research and development expenses
decreased $0.3 million from the first quarter of 1996 to the first quarter of
1997 principally due to reimbursements of legal fees offset by a severance
accrual for approximately $0.3 million.  An environmental accrual established
in prior years was reduced by $9.0 million as a result of modifications to the
Company's remedial action plans at the Odessa facility that were approved by
the TNRCC.

Due primarily to the factors discussed above, operating income increased $2.2
million (or 15%) for the three months ended March 31, 1997 as compared to the
corresponding period in 1996.

Net interest expense increased $1.6 million (or 44%) from the first  quarter of
1996 to the first quarter of 1997 principally due to increased bank borrowings
in the first quarter of 1997.

Other, net increased $1.1 million from the first quarter of 1996 to the first
quarter of 1997 principally due to costs of $1.2 million related to proxy
solicitation expenses.

Income tax expense decreased $0.2 million (or 5%) from the first quarter of
1996 to the first quarter of 1997 principally due to the increase in interest
expense discussed above.

Due primarily to the factors discussed above, the Company's net income
decreased $0.4 million (or 6%) from the first quarter of 1996 to the first
quarter of 1997.

LIQUIDITY AND CAPITAL RESOURCES

For the three  months ended March 31, 1997, net cash provided by operating
activities increased $9.7 million as compared to the same period in 1996.  This
increase was principally due to changes in working capital.

On April 24, 1996, the Company executed an amendment to the Credit Agreement
(the "Amended Credit Agreement").  The Amended Credit Agreement provided a new
line of credit in an initial amount of $150 million for a seven year term.  The
primary use of proceeds from the new line of credit was to provide funds to
finance portions of the Company's capital expenditure program at its Odessa,
Texas manufacturing facility.  On August 5, 1996 the Company executed an
agreement with a financial institution for a $10 million uncommitted unsecured
line of credit (the "Unsecured Note) for day to day cash flow requirements.  As
of April 23, 1997, there were no amounts outstanding under the Unsecured Note.

On March 13, 1997 the Amended Credit Agreement was further amended to, among
other things, permit the repurchase of up to $85 million of Common Stock during
a one year period and to use up to $35 million of borrowings under the Amended
Credit Agreement for such repurchases pursuant to a share repurchase program
(the "Share Repurchase Program").  On April 23, 1997 the Company signed a
commitment letter with Scotia Bank to increase the borrowing availability under
the Amended Credit Agreement from $150 million to $225 million (the "New Credit
Agreement").  The primary use of the increased available borrowings from the
New Credit Agreement will be to provide funds to repurchase approximately $35
million of the Company's Common Stock pursuant to the share repurchase program
and to finance portions of the Company's capital expenditure program at its
Odessa, Texas plant over the next two years, including the modernization and
expansion of its olefins plant and the construction of a new linear low density
polyethylene plant.

The New Credit Agreement will contain covenants which limit, among other
things, the incurrence of additional indebtedness by the Company, the creation
of liens on the Company's assets, the making of certain investments by the
Company, certain mergers, sales of certain fixed assets and the prepayment of
the Company's 11 3/4% Senior Notes due 2004 (the "Senior Notes").  As a result
of the New Credit Agreement, the Company anticipates recording a non-cash charge
of approximately $1 million to write-off certain deferred debt issuance costs.
The New Credit Agreement also will contain certain financial covenants relating
to the financial condition of the Company, including covenants relating to
minimum net worth, the ratio of its earnings to debt and interest to earnings.
As of April 23, 1997, the Company had borrowed $93 million under the Amended
Credit Agreement.





                                       7
<PAGE>   169
The Company anticipates that a second part of the share repurchase program will
be funded by the issuance of $50 million in Preferred Stock.  At a special
meeting of the Company's stockholders which has been postponed to May 22, 1997
(the "Special Meeting"), stockholders will be asked to approve the second part
of the Share Repurchase Program.

The Company believes that, based on current levels of operation and anticipated
growth, its cash flow from operations, together with other available sources of
liquidity, including the proceeds from the New Credit Agreement, will be
adequate to make scheduled payments of interest on the Senior Notes and
dividends on the Preferred Stock, to permit anticipated capital expenditures
and to fund working capital requirements.  However, the ability of the Company
to satisfy these obligations depends on a number of significant assumptions,
including but not limited to, the demand for the Company's products, raw
material costs and other factors.

The indenture governing the Senior Notes (the "Indenture") contains certain
covenants that, among other things, limit the ability of the Company to incur
additional indebtedness and to repurchase subordinated indebtedness, incur or
suffer to exist certain liens, pay dividends, make certain investments, sell
significant fixed assets and engage in mergers and consolidations.

Pursuant to Section 10.01 (k) of the Amended Credit Agreement and the proposed
New Credit Agreement, the replacement of a majority of the Company's directors,
if adopted by the stockholders of the Company at the Special Meeting, would
cause a "change of control" as defined in these credit agreements.  Pursuant to
the Amended Credit Agreement, the lenders could cancel their obligations to
make loans to the Company and/or declare the loans then outstanding under the
Credit Agreement due and payable.  The replacement of a majority of the
Company's directors, if successful, also would be a "change of control" under
the Indenture, pursuant to which the Senior Notes were issued.  Each holder of
Senior Notes would then have the right to require the Company to purchase all
or any part of such holder's Senior Notes at a price in cash equal to 101% of
the aggregate principal amount thereof plus accrued and unpaid interest thereon
to the date of purchase.

A number of potential environmental liabilities exist which relate to certain
contaminated property.  In addition, a number of potential environmental costs
relate to pending or proposed environmental regulations.  No assurance can be
given that all of the potential liabilities arising out of the Company's
present or past operations have been identified or that the amounts that might
be required to investigate and remediate such sites or comply with pending or
proposed environmental regulations can be accurately estimated.  The Company
has approximately $9.3 million accrued in the March 31, 1997 balance sheet as
an estimate of its total potential environmental liability with respect to
investigating and remediating known and assessed site contamination.  Extensive
environmental investigation of the groundwater, soils and solid waste
management has been conducted at the Odessa Facility.  Risk assessments have
been completed for a number of these facilities and corrective measures have
been defined and conducted.  Approval of certain waste management unit closures
required a public notice period that expired at the end of February 1997.  The
Company received approval to close five solid waste management units, which
permitted a reduction in the accrual for potential environmental liability by
$9.0 million.  If, however, additional liabilities with respect to environmental
contamination are identified, there is no assurance that additional amounts that
might be required to investigate and remediate such potential sites would not
have a material adverse effect on the financial position, results of operations
or cash flows of the Company.  In addition, future regulatory developments could
restrict or possibly prohibit existing methods of environmental compliance.  At
this time, the Company is unable to determine the potential consequences such
possible future regulatory developments would have on its financial condition.
Management continually reviews its estimates of potential environmental
liabilities.  The Company does not currently carry environmental impairment
liability insurance to protect it against such contingencies because the Company
has found such coverage is available only at great cost and with broad
exclusions.

The Company currently disposes of wastewater from the Odessa Facility through
injection wells operated under permits from the TNRCC.  TNRCC has stated
that it does not intend to renew the permits after they expire in December
1997.  The Company has entered into an agreement with the City of Odessa and
the Gulf Coast Waste Disposal Authority pursuant to which that latter will
acquire, modify and operate a publicly-owned treatment works





                                       8
<PAGE>   170
("POTW") to dispose of the Company's and a portion of the City of Odessa's
wastewater.  Construction to modify the existing municipal facility is in
progress with a view to having the POTW operational by September 1997.
Although no assurances can be given, the Company believes  that it will be able
to use its existing wells until it develops this alternative wastewater
disposal system.  However, if the Company is forced to cease using its
injection wells before the POTW is operational, such loss of capacity could
have a material adverse effect on the Company's financial condition, results of
operations or cash flows.

OTHER MATTERS

The Company is including the following cautionary statement in this Form 10-Q
to make applicable and take advantage of the safe harbor provisions of the
Private Securities Litigation Reform Act of 1995 for any forward-looking
statements made by, or on behalf of, the Company.  Forward-looking statements
include statements concerning plans, objectives, goals, strategies, future
events or performance, and underlying assumptions and other statements which
are other than statements of historical facts.  From time to time, the Company
may publish or otherwise make available forward-looking statements of this
nature.  All such subsequent forward-looking statements, whether written or
oral and whether made by or on behalf of the Company, are also expressly
qualified by these cautionary statements.  Certain statements contained herein
are forward-looking statements and accordingly involve risks and uncertainties
which could cause actual results or outcomes to differ materially from those
expressed in the forward-looking statements.  The forward-looking statements
contained herein are based on various assumptions, many of which are based, in
turn, upon further assumptions.  The Company's expectations, beliefs and
projections are expressed by good faith and are believed by the Company to have
a reasonable basis, including without limitation, management's examination of
historical operating trends, data contained in the Company's records and other
data available from third parties, but there can be no assurance that
management's expectations, beliefs or projections will result or be achieved or
accomplished.  In addition to the other factors and matters discussed elsewhere
herein, the following are important factors that, in the view of the Company,
could cause actual results to differ materially from those discussed in the
forward-looking statement:

1.      Changes in economic conditions and weather conditions

2.      Changes in the availability and/or price of feedstocks

3.      Changes in management ownership or control of the Company

4.      Inability to obtain new customers or retain existing ones

5.      Significant changes in competitive factors affecting the Company

6.      Governmental/regulatory actions and initiatives, including those
        affecting financings, and environmental/safety requirements

7.      Significant changes from expectations in actual capital expenditures
        and operating expenses and unanticipated project delays

8.      Occurrences affecting the Company's ability to obtain funds from
        operations, debt or equity to finance needed capital expenditures and
        other investments

9.      Regarding foreign operations - changes in foreign trade and 
        monetary policies, laws and regulations related to foreign operations,
        political and governmental changes, inflation and exchange rates, taxes
        and operating conditions

10.     Significant changes in tax rates or policies or in rates of inflation
        or interest





                                       9
<PAGE>   171
11.     Significant changes in the Company's relationship with its employees
        and the potential adverse effects if labor disputes or grievances were
        to occur

12.     Changes in accounting principles and/or the application of such
        principles to the Company.

The Company disclaims any obligation to update any forward-looking statements
to reflect events or circumstances after the date hereof.


PART II -- OTHER INFORMATION

ITEM 1.     LEGAL PROCEEDINGS

Phillips Block Copolymer Litigation

As previously reported in Item 3 of the Company's Annual Report on Form 10-K
for the year ended December 31, 1996, in March 1984, Phillips Petroleum Company
("Phillips") filed a lawsuit against the Company seeking injunctive relief, an
unspecified amount of compensatory and treble damages.  The complaint alleged
that the Company's copolymer process for polypropylene infringed Phillip's two
"block" copolymer patents, the last of which expired in 1994.  On December 23,
1996, the court entered a final judgment in favor of the Company after granting
the Company's motion for summary judgment.  Phillips has appealed and briefing
is underway.


Odessa Residents' Tort Litigation

As previously reported in Item 3 of the Company's Annual Report on Form 10-K
for the year ended December 31, 1996, on April 15, 1994, the national and state
chapters of the NAACP and approximately 770 residents of a neighborhood
approximately one mile northwest of the Shell Oil Company ("Shell"), the
Company and Dynagen, Inc. ("Dynagen") plants in Odessa, Texas petitioned the
State District Court in Odessa, Texas to intervene in a previously existing
lawsuit against Dynagen to (a) add as additional defendants the Company, Shell
and General Tire Corporation (the parent company of Dynagen) and (b) have the
litigation certified as a class action.  In late January 1997, the parties and
the trial court agreed to a 30-day moratorium to determine if the case could be
settled and the May 1997 trial date was vacated.  At mediation, the Company
agreed to a settlement, which was approved by the trial court on March 17,
1997.  As of April 23, 1997, releases have been secured from more than 810 of
the 820 plaintiffs covered by the settlement.  Forty-one plaintiffs are not
represented by counsel and the case will remain active until their claims are
dismissed or otherwise resolved.  Although the terms of the settlement are
confidential, the Company believes that the settlement will not have a material
adverse effect on the Company's financial position, results of operations or
cash flows.   Also, late in 1996, plaintiffs' counsel filed a new lawsuit in the
State District Court in Harris County (Houston), Texas for seven similarly
situated plaintiffs.  The settlement also covers this lawsuit and releases have
been obtained from each of the plaintiffs in this case.

Although there can be no assurance of the final resolution of any of these
matters, the Company believes that, based upon its current knowledge of the
facts of each case, it has meritorious defenses to the various claims made and
intends to defend each suit vigorously, and the Company does not believe that
the outcome of any of these lawsuits will have a material adverse effect on the
Company's financial position, results of operations or cash flows.

With respect to certain pending or threatened proceedings involving the
discharge of materials into or protection of the environment, see "Item 1 --
Business -- Environmental and Related Regulation" in the Company's 1996 Annual
Report on Form 10-K.  The Company is also a party to various lawsuits arising
in the ordinary course of business and does not believe that the outcome of any
of these lawsuits will have a material adverse effect on the Company's
financial position, results of operations or cash flows.





                                       10
<PAGE>   172


ITEM 5.  OTHER INFORMATION

On April 25, 1997, the Company received a letter from Huntsman
Corporation ("Huntsman") in which Huntsman reiterated its interest in pursuing
a negotiated merger transaction by which it would acquire the Company for $16
per share in cash.  Huntsman's interest was stated to be conditional upon a
satisfactory due diligence review of the Company by Huntsman.  On April 28, 
1997, the Company announced that it has entered into a confidentiality agreement
with Huntsman to allow Huntsman to conduct its due diligence review of the
Company.  In order to allow shareholders an opportunity to assess these
developments, the Company announced that it will adjourn its special meeting
scheduled for April 30, 1997 to May 22, 1997.  In addition, the Company has
extended the expiration date of its previously announced "Dutch auction" self
tender offer for up to 2,156,250 shares of its Common Stock from May 5, 1997 to
May 29, 1997.

ITEM 6.  EXHIBIT AND REPORTS ON FORM 8-K

(a)      Exhibits:

         27 -- Financial Data Schedule

(b)      Reports Submitted on Form 8-K:

         Current Report on Form 8-K dated March 26, 1997 (Date of event:
         March 20, 1997), as amended on March 27, 1997, which reported the
         resignation of Arthur L. Goeschel from the Company's Board of
         Directors.

                                   SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                               REXENE CORPORATION
                                               Registrant




Date:    April 29, 1997                        By: /s/ Geff Perera      
                                                  -----------------------------
                                               Geff Perera
                                               Executive Vice President and
                                                 Chief Financial Officer





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