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                                                                    Exhibit 3.21

                              ARTICLES OF AMENDMENT

                                     TO THE

                            ARTICLES OF INCORPORATION

                                       OF

                            HUNTSMAN KCL CORPORATION

                           EFFECTIVE DECEMBER 7, 2000

            In accordance with Section 16-10a-1006 of the Utah Revised Business
Corporation Act ("URBCA"), Huntsman KCL Corporation, a Utah corporation (the
"Corporation"), hereby declares and certifies as follows:

            1. The name of the Corporation is Huntsman KCL Corporation.

            2. Article I of the Articles of Incorporation of the Corporation
(the "Articles") is hereby amended (the "Amendment") to delete Article I of the
Articles in its entirety and to substitute the following provision:

                                   Article I.

            The name of the Corporation is Pliant Solutions Corporation.


            3. The Amendment does not provide for an exchange, reclassification,
or cancellation of issued shares.

            4. The Amendment was adopted as of November 15, 2000 in accordance
with the provisions of the URBCA.

            5. The Amendment was approved by the shareholder of the Corporation
(the "Shareholder"). The designation, number of outstanding shares, number of
votes entitled to be cast by each voting group, number of votes of each voting
group indisputably represented, and the total number of votes cast for and
against the Amendment were as follows:

                                 Votes
                               Entitled
 Designation    Outstanding      to be        Votes      Votes     Votes
                   Shares        Cast      Represented    For     Against
-------------------------------------------------------------------------------
Common Stock       1,000         1,000        1,000      1,000       0

            The number of votes cast for the Amendment was sufficient for
approval.
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            6. Pursuant to Section 16-10a-123 of the URBCA, these Articles of
Amendment shall be effective on December 7, 2000.

            IN WITNESS WHEREOF, these Articles of Amendment have been executed
by the Corporation on November 30, 2000.

                                Huntsman KCL Corporation,
                                a Utah corporation

                                /s/Ronald G. Moffitt
                                ---------------------------------------------
                                Ronald G. Moffitt
                                Senior Vice President and Secretary

                                 MAILING ADDRESS

            If, upon completion of filing of the above Articles of Amendment,
the Utah Department of Commerce, Division of Corporations and Commercial Code
elects to send a copy of the Articles of Amendment to Huntsman KCL Corporation
by mail, the address to which the copy should be mailed is:

                              Nathan W. Jones, Esq.
                                 Stoel Rives LLP
                        201 South Main Street, Suite 1100
                           Salt Lake City, Utah 84111


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