Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

KRATON CORPORATION

ARTICLE 1

The name of this Corporation is Kraton Corporation.

ARTICLE 2

The address of the Corporation’s registered office in the State of Delaware is 251 Little Falls Drive, City of Wilmington, Delaware 19808 in the County of New Castle. The name of the Corporation’s registered agent at such address is Corporation Service Company.

ARTICLE 3

The nature of the business or purposes to be conducted or promoted is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of Delaware (the “General Corporation Law”).

ARTICLE 4

The total number of shares of stock which the Corporation shall have authority to issue is 1,000 shares of Common Stock, $0.01 par value per share.

ARTICLE 5

The board of directors is expressly authorized to make, repeal, alter, amend and rescind any or all of the Bylaws of the Corporation.

ARTICLE 6

Elections of directors need not be by written ballot unless and to the extent the Bylaws of the Corporation shall so provide.

ARTICLE 7

Meetings of stockholders may be held within or without the State of Delaware, as the Bylaws may provide. The books of the Corporation may be kept (subject to any provision contained in the General Corporation Law) outside the State of Delaware at such place or places as may be designated from time to time by the board of directors or in the Bylaws of the Corporation.

ARTICLE 8

A. The personal liability of the directors of the Corporation is hereby eliminated to the fullest extent permitted by the provisions of paragraph (7) of subsection (b) of Section 102 of the General Corporation Law, as the same may be amended and supplemented.

B. The Corporation shall, to the fullest extent permitted by the provisions of Section 145 of the General Corporation Law, as the same may be amended and supplemented, indemnify any and all persons whom it shall have power to indemnify under said section from and against any and all of the expenses, liabilities, or other matters referred to in or covered by said section, and the indemnification provided for herein shall not be deemed exclusive of any other rights to which those indemnified may be entitled under any Bylaw of the Corporation, agreement, vote of stockholders or disinterested directors or otherwise, both as to action in such person’s official capacity and as to action in another capacity while holding such office, and shall continue as to a person who has ceased to be a director, officer, employee, or agent and shall inure to the benefit of the heirs, executors, and administrators of such person.

C. Any repeal or modification of this Article 8 shall only be prospective and shall not affect the rights or protections or increase the liability of any director under this Article 8 in effect at the time of the alleged occurrence of any act or omission to act giving rise to liability or indemnification.

ARTICLE 9

Unless the Corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall (or, if and only if the Court of Chancery of the State of Delaware lacks subject matter jurisdiction, any state court located within the State of Delaware or, if and only if all such state courts lack subject matter jurisdiction, the federal district court for the District of Delaware), to the fullest extent permitted by applicable law, be the sole and exclusive forum for: (A) any derivative action or proceeding brought on behalf of the Corporation; (B) any action or proceeding (including any class action) asserting a claim of breach of a fiduciary duty owed by any current or former director, officer, employee or agent of the Corporation to the Corporation or the Corporation’s stockholders; (C) any action or proceeding (including any class action) asserting a claim against the Corporation or any current or former director, officer, employee or agent of the Corporation arising pursuant to any provision of the General Corporation Law, this Certificate of Incorporation or the Bylaws of the Corporation; (D) any action or proceeding (including any class action) to interpret, apply, enforce or determine the validity of this Certificate of Incorporation or the Bylaws of the Corporation; or (E) any action asserting a claim against the Corporation or any current or former director, officer, employee or agent of the Corporation governed by the internal affairs doctrine. Any person or entity purchasing or otherwise acquiring any interest in any security of the Corporation shall be deemed to have notice of and consented to the provisions of this section.

ARTICLE 10

The Corporation reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by the laws of the State of Delaware, and all rights conferred upon stockholders herein are granted subject to this reservation.