POWER OF ATTORNEY

THE STATE OF TEXAS	(
	(
COUNTY OF HARRIS	(

KNOW ALL MEN BY THESE PRESENTS THAT:
The undersigned hereby appoints Stephen W. Duffy and/or James
L. Simmons as the undersigned?s true and lawful attorney-in-
fact and agent with power to:
(1)	execute for and on behalf of the undersigned, in the
undersigned?s capacity as an officer and/or director of Kraton
Performance Polymers, Inc. (the ?Company?), Forms 3, 4 and 5
(the ?Section 16 Filings?), as required under Section 16 of
the Securities Exchange Act of 1934, as amended (the ?Exchange
Act?), and file such forms with the United States Securities
and Exchange Commission and any stock exchange or similar
authority; and
(2)	do and perform any and all acts for and on behalf of
the undersigned that may be necessary or desirable to complete
and execute any such Section 16 Filings and file such forms
with the United States Securities and Exchange Commission and
any stock exchange or similar authority; and
(3)	take any other action of any type whatsoever in
connection with the foregoing that, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest
of, or legally required by the undersigned, it being understood
that the documents executed by such attorney-in-fact on behalf
of the undersigned pursuant to this Power of Attorney shall be
in such attorney-in-fact?s discretion.
The undersigned hereby grants to such attorney-in-fact full
power and authority to do and perform any and every act and
thing whatsoever requisite, necessary, or proper to be done in
the exercise of any of the rights and powers herein granted, as
fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution
or resubstitution, hereby ratifying and confirming all that such
substitutes, shall lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorney-in-fact,
in serving in such capacity at the request of the undersigned, is
not assuming, nor is the Company assuming, any of the
undersigned?s responsibilities to comply with Section 16 of the
Exchange Act.
This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Section 16
Filings under the Exchange Act with respect to the undersigned?s
holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned by giving written notice
of such revocation to the foregoing attorney-in-fact.
IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney this 28th day of February, 2013.

/S/ STEPHEN E. TREMBLAY
Stephen E. Tremblay