Westlake Chemical Announces That Director Bill Barnett Will Retire

      Westlake Chemical Announces That Director Bill Barnett Will Retire

PR Newswire

HOUSTON, April 5, 2013

HOUSTON, April5, 2013 /PRNewswire/ -- Westlake Chemical Corporation (NYSE:
WLK) announced today that E. William (Bill) Barnett, a director of the company
since 2006, has informed the company that he has elected to retire from the
board after completing his current term, which will expire at the 2013 annual
meeting of stockholders of the company. As a result, Mr. Barnett will not
stand for re-election at the annual meeting.

Mr. James Chao, the chairman of Westlake's board, said, "We are extremely
grateful to Bill for his years of service on our board. Among many
contributions, he acted as chair of our Nominating and Governance Committee
during a period of growth and challenging regulatory changes. We will miss
Bill, and we extend to him our best wishes as he remains active in many
professional areas."

Westlake Chemical Corporation (WLK)

Westlake Chemical Corporation is a manufacturer and supplier of
petrochemicals, polymers and building products with headquarters in Houston,
Texas. The company's range of products includes: ethylene, polyethylene,
styrene, propylene, caustic, VCM, PVC resinand PVC building products,
including PVC pipe, windows and fence. For more information, visit the
company's Web site at www.westlake.com.

SOURCE Westlake Chemical Corporation

Website: http://www.westlake.com
Contact: Media Relations - David R. Hansen - 713.960.9111 or Investor
Relations - Steve Bender - 713.960.9111
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