Westlake Announces Leadership Changes in Vinyls Segment

HOUSTON, April 5, 2010 /PRNewswire via COMTEX/ --Westlake Chemical Corporation (NYSE: WLK) today announced that Mr. Wayne D. Morse, Sr. Vice President and head of the company's Vinyls segment, has elected to retire effective the end of April after a long and distinguished career.

Mr. Morse has been an important fixture within the vinyls industry and Westlake's organization for over 40 years. Mr. Albert Chao, President and CEO stated, "We wish to express our appreciation to Wayne for his leadership and dedication to the growth of our company. During his tenure he has helped shape the enterprise that we know today. Many of the businesses, plants and operations that make up the company have been built or led by him. We congratulate him on his successful career and lasting contribution to the company."

Mr. Robert F. Buesinger, 53, has been appointed to replace Mr. Morse and will assume the position of Sr. Vice President, Vinyls. In this regard he will direct all commercial and related business operations on a global basis and will report to Mr. Albert Chao. "We are pleased to have a proven petrochemicals and plastics executive of Bob's stature to help us as we continue to build and strengthen our Vinyls business and to position the business for growth on a global basis," said Albert Chao.

Before joining Westlake, Mr. Buesinger was an executive with Chevron Phillips Chemical Company where he led the Performance Pipe Division as well as the Alpha Olefins and PolyAlpha Olefins businesses. He also served as the company's President and Managing Director of its Asia Region in Singapore. He holds a B.S. in Chemical Engineering from Tulane University.

Westlake Chemical Corporation (WLK)

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

The statements in this release relating to the organizational changes as well as any other matters that are not historical facts, are forward-looking statements that are subject to risks and uncertainties. Actual results could differ materially. For more detailed information about factors that could cause actual results to differ materially, please refer to Westlake's Annual Report on Form 10-K for the year ended December 31, 2009, which was filed in February 2010.

SOURCE Westlake Chemical Corporation