Westlake Chemical Cancels Presentation at the CSFB 18th Annual Chemical Conference

HOUSTON, Sept. 26 /PRNewswire-FirstCall/ -- Westlake Chemical Corporation (NYSE: WLK) announced today that it has cancelled its presentation originally scheduled to be made on Tuesday, September 27, 2005, at 9:15 a.m. Eastern time at the CSFB 18TH Annual Chemical Conference in New York City. The cancellation is due to the impact of Hurricane Rita on the Gulf Coast where two of the Company's facilities are located.

Westlake Chemical announced earlier this morning that those two plants sustained only minor damage during the hurricane.

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.westlakechemical.com .

SOURCE Westlake Chemical Corporation

Ruth I. Dreessen - Investor Relations
David R. Hansen - Media Relations
both of Westlake Chemical Corporation, +1-713-960-9111
Web site: http://www.westlakechemical.com