First Quarter 2005 Westlake Chemical Corporation Earnings Conference Call

HOUSTON, April 14, 2005 /PRNewswire-FirstCall via COMTEX/ -- Westlake Chemical Corporation (NYSE: WLK) will release its 2005 first quarter earnings prior to the market opening on Wednesday, May 4, 2005. The company will host a conference call at 11:00 a.m. Eastern Time (10:00 a.m. Central Time) on the same day to discuss the earnings release.

To access the conference call, dial (800) 884-5695, or (617) 786-2960 for international callers, approximately 10 minutes prior to the scheduled start time and reference passcode 78003067.

The conference call will also be available via webcast at eventDetails&c=180248&eventID= 1051971 and the earnings release can be obtained via the company's Web page at, .

This call will be available for replay beginning an hour after the call has ended, and may be accessed until 11:59 AM Eastern Time on May 11th. The replay can be accessed by calling the following numbers: Domestic callers should dial 1-888-286-8010 and international callers may access the replay at 617-801-6888. The access code at both numbers is 75355019.

Westlake 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, vinyl intermediates, PVC and PVC pipe, windows and fence. For more information, visit the company's Web site at .

SOURCE Westlake Chemical Corporation

investors, Ruth Dreessen, , or media, David Hansen, , both of Westlake Chemical Corporation, +1-713-960-9111