HOUSTON, Dec. 7 /PRNewswire/ -- Lyondell Chemical Company (NYSE: LYO) announced the election of Karen A. Twitchell to Vice President and Treasurer, effective January 2, 2001.

In her new position, Twitchell will be responsible for all treasury activities of the Lyondell enterprise, including the Equistar Chemicals, LP venture. The corporate finance, banking and insurance functions will report to Twitchell. She will report to Robert T. Blakely, Executive Vice President and Chief Financial Officer.

Prior to joining Lyondell, Twitchell had served as Vice President and Treasurer of Kaiser Aluminum Corporation since 1996. She was previously Vice President and Treasurer of Southdown, Inc., and prior to that she was an investment banker with Credit Suisse First Boston.

Twitchell earned a B.A. degree in economics from Wellesley College and an M.B.A. degree from the Harvard Graduate School of Business Administration.

Lyondell Chemical Company, (www.lyondell.com), with headquarters in Houston, Texas, is the world's largest producer of propylene oxide (PO); the world's number two supplier of TDI (toluene diisocyanate); a leading producer of propylene glycol; a leading producer of other PO derivatives such as BDO (butanediol) and PGE (propylene glycol ether); and a producer of styrene monomer and MTBE as co-products of PO production. Through its 41% interest in Equistar Chemicals, LP, Lyondell also is one of the largest producers of ethylene, propylene and polyethylene in North America and a leading producer of polypropylene, ethylene oxide, ethylene glycol, high value-added specialty polymers and polymeric powder. Through its 58.75% interest in LYONDELL-CITGO Refining LP, Lyondell is one of the largest refiners in the United States, processing extra heavy Venezuelan crude oil to produce gasoline, low sulfur diesel and jet fuel. Lyondell is the third largest methanol producer in the U.S., through its 75% interest in Lyondell Methanol Company, L.P.
SOURCE Lyondell Chemical Company
Web site: http: //www.lyondell.com
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CONTACT: media, Marvin Brown, 713-309-2643, or investors, Sami Ahmad, 713-309-7141, both of Lyondell Chemical Company
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