GREAT LAKES ANNOUNCES PRICE INCREASE FOR A RANGE OF POLYMER STABILIZERS

INDIANAPOLIS, INDIANA—Great Lakes Chemical Corporation (NYSE:GLK) today announced it will increase prices worldwide for a range of its polymer stabilizers, effective for shipments after January 1, 2005, or where contracts allow.

Prices will increase for Great Lakes polymer stabilizer product groups as follows:

• Anox® and Alkanox® main antioxidants – up to 15%

• Anox®, Alkanox® and Lowinox® specialty antioxidants – up to 11%

• Lowilite® hindered amine light stabilizers – up to 7%

• Lowilite® benzophenone UV absorbers – up to 6%

The company stated that the new pricing is driven by continued increases in raw material, energy, and transportation costs.

“Great Lakes is committed to continued support of the growing polymer stabilizer market,” said Maurizio Butti, Executive Vice President, Polymer Stabilizers. “These price increases will ensure the long-term supply viability of our products, allowing continued investment in innovation and service, new capacity, and extended product lines.”

Great Lakes antioxidants provide both processing and long-term heat stability to an extensive range of polymers. UV absorbers and hindered amine light stabilizers prevent polymer degradation due to UV radiation from sunlight and other sources.

Through its Polymer Additives division, Great Lakes offers a full line of UV stabilizers, antioxidants, nucleating agents and clarifiers, additive blends, and optical monomers, as well as a leading line of flame retardants that include bromine-, phosphorus-, and antimony-based flame retardants and other synergists. For more information about these product lines, please visit the Great Lakes Polymer Additives web site at www.pa.greatlakes.com

Reader enquiries

Great Lakes Chemical Corporation
9025 North River Road
Suite 400
Indianapolis
Indiana 46240
United States
+1 (317) 715-30 00
www.pa.greatlakes.com

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Notes for editors

Great Lakes Chemical Corporation

Great Lakes Chemical Corporation is the world’s leading producer of certain specialty chemicals for such applications as water treatment, household cleaners, flame retardants, polymer stabilizers, fire suppressants, and performance chemicals. The stock of the company is traded on the New York Stock Exchange. For more information, please visit the Great Lakes web site at www.greatlakes.com.