GREAT LAKES INCREASES PENTABROMODIPHENYL OXIDE FLAME RETARDANT PRICES

INDIANAPOLIS, INDIANA—Great Lakes Chemical Corporation (NYSE:GLK) today announced that effective for shipments after September 15, 2003, where contracts allow, the company will increase the price for pentabromodiphenyl oxide based flame retardants by 10% in the European region.

Press Kit: New additives from Great Lakes Chemicals Corporation

Great Lakes Chemical Corporation announced the launch of several new additives. Also highlighted is the new production process for Anox 20 phenolic antioxidant.

GREAT LAKES LAUNCHES SMOKE SUPPRESSANT ADDITIVE FOR LOW-SMOKE PVC APPLICATIONS

Smokebloc® AOM-100 is added to PVC compounds when products must meet tight specifications on flammability and smoke production. CHICAGO, ILLINOIS—Great Lakes Chemical Corporation announced (NYSE: GLK) today the launch of Smokebloc® AOM-100 smoke suppressant and flame retardant additive for rigid and flexible PVC applications with low-smoke requirements.

GREAT LAKES DEVELOPS FLAME RETARDANTS THAT MEET CHANGING DEMANDS OF THE POLYURETHANE MARKET

. CHICAGO, ILLINOIS—Great Lakes Chemical Corporation (NYSE:GLK) today announced the introduction of three flame retardants that meet changing demands of the polyurethane foam market sparked by regulatory actions in North America and Europe.

GREAT LAKES LAUNCHES POLYBROMINATED STYRENE FLAME RETARDANT THAT OFFERS UNIQUE COMPATIBILITY IN HIGH PERFORMANCE POLYESTERS AND POLYAMIDES

CHICAGO, ILLINOIS—Great Lakes Chemical Corporation (NYSE:GLK) today announced the launch of Firemaster® CP-44HF flame retardant, a high flow, polybrominated styrene co-polymer that offers unique compatibility in thermoplastic polyesters and high temperature polyamides.

GREAT LAKES INTRODUCES ANOX FIBERPLUS BLENDS: A NEW CONCEPT IN STABILIZER SOLUTIONS FOR POLYPROPYLENE FIBER PRODUCTION

. CHICAGO, ILLINOIS — Great Lakes Chemical Corporation (NYSE:GLK) today announced the launch of Anox™ FiberPlus polymer stabilizer blends, a solution-focused concept for the process stabilization of polypropylene fibers.

GREAT LAKES TO PRODUCE A NEW GRADE ANOX 20 ANTIOXIDANT

CHICAGO, ILLINOIS—Great Lakes Chemical Corporation (NYSE:GLK) today announced the company will begin producing a new grade of Anox™ 20 hindered phenolic antioxidant with a non-organotin catalyst. The new grade will be first available in the 4th quarter of 2003.

£3 MILLION INVESTMENT IN TRAFFORD PARK COMPANY

£3 MILLION INVESTMENT IN TRAFFORD PARK COMPANY Great Lakes Manufacturing (UK) Ltd. is located at Tenax Road, Trafford Park. The site was established in 1939 as ‘The Geigy Colour Company’. In the last 30 years ownership has passed from Ciba Geigy to the US owned FMC Corporation, before acquisition by Great Lakes in 1999.

GREAT LAKES EXPANDS ANTIMONY OXIDE CAPACITY IN MEXICO

INDIANAPOLIS, INDIANA -May 19, 2003- Great Lakes Chemical Corporation (NYSE: GLK) today announced it has added a fifth antimony oxide production line at its Reynosa, Mexico, facility. Commercial production started in February 2003 and immediately boosted capacity by 20 percent.

GREAT LAKES LAUNCHES ASHLESS, MULTIFUNCTIONAL ADDITIVE FOR INDUSTRIAL OILS

Durad® MA3000 is an ashless, multifunctional additive, which can replace metal containing additives in a broad range of industrial oils. INDIANAPOLIS, Indiana—Great Lakes Chemical Corporation today announced the introduction of a new ashless, multifunctional additive, DURAD® MA3000, developed as an alternative to metal-containing additives for industrial oils. The latest in a line of synthetic, metal-free multifunctional additives for industrial oils, DURAD MA3000 offers excellent oil stabilization, anti-wear and extreme-pressure performance to such lubricants as hydraulic, gear and circulatory oils.

GREAT LAKES LAUNCHES THREE NEW DURAD TRIALKYL PHOSPHATE ANTI-WEAR AND EXTREME-PRESSURE ADDITIVES

Durad® trialkyl phosphate anti-wear and extreme-pressure lubricant additives offer an effective alternative to aryl phosphate additives in environmentally sensitive applications
 INDIANAPOLIS, Indiana—Great Lakes Chemical Corporation (NYSE: GLK) today announced the launch of DURAD® 40, DURAD®48 and DURAD® 60 trialkyl phosphate anti-wear and extreme-pressure lubricant additives as effective alternatives to aryl phosphate additives for environmentally sensitive applications where the release of phenolic materials is a concern.

Great Lakes Present Their Latest Additives for Polyurethane at Utech 2003

Reofos NHP is a scorch free, low fogging flame retardant for flexible automotive foams that maintains excellent physical properties during ageing INDIANAPOLIS, INDIANA—Great Lakes Chemical Corporation (NYSE:GLK) today announced that the latest additions to their range of flame retardants and polymer stabilisers for polyurethane applications will be presented at Utech 2003.