Chemtura Corporation, Crompton Corporation, CK Witco, Specialty Chemical, Uniroyal Chemical and Witco

Crompton and Great Lakes Chemical Corporation merged in July 2005 to form Chemtura Corporation, the fourth-largest publicly traded specialty chemical company in the United States and one of the largest producers and marketers of plastics additives in the world with revenues of $3.7 billion. With 7,300 employees in research, manufacturing, sales and administrative facilities in every major market of the world, our vision is to become the world's best specialty chemicals company.

We are a leading supplier of pool and spa products a top marketer of nich agricultural products, a leader in the petroleum additives markets, and a top marketer and producer of urethane polymers. We manufacture and market products that make other products better in automotive, construction, packaging, agricultural and other applications.

Crompton Corporation was formed on September 1, 1999 by the merger of Crompton & Knowles Corporation and Witco Corporation and was briefly known as CKWitco. Crompton Corporation is a global producer and marketer of specialty chemicals, polymer products. Crompton Corporation’s Uniroyal Chemicals, and Witco businesses and brands are some of the most recognizable names in the chemical industry and extrusion industry.

Uniroyal Chemicals
The Crompton Uniroyal Chemicals brand includes three businesses: crop protection, rubber chemicals and elastomers, and urethanes.

The crop protection business produces insecticides, fungicides, growth regulators, herbicides, and miticides, as well as effective seed treatment programs.

The Performance Chemicals and Elastomers business produces a number of specialty products including rubber chemicals and EPDM used in tires and industrial rubber goods, automotive, construction, wire & cable, and industrial applications.

The Urethanes business is the world leader in liquid castable urethane prepolymers as well as a leading supplier of curatives, coating systems, polyester polyols, polyurethane dispersions, and microcellular systems. Applications and end markets served range from mining, oil and gas to graphic arts and recreation.

Witco

The Crompton Vinyl Additives business provides products critical in the manufacture and compounding of polyvinyl chloride. Crompton is the world's largest producer of heat stabilizers and PVC additives, offering a broad line of organotin, mixed metal and metal-free heat stabilizers lubricants, chemical foaming agents and plasticizers.

Crompton Brand
The Crompton Olefins and Styrenics and Petroleum Additives businesses market products under the Crompton brand name.

Olefins and Styrenics Polymer Additives
Crompton Olefins and Styrenics polymer additive products for the global plastics industry are crucial to the polymerization process, as well as to end-use performance of the polymer. Products include aluminum alkyls, anti-blocking agents, catalysts, metallocene/co-catalysts, mold release agents, mold flow improvers, polymer modifiers, polymerization inhibitors, slip agents and other solutions for our customers' formulating and manufacturing challenges.