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Coatings Ingredients
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Eastman Announces CMCAB Water Dispersible Cellulosic

Published on 2002-05-02. Author : SpecialChem

KINGSPORT, Tenn. (Oct. 12, 2000)- Eastman Chemical Company (NYSE:EMN) today announced a new water dispersible cellulosic developed for the waterborne coatings industry. In water dispersible coatings applications, Eastman CMCAB 641-0.5 provides surface enhancing properties similar to that of its solvent-based cellulose acetate butyrate counterparts.

"Waterborne coatings sometimes lack the performance characteristics of solvent-based coatings," said Mike Callahan, business market manager, coatings specialties. "Eastman developed CMCAB, which offers unique rheology properties, to help waterborne coatings perform better."

CMCAB addresses the specific performance needs of the waterborne automotive original equipment manufacture (OEM) and interior wood stains market segments. According to Callahan, the automotive OEM market requires coatings with superior appearance that apply evenly without sagging. "The addition of CMCAB to waterborne coatings not only hastens drying and prevents sagging, facilitates good flake control and redissolve resistance." CMCAB is used as part of the rheology package at 2 percent or less of the total formula.

"The most significant benefit of CMCAB for interior waterborne wood stains is its low grain-raising properties," said Callahan. "The use of CMCAB promotes a smooth finish and has excellent adhesion to UV topcoats." CMCAB allows formulation of waterborne wood stains with solids content in the 5-8 percent range as compared to the 30 percent generally found in other waterborne wood stain products. The lower solids aid the end-user by reducing build up on brushes that causes downtime for clean up when using waterborne stains. CMCAB-containing wood stains can be "ragged on" like solventborne wood stains.

Eastman is currently making a 50,000-pound trial run in its Kingsport, Tenn. facility, and worldwide product sampling is underway. The company plans to ramp up to full production capacity by mid-2001.

Eastman offers a variety of products for coatings applications, including adhesion promoters (chlorinated and non-chlorinated), resins, cellulose acetate butyrates and propionates, and its proprietary Texanol ester alcohol.

Headquartered in Kingsport, Eastman manufactures and markets plastics, chemicals and fibers. Eastman employs approximately 15,000 people in more than 30 countries and had 1999 sales of $4.59 billion.

Source: Eastman Chemical Company

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