Bayer MaterialScience Highlights New Waterborne UV-Curing Co-Solvent Free PUDs For Wood Coatings Market

Bayer MaterialScience at American Coatings Show 2008:

Charlotte, N.C., June 2, 2008 -- Coatings for exterior millwork, which includes exterior siding, decks and doors, require distinct performance properties - excellent light stability, high flexibility, and freeze/thaw cycling properties - to name a few.

New Waterborne (WB) UV-Curing co-solvent free Polyurethane Dispersions (PUDs) provide excellent exterior weathering properties, high flexibility, enhanced water resistance, and improved adhesion to difficult substrates such as wood and plastic. WB UV PUDs will be featured at Bayer MaterialScience's (BMS) booth, #1545, at the American Coatings Show, June 2-5, at the Charlotte Convention Center.

To demonstrate the weathering properties of WB UV PUDs, BMS is using an innovative accelerated weathering tester designed to simulate outdoor weathering of exterior wood coatings.

"Accelerated weathering of coatings for wood by QUV-A with direct water spray closely approximates natural weathering," explains Robert Wade, Bayer MaterialScience LLC. "This method simulates the erosion and cleaning typical for exterior coated wood, increases the moisture content of the wood above what is typically found in accelerated test procedures and subjects the coating to a much greater thermal shock than condensation methods," continues Wade.

Wade emphasizes that the environmental benefits of waterborne UV-curing PUDs should not be overlooked. "Environmental regulations are continually changing to reduce both plant emissions and VOCs of formulated coatings," explains Wade. "Of the broad variety of products that have been commercialized in the wood coatings market over the last decade, the most promising environmentally friendly technology of these systems is waterborne UV-curing PUDs."

Bayer MaterialScience LLC is one of the leading producers of polymers and high-performance plastics in North America and is part of the global Bayer MaterialScience business with nearly 15,400 employees at 30 sites around the world and 2007 sales of 10.4 billion euros. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life.

The main segments served are the automotive, electrical and electronics, construction, medical, and sports and leisure industries. Our inorganic basic chemicals unit produces chlorine and related essential products for the chemicals industry. Let us give life to your vision. Bayer MaterialScience -- Where VisionWorks.

Bayer Corporation, headquartered in Pittsburgh, is a subsidiary of Bayer AG, an international health care, nutrition and high-tech materials group based in Leverkusen, Germany. In North America, Bayer had 2007 net sales of 8.1 billion euros and employed 16,800 at year end. Bayer's three subgroups, Bayer HealthCare, Bayer CropScience and Bayer MaterialScience, improve people's lives through a broad range of essential products that help diagnose, prevent and treat diseases; protect crops and enhance yields; and advance automobile safety and durability.


Thomas Erdner, Phone: 412-777-5200


For more information about Bayer MaterialScience's polyurethane coating technology, call 1-800-662-2927, e-mail or visit

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