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Bayer Polymers’ Researchers Discuss Waterborne UV-Curing Polyurethane Dispersions at e5

Published on 2004-05-05. Author : SpecialChem

CHARLOTTE, N.C., May 2, 2004 - Researchers with Bayer Polymers will present their paper on waterborne UV-curing polyurethane dispersions for various wood coatings.

Christoph Irle and Martin Bayona of Bayer Polímeros, Spain, and Bob Wade and Michael Dvorchak of Bayer Polymers LLC, will present their paper May 2-5, here at the E5 UV & EB Expo & Conference.

Their paper is entitled Waterborne UV-curing Polyurethane Dispersions for Clear and Pigmented Coatings on Wood.

Irle, Bayona, Wade and Dvorchak will discuss the benefits of UV- curing coatings, such as very rapid drying abilities that spur activity and high physical property levels. They will also explain the effects of adding water-dispersible polyisocyanates to such coatings.

In their paper, the researchers conclude that the structure of polyurethanes contributes to high hardness and wear resistance even without UV curing. In addition, post-crosslinking UV-cured coatings with water-dispersible polyisocyanates further enhance performance. In pigmented coatings, chemical resistance is particularly increased.

"Solvent-based polyurethanes have a significant share of today's wood coating markets. This is mainly due to their high performance property levels and ease and versatility of application," explained Irle. "Following the same basic principle, UV-curing polyurethane dispersions represent a low VOC and very effective follow up technology. Using the entire toolbox of polyurethane chemistry enables us to further optimize properties."

For more information or a copy of this technical paper, call 1-877- 229-3781 or visit www.BayerUS.com.

With 23,000 employees at 120 sites around the world and 2002 sales of 10.8 billion euros, Bayer Polymers is a leader in the global industry of performance polymers. The company's materials and solutions are the backbone of modern life, serving primarily the automotive, construction, information technology, appliance, furniture as well as sports and leisure industries. As a member of the global Bayer Group, Bayer Polymers benefits from a wealth of resources while enjoying the flexibility to focus on its primary objective: to be the partner of choice in polymer materials.

Bayer Corporation, headquartered in Pittsburgh, is the U.S. holding company of the worldwide Bayer Group, an international health care and chemicals group based in Leverkusen, Germany. Bayer employs 23,300 in North America with net North American sales of 8.8 billion euros in 2003. Bayer's four operating business areas - HealthCare, CropScience, Polymers and Chemicals - produce a broad range of products that help diagnose and treat diseases, purify water, preserve local landmarks, protect crops, advance automobile safety and durability and improve people's lives.

The Bayer Group has 115,400 employees. Its stock is a component of the DAX and is listed on the New York Stock Exchange (ticker symbol: BAY). For 2003, the Group recorded sales of 28.6 billion euros and a group net loss of 1.4 billion euros. Capital expenditures totaled 1.7 billion euros, and 2.4 billion euros was invested in research and development.

Source: Bayer Corp.


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