BAYER ENDORSES NEW POLYASPARTIC ALIPHATIC COATING TECHNOLOGY FOR HARD WEARING APPLICATIONS

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BAYER ENDORSES NEW POLYASPARTIC ALIPHATIC COATING TECHNOLOGY FOR HARD WEARING APPLICATIONS
15 February 2004 - Bayer MaterialScience AG

Bayer scientists have refined a new class of polyurea polymer for coating metal and concrete surfaces in a myriad of industrial and commercial applications subject to harsh environmental conditions such as railcar coatings, bridges, flooring topcoats, tunnels and light poles.

Called polyaspartic aliphatic coating technology, it is based on aliphatic polyisocyanates and aliphatic diamines (polyaspartic esters). Polyaspartic coatings offer many benefits over previous coating methods including increased speed of cure, increased film build, good weather characteristics, and excellent corrosion protection. In addition, polyaspartic coatings can be formulated to be nearly free of VOCs, thereby meeting various pollution-protection standards.

During a recent project to widen the San Mateo-Hayward Bridge, the state of California selected polyaspartic coating technology to provide a non-yellowing, fast-drying topcoat to their long-term protective coating system. Ed Squiller, Technical Manager - Construction and Maintenance Coatings for Bayer, describes the success of this real-life application.

'As part of a $113 million widening project by the California Department of Transportation (CalTrans), the bridge received the protective coating on new concrete structures, which is expected to prolong the bridge’s life by 25 percent,' Squiller said. 'The unique approach is intended to prevent salt water and saline fog from penetrating the concrete and corroding the steel reinforcement bar (re-bar) that adds strength to the bridge.' With the help of Bayer’s Polyaspartic coating process, CalTrans hopes to extend the bridge’s life by 25 to 125 years, enabling the bridge to serve the bay region for generations to come.

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About: Bayer MaterialScience AG
Bayer Corporation, headquartered in Pittsburgh, is part of the worldwide Bayer Group, an international health care, nutrition and innovative materials 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 three operating business areas – HealthCare, CropScience and MaterialScience, improve people’s lives through a broad range of essential products that help diagnose and treat diseases, protect crops and advance automobile safety and durability.

Bayer MaterialScience AG is one of the world's largest producers of polymers and high-performance plastics. The main customers for Its innovative developments in coatings, adhesives, insulating materials and sealants, polycarbonates and polyurethanes are the automotive and construction industries, the electrical/electronics segment and manufacturers of sports and leisure goods, packaging, and medical devices.

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