Bayer MaterialScience LLC has announced that it will close its underutilized Desmodur CB aromatic polyisocyanate production facility in New Martinsville, WV, by the end of the first quarter of 2005. "The NAFTA demand for Desmodur CB has decreased significantly over the last several years," said Don Hummel, head of the Coatings, Adhesives and Sealants Business, Bayer MaterialScience NAFTA. "The current market size does not justify domestic manufacture of this product line any longer." Desmodur CB is used as a raw material for general industrial, wood and magnetic tape coatings. In the future, Bayer will supply equivalent products under the trade name Desmodur L to the North American markets. The Desmodur L products are being manufactured at Bayer's Leverkusen, Germany, plant.