Polymer Coating

August 10, 2005

l Patent No. U.S. 6,518,388 B1
PPG Industries has received a patent for a coating composition comprising a polymer having uretdione groups and a polyamine crosslinker. The polymer being a polyester, or a mixed polyester-polyurethane, has other groups, acrylate, maleic or fumaric groups, capable of reacting with the polyamine crosslinker.