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Patent No. U.S. 6,576,343 B2



Published August 11, 2005
Patent No. U.S. 6,576,343 B2
Valspar Corp. has received a patent for a metal article having at least one surface coated with a cured primer and an adherent layer of a cured coating composition applied directly to the cured primer. The cured coating composition is comprised of approximately 50- 90%, by weight of nonvolatile material of an acrylate copolymer having pendant glycidyl groups, wherein the acrylate copolymer comprises a monomer unit containing a glycidyl group and) an alkyl (meth)acrylate monomer unit; 10-50%, by weight of nonvolatile material of an acid-terminated polyester having a weight average molecular weight of at least 10,000 the polyester prepared from a diol or a triol and a polycarboxylic acid or anhydride, the polycarboxylic acid or anhydride selected from the group consisting of maleic anhydride, maleic acid, fumaric acid, succinic anhydride, succinic acid, adipic acid, phthalic acid, phthalic anhydride, 5-tert-butyl isophthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, endomethylenetetrahydrophthalic anhydride, azelaic acid, sebacic acid, tetrachlorophthalic anhydride, chlorendic acid, isophthalic acid, trimellitic anhydride, terephthalic acid, a naphthalene dicarboxylic acid, glutaric acid, and mixtures thereof; and a nonaqueous carrier.


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