POWDER COATING COMPOSITIONS COMPRISING A COPOLYMER OF A GLYCIDYL ESTER AND A CROSSLINKING AGENT

摘要

POWDER COATING COMPOSITIONS COMPRISING A COPOLYMER OF A GLYCIDYL ESTER AND CROSSLINKING AGENT Improved powder coating compositions are disclosed which comprise (1) a copolymer of about 5 to about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated carboxylic acid, e.g., glycidyl acrylate and glycidyl methacrylate, about 2 to about 10 weight percent of a hydroxy acrylate and about 70 to about 93 weight percent of other olefinically unsaturated monomers, preferably monofunctional olefinically unsaturated monomers which lose their sole functionality in polymerization and (2) as crosslinking agents, both hydroxy carboxylic acids and anhydrides, preferably polyanhydrides.