POWER PAINT COMPOSITIONS INCLUDING CARBOXYL TERMINATED POLYETHER CROSSLINKING AGENT

摘要

Powder coating compositions are disclosed which, exclusive of pigments and non-reactive components, comprise a coreactive mixture of: (A) a copolymer of between about 8 and about 30 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and between about 92 and about 70 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature in the range of 40 DEG C to 90 DEG C and a number average molecular weight (Mn) of between about 2500 and about 8500; and (B) a carboxyl terminated polyether crosslinking agent in an amount of between about 0.8 and about 1.2 carboxyl groups for each epoxy group in the copolymer.