Patent ID: 7223477
Filing Date: 2007-05-29
Classification: B41J,C09D,Y10T

Abstract:
1. A coating powder having a low curing temperature and good flexibility in the coated and cured condition comprising an acid functional acrylic resin having an acid number between about 40 and about 220 and a polyester resin, said acrylic resin and said polyester resin being present in a weight ratio between about 30 parts acrylic resin to about 70 parts polyester resin to about 70 parts acrylic resin to about 30 parts polyester resin, an epoxy functional crosslinking agent having an epoxy equivalent weight between about 100 and about 1,000, and a curing catalyst, said coating powder having a stoichiometry of acid groups to epoxy groups of between about 0.5 and 2.0.