Patent ID: 6743867
Filing Date: 2004-06-01
Classification: C08L,C09D

Abstract:
A coating compound comprising:a binder/crosslinking agent system that comprises: 20 wt. % to 80 wt. % of one or more carboxyl-functional components A) selected from carboxyl-functional (meth)acrylic copolymers, carboxyl-functional polyesters, or a combination thereof, which in each case may be urethanised or modified with lactone and the carboxyl functionality of which corresponds in each case to an acid value from 15 to 300 mg KOH/g, and 80 wt. % to 20 wt. % of one or more epoxy-functional (meth)acrylic copolymers B) with a calculated epoxy equivalent from 200 g/mole to 700 g/mole, the percentages by weight of components A) and B) adding up to 100 wt. %, and the crosslinking ratio between the carboxyl groups of component A) and the epoxy groups of component B) being from 1:1 to 1:3, 0 wt. % to 30 wt. % of one or more polymer polyols C) which are different from components A) and B), based on the sum of the solids weights of components A) and B), 0 wt. % to 20 wt. % of one or more additional crosslinking agents D) which are different from components A), B) and C), based on the sum of components A), B) and C), and 0 wt. % to 10 wt. % of one or more polyepoxides, monoepoxides, or a combination thereof E) which are different from component B), based on the sum of the solids weights of components A) and B), wherein the epoxy-functional (meth)acrylic copolymers B) have a branched molecule structure corresponding to a calculated branching equivalent weight from 5000 to 60,000 g/mole.