Patent ID: 6437056
Filing Date: 2002-08-20
Classification: C09D

Abstract:
Coating compositions containing a binder/crosslinking agent system, one or more organic solvents, anti-sagging agents and, optionally, pigments and/or extenders wherein the binder/crosslinking agent system containsfrom 20 to 80 wt. % of one or more carboxyl-functional components A) selected from the group consisting of carboxyl-functional (meth)acrylic copolymers, carboxyl-functional polyesters, and mixtures thereof the carboxyl functionality of which corresponds in each case to an acid number of from 20 to 300 mg of KOH/g, and from 20 to 80 wt. % of one or more epoxy-functional crosslinking agents having at least two epoxy groups per molecule B), the percentages by weight of A) and B) adding up to 100 wt. %, from 0 to 30 wt. % of one or more polymer polyols C), based on the sum of the weights of components A) and B), from 0 to 20 wt. % of one or more further crosslinking agents E) other than A), B) and C), based on the sum of the weights of A), B) and C), from 0 to 10 wt. % of one or more monoepoxides F), based on the sum of the weights of A) and B), and as anti-sagging agents, from 0.1 to 3 wt. %, based on the resin solids, of one or more solid, finely divided urea compounds D) which have previously been prepared in the presence of at least a portion of the epoxy-functional crosslinking agent(s) B) and which are insoluble in the coating composition, all percentages by weight being based in each case on the solids.