Powdered thermosetting composition for coatings

Composition according to any of the preceding claims, wherein the carboxyl group containing semi-crystalline polyesters (b) and (c) both have an acid number (AN) from 10-50 mg KOH/g, a number averaged molecular weight (Mn) from 2200-17000, a fusion zone from 30-150° C., a glass transition temperature (Tg) from −50 to 50° C., a degree of crystallinity of at least 5 J/g and an ICI (cone/plate) viscosity at 175° C. from 5-20000 mPa.s.

Composition according to any of the preceding claims, wherein the glycidyl group containing acrylic copolymer consists of 10-90 mole % of a glycidyl group containing monomer selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, methyl glycidyl acrylate, methyl glycidyl methacrylate, 3,4-epoxycyclohexylmethyl acrylate, 3,4-epoxycyclohexylmethyl methacrylate, acrylic glycidyl ether and mixtures thereof and 10-90 mole % of monomers copolymerisable with the glycidyl group containing monomers.

Composition according to any of the preceding claims, wherein the glycidyl group containing acrylic copolymer has an epoxy equivalent weight of 1.0 to 7.0 milliequivalent of epoxy/gram of polymer, a number averaged molecular weight (Mn) ranging from 1000 to 10000, a glass transition temperature (Tg) from 40-85° C. and an ICI (cone/plate) viscosity at 200° C. from 60-50000 mPa.s.

Composition according to any of the preceding claims, further comprising one or more additive(s) selected from the group consisting of catalysts, fillers, flow control agents, degassing agents, UV-light absorbers, light stabilizers, antioxidants and other stabilizers.

Composition according to any of the preceding claims, further comprising one or more dyes and/or pigments, such as metal oxides, metal hydroxides, metal powders, sulphides, sulphates, carbonates, silicates, carbon black, talc, china clay, barytes, iron blue, lead blue, organic reds and organic maroons.