Thermal curable polyester powder coating composition

Abstract

The invention provides a powder coating composition comprising (A) at least one hydroxyl functional polyester resin binder, and (B) at least one polyurethane resin as cross-linking agent containing blocked isocyanate groups, wherein the at least one hydroxyl functional polyester resin binder (A) and the at least one polyurethane resin (B) both having a melting temperature of 60 to 180° C., in particular, 60 to 160° C. The powder coating composition according to the invention provides the desired technological properties, in particular, thin films and high flexibility in combination with excellent mechanical properties of the coatings.

Dependencies are inferred from the claim text.