Patent ID: 7230051
Filing Date: 2007-06-12
Classification: C08F,C08G,C09D,Y10S

Abstract:
1. A method for forming a smooth, cured coating on a substrate surface comprising coating the substrate surface with a coating composition comprising a cross-linkable leveling agent; and a surface coating material, allowing the leveling agent to promote coating composition flow, and curing the coating composition; wherein the leveling agent comprises one or more block copolymers comprising a polysiloxane main chain; and at least one block comprising polymerized unsaturated monomers; the one or more block copolymers are atom transfer radical polymerization products of at least one polysiloxane-containing prepolymer, having at least one terminal transferable group, or at least one lateral transferable group, or a combination thereof, and at least one ethylenically unsaturated monomer, and wherein each transferable group is a labile halogen bonded to a carbon of the polysiloxane-containing prepolymer and the polysiloxane-containing prepolymer is the reaction product of a polysiloxane having at least one terminal or lateral hydrosilyl group, or a combination thereof, and an olefin compound; and, wherein the surface coating material is a cross-linkable powder coating or a cross-linkable binder in solution or dispersion.