Patent ID: 6277939
Filing Date: 2001-08-21
Classification: C08F,C08G,C08L,C09D,Y10T

Abstract:
A method of preparing a cured, unsaturated, polyester resin composition substrate, which method comprises:a) providing an unsaturated polyester resin composition prepared by the reaction of a dicarboxylic acid and a dihydroxy alcohol, and which polyester resin composition includes a cross-linking amount of a cross-linking monomer in an amount of less than 40% by weight of the composition and a photoinitiating amount of a photoinitiator;b) adding an additive amount of a liquid acrylate-urethane prepolymer to the polyester resin composition, the prepolymer prepared by the reaction of free NCO groups of a polyisocyanate or polyisocyanate prepolymer with a hydroxy-functional acrylic monomer;c) applying the polyester resin composition onto a substrate; andd) exposing the applied polyester resin composition to photo radiation to promote curing of the polyester resin composition.