Patent ID: 6943202
Filing Date: 2005-09-13
Classification: C08G,C09D

Abstract:
1. A radiation-curable polyurethane produced by the process which comprises: (a) reacting at least one diisocyanate monomer with a combination of a high molecular weight polyol and a low molecular weight polyol to provide a polyurethane prepolymer containing unreacted diisocyanate monomer, wherein each polyol is selected from the group consisting of polyether, polyester, polycarbonate, polycaprolactone and hydrocarbon polyols having a number average molecular weight of from about 60 to about 12,000; b) removing unreacted diisocyanate monomer from the polyurethane prepolymer to provide polyurethane prepolymer of reduced unreacted diisocyanate monomer content; and, c) reacting the polyurethane prepolymer of reduced unreacted diisocyanate monomer content with an acrylic monomer to provide radiation-curable polyurethane.