Patent ID: 8389653
Filing Date: 2013-03-05
Classification: C08G,C09D

Abstract:
1. A method of catalyzing a reaction of a hydroxy-functional resin and a blocked isocyanate crosslinker to form a urethane coating, said method comprising the steps of: forming a polymeric ligand from the hydroxy-functional resin; incorporating a metal catalyst with the polymeric ligand to complex the metal catalyst with the polymeric ligand; and reacting the polymeric ligand and the crosslinker to form the urethane coating, wherein the polymeric ligand is formed prior to the reaction of the polymeric ligand and crosslinker to form the urethane coating; wherein the step of forming the polymeric ligand from the hydroxy-functional resin comprises carboxylating the resin by reacting an anhydride with the hydroxy-functional resin.