Patent ID: 8735526
Filing Date: 2014-05-27
Classification: C08G,C09D

Abstract:
1. A method of making a polymer wherein the polymer is made by performing a reaction in a mixture comprising: 1) an imine selected from polyaldimines, hydroxyaldimines, polyketimines, and hydroxyketimines; 2) a polyisocyanate; and 3) a hydroxyl compound, if the imine is not a hydroxyimine; wherein the hydroxyl compound is an alcohol, a glycol, or a polyol; wherein the polymer comprises urea linkages formed from the imine and polyisocyanate; wherein the polymer comprises urethane linkages formed from the hydroxyl group of the hydroxyimine or the hydroxyl compound and the polyisocyanate; wherein the reaction is performed in the absence of solvent; wherein the reaction forms a crosslinked coating; and wherein the molar ratio of urea linkages to urethane linkages is at least 2:1.