Patent ID: 6646153
Filing Date: 2003-11-11
Classification: C07C,C08G,C09D

Abstract:
A hydroxy functional urethane compound comprising the reaction product of:a) a hydroxy functional urethane intermediate containing a tertiary carbamate group prepared by reaction of a cyclic 5-ring carbonate with a beta-hydroxy functional, secondary amine, said intermediate represented by the formula: â€ƒwherein R1 and R2=hydrogen, an alkyl of 1-4 carbon atoms, cycloalkyl or R6â€”Oâ€”, R6â€”COâ€”Oâ€” or R6 optionally substituted with R6â€”Oâ€” or R6â€”COâ€”Oâ€”; R6=an alkyl, cycloalkyl or benzylic group having up to 18 carbon atoms; R4 and R5=hydrogen or alkyl group optionally containing a hydroxyl group; and R3=alkyl, cycloalkyl or benzylic group optionally containing an ether linkage and/or a hydroxyl group, or HOâ€”CH(R1)â€”CH(R2)â€”; with b) a compound having at least 2 isocyanate groups; wherein said hydroxy functional urethane intermediate of a) and said compound having at least 2 isocyanate groups of b) has an OH:NCO ratio ranging from 2:1 to 4:1: and further wherein the hydroxy functional urethane compound produced is free from isocyanate groups.