Acid-blocked amine catalysts for the production of polyurethanes

摘要

Novel acid-blocked amine catalysts and their use in the preparation of polyurethanes. The acid-blocked amine catalysts have the general structure shown below:wherein A is the residue of an organic acid anhydride; R1 is H or C1 to C6 alkyl; R2 is H or C1 to C6 alkyl; n is an integer of 0 to 10; and B is a compound containing a protonated amine and one or more primary amine, secondary amine, or tertiary amine groups.