Polyurethane resin composition

Claim 1

A polyurethane resin composition comprising (A) a urethane prepolymer composition containing 0.5 to 15.0% by weight based on said prepolymer composition of an active isocyanate group, said prepolymer composition prepared by reacting (1) a polyoxyalkylene ether polyol and/or polyester polyol and (2) a stoichiometric excess of a polyisocyanate compound and (B) 0.05 to 5.0% by weight based on the polyurethane resin composition of a reaction product of (1) an amine compound having a primary and/or secondary amino group and containing at least one alkoxysilyl group of the formula: ##STR5## wherein R 1 and R 2 are the same or different and are each alkyl having 1 to 4 carbon atoms and n is 0, 1 or 2, and (2) a stoichiometrically equivalent or excess amount of a carbonyl compound selected from the group consisting of an aldehyde, a cyclic ketone, an aliphatic ketone, and a β-dicarbonyl compound of the formula: R.sup.4 --CO--CH.sub.2 --CO--R.sup.5 wherein R 4 and R 5 are the same or different and each are an alkyl having 1 to 16 carbon atoms, an aryl having 6 to 12 carbon atoms, or an alkoxy having 1 to 4 carbon atoms, said reaction product containing enamine or ketimine groups formed by a dehydration condensation reaction of the carbonyl group of said carbonyl compound with the primary and/or secondary amino group of said amine compound.