Patent ID: 6103849
Filing Date: 2000-08-15
Classification: C08G,C09D

Abstract:
A storage stable, one-component polyurethane composition useful as a sealant or coating which cures at elevated temperature comprisinga) an isocyanate selected from(1) isocyanate terminated prepolymers formed from a polyisocyanate and a hydroxyl group containing compound having at least two hydroxyl groups and a molecular weight greater than 500 which prepolymers have been blocked with a phenol or oxime,(2) polyisocyanate adducts in which the free isocyanate groups have been blocked with a phenol or oxime, and(3) monomeric isocyanates which have been blocked with a phenol or oxime;b) at least one compound selected from the group consisting of polyketimines having amino groups attached to secondary carbon atoms, polyenamines and oxazolidines; andc) a compound which generates water under the curing conditions in which components a), b) and c) are used in amounts such that the equivalent ratio of a):b):c) is from about 1:0.1:0.3 to about 1:2:2.