Patent ID: 8062709
Filing Date: 2011-11-22
Classification: C08G,D06N

Abstract:
1. A process comprising: a) forming a polyurethane-forming composition, the polyurethane-forming composition including a polyol having an equivalent weight of at least 300 or a mixture thereof with at least one other isocyanate-reactive material, at least one polyisocyanate in an amount sufficient to provide an isocyanate index of from 85 to 130, a particulate inorganic filler, from 0.05 to 0.5 part by weight per 100 parts by weight of isocyanate-reactive materials of a nickel, cadmium or copper acetylacetonate catalyst, and from 0.001 to 0.1 part by weight per 100 parts by weight of isocyanate-reactive materials of an organotin catalyst in which each tin atom is bonded to at least one sulfur atom; b) forming a layer of the composition on a substrate; wherein the maximum temperature of the composition during steps a) and step b) is from 31 to 50° C. and then c) heating the composition to a temperature from 80 to 180° C. to cure the composition and form a polyurethane layer bonded to the substrate.