POLYURETHANES, ARTICLES AND COATINGS PREPARED THEREFROM AND METHODS OF MAKING THE SAME

摘要

The present invention provides polyurethanes including a reaction product of components including: (a) an isocyanate functional urethane prepolymer including a reaction product of components including: (i) about 1 equivalent of at least one polyisocyanate; and (ii) about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate; and (b) about 0.1 to about 1 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate, wherein the at least one polyol (ii) can be the same or different from the at least one polyol (b), and wherein the components are essentially free of polyester polyol, polyether polyol, polycarbonate polyol and amine curing agent; compositions, coatings and articles made therefrom and methods of making the same.

主权项

1. A polyurethane comprising a reaction product of components comprising:
(a) an isocyanate functional urethane prepolymer comprising a reaction product of components comprising:
(i) about 1 equivalent of at least one polyisocyanate; and(ii) about 0.01 to about 0.5 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate; and (b) about 0.1 to about 1 equivalent of at least one polyol having 2 hydroxyl groups, based upon the about 1 equivalent of the at least one polyisocyanate,wherein the at least one polyol (ii) can be the same or different from the at least one polyol (b), and wherein the components are essentially free of polyester polyol, polyether polyol, polycarbonate polyol and amine curing agent.