Patent ID: 8298368
Filing Date: 2012-10-30
Classification: C08G,C09J,Y10T

Abstract:
1. A primer composition that includes a, b, c, and d as defined below; a. an adhesion promoter, which is an adduct prepared by the reaction of at least one aromatic polyisocyanate compound, with an active hydrogen containing moiety of an organofunctional silane; b. a prepolymer derived from the reaction of at least one aliphatic polyisocyanate and a polyol, and is at least partially reacted with an active hydrogen containing moiety of an organofunctional silane; c. a solvent; and d. an isocyanate function prepolymer with an isocyanate content greater than about 1%, and being the reaction product of a polyol and an aromatic polyisocyanate wherein the polyol has a functionality of greater than about 2 and a molecular weight (Mn) greater than about 300; wherein the adhesion promoter is present in a weight ratio of about 1:100 to about 2:1 parts adhesion promoter to aliphatic isocyanate prepolymer.