Patent ID: 6770371
Filing Date: 2004-08-03
Classification: C08G,C09J,Y10T

Abstract:
A method of reinforcing metal substrates and preventing crack propagation in metal substrates comprising:providing a metal substrate having a substantially clean outer surface; providing a paste adhesive; reacting a bisphenol A type epoxy ether resin with a primary aliphatic amine to form an epoxy amine adduct; reacting an alkoxysilane with water to form a hydrolyzed alkoxysilane; reacting said epoxy amine adduct with said hydrolyzed alkoxysilane to form an ambiently curable adhesion promoter; applying said adhesion promoter to said outer surface of said metal substrate; curing said adhesion promoter to said metal substrate under ambient conditions; applying said paste adhesive to said adhesion promoter; and curing said paste adhesive.