Patent ID: 8357764

Claim:
A curable epoxy composition comprising the contact product of at least one epoxy resin and an epoxy curing agent comprising an imidazole-isocyanate adduct which comprises a reaction product of at least one imidazole, at least one diamine, and at least one member selected from the group consisting of at least one polymethylene diisocyanate having 2-8 methylene units and at least one polymethylene poly(phenylisocyanate); wherein the imidazole-isocyanate adduct comprises an adduct represented by formula A: where Z is (CH 2 ) n —NH, p is 0-1 and n is 3-8, R is the polyvalent residue of polymethylene poly(phenylisocyanate) having an isocyanate functionality of 2.1-3.5; and R 1 and R 2 independently represent hydrogen, C1-C20 linear or branched alkyl, C6-C10 aryl, alkylaryl or arylalkyl; or C5-C6 cycloaliphatic.