Adhesive compositions for bonding composites

A method for making a composite comprising (A) applying a thermosetting adhesive to a substrate material to form a composite precursor and (B) consolidating the composite precursor under heat to form the composite, wherein the thermosetting adhesive comprises a mixture of (1) a bonding component and (2) a reaction product of (a) epichlorohydrin and (b) an amine selected from the group consisting of ammonia, a primary amine and mixtures thereof, wherein the reaction product is produced by reacting the epichlorohydrin and the amine in a ratio of 0.25 to 0.60 moles of epichlorohydrin per atom equivalent of amine hydrogen.

A composite precursor comprising a combination of (A) a substrate material and (B) a thermosetting adhesive, wherein the thermosetting adhesive comprises a mixture of (1) a bonding component and (2) a reaction product of (a) epichlorohydrin and (b) an amine selected from the group consisting of ammonia, a primary amine and mixtures thereof, wherein the reaction product is produced by reacting the epichlorohydrin and the amine in a ratio of 0.25 to 0.60 moles of epichlorohydrin per atom equivalent of amine hydrogen.

A composite comprising (A) substrate material bonded into a unitary structure by (B) a cured thermosetting adhesive, wherein the thermosetting adhesive prior to curing comprised a mixture of (1) a bonding component and (2) a reaction product of (a) epichlorohydrin and (b) an amine selected from the group consisting of ammonia, a primary amine and mixtures thereof, wherein the reaction product is produced by reacting the epichlorohydrin and the amine in a ratio of 0.25 to 0.60 moles of epichlorohydrin per atom equivalent of amine hydrogen.