Patent ID: 8147964

Claim:
A curing agent composition comprising (a) at least one benzylated polyalkylene polyamine having at least three nitrogen atoms, at least three active amine hydrogen atoms and at least one substituted or unsubstituted benzyl group and (b) at least one multifunctional amine having 3 or more active amine hydrogens; wherein the at least one benzylated polyalkylene polyamine comprises the reductive amination product of at least one substituted or unsubstituted benzaldehyde compound with at least one polyalkylene polyamine; and wherein the at least one multifunctional amine comprises at least one member selected from the group consisting of ethylenediamine (EDA), diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), propylenediamine, dipropylenetriamine, tripropylenetetramine, N-3-aminopropyl ethylenediamine (Am3), N,N′-bis(3-aminopropyl) ethylenediamine (Am4), N,N,N′-tris(3-aminopropyl) ethylenediamine (Am5); N-3-aminopropyl-1,3-diaminopropane, N,N′-bis(3-aminopropyl)-1,3-diaminopropane, N,N,N′-tris(3-aminopropyl)-1,3-diaminopropane, and any combination thereof.