Patent ID: 8518547

Claim:
A curing agent composition comprising the contact product of: (a) at least one alkylated polyalkylene polyamine having the formula: wherein R A is a C 5 to C 16 alkyl; R B , R D , and R E are independently R A or a hydrogen atom; R C is R A or a hydrogen atom and n is 1, 2, 3, 4, 5, 6, or 7; provided that, the alkylated polyamine has at least three active amine hydrogen atoms; and (b) at least one multifunctional amine having 3 or more active amine hydrogens, 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.