Patent ID: 7666954

Claim:
An amine-epoxy composition comprising the contact product of: (a) an amine curing agent component comprising: (i) 90% to 10% by weight, based on total amine curing agent component, of at least one N,N′-dimethyl secondary diamine polymer comprising a mixture of different size molecules having different numbers of repeating units, such polymer having the formula: wherein X is a moiety having the formula: wherein: R 1 is a C 2 -C 8 linear or branched alkanediyl; the at least one N,N′-dimethyl secondary diamine polymer has a number-average molecular weight (M n ) from about 140 to about 1000; n comprises integers in the range from 1 to 50, the average of which is determined as a function of M n ; and (ii) 10% to 90% by weight, based on total amine curing agent component, of at least one multifunctional amine having 3 or more active amine hydrogens; and (b) an epoxy component comprising at least one multifunctional epoxy resin.