Patent ID: 8178598

Claim:
An epoxy resin curing agent which has been obtained by reacting a glycidyl ether compound (c) with an amide reactant; the amide reactant being obtained from a polyamine mixture (a) comprising 25-75 mol % of a polyoxyalkylene polyamine represented by following formula (1) or (2) (R: hydrogen or methyl group, m is an integer of from 1 to 10, n: an integer of 1 or 2) (R: hydrogen or methyl group and x+y+z is from 1 to 6); reacted with a carboxylic acid component (b) selected from a polymerized fatty acid, and a fatty acid having 10 to 20 carbon atoms, or a mixture thereof; wherein 0.2 to 0.7 equivalent of the carboxylic acid component (b), and 0.01 to 0.2 equivalent of the glycidyl ether compound (c) are reacted with 1 equivalent of primary amino groups of the polyamine mixture (a); and wherein the curing agent has an active hydrogen equivalent in a range of 150 to 250; and, further comprising at least one solvent.