news The effect of 4,4′-diaminodiphenylmethane as a curing agent on the performance of epoxy coatings The Effect of 4,4′-Diaminodiphenylmethane (DDM) as a Curing Agent on the Performance of Epoxy ... 05/09264′-diaminodiphenylmethane as a curing agent on the performance of epoxy coatings The effect of 4