LIGHT YELLOWISH TRANSPARENT LIQUID AN AMIDOAMINE CURING AGENT HW-502 WITH EXCELLENT TRANSPARENCY Polyamide Epoxy Resin HW-502 is a an amidoamine curing agent produced by a special process. The cured product with epoxy resin has excellent transparency, flexibility, corrosion resistance, low viscosity, long working time, and excellent construction performance 1.The physical and chemical properties Appearance Light Yellowish transparent liquid Viscosity(CPS/25℃) 300-500 Amine