Polyamide curing agent DH-115S for epoxy zinc-rich primer Description DH-115S is a polyamide curing agent designed for epoxy zinc-rich primer and anti-corrosion primer systems. It provides strong adhesion, long pot life, and dependable water resistance for metal substrates. Suitable for pre-treatment and primer coats on steel before topcoat application. Specifications DH-115S Unit Value Appearance / Amber liquid Color Gardener 9 max A.H.E. W g/eq 200 Amine value mgKOH/g 180