Dytek HMD 70 1,6-Hexanediamine 124-09-04 Invista Crosslinking / Coupling / Curing Agents >> Amine Epoxy Resins Inks Coatings General Industrial /Maintenance INKS A greater than 99.9% pure aliphatic diamine, available from 70 to 100 wt% concentrations in water. Aqueous solutions of 70 to 80 wt% HMD are liquids. Higher concentrations are solids at room temperature, but shipped (bulk) as warm liquids. epoxy curing agent in industrial coatings Pure aliphatic diamine in water. Used as an epoxy curing agent in industrial coatings. Possesses compatibility with isocyanates, epoxy and polyamide resins.