application Covestro Desmodur N3200 HDI Curing Agent Low Viscosity Lightfast Polyurethane Coatings Products Introduction Aliphatic polyisocyanate (low viscosity HDI biuret), used as curing agent comp... 11/20178Covestro Desmodur N3200 HDI Curing Agent Low Viscosity Lightfast Polyurethane Coatings