hdi low viscosity ht-600   about： wannate® ht-600 is a low viscosity solvent-free polyfunctional aliphatic polyisocyanate based on hexamethylene diisocyanate (hdi). hdi trimer can be used as the hardener component for lightfast two-component polyurethane coatings with high resistance to chemicals and weathering, very good gloss retention and outstanding mechanical properties. the main applications for coatings based...