hdi trimer   ht-90bs   application： wannate®ht-90bs is an aliphatic polyisocyanate based on hexamethylene diisocyanate(hdi) and dissolved in 10% n-butyl acetate and solvent naphtha 100(1:1),colorless to slightly yellowish clear liquid. equivalent weight approx. 214 density at 25℃ approx. 1.13g/ml flash point approx. 50℃ wannate® ht-90bs can be used as the hardener component for lightfast two-component polyurethane coatings with high resistance to...