hdi low viscosity hxlv   about： coronate hxlv is a low-viscosity solvent-free hexamethylene diisocyanate trimer based polyisocyanate (hdi trimer).  coronate hxlv can reacted with appropriate polyols to produce non-yellowing polyurethane paints with excellent weatherability, excellent uv resistance, and excellent heat resistance. coronate hxlv physical properties： % nco 22.5-23.9% viscosity @ 25c 700-1400 cps color < 40...