type hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate form of supply none solvent-based purpose curing agent for waterborne two-component polyurethane coating   product specifications features value measurement unit method ncocontent 16.2 ±0.4 % din en iso 11 909 viscosity@ 23℃ 6,500 ±1,500 mpa ·s din en iso 3219 hazencolor value span> ≤ 150 din en 1557 isocyanate monomer content < 0.15...