type fat polyisocyanate(low viscosity hdi trimer) form of supply none solvent purpose in as curing agent component in light-resistant polyurethane coating system product specifications arial”>about158 features value measurement unit method ncocontent 23.0±0.5 % din en iso 11909 viscosity@23°c 1200±300 mpa·s din en iso 3219/a.3 °c din 53 213/1 density@20°c about 1.16 g/ml din en iso 2811...