product overview blocked aliphatic polyisocyanate (hdi homopolymer) supplied as a 75% solids solution in an aromatic solvent. product specifications (applicable to pont-de-claix, france and freeport, texas, usa products) chroma ≤ 40 hazen viscosity(25ºc) 2500 ~4000 mpa.s nco content (after unblocking) 11.2 ±0.5% solid content 75.0 ±2.0% freenco < 0.05 % physical properties appearance transparent liquid density@25℃ about 1060 kg/m3...