hdi closed vencorex d2   description:  blocked aliphatic polyisocyanate (hdi homopolymer), supplied at 75 % solids in aromatic solvent. specifications: colour ≤40 hazen (apha) viscosity at 25°c 2500 – 4000 mpa.s nco (available after deblocking) 11.2 ±0.5 % solids content 75.0±2.0 % free nco < 0.2 % the analytical methods are available upon request physical properties: appearance...