HDI Low Viscosity Covesro XP2840 Characterization : Aliphatic polyisocyanate based on hexamethylene diisocyanate. As the hardener component for lightfast, weather-stable coating systems. Form supplied :100 % Characteristic data* Property Value Unit of measurement Method NCO content approx. 23.0 % DIN EN ISO 11 909 Viscosity at 23 °C approx. 500 mPa·s DIN EN ISO 3219/A.3 Color...