HDI Diourea Covesro N75   ABOUT: Aliphatic polyisocyanate (HDI biuret).As the hardener component for lightfast polyurethane coating systems. Product Types： HDI PIC Aliphatic polyisocyanate Crosslinkers Polyisocyanate Hardeners Polyisocyanurate Isocyanate Material: Coatings, paints & inks：High functional, Weather resistant, Low viscous, Solventborne General Characterization: Aliphatic polyisocyanate (HDI biuret). As the hardener component for lightfast polyurethane coating systems....