| Desmodur® N 3900 | Covestro (formerly Bayer MaterialScience) 科思创 | Desmodur® N 3900 is a low-viscosity, aliphatic polyisocyanate resin based on hexamethylene diisocyanate, and can be used as the hardener for weather-stable coating systems. It has an NCO content of 23.5 ± 0.5% by wt., a monomeric HDI < 0.3%, a density of ...view more Desmodur® N 3900 is a low-viscosity, aliphatic polyisocyanate resin based on hexamethylene diisocyanate, and can be used as the hardener for weather-stable coating systems. It has an NCO content of 23.5 ± 0.5% by wt., a monomeric HDI < 0.3%, a density of approx. 1.15g/cm^3, and a viscosity at 23°C of 730 ± 100 mPa·s. Desmodur® N 3900 is used to formulate high-solids systems for automotive refinishing, transportation coating and plastics coating. view less |
