Desmodur® PC-N is a modified diphenyl-methane-4,4'-diisocyanate (MDI) that is liquid at room temperature and is suitable for combination with Baycoll® in the formulation of adhesives. It is a solvent-free, colourless to yellowish liquid of low viscosity at temperatures above 15°C that crystallizes at lower temperatures. It has an NCO content of 26.0 ± 1.0%, a vapor pressure at 20°C (MDI) of < 10^-5 hPa, and a density 25°C of 1.22g/cm^3. Desmodur® PC-N can be combined with Baycoll in the formulation of adhesives for bonding many materials, e.g. wood, metal and plastics. Desmodur® PC-N is particularly suitable for combining with Baycoll® in the formulation of reactive two-component adhesives and moisture-curing one-component adhesives. On account of the vapour pressure of MDI, especially at elevated temperatures, adhesives with free isocyanate groups can only be handled in work areas with adequate extraction.
Covestro (formerly Bayer MaterialScience) provides raw materials, such as waterborne adhesives, major high solids coatings, advanced powder coatings, and specialty sealant chemistries. Bayer produces polycarbonates and polycarbonate blends, polyurethanes, and TPU resins, particularly for design and processing parts with TPU resins applications; helping products in a wide variety of applications look better and last longer.
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