Desmodur® VP LS 2371 is an aliphatic polyisocyanate prepolymer based on isophorone diisocyanate. It can be used as a binder for elastic coatings and surface compounds. This product has an NCO content of 3.7 ± 0.3%, a viscosity (23°C) 9,800 ± 2,500 mPa·s, and a monomer content of < 2.00%. Desmodur® VP LS 2371 can be combined with latent hardeners such as Hardener® VP LS 2959 in the formulation of moisture-curing coatings. It can also be used with, for example, Hardener® DT and other special NH-functional co-reactants in the formulation of elastic coatings and surface sealing compounds for structural protection. On account of the polyether structure of this product, the resultant films are largely resistant to hydrolysis. However, if used outdoors, suitable light stabilisers must be added to counter the effects of sunlight.
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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