Desmodur® E 1660 is an aromatic polyisocynate prepolymer based on toluene diisocyanate. It can be used in the formulation of fast-drying, moisturecuring one-component polyurethane coatings and as the hardener for two-component polyurethane coatings. This product has an NCO content of 5.3 ± 0.3%, a viscosity at 23°C of 1,600 ± 800 mPa·s, and a monomeric TDI of < 0.5%, and a non-volatile content of 60.0 ± 2.0%.
Desmodur® E 1660 is suitable for the formulation of one-component transparent wood finishes, e.g. for parquet, furniture and wall and ceiling paneling. It can also be used as the hardener for two-component coatings. Films based on Desmodur® E 1660 may tear under tough service conditions. Combination with e.g. Desmodur® E 14 or Desmodur® E 1361 is therefore recommended. The ratios must be determined empirically.
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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