Desmodur® MT is a polyisocyanate prepolymer based on diphenylmethane diisocyanate, and is used as a stabilizer for pigmented moisture-curing aromatic one-pack polyurethane coatings. This product has an equivalent weight of approx. 250, a flash point of approx. 217°C, and a density at 20°C of approx. 1.13g/ml.
Desmodur® MT reacts with water to release carbon dioxide. It serves as a dewatering agent to ensure the storage stability of moisture-curing pigmented one-component polyurethane coatings. The stoichiometric conversion of 1g of water requires approx. 28 g of Desmodur® MT. Trials and experience have shown that the best results are obtained using two or three times this amount. The reactivity of Desmodur® MT with water is comparable with the reactivity of the Desmodur® E grades.
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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