Bayhydrol® A 2427 is an aqueous, hydroxyfunctional polyacrylate dispersion used in the formulation of fast-drying, waterborne two-component polyurethane primers and topcoats, as well as one-component coatings. This product has a non-volatile content (1 g/1 h/125°C, convection oven) of 41-44, a viscosity at 23°C, (D=ca.40s-1) of max. 100, and a pH (1:3 in demineralised water) of 8-9.
Bayhydrol® A 2427 is preferably combined with anionic hydrophilically
modified polyisocyanates such as Bayhydur® XP 2487/1 to formulate transparent and pigmented primers and topcoats. Topcoats based on Bayhydrol® A 2427 and Bayhydur® XP 2487/1 are characterized by their good chemical resistance properties, especially their resistance to discoloring liquids.
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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