Bayhydrol® UH 2593/1 is an aliphatic, fatty acid-modified, anionic polyurethane dispersion that is a binder for the formulation of water-reducible coatings and sealers for wood and wood materials. This product has a non-volatile content (1g / 1h / 125°C) of 34-36, a viscosity at 23°C, (D=ca.100) of ≤ 250, and a pH (1:2.5in demineralised water) of 7-9.
The product was developed specifically for the formulation of one- and two-component wood coating systems. It is characterized by very good wet film transparency, high hardness and good black heel mark resistance. Post-curing of such coatings with Bayhydur® 305 or Bayhydur® 3100, for example, brings additional significant advantages and results in waterborne two-component coatings with even higher mechanical and chemical resistance. The mixing ratio of mill base to hardener solution is generally 10:1. The product is also suitable for use in a wide range of applications thanks to the combination of good application properties and good compatibility with cost-effective PAC dispersions.
Covestro (formerly Bayer MaterialScience) manufactures adhesive raw materials for use in the production of contact and heat-activated adhesives, as well as reactive and hot-melt adhesives for the transportation, furniture, footwear, packaging, and construction markets. Bayer offers a comprehensive range based on polyurethane and polychloroprene, with specialty raw materials that offer UV light and weather resistance.
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