PU coatings.An IPDI-based (isophorone diisocyanate Isophorone diisocyanate (IPDI) is an organic compound in the class known as isocyanates. More specifically, it is an aliphatic diisocyanate. It is produced in relatively small quantities, accounting for (with hexamethylene diisocyanate) only 3. ) hardener hardener, n an ingredient (potassium alum) of the photographic and radiographic fixing solution that serves to harden the gelatin of the film to prevent softening and swelling of the gelatin. designated Desmodur XP 2565, which is said to greatly reduce the solvent content of polyurethane coatings, has been developed. High-solids coatings are now said to be formulated with particularly fast drying properties, in Desmodur XP 2565, the company is said to have found another answer to the mounting demand for raw materials for low-solvent, high-solids polyurethane coatings. The market is said to be reacting to the stricter regulations that aim to reduce emissions of volatile organic compounds volatile organic compound Environment Any toxic cabon-based (organic) substance that easily become vapors or gases–eg, solvents–paint thinners, lacquer thinner, degreasers, dry cleaning fluids . Waterborne polyurethane systems are also becoming popular because of their environmental friendliness, according to the company. Due to its low viscosity, this hardener can be mixed with the aqueous phase aqueous phase n. The water portion of a system consisting of two liquid phases, one that is primarily water and a second that is a liquid immiscible with water. , but because it is not hydrophilically modified, it can be used to formulate aqueous coatings that are said to be particularly weather-stable and chemically resistant. Bayer MaterialScience Circle 51 on card |
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