Viochem UV-327

2,4-di-tert-butyl-6-(5-chlorobenzotriazol-2-yl)phenol. Acts as highly effective light stabilizer for a variety of plastics and other organic substrates. Due to its red-shifted UV absorption, it is particularly suited for use in the stabilization of polymers that are especially sensitive to long-wavelength UV radiation (e.g. polyurethanes, polyphenylene sulfide) and in certain applications where very low transmission of long-wavelength UV radiation is required (e.g. optical lenses). Possesses excellent compatibility in a wide variety of substrates, and moderately low volatility. Protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering.