Viochem UV-328

2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol. Acts as highly effective light stabilizer for a variety of plastics and other organic substrates. Exhibits strong UV absorption, low initial color, excellent compatibility in a wide variety of substrates, good solubility in plasticizers and monomers as well as 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, as well as fibers during outdoor weathering.