Tinuvin 328 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol 25973-55-1 Ciba Light stabilizer / UV-absorber >> Benzotriazole Alkyd Resins Architectural / Decorative >> Do-it-yourself Automotive OEM Automotive refinishing General Industrial /Maintenance Wood & Furniture Coatings TINUVIN 328 is a UV absorber of the hydroxyphenylbenzotriazole class designed for coatings. Because of its extended UV absorption, TINUVIN 328 provides efficient protection to coatings and light sensitive substrates. TINUVIN 328 is recommended for applications such as: automotive coatings industrial coatings trade sale paints such as wood stains or do-it-yourself paints. TINUVIN 328 may be used in combination with a light stabilizer of the sterically hindered amine or aminoether class (HALS) such as recommended below. These combinations give coatings superior protection against gloss reduction, cracking, blistering, delamination and color change. TINUVIN 328 is only recommended for ambient and low temperature cured systems, i.e. air drying alkyd based systems. The amount of TINUVIN 328 required for optimum performance should be determined in trials covering a concentration range. Hydroxyphenylbenzotriazole. Used as a UV absorber for ambient and low temperature cured systems, such as air drying alkyd based systems for automotive and industrial coatings and trade sale paints such as wood stains or do-it-yourself paints. Offers extended UV absorption and efficient protection. Can be used in combination with a light stabilizer of the sterically hindered amine or aminoether class (HALS) to give superior protection against gloss reduction, cracking, blistering, delamination and color change.