Benzotriazol-UV-Absorptionsmittel mit erhöhter Haltbarkeit

摘要

Benzotriazole UV absorbers which are substituted at the 5-position of the benzo ring by an electron withdrawing group exhibit enhanced durability and very low loss rates when incorporated into automotive coatings. Some of the benzotriazoles are new and may be incorporated into any organic material, as stabilizers. The coating compositions are based on thermoset acrylic melamine resins, acrylic urethane resins, epoxy carboxy resins, silane modified acrylic melamine resins, acrylic resins with carbamate pendant groups crosslinked with melamine or acrylic polyol resins crosslinked with melamine containing carbamate groups.