2-(BENZOTRIAZOL-2-YL)-4-ALKYL-6-(2-HYDROXY-3-BENZOYLBENZYL) PHENOLS AND STABILIZED COMPOSITIONS

摘要

2-(BENZOTRIAZOL-2-YL)-4-ALKYL-6-(2-HYDROXY-3-BENZOYL-BENZYL)PHENOLS AND STABILIZED COMPOSITIONS 2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-benzyl)phenols are prepared by reacting a Mannich base of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a2-hydroxy-benzophenone. The hybrid products exhibit outstanding efficacy in protecting organic substrates from light-induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.