申请人:Ciba-Geigy Corporation
公开号:US05387691A1
公开(公告)日:1995-02-07
2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alkoxybenzyl)phenols am prepared by reacting a Mannich base of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a 2-hydroxy-4-alkoxybenzophenone. 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.
2-(苯并三唑-2-基)-4-烷基-6-(2-羟基-3-苯甲酰基-6-烷氧基苯甲基)酚是通过将2-(2-羟基-5-烷基苯基)-2H-苯并三唑的Mannich碱与2-羟基-4-烷氧基苯基酮反应而制备的。这种混合产物在保护有机基质免受光引起的恶化方面表现出卓越的功效,并且在加热稳定组合物的加工过程中,对挥发或渗出的损失具有良好的抵抗力。