2-(2-Hydroxy-3-perfluoroalkylthiomethyl-5-alkylphenyl)-2H-benzotriazoles are prepared by reacting the Mannich base hydrohalide or quaternary salt of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a perfluoroalkyl mercaptan. The 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.
Synthesis and structural characterization of zinc complexes supported by amino-benzotriazole phenoxide ligands: Efficient catalysts for ring-opening polymerization of ε-caprolactone and β-butyrolactone
作者:Jia-Ying Li、Chen-Yu Li、Wan-Ju Tai、Chia-Her Lin、Bao-Tsan Ko
DOI:10.1016/j.inoche.2011.04.008
日期:2011.7
characterized. The reaction of ZnEt 2 with DEA BTP -H (1 equiv.) produces the tetra-coordinated dimeric zinccomplexes [(μ- C1DEA BTP)ZnEt ] 2 ( 1) and [(μ- C8DEA BTP)ZnEt ] 2 ( 2 ). Experimental results indicate that complex 1 catalyzes the ring-openingpolymerization of e-caprolactone and β-butyrolactone with good catalytic activities in a controlled character.
2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alkoxybenzyl)phenols are 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-(2-Hydroxy-3-perfluoroalkylthiomethyl-5-alkylphenyl)-2H-benzotriazoles are prepared by reacting the Mannich base hydrohalide or quaternary salt of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a perfluoroalkyl mercaptan. The 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-(2-hydroxy-3-perfluoroalkylthio-methyl-5-alkylphenyl)-2H-benzo triazoles, processes for preparing them and stabilized compositions thereof
申请人:CIBA-GEIGY AG
公开号:EP0582549A2
公开(公告)日:1994-02-09
2-(2-Hydroxy-3-perfluoroalkylthiomethyl-5-alkylphenyl)-2H-benzotriazoles are prepared by reacting the Mannich base hydrohalide or quaternary salt of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a perfluoroalkyl mercaptan. The 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.