Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1993-03-05
1995-02-07
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548259, 548260, 548261, C07D24920
Patent
active
053876911
ABSTRACT:
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.
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Coughlin Gregory R.
Falk Robert A.
Luzzi John J.
Ciba-Geigy Corporation
Hall Luther A. R.
Kilby Scalzo Catherine S.
Kovaleski Michele A.
Richter Johann
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