2-(benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alko xybenzyl)phenols and stabilized compositions

U.S. Patent Number: 5387691

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.

Inventors: Falk; Robert A. (New City, NY), Luzzi; John J. (Carmel, NY), Coughlin; Gregory R. (Poughkeepsie, NY)

Assignee: Ciba-Geigy Corporation (Ardsley, NY)

Application Number: 08/026,961

Issued: 1995-02-07

Expired: 2007-02-07

Classes: 548/257 ; 548/259; 548/260; 548/261

Field of search: 548/257,259,260,261

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