2-(2-Hydroxy-3,5-di-tert-octylphenyl)-2H-benzotriazole stabilized compositions
AssigneeCiba-Geigy Corporation
InventorsMartin Dexter, Roland A. E. Winter
Life of this patent
Estimating the term…
Abstract
2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.
Claims6
A composition of matter comprising an organic polymer, subject to light-induced deterioration, selected from the group consisting of thermoset acrylic resins, thermoplastic acrylic resins, alkyd/acrylic resins, alkyd resins and polycarbonates, stabilized with from 0.1 to 5% by weight of a compound of the formula ##STR4## wherein R.sub.1 is hydrogen or chloro, and R.sub.2 is tert-octyl.
A method of stabilizing an organic polymer, subject to light-induced deterioration, selected from the group consisting of thermoset acrylic resins, thermoplastic acrylic resins, alkyd/acrylic resins, alkyd resins and polycarbonates, which comprises incorporating in said material from 0.1 to 5% by weight of said material of a compound of the formula ##STR5## wherein R.sub.1 is hydrogen or chloro, and R.sub.2 is tert-octyl.
Dependencies are inferred from the claim text.