Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1987-11-13
1990-02-27
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C08K 534
Patent
active
049047124
ABSTRACT:
5-tert-Octyl-2-(2-hydroxy-3,5-di-alpha-cumylphenyl)-2H-benzotriazole and related 2H-benzotriazoles substituted on the 5-position of the benzo ring by a higher alkyl group such as tert-octyl or dodecyl exhibit 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. The above-named compounds exhibit good solubility in common organic solvents, and exhibit very high extinction coefficients.
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Seltzer Raymond
Winter Roland A. E.
Ciba-Geigy Corporation
Hall Luther A. R.
Kight John
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