2-(2-Hydroxyphenyl)-benztriazoles, their use as UV-absorbers and their preparation
First Claim
1. A compound of the formula I ##STR40## in which R1 is H, Cl or straight-chain or branched C1 -C4 alkyl and n is one of the numbers 1 or 2, in which,(a) when n=1, R2 is Cl or --OR3, and(b) when n=2, R2 is --O--R9 --O--, R3 is H, straight-chain or branched C1 -C18 alkyl which is unsubstituted or substituted by 1 to 3 OH groups or straight-chain or branched C3 -C18 alkyl which is interrupted by --O-- or --S-- and which can be unsubstituted or substituted by OH, C5 -C12 cycloalkyl which is unsubstituted or substituted by OH, straight-chain or branched C2 -C18 alkenyl which is unsubstituted or substituted by OH, C7 -C15 aralkyl, or ##STR41## R9 is C2 -C8 alkylene, C4 -C8 alkenylene, cyclohexylene, straight-chain or branched C4 -C10 alkylene which is interrupted by --O--, and R11 is straight-chain or branched C2 -C8 alkylene, straight-chain or branched C4 -C10 alkylene which is interrupted by --O--, cycloalkylene, arylene, ##STR42##
2 Assignments
0 Petitions
Accused Products
Abstract
The novel UV-absorbers are compounds of the formula ##STR1## in which R1 is, for example, hydrogen, n is one of the numbers 1 or 2 and R2 is an appropriate monovalent or divalent radical, for example --OH or --O--CH2 CH2 --O--. The UV-absorbers are used in particular for stabilising and improving lacquers and photographic material.
105 Citations
5 Claims
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1. A compound of the formula I ##STR40## in which R1 is H, Cl or straight-chain or branched C1 -C4 alkyl and n is one of the numbers 1 or 2, in which,
(a) when n=1, R2 is Cl or --OR3, and (b) when n=2, R2 is --O--R9 --O--, R3 is H, straight-chain or branched C1 -C18 alkyl which is unsubstituted or substituted by 1 to 3 OH groups or straight-chain or branched C3 -C18 alkyl which is interrupted by --O-- or --S-- and which can be unsubstituted or substituted by OH, C5 -C12 cycloalkyl which is unsubstituted or substituted by OH, straight-chain or branched C2 -C18 alkenyl which is unsubstituted or substituted by OH, C7 -C15 aralkyl, or ##STR41## R9 is C2 -C8 alkylene, C4 -C8 alkenylene, cyclohexylene, straight-chain or branched C4 -C10 alkylene which is interrupted by --O--, and R11 is straight-chain or branched C2 -C8 alkylene, straight-chain or branched C4 -C10 alkylene which is interrupted by --O--, cycloalkylene, arylene, ##STR42##
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5. A mixture of 2-[2-hydroxy-3-tert.-butyl-5(2-carbo-n-octyloxyethyl)-phenyl]-5-chlorobenztriazole and 2-{2-hydroxy-3-tert.-butyl-5-[2-carbo-(2-ethylhexyl)-oxyethyl]-phenyl}-5-chlorobenztriazole in a ratio by weight of 1:
- 1.
Specification