2-(2-Hydroxyphenyl)-benztriazoles, their use as UV-absorbers and their preparation

摘要

The novel UV-absorbers are compounds of the formula <IMAGE> (I) 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-CH2CH2-O-. The UV-absorbers are used in particular for stabilising and improving lacquers and photographic material.