Phenol acetals

Abstract

Abstract Compounds of the general formula I ##STR1## in which R 1 and R 5 independently of one another denote hydrogen or lower alkyl, one of R 2 and R 3 denotes hydroxyl and the other denotes alkyl, cycloalkyl or aralkyl, R 4 denotes hydrogen or, if R 3 denotes hydroxyl, additionally also denotes alkyl, cycloalkyl or aralkyl, X denotes the direct bond, or a group ##STR2## wherein R 8 is hydrogen, alkyl, aralkyl or phenyl and R 9 is hydrogen, alkyl, aralkyl, phenyl or the group ##STR3## wherein R 1 -R 5 have the above meaning, of R 9 conjointly with R 8 is alkylene, Y denotes oxygen or sulfur, n denotes 1, 2, 3 or 4, R 6 denotes tha acid radical of an n-valent organic oxygen acid or, if n is equal to 1, additionally also denotes hydroxyl or, if n is equal to 2, additionally also denotes --O--, and R 7 denotes a lower alkyl group having 1 -3 carbon atoms, or, if n is equal to 1, additionally also denotes, conjointly with R 6 , a group Ia ##STR4## WHEREIN R 1 -R 5 , X and Y have the above meaning, or if n is equal to 1 and Y denotes oxygen, additionally also denotes, conjointly with R 6 , a group Ib ##STR5## wherein R 1 - R 5 and X have the above meaning, and R 10 is hydroxyl or the acid radical of a monovalent organic oxygen acid, for stabilising organic material.

Inventors

• 👤 Andreas Schmidt

Bibliographic Details