Polyalkylene glycol esters of hindered phenols substituted alkanoic acid

Abstract

Compounds of the formula: ##EQU1## WHEREIN X is oxygen or sulfur, a is an integer from 2 to 6, b is an integer from 3 to 40, and R is ##SPC1## Wherein R.sub.1 is an alkyl group of 1 to 8 carbon atoms, R.sub.2 is hydrogen or an alkyl group of 1 to 8 carbon atoms, and X is an integer from 0 to 6 Are useful as antioxidants for organic materials normally subject to oxidative deterioration, such as polyacetals, polypropylene, and nylon, in amounts of from about 0.005 to about 5% by weight of the composition.

Dependencies are inferred from the claim text.