N-(substituted)- alpha -(3,5-dialkyl-4-hydroxyphenyl)- alpha , alpha -disubstituted acetamides, and composition stabilized therewith

摘要

N-(substituted)-1-(piperazinealkyl)- alpha -(3,5-dialkyl-4-hydroxyphenyl)- alpha , alpha -disubstited acetamides, are novel compounds prepared by a novel modification of the ketoform process. The compounds are useful as stabilizers for organic materials subject to degradation in an environment in which the materials are exposed to heat, oxidation and light, particularly ultraviolet light. The compounds are especially useful in combination with known secondary stabilizers.