3,5-Ditertiary alkyl-4-hydroxyphenyl (alkyl) 6-acyloxy-4-thia hexanoates and hexenamides as antioxidants

Claim 1

A composition of matter stabilized against oxidative degradation which is comprised of: A. a polymer susceptible to oxidative degradation selected from the group consisting of natural rubber, homopolymers wherein the monomer is selected from the group consisting of mono-olefin monomers and diolefin monomers, and synthetic copolymers wherein at least one of the monomers is selected from the group consisting of monoolefin monomers and diolefin monomers; and B. from 0.001 to 10 parts by weight of the anti-oxidant having the following structural formula: ##STR17## wherein R and R 1 are radicals selected from the group consisting of tert. alkyl radicals having from 4 to 8 carbons, and cycloalkyl radicals having from 5 to 12 carbons; R 2 and R 3 are selected from the group consisting of H, and alkyl radicals having from 1 to 4 carbons; R 4 , R 5 , R 6 , R 7 and R 9 are selected from the group consisting of H and alkyl radicals having from 1 to 4 carbons; R 8 is selected from the group consisting of alkyl radicals having from 1 to 20 carbons, alkenyl radicals having from 12 to 20 carbons, cycloalkyl radicals having from 5 to 12 carbons, phenyl, substituted phenyl, and aralkyl radicals having from 7 to 12 carbon atoms; x, y or z equals 0 to 12; x + y + z≦ 12; m equals 0 or 1; n equals 0 to 3; and X is 0 or NH per 100 parts by weight of polymer.