PHENOLIC ESTER ANTIOXIDANTS CONTAINING THIOL GROUPS

摘要

1510410 Phenolic ester thiols GOODYEAR TIRE & RUBBER CO 22 Dec 1976 53523/76 Heading C2C [Also in Division C3] The invention comprises compounds of the formulae and wherein p-C 6 H 2 R 1 R 2 and C 6 H 2 R 1 R 2 are p- and o-, m or p-phenylene radicals respectively each carrying two substitutents, R 1 and R 2 are H, (C 1 -C 10 ) alkyl, (C 5 -C 8 ) cycloalkyl, (C 7 -C 9 ) aralkyl or substituted or unsubstituted (C 6 -C 8 ) and radicals, m is 1 or 2, A -K-O-, -O-Z-O or -S-Z-O- wherein K is (C 1 -C 10 ) alkylene and Z is (C 2 -C 10 ) alkylene, B is -O-Z-O, and Y is -CO-, -O-, -S- or (C 1 -C 5 ) alkylene. They may be obtained by reacting phenols having reactive OH groups of the formulae and with ester forming compounds of the formula wherein E is H or (C 1 -C 3 ) alkyl. Acidic catalysts and solvents may be employed in this reaction. The products are useful as antioxidants for oxidizable organic polymers.