Sulfur vulcanized rubber containing a mixture of antioxidants, and process of obtaining same

Claim 1

SULFUR-VULCANIZED RUBBER OF THE CLASS CONSISTING OF NATURAL AND SYNTHETIC RUBBERS FROM THE CLASS CONSISTING OF HOMOPOLYMERS OF CONJUGATED DINES AND COPOLYMERS OF A CONJUGATED DIENE AND AN ETHYLENICALLY UNSATURATED MONOMER, WHICH RUBBER CONTAINS AN ANTIOXIDIZING AMOUNT OF BOTH (A) A COMPOUND HAVING THE COMPOSITION OF FORMULA I IN WHICH X AND Y ARE EACH AT LEAST ONE AND NOT GREATER THAN TWO, EACH R IS FROM THE CLASS CONSISTING OF ALKYL, ARALKYL AND CYCLOAKYL GROUPS CONTAINING NOT MORE THAN 16 CARBON ATOMS; THE HYDROXPHENYL GROUPS ARE SELECTED FROM THE CLASS CONSISTING OF 2-HYDROXY AND 4HYDROXY PHENYL, AND R1 IS FROM THE CLASS CONSISTING OF HYDROGEN AND ALKYL GROUPS OF ONE TO TEN CARBON ATOMS AND (B) A COMPOUND HAVING THE COMPOSITION OF FORMULA II IN WHICH R AND EACH R1 ARE FROM THE CLASS CONSISTING OF HYDROGEN AND -X AND -SX GROUPS IN WHICH X IS FROM THE CLASS CONSISTING OF ALKYL, CYCLOAKYL AND ARALKYL GROUPS CONTAINING ONE TO TWELVE CARBON ATOMS, AND UNSUBSTITUATED ARYL, HYDROCARBON-SUBSTITUATED ARYL AND HENZOTHIAZOLYL GROUPS, AT LEAST ONE R1 BEING HYDROGEN.