Rubber composition for tire including a novel anti-oxidant system

US8833417B2 · kind B2 · utility

Assignees

• MICHELIN RECHERCHE ET TECHNIQUE S.A. · CH
• COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN · FR

Inventors

• José Carlos Araujo Da Silva · Pont du Château, FR
• Arnaud Remy · Pont-du-Château, FR

Key dates

• Filing date: May 14, 2009
• Grant date: Sep 16, 2014
• Expiry date: Dec 14, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T152/1081
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Rubber composition, especially for a tire, based on at least one diene elastomer, a reinforcing filler, a crosslinking system and an antioxidant system, wherein said antioxidant system comprises at least two antioxidants “A” and “B”:A. an N-alkyl-N′-phenyl-para-phenylenediamine corresponding to the formula (I):B. a 4,4′,4″-tris(alkylamino)triphenylamine corresponding to the formula (II):in which formulae, R1, R2, R3 and R4, which are identical or different, each represent a linear or branched alkyl group having from 1 to 12 carbon atoms or a cycloalkyl group having from 5 to 8 carbon atoms, the A/B weight ratio being between 0.1 and 5.0.