Tire rubber composition

• Main Authors: FELLER, JEAN-MARIE, BRAUN, LOTHAR CLAUS, OZEL, FAHRI, TAHON, JULIA MARTINE FRANCOISE CLAUDINE, WELTER, CAROLIN ANNA, LINSTER, TOM DOMINIQUE
• Format: Patent
• Language: English; French; German
• Published: 26.06.2013
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

A rubber composition is disclosed comprising, based on parts by weight per 100 parts by weight rubber (phr): (A) elastomers comprising: (1) 65 to 90 phr of cis 1,4-polyisoprene rubber, (2) 5 to 25 phr of cis 1,4-polybutadiene rubber, (B) 1 to 8 phr of a salt of at least one fatty acid comprising the product of at least one of stearic, palmitic and oleic acid and at least one of zinc oxide, magnesium oxide and calcium carbonate; (C) 45 to 70 phr of a reinforcing filler; and (D) a curative for the rubber composition comprising sulfur and a sulfur cure accelerator comprising a combination of at least one of N-tertbutyl-2-benzothiazolesulfenamide and N-N-dicyclohexyl-2-benzothiazolesulfenamide with 1,6-bis(N,N-dibenzylthiocarbamoyldithio) hexane. Also, a tire tread comprising such a rubber composition is disclosed.