RUBBER COMPOSITION FOR TYRE TREADS AND TYRES

• Main Author: LABAUZE, GERARD
• Format: Patent
• Language: English; French; German
• Published: 07.01.2004
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; 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

The present invention relates to a cross-linkable or cross-linked rubber composition which is usable to constitute a tread of a tire, to such a tread having in particular improved wear resistance, and to a tire having improved endurance by incorporating this tread. A composition according to the invention is based on one or more diene elastomers, said composition comprising at least one hydrocarbon plasticizing resin in a quantity of from 5 phr to 35 phr which is miscible in said diene elastomer(s), having a glass transition temperature Tg of between 10° C. and 150° C. and a molecular weight of between 400 and 2000 g/mol; one or more of a majority diene elastomer having a Tg of between -65° C. and -10° C. present in a quantity between 50 phr and 100 phr, and one or more of a minority diene elastomer having a Tg of between -110° C. and -80° C. present in a quantity between 0 phr and 50 phr.