Tyre comprising a rubber composition based on epoxidized polyisoprene

The present invention relates to a tyre comprising a rubber composition which improves the compromise between the stiffness in the cured state and the hysteresis of the composition, which composition comprises: - from more than 50 to 100 phr of polyisoprene containing an epoxidized polyisoprene havi...

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Bibliographische Detailangaben
Hauptverfasser:	Joseph, Aurélie, Petitjean, Laurent
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The present invention relates to a tyre comprising a rubber composition which improves the compromise between the stiffness in the cured state and the hysteresis of the composition, which composition comprises: - from more than 50 to 100 phr of polyisoprene containing an epoxidized polyisoprene having a molar degree of epoxidation ranging from 5% to less than 50%, - a carbon black, - a crosslinking system, the epoxidized polyisoprene being an epoxidized natural rubber or an epoxidized synthetic polyisoprene having a molar content of cis-1,4 bonds of at least 90% before epoxidation, or a mixture thereof, with the proviso that, if the epoxidized polyisoprene is an epoxidized polyisoprene having a molar degree of epoxidation of from 5% to 25%, the rubber composition contains more than 50 phr of epoxidized polyisoprene, said composition being free of silica.