RUN-FLAT TIRE RUBBER COMPOSITION AND RUN-FLAT TIRE

The present invention relates to a rubber composition for run flat tires, containing a rubber component; a low-molecular weight conjugated diene-based polymer having a weight average molecular weight of 10,000 to 40,000 as expressed in terms of polystyrene in an amount of 0.5 to 5 parts by mass base...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	OISHI, Shigeki
Format:	Patent
Sprache:	eng ; fre ; ger
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 rubber composition for run flat tires, containing a rubber component; a low-molecular weight conjugated diene-based polymer having a weight average molecular weight of 10,000 to 40,000 as expressed in terms of polystyrene in an amount of 0.5 to 5 parts by mass based on 100 parts by mass of the rubber component; and sulfur, with a ratio of the content of sulfur to the content of the low-molecular weight conjugated diene-based polymer (sulfur/low-molecular weight conjugated diene-based polymer) being 1.8 or more, from which a run flat tire with improved run flat durability and ride comfort is obtained. The run flat tire includes a sidewall section having a side reinforcing rubber layer formed from the rubber composition for run flat tires, a tread, a carcass, a bead core, and a bead filler.