RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE

Provided are: a rubber composition for tire treads which gives tires excellent in terms of wet performance, rolling performance, and dry driving stability performance; and a pneumatic tire obtained using the rubber composition for tire treads. The rubber composition for tire treads of the present in...

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Bibliographische Detailangaben
Hauptverfasser:	SAWA, Hideaki, ASHIURA, Makoto, SATO, Masaki, KAZARIYA, Ayaki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS RELATED TO TYRES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS 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:	Provided are: a rubber composition for tire treads which gives tires excellent in terms of wet performance, rolling performance, and dry driving stability performance; and a pneumatic tire obtained using the rubber composition for tire treads. The rubber composition for tire treads of the present invention comprises conjugated-diene-based rubbers comprising 30 mass% or more specific conjugated-diene-based rubber produced by a method for conjugated-diene-based-rubber production, the method including a specific step, and 20 mass% or more styrene/butadiene rubber, a given amount of silica, and a given amount of a silane coupling agent, wherein the specific conjugated-diene-based rubber has a content of aromatic vinyl monomer units of 20-80 mass%, includes conjugated-diene monomer units, which have a vinyl bond content of 20-80 mass%, and has a glass transition temperature and a weight-average molecular weight that are within given ranges.