Rubber composition for tire treads

Rubber compositions for tire treads containing a rubber component containing at least 70 parts by weight of a styrene-butadiene rubber whose styrene content is 20 to 60%; 5 to 150 parts by weight of a powdery inorganic compound represented by formula (I) and having a particle size from 0.01 to 10 mu...

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Bibliographische Detailangaben
Hauptverfasser:	OHTA TOSHIYUKI, SAKIYAMA JUN, IWAFUNE SEIICHIRO, MATSUO KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON 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:	Rubber compositions for tire treads containing a rubber component containing at least 70 parts by weight of a styrene-butadiene rubber whose styrene content is 20 to 60%; 5 to 150 parts by weight of a powdery inorganic compound represented by formula (I) and having a particle size from 0.01 to 10 mum:in which M1 is at least one of Al, Mg, Ti, and Ca, or hydroxides or oxides thereof; and 5 to 170 parts by weight of carbon black having a nitrogen adsorption specific area of 80 to 280 m2/g and the total amount of the powdery inorganic compound and the carbon black is from 70 to 200 parts by weight. The amount of an extract obtained when extracting the rubber composition, after being vulcanized, with acetone and chloroform should be 30 to 270 parts by weight. Similar compositions containing silica are also disclosed.