RUBBER COMPOSITION FOR TREAD AND TIRE USING THE SAME

PROBLEM TO BE SOLVED: To provide a rubber composition for treads enabling rolling resistance to be reduced while enabling durability such as wear resistance and tear resistance to be improved. SOLUTION: The rubber composition for treads contains a softening agent having a glass transition temperatur...

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Bibliographische Detailangaben
1. Verfasser:	KAMO SHIGEKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES OR ARRANGEMENTS RELATED TO TYRES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE 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:	PROBLEM TO BE SOLVED: To provide a rubber composition for treads enabling rolling resistance to be reduced while enabling durability such as wear resistance and tear resistance to be improved. SOLUTION: The rubber composition for treads contains a softening agent having a glass transition temperature (Tg) of ≤-40°C and carbon black in a rubber ingredient containing natural rubber or natural rubber and at least one conjugated diene polymer. The carbon black is obtained with the use of a reaction apparatus in which a combustion gas generation zone, a reaction zone and a reaction stop zone are connected and by the steps of: generating a high-temperature combustion gas in the combustion gas generation zone; introducing a raw material by spraying into the reaction zone to form a carbon black-containing reactant gas flow; and quenching the reactant gas flow in the reaction stop zone by a means for multistage quenching-medium introduction to terminate the reaction. The carbon black in the means for multistage quenching-medium introduction has toluene discoloration satisfying specific relationships. COPYRIGHT: (C)2011,JPO&INPIT