METHOD FOR PRODUCING VULCANIZED RUBBER COMPOSITION, VULCANIZED RUBBER COMPOSITION, AND STUDLESS TIRE USING SAME

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METHOD FOR PRODUCING VULCANIZED RUBBER COMPOSITION, VULCANIZED RUBBER COMPOSITION, AND STUDLESS TIRE USING SAME

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TAKENAKA MIKAKO / KOJIMA RYOJI

According to the process for preparing a vulcanized rubber composition of the invention comprising (a) a step of preparing a master batch comprising a modified conjugated diene polymer and silica, (b) a step of preparing a master batch comprising an isoprene rubber and silica, (c) a step of kneading the master batch obtained in (a) and the master batch obtained in (b), and (d) a step of vulcanizing a kneaded product obtained in (c), wherein the obtained vulcanized rubber composition comprises a phase A comprising a modified conjugated diene polymer and a phase B comprising an isoprene rubber, which are incompatible with each other, an abundance ratio ± of silica in the phase A satisfies 0.5¤±¤0.9 (Relation 1), and a proportion ² of the modified conjugated diene polymer satisfies 0.4¤²¤0.8 (Relation 2) it is possible to improve performance on ice and abrasion resistance and to provide a vulcanized rubber composition having excellent performance on ice and abrasion resistance, and a studless tire with a tread made using the same.

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Title :

METHOD FOR PRODUCING VULCANIZED RUBBER COMPOSITION, VULCANIZED RUBBER COMPOSITION, AND STUDLESS TIRE USING SAME

Additional title:

VERFAHREN ZUR HERSTELLUNG EINER GUMMIZUSAMMENSETZUNG, GUMMIZUSAMMENSETZUNG UND SPIKELOSER REIFEN DAMIT
PROCÉDÉ DE PRODUCTION DE COMPOSITION DE CAOUTCHOUC VULCANISÉ, COMPOSITION DE CAOUTCHOUC VULCANISÉ, ET PNEU SANS CLOUS L'UTILISANT

Contributors:

TAKENAKA MIKAKO (author) / KOJIMA RYOJI (author)

Publication date :

2019-09-18

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

C08J Verarbeitung , WORKING-UP / B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen