According to the process for preparing a vulcanized rubber composition of the invention comprising (a) a step of preparing a master batch comprising a butadiene rubber 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 BR phase and a IR phase, which are incompatible with each other, a predetermined abundance ratio ± of silica in the BR phase satisfies 0.3¤±¤0.7 (Relation 1), and a proportion ² of the butadiene rubber 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.
PROCESS FOR PREPARING VULCANIZED RUBBER COMPOSITION, VULCANIZED RUBBER COMPOSITION, AND STUDLESS TIRE USING SAME
VERFAHREN ZUR HERSTELLUNG EINER GUMMIZUSAMMENSETZUNG, GUMMIZUSAMMENSETZUNG UND SPIKELOSER REIFEN DAMIT
PROCÉDÉ DE PRODUCTION D'UNE COMPOSITION DE CAOUTCHOUC VULCANISÉ, COMPOSITION DE CAOUTCHOUC VULCANISÉ, ET PNEU SANS CLOUS L'UTILISANT
2020-07-08
Patent
Elektronische Ressource
Englisch
IPC: | C08J Verarbeitung , WORKING-UP / B60C VEHICLE TYRES , Fahrzeugreifen / 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 |
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