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 α of silica in the BR phase satisfies 0.3≦α≦0.7 (Relation 1), and a proportion β of the butadiene rubber satisfies 0.4≦β≦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 :

    PROCESS FOR PREPARING VULCANIZED RUBBER COMPOSITION, VULCANIZED RUBBER COMPOSITION AND STUDLESS TIRE USING SAME


    Contributors:

    Publication date :

    2017-11-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08J Verarbeitung , WORKING-UP




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