To provide a rubber composition having good dispersibility of silica and low fuel consumption performance, and a pneumatic tire using the same.SOLUTION: The present invention relates to the rubber composition for tires, which contains: a rubber component containing 30 mass% or more of a styrene-butadiene rubber having an SiOR group (R is a hydrogen atom or a hydrocarbon group); silica having a nitrogen adsorption specific surface area of 210 m/g or more in an amount of 50 pts.mass or more based on 100 pts.mass of the rubber component; and at least one surfactant selected from the group consisting of a polyoxyalkylene alkenyl ether sulfate ester salt and a polyoxyalkylene alkyl ether sulfate ester salt. The silica and the surfactant are kneaded at the same time.SELECTED DRAWING: None

    【課題】良好なシリカの分散性、低燃費性能を有するゴム組成物、及びこれを用いた空気入りタイヤを提供する。【解決手段】SiOR基(Rは、水素原子又は炭化水素基)を有するスチレンブタジエンゴムを30質量%以上含むゴム成分と、窒素吸着比表面積が210m2/g以上のシリカをゴム成分100質量部に対して50質量部以上と、ポリオキシアルキレンアルケニルエーテル硫酸エステル塩、ポリオキシアルキレンアルキルエーテル硫酸エステル塩からなる群より選択される少なくとも1種の界面活性剤とを含み、上記シリカと上記界面活性剤とは、同一の時期にゴムと混練りされる、タイヤ用ゴム組成物に関する。【選択図】なし


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    Title :

    RUBBER COMPOSITION FOR TIRES, AND PNEUMATIC TIRE


    Additional title:

    タイヤ用ゴム組成物および空気入りタイヤ


    Contributors:
    TOMIZAKI YUKARI (author) / MIKI NAOYUKI (author) / KITAO AYAKA (author) / MORI SHOKO (author)

    Publication date :

    2019-10-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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