To provide a rubber composition for tires which has good processability and is capable of improving wet grip performance while suppressing deterioration in low heat build-up performance.SOLUTION: The rubber composition for tires according to an embodiment contains 1-50 pts.mass of a partially hydrogenated polystyrene resin having a hydrogenation rate of 35-80% and 50-150 pts.mass of silica based on 100 pts.mass of a diene rubber component containing a styrene-butadiene rubber having a glass transition temperature of -50°C or higher. A pneumatic tire according to an embodiment is manufactured using the rubber composition for tires.SELECTED DRAWING: None

    【課題】加工性が良く、また低発熱性能の悪化を抑えながらウェットグリップ性能を向上することができるタイヤ用ゴム組成物を提供する。【解決手段】実施形態に係るタイヤ用ゴム組成物は、ガラス転移温度が−50℃以上のスチレンブタジエンゴムを含むジエン系ゴム成分100質量部に対して、水添率が35〜80%の部分水添ポリスチレン樹脂1〜50質量部と、シリカ50〜150質量部を含むものである。実施形態に係る空気入りタイヤは、該タイヤ用ゴム組成物を用いて作製されたものである。【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及び空気入りタイヤ


    Contributors:

    Publication date :

    2020-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / 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



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