To provide a rubber composition capable of improving wear resistance performance and low fuel consumption performance in a well-balanced manner, and a pneumatic tire using the same.SOLUTION: The present invention relates to the rubber composition for tires which contains: a rubber component containing a first styrene-butadiene rubber having a weight average molecular weight of 1,000,000 or more, a second styrene-butadiene rubber having a weight average molecular weight of 100,000 or more and 400,000 or less, and a butadiene rubber having a weight average molecular weight of 400,000 or more and 1,000,000 or less; silica; a mercapto-based silane coupling agent; a sulfenamide-based vulcanization accelerator; a guanidine-based vulcanization accelerator; and a thiazole-based vulcanization accelerator.SELECTED DRAWING: None

    【課題】耐摩耗性能、低燃費性能をバランスよく改善できるゴム組成物、及びこれを用いた空気入りタイヤを提供する。【解決手段】重量平均分子量が100万以上の第1のスチレンブタジエンゴムと重量平均分子量が10万以上40万以下の第2のスチレンブタジエンゴムと重量平均分子量が40万以上100万以下のブタジエンゴムとを含むゴム成分と、シリカと、メルカプト系シランカップリング剤と、スルフェンアミド系加硫促進剤と、グアニジン系加硫促進剤と、チアゾール系加硫促進剤とを含む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:

    Publication date :

    2019-06-27


    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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