To provide a rubber composition for tires capable of improving wet grip properties, low rolling resistance, and traveling properties on ice and snow roads of a tire in a well-balanced manner.SOLUTION: The rubber composition for tires according to the present invention contains a diene rubber, silica, and a silane compound represented by the following formula (1). The diene rubber contains at least one of an aromatic vinyl-conjugated diene copolymer rubber and a butadiene rubber. The total content of the aromatic vinyl-conjugated diene copolymer rubber and the butadiene rubber is 70 mass% or more of the whole diene rubber. The average glass transition temperature of the diene rubber is -100°C or higher and lower than -50°C.SELECTED DRAWING: Figure 1

    【課題】タイヤのウエットグリップ性、低転がり抵抗性、および氷雪路上走行性をバランス良く向上できるタイヤ用ゴム組成物の提供。【解決手段】本発明のタイヤ用ゴム組成物は、 ジエン系ゴムと、シリカと、下記式(1)で表されるシラン化合物とを含む、タイヤ用ゴム組成物であって、前記ジエン系ゴムが、芳香族ビニル−共役ジエン共重合体ゴムおよびブタジエンゴムの少なくとも1種を含み、前記芳香族ビニル−共役ジエン共重合体ゴムおよびブタジエンゴムの合計含有量が、前記ジエン系ゴム全体の70質量%以上であり、前記ジエン系ゴムの平均ガラス転移温度が、−100℃以上−50℃未満である。【選択図】図1


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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 :

    2021-04-08


    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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