To provide a rubber composition for tires excellent in wet grip performance at a low temperature, and a pneumatic tire using the same.SOLUTION: The rubber composition for tires contains a rubber component, silica, and a compound represented by the following formula (I), and the acetone extraction amount of the rubber composition is 16.0 mass% or more. (In the formula (I), R1 represents a hydrocarbon group; R2 and R3 are the same or different and each represent a hydrogen atom, a hydrocarbon group, or an -(AO)n-H group (n represents an integer of 1 or more, each n of R2 and R3 may be the same or different, and AO is the same or different and represents a C2 or higher oxyalkylene group); and at least one of R2 and R3 is an -(AO)n-H group.)SELECTED DRAWING: None

    【課題】低温でのウェットグリップ性能に優れたタイヤ用ゴム組成物、及びこれを用いた空気入りタイヤを提供する。【解決手段】ゴム成分と、シリカと、下記式(I)で表される化合物とを含み、アセトン抽出量が16.0質量%以上であるタイヤ用ゴム組成物。[化1]TIFF2023070526000013.tif21156(式(I)中、R1は、炭化水素基を表す。R2、R3は、同一若しくは異なって、水素原子、炭化水素基、又は-(AO)n-H基(nは1以上の整数を表し、R2、R3の各nは、それぞれ同一でも異なっていてもよい。AOは、同一又は異なって、炭素数2以上のオキシアルキレン基を表す。)を表し、R2、R3のうち少なくとも1つが-(AO)n-H基である。)【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 :

    2023-05-19


    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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