To provide a rubber composition for a tire suitable for a tread rubber for a tire for winter, and improved in puncture resistance.SOLUTION: A rubber composition for a tire contains: a styrenic elastomer-containing elastomer component; and a short fibrous resin D in which a ratio (A/B) of a length A of a cross section in a major axis direction in the cross section perpendicular to a long axis direction to a length B of the cross section in a minor diameter direction perpendicular to the major axis direction is larger than 2. In the elastomer component, a percentage content of the butadiene rubber is 0-60 mass%, and a percentage content of the styrenic elastomer is 10-60 mass%, and a styrene content is 0.8-11 mass% based on the total amount of the butadiene rubber and the styrenic elastomer.SELECTED DRAWING: Figure 1

    【課題】冬用タイヤのトレッドゴムに好適で、耐破壊性を向上させたタイヤ用ゴム組成物を提供する。【解決手段】スチレン系エラストマーを含むエラストマー成分と、長軸方向に垂直な断面における長径方向の前記断面の長さA及び前記長径方向に垂直な短径方向の前記断面の長さBとの比(A/B)が2より大きい短繊維状樹脂Dと、を含み、前記エラストマー成分中の、ブタジエンゴムの含有率が0~60質量%で、前記スチレン系エラストマーの含有率が10~60質量%であり、前記ブタジエンゴム及び前記スチレン系エラストマーの総量に対して、含有されるスチレン量が0.8~11質量%であることを特徴とする、タイヤ用ゴム組成物である。【選択図】図1


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    Title :

    RUBBER COMPOSITION FOR TIRE, TREAD RUBBER, AND TIRE FOR WINTER


    Additional title:

    タイヤ用ゴム組成物、トレッドゴム及び冬用タイヤ


    Contributors:

    Publication date :

    2022-05-11


    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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