To provide a rubber composition for heavy duty tires which is excellent in balance of wear resistance of tires, fuel economy of tires, and workability, and to provide a heavy duty tire using the same.SOLUTION: The rubber composition for heavy duty tires contains: a rubber component containing a multi-component copolymer which contains a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit; and a filler containing carbon black. The content of the carbon black is 30 pts.mass or more and 60 pts.mass or less based on 100 pts.mass of the rubber component. The content of the carbon black in the filler is 52 mass% or more and 90 mass% or less.SELECTED DRAWING: None

    【課題】タイヤの耐摩耗性、低燃費性、及び作業性のバランスに優れる重荷重用タイヤ用ゴム組成物及びこれを用いた重荷重用タイヤを提供する。【解決手段】共役ジエン単位、非共役オレフィン単位、及び芳香族ビニル単位を含有する多元共重合体を含むゴム成分と、カーボンブラックを含む充填剤とを含み、前記カーボンブラックの含有量が、前記ゴム成分100質量部に対し、30質量部以上60質量部以下であり、前記充填剤中の前記カーボンブラックの含有量が52質量%以上90質量%以下である重荷重用タイヤ用ゴム組成物。【選択図】なし


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    Title :

    RUBBER COMPOSITION FOR HEAVY DUTY TIRES, AND HEAVY DUTY TIRE


    Additional title:

    重荷重用タイヤ用ゴム組成物及び重荷重用タイヤ


    Contributors:

    Publication date :

    2020-06-18


    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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