PROBLEM TO BE SOLVED: To provide a rubber composition for the bead filler which is improved in rubber hardness and crack resistance at a higher level while reducing heat build-up.SOLUTION: A rubber composition for the bead filler comprises 50-80 pts. wt. of carbon black of a nitrogen adsorption specific surface area NSA of 25-95 m/g, 2-8 pts. wt. of a farnesene polymer and 5-20 pts. wt. of a thermosetting resin to 100 pts. wt. of a diene rubber and also contains 5-15 wt.%, relative to the wt. of the thermosetting resin, of a hardening agent.

    【課題】本発明は、発熱性を小さくしながら、ゴム硬度、耐クラック性を従来レベル以上に向上するようにしたビードフィラー用ゴム組成物を提供する。【解決手段】ジエン系ゴム100重量部に対し、窒素吸着比表面積N2SAが25〜95m2/gであるカーボンブラックを50〜80重量部、ファルネセン重合体を2〜8重量部、熱硬化性樹脂を5〜20重量部配合するとともに、硬化剤を前記熱硬化性樹脂の重量の5〜15重量%配合したことを特徴とする。【選択図】なし


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    Title :

    RUBBER COMPOSITION FOR BEAD FILLER


    Additional title:

    ビードフィラー用ゴム組成物


    Contributors:

    Publication date :

    2015-12-07


    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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