To provide a rubber composition for tires capable of simultaneously improving heat build-up properties, breaking strength, and wear resistance while increasing a vulcanization rate.SOLUTION: The rubber composition for tires is obtained by blending 100 pts.mass of a diene rubber containing 65-100 pts.mass of a styrene-butadiene copolymer rubber and 0-35 pts.mass of a butadiene rubber with: 50-200 pts.mass of silica having a CTAB specific surface area of 200-300 m2/g; and 0.5-20 pts.mass of a phenolic resin having at least one ethyleneamine-derived structural unit represented by -(NH-C2H4)- in the molecule.SELECTED DRAWING: None

    【課題】加硫速度を向上させながら、発熱性、破断強度および耐摩耗性を同時に改善し得るタイヤ用ゴム組成物を提供する。【解決手段】スチレン−ブタジエン共重合体ゴムを65〜100質量部かつブタジエンゴムを0〜35質量部含むジエン系ゴム100質量部に対し、CTAB比表面積が200〜300m2/gであるシリカを50〜200質量部、および分子中に−(NH−C2H4)−で表されるエチレンアミン由来の構造単位を少なくとも1個以上有するフェノール樹脂を0.5〜20質量部配合してなるタイヤ用ゴム組成物によって、上記課題を解決した。【選択図】なし


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    Title :

    RUBBER COMPOSITION FOR TIRES AND TIRE USING THE SAME


    Additional title:

    タイヤ用ゴム組成物およびそれを用いたタイヤ


    Contributors:

    Publication date :

    2021-10-14


    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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