To provide a rubber composition for tires capable of simultaneously achieving high hardness, high breaking strength, and low heat build-up properties.SOLUTION: The rubber composition for tires is obtained by blending 100 pts.mass of a diene rubber containing 50 pts.mass or more of at least one selected from the group consisting of a natural rubber and a synthetic isoprene rubber and 0-50 pts.mass of a styrene-butadiene copolymer rubber with: 60-90 pts.mass of carbon black having a nitrogen adsorption specific surface area (N2SA) of 25-85 m2/g; and 1-20 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】高硬度、高破断強度および低発熱性を同時に達成し得るタイヤ用ゴム組成物を提供する。【解決手段】天然ゴムおよび合成イソプレンゴムからなる群より選択された少なくとも1種を50質量部以上かつスチレン−ブタジエン共重合体ゴムを0〜50質量部含むジエン系ゴム100質量部に対し、窒素吸着比表面積(N2SA)が25〜85m2/gのカーボンブラックを60〜90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1〜20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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