To provide a rubber composition which is capable of producing a vulcanized rubber excellent in gas barrier properties and is excellent in stretchability, and to provide an inner liner rubber and a tire excellent in gas barrier properties.SOLUTION: The rubber composition contains: a rubber component; a reinforcing filler containing two or more kinds of carbon black including carbon black having a nitrogen adsorption specific surface area of 130 m/g or more; and a layered or plate-like mineral having an aspect ratio of 3-30. The ratio (a:b) of the content a of the mineral to the content b of the carbon black having a nitrogen adsorption specific surface area of 130 m/g or more is 100:5-100:50 on a mass basis. The average particle diameter of the mineral is 60 times or more the average particle diameter of the carbon black having a nitrogen adsorption specific surface area of 130 m/g or more.SELECTED DRAWING: None

    【課題】ガスバリア性に優れる加硫ゴムを製造することができ、かつ、延伸性に優れるゴム組成物、並びに、ガスバリア性に優れるインナーライナーゴム及びタイヤを提供する。【解決手段】ゴム成分と、窒素吸着法比表面積が130m2/g以上のカーボンブラックを含む2種以上のカーボンブラックを含有する補強性充填材と、アスペクト比が3〜30である層状または板状の鉱物とを含み、前記鉱物の含有量aと前記窒素吸着法比表面積が130m2/g以上のカーボンブラックの含有量bとの比(a:b)が、質量基準で100:5〜100:50であり、前記鉱物の平均粒子径が、前記窒素吸着法比表面積が130m2/g以上のカーボンブラックの平均粒子径の60倍以上であるゴム組成物。【選択図】なし


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    Title :

    RUBBER COMPOSITION, INNER LINER RUBBER, AND TIRE


    Additional title:

    ゴム組成物、インナーライナーゴム、及びタイヤ


    Contributors:

    Publication date :

    2019-06-27


    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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