To provide a devulcanized rubber that exhibits good post-vulcanization physical properties, a rubber composition that contains the devulcanized rubber and has excellent workability, and a pneumatic tire including a rubber part obtained by vulcanizing and molding the rubber composition.SOLUTION: The present invention relates to a devulcanized rubber obtained by mixing a devulcanizing agent having an alkylsulfonamide group and a vulcanized rubber. The devulcanizing agent preferably contains a sulfonamide compound of an alkylamine having 12 or more carbon atoms. The rubber composition containing the devulcanized rubber has excellent workability, and the devulcanized rubber of the rubber composition has good post-vulcanization physical properties, so that they are suitable as a raw material for a pneumatic tire.SELECTED DRAWING: None

    【課題】良好な加硫後物性を示す脱硫ゴム、脱硫ゴムを含有し、加工性に優れたゴム組成物、およびゴム組成物を加硫成形してなるゴム部を備える空気入りタイヤを提供すること。【解決手段】アルキルスルホンアミド基を有する脱硫剤と加硫ゴムとを混合処理してなる脱硫ゴム。該脱硫剤が、炭素数12以上のアルキルアミンのスルホンアミド化合物であることが好ましい。該脱硫ゴムを含有するゴム組成物は加工性に優れ、かつ該ゴム組成物の加硫ゴムは加硫後物性に優れるため、空気入りタイヤの原料として好適である。【選択図】 なし


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    Title :

    DEVULCANIZED RUBBER, RUBBER COMPOSITION, AND PNEUMATIC TIRE


    Additional title:

    脱硫ゴム、ゴム組成物および空気入りタイヤ


    Contributors:

    Publication date :

    2023-07-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / 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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