To provide a vulcanized rubber having a large tanδ at 0°C and a pneumatic tire having the vulcanized rubber as a rubber part and having excellent WET performance.SOLUTION: There are provided: a rubber composition containing a diene-based rubber and a liquid crystal polymer, wherein the liquid crystal polymer is a reaction product of a mesogen group-containing compound having at least an active hydrogen group, an isocyanate compound and a polyfunctional hydroxyl group-containing compound, the polyfunctional hydroxyl group-containing compound is a compound having a long-chain hydroxyl group in which an alkylene oxide is added to at least a part of the hydroxyl group; a vulcanized rubber obtained by vulcanizing and molding the rubber composition; and a pneumatic tire having the vulcanized rubber as a rubber part.SELECTED DRAWING: None

    【課題】0℃でのtanδが大きい加硫ゴム、該加硫ゴムをゴム部として備え、WET性能に優れた空気入りタイヤを提供すること。【解決手段】ジエン系ゴムと、液晶ポリマーとを含有するゴム組成物であって、液晶ポリマーが、少なくとも活性水素基を有するメソゲン基含有化合物と、イソシアネート化合物と、多官能水酸基含有化合物との反応物であり、多官能水酸基含有化合物が、水酸基の少なくとも一部にアルキレンオキシドが付加した長鎖水酸基を有する化合物であるゴム組成物、該ゴム組成物を加硫成形してなる加硫ゴム、および該加硫ゴムをゴム部として備える空気入りタイヤ。【選択図】 なし


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    Title :

    RUBBER COMPOSITION, VULCANIZED RUBBER AND PNEUMATIC TIRE


    Additional title:

    ゴム組成物、加硫ゴムおよび空気入りタイヤ


    Contributors:

    Publication date :

    2024-07-09


    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 / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind



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