PROBLEM TO BE SOLVED: To provide a rubber composition for a studless tire which improves on-ice performance, and a studless tire.SOLUTION: A tire has a tread part comprising the rubber composition for a studless tire which contains 100 pts.mass of a diene rubber and 1-25 pts.mass of a sucrose alkylene oxide fatty acid ester represented by formula (1) and which has a contact angle with water of 40° or more and less than 100°. (R-Rare each independently H or a C4-25 acyl group; AO is a C2-6 alkylene oxide; and n is an integer of 2-10.)SELECTED DRAWING: None

    【課題】氷上性能を改良するスタッドレスタイヤ用ゴム組成物及びスタッドレスタイヤ。【解決手段】ジエン系ゴム100質量部、式(1)で表されるショ糖アルキレンオキシド脂肪酸エステルを1〜25質量部を含み、かつ水に対する接触角が40〜100°未満であるスタッドレスタイヤ用ゴム組成物からなるトレッド部を有するタイヤ。(R1〜R8は各々独立してH又はC4〜25のアシル基;AOはC2〜6のアルキレンオキシド;nは2〜10の整数)【選択図】なし


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    Title :

    RUBBER COMPOSITION FOR STUDLESS TIRE, AND STUDLESS TIRE


    Additional title:

    スタッドレスタイヤ用ゴム組成物およびスタッドレスタイヤ


    Contributors:

    Publication date :

    2018-08-09


    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



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