To provide a tire rubber composition that makes it possible to obtain a crosslinked rubber composition having a high dynamic storage elastic modulus without sacrificing workability, provide a rubber additive added to the rubber composition and the rubber additive composition, and provide a tire rubber product and a tire including the rubber composition or crosslinked rubber composition.SOLUTION: A tire rubber composition contains a rubber component, a vulcanizer, and a compound represented by the following formula (I). (In formula (I), Ris a hydrogen atom, -C(=O)-OR, -OR, or -C(=O)-R, R-Rindependently represent a C1-22 hydrocarbon group, R-Rindependently represent a hydrogen atom or a hydroxy group, at least two of R-Rare hydroxy groups).SELECTED DRAWING: None

    【課題】加工性を不良とすることなく、高い動的貯蔵弾性率を有する架橋ゴム組成物が得られるタイヤ用ゴム組成物を提供することである。また、前記ゴム組成物に添加するゴム用添加剤及び該ゴム用添加剤組成物を提供することである。更に、前記ゴム組成物又は架橋ゴム組成物を用いたタイヤ用ゴム製品及びタイヤを提供することである。【解決手段】ゴム成分、加硫剤、及び下記式(I)で表される化合物を配合してなるタイヤ用ゴム組成物。(式(I)中、R1は水素原子、−C(=O)−ORa、−ORb、又は−C(=O)−Rcを表し、Ra〜Rcはそれぞれ独立に炭素数1〜22の炭化水素基を表し、R2〜R4はそれぞれ独立に水素原子又は水酸基を表し、R2〜R4の少なくとも2つは水酸基である。)【選択図】なし


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    Title :

    RUBBER ADDITIVE, RUBBER ADDITIVE COMPOSITION, TIRE RUBBER COMPOSITION, TIRE CROSSLINKED RUBBER COMPOSITION, AND TIRE RUBBER PRODUCT, AND TIRE


    Additional title:

    ゴム用添加剤、ゴム用添加剤組成物、タイヤ用ゴム組成物、タイヤ用架橋ゴム組成物、タイヤ用ゴム製品、及びタイヤ


    Contributors:

    Publication date :

    2020-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / B60C VEHICLE TYRES , Fahrzeugreifen



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