To provide an organopolysiloxane which gives a rubber composition that renders desired fuel-saving tires possible, the tires being excellent in terms of hardness, tensile property, rolling resistance, and wet gripping.SOLUTION: There is provided an organopolysiloxane represented by average composition formula (1). (R1)a(R2)b(OR3)c(R4)dSiO(4-2a-b-c-d)/2...(1). (In the formula, R1's each independently represent a sulfide group-containing divalent organic group, R2's each independently represent an aryl group having 6-10 carbon atoms or an aralkyl group having 7-10 carbon atoms, R3's each independently represent a hydrogen atom, an alkyl group having 1-20 carbon atoms, an aryl group having 6-10 carbon atoms, an aralkyl group having 7-10 carbon atoms, or an alkenyl group having 2-10 carbon atoms, R4's each independently represent an alkyl group having 1-12 carbon atoms, and a, b, c, and d indicate numbers satisfying 0<2a<1, 0<1, and 0<2a+b+c+d<4.)SELECTED DRAWING: None

    【課題】 硬度、引張特性、転がり抵抗およびウェットグリップ性に優れ、所望の低燃費タイヤを実現し得るゴム組成物を与えるオルガノポリシロキサンを提供すること。【解決手段】下記平均組成式(1)で表されるオルガノポリシロキサン。(R1)a(R2)b(OR3)c(R4)dSiO(4-2a-b-c-d)/2(1)(式中、R1は、それぞれ独立してスルフィド基含有二価有機基を表し、R2は、それぞれ独立して、炭素数6〜10のアリール基または炭素数7〜10のアラルキル基を表し、R3は、それぞれ独立して、水素原子、炭素数1〜20のアルキル基、炭素数6〜10のアリール基、炭素数7〜10のアラルキル基、または炭素数2〜10のアルケニル基を表し、R4は、それぞれ独立して炭素数1〜12のアルキル基を表し、a、b、cおよびdは、0<2a<1、0<b<1、0<c<3、0≦d<1、かつ0<2a+b+c+d<4を満たす数を表す。)【選択図】 なし


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    Titel :

    ORGANOPOLYSILOXANE, RUBBER COMPOSITION, AND TIRE


    Weitere Titelangaben:

    オルガノポリシロキサン、ゴム組成物およびタイヤ


    Beteiligte:

    Erscheinungsdatum :

    2021-09-09


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

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



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