PROBLEM TO BE SOLVED: To provide organopolysiloxane capable of achieving desired low fuel consumption property during manufacturing a tire and largely reducing hysteresis loss of a rubber composition cured article, a compound agent for rubber containing the organopolysiloxane, a rubber composition blended with the rubber compounding agent and a tire formed by using the rubber composition.SOLUTION: There is provided organopolysiloxane containing an organic group having a sulfide group represented by the following average composition formula (1) and having a sulfide chemical equivalent of 1,000 g/mol or less. (A)(B)(C)(R)SiO(1), where A is a sulfide group-containing bivalent organic group, B is a monovalent hydrocarbon group having 5 to 10 carbon atoms, C is a hydrolyzable group and/or a hydroxyl group, Ris a monovalent hydrocarbon group having 1 to 4 carbons, and a, b, c and d are 0<2a<1, 0<2 and 0<2a+b+c+d<4.SELECTED DRAWING: None

    【課題】タイヤ製造時に所望の低燃費性を実現し、ゴム組成物硬化物のヒステリシスロスを大幅に低下させることが可能なオルガノポリシロキサン、該オルガノポリシロキサンを含むゴム用配合剤、該ゴム用配合剤を配合してなるゴム組成物、及び該ゴム組成物を用いて形成されたタイヤを提供する。【解決手段】下記平均組成式(1)で表されるスルフィド基を有する有機基を含有し、かつスルフィド当量が1,000g/mol以下であることを特徴とするオルガノポリシロキサン。(A)a(B)b(C)c(R1)dSiO(4-2a-b-c-d)/2(1)(式中、Aはスルフィド基含有二価有機基であり、Bは炭素数5〜10の一価炭化水素基であり、Cは加水分解性基及び/又は水酸基であり、R1は炭素数1〜4の一価炭化水素基であり、a、b、c、dは、0<2a<1、0<b<1、0<c<3、0≦d<2、且つ0<2a+b+c+d<4である。)【選択図】なし


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    Title :

    ORGANOPOLYSILOXANE, COMPOUND AGENT FOR RUBBER, RUBBER COMPOSITION AND TIRE


    Additional title:

    オルガノポリシロキサン、ゴム用配合剤、ゴム組成物及びタイヤ


    Contributors:

    Publication date :

    2016-08-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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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