To provide a rubber composition having excellent processability and dispersibility of silica, a modified diene-based polymer and a method for producing the modified diene-based polymer.SOLUTION: There are provided: a rubber composition comprising a modified diene-based polymer having a group represented by the following formula (I) and a group represented by the following formula (II) and silica; a modified diene-based polymer; and a method for producing the same. In the formula (I), Xrepresents at least one selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, Xrepresents a hydrocarbon group, n3 represents 0 to 4, and Xrepresents at least one selected from the group consisting of a sulfone-based protecting group, a carbamate-based protecting group and -(R-O)-H. In the formula (II), Rrepresents a divalent hydrocarbon group, Rand Reach independently represent a monovalent hydrocarbon group, m1 is 1 to 3, m2 is 0 to 2, m1+m2 is 3 and Rrepresents a hydrogen atom or a hydrocarbon group.SELECTED DRAWING: None

    【課題】加工性、シリカの分散性に優れるゴム組成物、変性ジエン系重合体、及び、変性ジエン系重合体の製造方法の提供。【解決手段】下記式(I)で表される基、及び、下記式(II)で表される基を有する変性ジエン系重合体と、シリカとを含有する、ゴム組成物、変性ジエン系重合体及びその製造方法。式(I)中、X1は、窒素原子、酸素原子及び硫黄原子からなる群から選ばれる少なくとも1種を表し、X3は炭化水素基を表し、n3は0〜4を表し、X2はスルホン系保護基、カルバメート系保護基及び−(R−O)n4−Hからなる群から選ばれる少なくとも1種を表す。式(II)中、R1-1は2価の炭化水素基を表し、R1-2及びR1-3はそれぞれ独立に1価の炭化水素基を表し、m1は1〜3であり、m2は0〜2であり、m1+m2は3であり、R1-4は水素原子又は炭化水素基を表す。【選択図】なし


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    Titel :

    RUBBER COMPOSITION, MODIFIED DIENE-BASED POLYMER AND METHOD FOR PRODUCING MODIFIED DIENE-BASED POLYMER


    Weitere Titelangaben:

    ゴム組成物、変性ジエン系重合体及び変性ジエン系重合体の製造方法


    Beteiligte:

    Erscheinungsdatum :

    2019-05-23


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS