PROBLEM TO BE SOLVED: To provide a method of producing a modified diene polymer, capable of providing the modified diene polymer which can be formed as a rubber composition excellent in low loss property when used with a reinforced filler.SOLUTION: The method of producing a modified diene polymer in a first embodiment is provided that comprises: a step of producing a diene polymer including 1,3-butadiene; and a step of modifying the diene polymer by mixing a tetrazine-based compound which is at least one kind selected from among 3,6-di(2-pyridyl-1,2,4,5-tetrazine and 3,6-di(4-pyridyl)-1,2,4,5-tetrazine of 0.01 to 2.5 pts.mass with 100 pts.mass of the produced diene polymer, and then heating them. The method of producing a modified diene polymer in a second embodiment is provided that is identical to the method in the first embodiment except that the diene polymer further includes an aromatic vinyl compound, preferably styrene.SELECTED DRAWING: None

    【課題】補強性充填材とともに用いた際に、低低ロス性に優れたゴム組成物とすることが可能な、変性ジエン系重合体を得ることができる、変性ジエン系重合体の製造方法の提供。【解決手段】1,3−ブタジエンを含むジエン系重合体を製造する工程と、製造された前記ジエン系重合体100質量部に対して、3,6−ジ(2−ピリジル)−1,2,4,5−テトラジン及び3,6−ジ(4−ピリジル)−1,2,4,5−テトラジンから選択される少なくとも一種であるテトラジン系化合物を0.01〜2.5質量部を混合した後、加熱して、前記ジエン系重合体を変性する工程とを具えた変性ジエン系重合体の製造方法。前記ジエン系重合体が更に芳香族ビニル化合物、好ましくはスチレンを含む、変性ジエン系共重合体の製造方法。【選択図】なし


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    Title :

    METHOD OF PRODUCING MODIFIED DIENE POLYMER, MODIFIED DIENE POLYMER, RUBBER COMPOSITION AND TIRE


    Additional title:

    変性ジエン系重合体の製造方法、変性ジエン系重合体、ゴム組成物及びタイヤ


    Contributors:

    Publication date :

    2018-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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