PROBLEM TO BE SOLVED: To provide modified polybutadiene having comparatively large Tcp/MLwhich is an index of linearity of a molecule, and also excellent in cold flow characteristic.SOLUTION: There is provided modified polybutadiene in which a ratio (Tcp/ML) of a 5% toluene solution viscosity (Tcp) measured at 25°C to a Mooney viscosity (ML) at 100°C is 1.3 or higher and 5.0 or lower, and a molecular-weight distribution (Mw/Mn) is 2.0 or more and below 4, and cold flow velocity (CF) is 5.5 mg/min or less.SELECTED DRAWING: None

    【課題】本発明は、分子のリニアリティ(線状性)の指標であるTcp/ML1+4が比較的大きく、コールドフロー特性にも優れた変性ポリブタジエンを提供することを目的とする。【解決手段】 本発明は、25℃で測定した5%トルエン溶液粘度(Tcp)と100℃におけるムーニー粘度(ML1+4)との比(Tcp/ML1+4)が、1.3以上5.0以下であり、分子量分布(Mw/Mn)が、2.0以上4未満であり、コールドフロー速度(CF)が、5.5mg/min以下であることを特徴とする変性ポリブタジエンに関するものであります。【選択図】なし


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    Title :

    MODIFIED POLYBUTADIENE AND RUBBER COMPOSITION


    Additional title:

    変性ポリブタジエン、及びゴム組成物


    Contributors:
    SHIBA KOJI (author) / YAMADA YUTA (author) / MAEDA SHUICHI (author) / OKAMOTO NAOMI (author)

    Publication date :

    2017-07-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind



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