Provided is a conjugated diene polymer which contains at least a conjugated diene monomer unit and which has three or more peaks in a molecular weight distribution curve as determined by GPC measurement. The peak top molecular weight of the final detection peak (Z) is 80,000-250,000 when the peak detected at the latest during GPC measurement in the molecular weight distribution curve is defined as the final detection peak (Z) and the peak having the maximum peak area among the remaining peaks other than the final detection peak (Z) is defined as the maximum peak (L). The silica adsorption rate of the polymer chain constituting the maximum peak (L) is less than 40%.

    本发明提供一种共轭二烯系聚合物,其至少含有共轭二烯单体单元,通过GPC测定得到的分子量分布曲线中的峰的数量为3个以上,在将上述分子量分布曲线中的GPC测定时最晚检测出的峰作为最终检测峰(Z)、将除了上述最终检测峰(Z)以外的剩余的峰中具有最大峰面积的峰作为最大峰(L)的情况下,上述最终检测峰(Z)的峰顶分子量为8万~25万,构成上述最大峰(L)的聚合物链对二氧化硅的吸附率小于40%。


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    Title :

    Conjugated diene polymer, rubber composition, crosslinked rubber product, and tire


    Additional title:

    共轭二烯系聚合物、橡胶组合物、橡胶交联物和轮胎


    Contributors:

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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