申请人:Bando Fumiaki
公开号:US20140350201A1
公开(公告)日:2014-11-27
Conjugated diene polymer comprising at least a conjugated diene monomer unit, the conjugated diene polymer has a number-average molecular weight (Mn) in terms of polystyrene of 1,000 to 1,000,000, a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of lower than 2.0 and the polymer bears a halogen atom at a terminal of the polymer chain. Method for producing the conjugated diene polymer comprises subjecting a monomer containing at least a conjugated diene to living radical polymerization using a polymerization initiator comprising a halogenocyclopentadienyl triorganophosphine η
2
-olefin ruthenium complex represented by formula (6) (and an organic halide.
共轭二烯聚合物包括至少一个共轭二烯单体单元,该共轭二烯聚合物的聚合度数平均分子量(Mn)以聚苯乙烯为单位为1,000至1,000,000,重均分子量(Mw)与数均分子量(Mn)之比小于2.0,并且该聚合物在聚合物链的末端带有卤素原子。制备该共轭二烯聚合物的方法包括使用聚合引发剂将至少含有一个共轭二烯的单体进行活性自由基聚合,所述聚合引发剂包括一个卤代环戊二烯基三有机膦η2-烯烃钌配合物,其化学式为(6)(和一个有机卤化物)。