This invention relates to an aromatic vinyl compound-conjugated diene compound copolymer capable of giving excellent wear resistance and resistance to wet skid to a tire, and more particularly to an aromatic vinyl compound-conjugated diene compound copolymer obtained by an addition polymerization of an aromatic vinyl compound and a conjugated diene compound in the presence of a polymerization catalyst composition comprising at least one specified metallocene complex selected from the group consisting of a metallocene complex represented by the following general formula (I):
(wherein M is a lanthanoid element, scandium or yttrium, and CpR is independently a non-substituted or substituted indenyl, and Ra to Rf are independently an alkyl group having a carbon number of 1-3 or a hydrogen atom, and L is a neutral Lewis base, and w is an integer of 0-3) and so on, wherein a content of cis-1,4 bond in a conjugated diene compound portion is not less than 80%.
本发明涉及一种芳香族
乙烯基化合物-共轭二烯烃化合物共聚物,该共聚物能使轮胎具有优异的耐磨性和抗湿滑性,特别是涉及一种芳香族
乙烯基化合物-共轭二烯烃化合物共聚物,该共聚物是由芳香族
乙烯基化合物和共轭二烯烃化合物在聚合催化剂组合物存在下进行加成聚合而得到的,聚合催化剂组合物包括至少一种特定的茂
金属络合物,该茂
金属络合物选自由下式(I)表示的茂
金属络合物组成的组:
(其中 M 为
镧系元素、
钪或
钇,CpR 独立地为非取代或取代的
茚基,Ra 至 Rf 独立地为碳原子数为 1-3 的烷基或氢原子,L 为中性路易斯碱,w 为 0-3 的整数)等,其中共轭二烯化合物部分中顺式-1,4 键的含量不低于 80%。