Disclosed is a novel transition metal compound which is used for forming a metallocene catalyst for olefin polymerization. Specifically disclosed is a novel transition metal compound represented by the general formula below which enables to form a metallocene catalyst that has a balanced reactivity with ethylene and a comonomer selected from α-olefins having 3-20 carbon atoms and enables to produce an α-olefin polymer having a high molecular weight. Also specifically disclosed are a catalyst for olefin polymerization containing such a transition metal compound, and a method for producing a propylene/ethylene-α-olefin block copolymer wherein such a catalyst is used.
本发明涉及一种新型的过渡
金属化合物,用于形成用于烯烃聚合的
金属茂催化剂。具体揭示了一种由下面的通式表示的新型过渡
金属化合物,该化合物能够形成具有与
乙烯和选择自3-20个碳原子的α-烯烃共聚单体平衡反应性的
金属茂催化剂,并且能够产生具有高分子量的α-烯烃聚合物。此外,还具体揭示了一种包含这种过渡
金属化合物的烯烃聚合催化剂和一种使用这种催化剂制备
丙烯/
乙烯-α-烯烃嵌段共聚物的方法。