The invention relates to a metallocene complex according to formula I
wherein
M is a metal selected from lanthanides or transition metals from group 3, 4, 5 or 6 of the Periodic System of the Elements,
Q is an anionic ligand to M,
k is the number of Q groups and equals the valence of M minus 2,
R is a bridging group containing at least one carbon atom bonded to the indenyl moiety at 2-position,
R1, R2, R3 and R4 are each independently chosen from the group consisting of H, a halogen atom and a C1-C20 hydrocarbylgroup, and wherein at least one of R1 and R2 is not H, and at least one of R3 and R4 is not H.
The invention also relates to a catalyst comprising the metallocene complex, to a process for making polyolefins and to the use of the polyolefins for making articles.
本发明涉及一种符合式 I 的茂
金属络合物
其中
M 是选自
镧系元素或元素周期系第 3、4、5 或 6 族过渡
金属的
金属、
Q 是 M 的阴离子配位体、
k 是 Q 基团的数目,等于 M 的化合价减 2、
R 是桥基,至少含有一个碳原子,在 2 位与
茚基结合、
R1、R2、R3 和 R4 各自独立地选自 H、卤素原子和 C1-C20 烃基组成的组,其中 R1 和 R2 中至少有一个不是 H,R3 和 R4 中至少有一个不是 H。
本发明还涉及一种包含茂
金属络合物的催化剂、一种制造聚烯烃的工艺以及使用聚烯烃制造物品。