The present invention relates to a metal-free cyclopentadienide compound which, in conjunction with a metallocene, is able to form a catalyst system that can be used for the polymerization of olefins. It is thus possible to dispense with the use of methylaluminoxane (MAO) or boron-containing compounds as co-catalyst and nevertheless achieve a high degree of catalytic activity. The invention relates also to a process for the preparation of the metal-free cyclopentadienide compound and to the use thereof as a catalyst component in the preparation of polyolefins.
本发明涉及一种无
金属
环戊二烯基化合物,该化合物与
金属茂
金属配合物结合,能够形成催化系统,可用于烯烃的聚合。因此,可以不使用甲基铝氧化物(MAO)或含
硼化合物作为共催化剂,仍然可以实现高度的催化活性。本发明还涉及一种制备无
金属
环戊二烯基化合物的方法,并将其用作聚烯烃制备中的催化剂组分。