METALLOCENE COMPOUND, PROCESS FOR PRODUCING METALLOCENE COMPOUND, OLEFIN POLYMERIZATION CATALYST, PROCESS FOR PRODUCING POLYOLEFIN, AND POLYOLEFIN
申请人:Mitsui Chemicals, Inc.
公开号:EP1138687A1
公开(公告)日:2001-10-04
The metallocene compound according to the invention and the olefin polymerization catalyst containing the compound are intended to produce a catalyst capable of preparing an isotactic polymer with a high polymerization activity. The metallocene compound contains a substituted cyclopentadienyl group and a (substituted) fluorenyl group and has a structure wherein these groups are bridged by a hydrocarbon group or the like. The process for preparing a metallocene compound according to the invention is intended to selectively prepare a specific metallocene compound so as not to produce an isomer, and in this process an intermediate product is synthesized by a specific method. The process for preparing a polyolefin according to the invention is intended to prepare a polyolefin having excellent impact resistance and transparency, and this process comprises homopolymerizing an α-olefin of 3 to 8 carbon atoms or copolymerizing an olefin of 3 to 8 carbon atoms and another α-olefin in the presence of an olefin polymerization catalyst containing the above-mentioned metallocene compound.
根据本发明的茂金属化合物和含有该化合物的烯烃聚合催化剂旨在生产一种能够制备具有高聚合活性的异构聚合物的催化剂。茂金属化合物含有一个取代的环戊二烯基团和一个(取代的)芴基团,其结构中这些基团被烃基或类似基团桥接。根据本发明制备茂金属化合物的工艺旨在选择性地制备特定的茂金属化合物,以避免产生异构体,在此工艺中,通过特定的方法合成中间产物。根据本发明制备聚烯烃的工艺旨在制备具有优异抗冲击性和透明度的聚烯烃,该工艺包括在含有上述茂金属化合物的烯烃聚合催化剂存在下,均聚 3 至 8 个碳原子的 α 烯烃或共聚 3 至 8 个碳原子的烯烃和另一种 α 烯烃。