Metallocene catalysts and their production and use

专利名称：Metallocene catalysts and their production

and use

发明人：Moses O. Jejelowo申请号：US08/190718申请日：19940201公开号：US05359015A公开日：19941025

摘要：An improved catalyst system and process of producing polyolefins having acontrollable broadened molecular weight distribution utilizing transition metal

metallocene catalyst systems, wherein at least one of the metallocenes has at least onecyclopentadienyl ring being substituted by at least one optionally substituent having a 2°or 3° carbon atom with which it is covalently bonded to the cyclopentadienyl ring. Themethod for forming the catalyst system of this present invention can be either by aphysical or a chemical mixing process.

申请人：EXXON CHEMICAL PATENTS INC.

代理人：Jaimes Sher

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