METALLOCENE COMPOUND, CATALYST FOR OLEFIN POLYMER, METHOD FOR PRODUCING OLEFIN POLYMER, AND OLEFIN POLYMER
申请人:JAPAN POLYETHYLENE CORPORATION
公开号:US20160009838A1
公开(公告)日:2016-01-14
The invention provides a metallocene compound and an olefin polymerization catalyst for use for a catalyst for producing an olefin polymer having a sufficiently high molecular weight while maintaining excellent copolymerizability at a polymerization temperature and under polymerization conditions industrially advantageous in polymerization of an olefin such as ethylene or the like, and provides a method for producing nan olefin polymer using the catalyst. The metallocene compound of the present invention is represented by the following general formula [I]:
A Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing electron donating group, especially an amido group.
一个含有硼或铝桥联基团以及含有氮的电子给体基团的第四族过渡金属配合物,特别是一种酰胺基团。
Transition Metal Compound, Catalyst Composition and Method for Preparing Polypropylene Using the Same
申请人:LG Chem, Ltd.
公开号:US20220098225A1
公开(公告)日:2022-03-31
The present disclosure relates to a novel transition metal compound of the following Chemical Formula 1, which exhibits high hydrogen reactivity with excellent catalytic activity for propylene polymerization, and is useful in the preparation of a polypropylene having a narrow molecular weight distribution and a low melting point, a catalyst composition including the same, and a method for preparing a polypropylene using the same,
wherein M, X
1
, X
2
, R
1
to R
9
are described herein.
Polyolefin production catalyst and method of preparing polyolefins
申请人:Japan Polyolafins Co., Ltd.
公开号:US06121182A1
公开(公告)日:2000-09-19
A catalyst component for polyolefin production catalysts comprising a metallocene compound represented by general formula (1) (symbols have the meanings as described in the specification), polyolefin production catalyst containing the component, and method for producing polyolefin with the catalyst are provided. Use of a catalyst containing the novel metallocene compound as a catalyst component of the invention in polymerization of .alpha.-olefin, particularly propylene, enables one to prepare high rigid, high melting point isotactic polypropylene useful as an industrial material for automobiles and the like, more specifically isotactic polypropylene having highly controlled stereoregulartity and regioregularity, particularly the one having a high regioregularity that has been difficult to achieve with conventional metallocene catalysts. ##STR1##