Process for preparing cyclopentadienyl group-containing silicon compound
申请人:Mitsui Petrochemical Industries, Ltd.
公开号:US05360921A1
公开(公告)日:1994-11-01
Disclosed is a process for preparing a cyclopentadienyl group-containing silicon compound or a cyclopentadienyl group-containing germanium compound, comprising reacting (i) a lithium, sodium or potassium salt of a cyclopentadiene derivative with (ii) a silicon halide compound or a germanium halide compound in the presence of a cyanide or a thiocyanate. The cyanide or the thiocyanate is preferably a copper salt. According to the process of the invention, a cyclopentadienyl group-containing silicon compound or a cyclopentadienyl group-containing germanium compound, which is very useful for the preparation of a metallocene complex catalyst component, can be prepared in a high yield for a short period of time.
<i>C</i><sub>2</sub>-Symmetric <i>ansa</i>-Lanthanidocene Complexes. Synthesis via Silylamine Elimination and β-SiH Agostic Rigidity
作者:Jörg Eppinger、Michael Spiegler、Wolfgang Hieringer、Wolfgang A. Herrmann、Reiner Anwander
DOI:10.1021/ja992786a
日期:2000.4.1
mononuclear metallocene complexes of the lanthanide elements is described. Heteroleptic lanthanidocene silylamidecomplexes have been obtained ate-complex-free according to silylamine elimination reactions of complexes Ln[N(SiHMe2)2]3(THF)x (x = 1, Ln = Sc; x = 2, Ln = Y, La, Nd, Lu) and linked, substituted cyclopentadiene and indene systems. The molecular structure of [Me2Si(C5Me4)2]La[N(SiHMe2)2] (95% isolated
描述了一类新的镧系元素的 C2 对称单核茂金属配合物的合成以及光谱和结构表征。根据配合物 Ln[N(SiHMe2)2]3(THF)x (x = 1, Ln = Sc; x = 2, Ln = Y, La , Nd, Lu) 和连接的、取代的环戊二烯和茚系统。[Me2Si(C5Me4)2]La[N(SiHMe2)2](95% 分离产率)的分子结构已通过 X 射线晶体学确定。已经以高达 72% 的外消旋产率分离出 Brintzinger 型茚基衍生的茂金属配合物。IR 和多核 NMR 光谱(1H、13C、29Si、
Metallocene supported catalyst and method for preparing polypropylene using the same
申请人:LG Chem, Ltd.
公开号:US10815322B2
公开(公告)日:2020-10-27
The present invention relates to a supported metallocene catalyst including a novel single metallocene compound having excellent polymerization activity, and a process for producing a polypropylene having excellent processability and broad molecular weight distribution using the same.
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR20170082917A
公开(公告)日:2017-07-17
본 발명은 올레핀 중합 반응에서 높은 반응성을 나타낼 수 있을 뿐만 아니라 합성되는 올레핀 중합체의 내부 구조, 기계적 물성 등의 특성을 용이하게 조절할 수 있는 신규한 구조의 메탈로센 화합물, 이를 포함하는 촉매 조성물 및 상기 촉매 조성물을 이용한 올레핀 중합체의 제조 방법에 관한 것이다.
ANSA-METALLOCENE COMPOUND AND METHOD FOR PREPARING SUPPORTED CATALYST USING THE SAME
申请人:LG CHEM, LTD.
公开号:US20150073107A1
公开(公告)日:2015-03-12
This disclosure relates to an ansa-metallocene compound of a novel structure that can provide various selectivities and activities to polyolefin copolymers, a preparation method thereof, and a method for preparing polyolefins using the ansa-metallocene compound.