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.
Metallocene compounds, processes for the production of olefin polymers using catalysts containing the compounds, and olefin polymers produced by the processes
申请人:CHISSO CORPORATION
公开号:US20040127731A1
公开(公告)日:2004-07-01
Metallocene compounds represented by the following general formula (1):
Y
q
KLMX
2
(1)
wherein M, Y, q, L and X are each as defined in the Specification.
以下是用中文翻译的结果:
由下列一般式(1)表示的茂金属化合物:
Y
q
KLMX
2
(1)
其中M、Y、q、L和X的定义如规范中所述。
전이금속 화합물 및 이를 포함하는 촉매 조성물
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR20190086989A
公开(公告)日:2019-07-24
본 발명은 신규한 리간드 화합물, 전이금속 화합물 및 이를 포함하는 촉매 조성물에 관한 것이다. 본 발명의 전이금속 화합물은 저밀도를 가지는 올레핀계 중합체의 제조에 있어 중합 반응의 촉매로 유용하게 사용될 수 있다. 또한, 상기 전이금속 화합물을 포함하는 촉매 조성물을 이용하여 중합한 올레핀 중합체는 용융지수(MI)가 높은 저분자량의 제품 제조가 가능하다.
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.
The present invention relates to compounds in which a transition metal is complexed with two ligand systems and the two systems are reversibly bonded together by at least one bridge consisting of a donor and an acceptor, at least one substituent on the acceptor group being a fluorinated aryl radical, to the use of these compounds as catalysts and to a process for the polymerization of olefins.