盐酸 、 dimethyl-bis(2-methyl-4-phenylinden-1-id-1-yl)silane;phenyl(3-phenylazanidylpropyl)azanide;zirconium(4+) 以
not given 为溶剂,
生成 rac-[Me2Si(2-Me-4-PhInd)2]ZrCl2
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.
1H NMR study of the catalytic system (rac-Me2Si(2-Me,4-PhInd)2ZrCl2— polymethylalumoxane)—triisobutylaluminum
作者:E. E. Faingol'd、O. M. Chukanova、N. M. Bravaya
DOI:10.1007/s11172-005-0340-2
日期:2005.4
The products of the reactions of polymethylalumoxane (MAO) with triisobutylaluminum (TIBA), rac-Me2Si(2-Me,4-PhInd)2ZrCl2 (1) with MAO (1 + MAO), and (1 + MAO) + TIBA were studied by 1H NMR at different molar ratios of the components. When the ratio AlTIBA/AlMAO is ∼6, the reaction between MAO and TIBA involves the replacement of the methyl group of MAO by isobutyl groups and the formation of isobutylmethylalumoxane or mixed isobutylmethylalumoxane structures. When the TIBA content in the system increases to 30 mol.%, these structures are rearranged to form products with a low degree of association. With the equimolar ratio of the reactants, the main reaction products are tetraisobutylalumoxane and polyisobutylalumoxane. The 1 + MAO system with the molar ratio AlMAO/Zr = 50 affords a MAO-bonded monomethyl monochloride derivative [L2ZrCl-µ-Me]δ+[MAO]δ−. An increase in this ratio to 150 produces intermediate binuclear complexes [L2ZrCl-µ-Me-MeZrL2]+[MAO]− and [Me2Al-(µ-Me)2-ZrL2]+[MAO]−. The addition of TIBA induces the replacement of the ZrMe groups by isobutyl groups at the first step of the interaction and formation of nonidentified reaction products at the subsequent steps.
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.
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR20210017553A
公开(公告)日:2021-02-17
본 발명은, 프로필렌 중합에 높은 활성을 나타내고, 분자량이 상대적으로 낮으면서 분자량 분포가 넓고, 어택틱(atatic) 비율이 소정의 범위로 포함되어, 가공성이 향상된 폴리프로필렌 제조에 유용한, 신규 전이 금속 화합물, 이를 포함하는 촉매 조성물, 및 이를 이용한 폴리프로필렌의 제조 방법에 관한 것이다.