943406-22-2Relevant articles and documents
Catalyst composition including transition metal complexes and olefin polymerization using the same
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, (2009/04/24)
Provided is catalyst composition including a transition metal complex precatalyst represented by Formula 1; a first cocatalyst represented by Formula 2 which is an alkylaluminum compound; and a second cocatalyst represented by Formula 3 which is a salt compound comprising a Bronsted acid cation and a noncoordinating, compatible anion. Here, R1, R2, R3, R4, E, Q1, Q2 and M are defined in the specification. [in-line-formulae]Al(R6)3??Formula 2[/in-line-formulae] Here, R6 is defined in the specification. [in-line-formulae][L-H]+[ZA4]???Formula 3[/in-line-formulae] Here, L, [L-H]+, Z and A are defined in the specification. A catalyst composition including binuclear transition metal complexes, an alkylaluminum compound, and a salt compound including a Bronsted acid cation, and a noncoordinating, compatible anion, and a method of preparing the catalyst composition are provided.
Bimetallic phenylene-bridged Cp/amide titanium complexes and their olefin polymerization
Lee, Sang Hoon,Wu, Chun Ji,Joung, Ui Gab,Lee, Bun Yeoul,Park, Jinil
, p. 4608 - 4614 (2008/03/13)
Bimetallic dichlorotitanium complexes, {2,6-[η5-2,5-Me 2C5H2]2-4-R-C6H 2N-N}{Ti(iv)Cl2}2 (7, R = Me; 8, R = F) and 4,4′-A[{2-(η5-2,3,5-Me3C5H)C 6H3NC6H11-κN}Ti(iv)Cl 2]2 (18, A = CH2; 19, A = O; 20, A = ortho-C6H4) are prepared via a key step of the Suzuki-coupling reaction of 2-dihydroxyboryl-3-methyl-2-cyclopenten-1-one (1) with dibromo-compounds. The solid state structure of 7 was determined by X-ray crystallography. Complexes 7 and 8 are not active for ethylene/1-hexene copolymerization. Meanwhile, the complexes 18-20 are highly active and their activities are higher than that of the mononuclear analogue, {2-(η5-2,3,5-Me3C5H)C6H 3NC6H11-κN}Ti(iv)Cl2 (21). The molecular weights of the polymers obtained with the bimetallic complexes 18-20 are higher than that of the polymer obtained using 21. Slightly higher contents of long-chain-branching are observed for the copolymers obtained using the bimetallic system. The Royal Society of Chemistry.
TRANSITION METAL COMPLEXES AND PREPARATION METHODS THEREOF
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Page/Page column 35, (2010/11/28)
The present invention provides a novel mononuclear transition metal compound, a novel binuclear transition metal compound, a novel organic amine or phosphorous compound, and a method for preparing the same. The mononuclear transition metal compound accord