- Asymmetric ansa-zirconocenes containing a 2-methyl-4-aryltetrahydroindacene fragment: Synthesis, structure, and catalytic activity in propylene polymerization and copolymerization
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A set of asymmetric bis-indenyl zirconium SiMe2-bridged ansa-complexes, containing 2-isopropyl-4-arylindenyl and 2-methyl-4- aryltetrahydroindacenyl fragments, have been synthesized. These complexes demonstrate better catalytic activity, stereoselectivty, and polymer molecular weight capability in propylene homo-and copolymerization in comparison to analogues without a tetrahydroindacenyl fragment.
- Nifant'ev, Ilya E.,Ivchenko, Pavel V.,Bagrov, Vladimir V.,Okumura, Yoshikuni,Elder, Michael,Churakov, Andrei V.
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p. 5744 - 5752
(2012/01/14)
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- ORGANOMETALLIC TRANSITION METAL COMPOUND, BISCYCLOPENTADIENYL LIGAND SYSTEM, CATALYST SYSTEM AND PREPARATION OF POLYOLEFINS
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The present invention relates to organometallic transition metal compounds of the formula (I) where Mis an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides, the radicals X are identical or different and are each a
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Page/Page column 39
(2010/02/12)
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- GROUP 4 METAL COMPLEXES CONTAINING 4-ARYL-SUBSTITUTED, TRICYCLIC INDENYL DERIVATIVES
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Group 4 metal constrained geometry complexes comprising tricyclic 4-aryl-substituted indenyl ligands, especially 1,5,6,7-tetrahydro-4-aryl-s-indacen-1-yl ligands, catalytic derivatives thereof, processes for preparing the same and their use as components
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Page/Page column 12-13
(2010/02/06)
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