378797-57-0Relevant articles and documents
Monocyclopentadienyl binuclear complexes, ligands used in their preparaion, catalyst systems comprising them and olefin polymerisation process
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Page/Page column, (2013/07/19)
A complex of formula (I) wherein R1 is a hydrogen atom or C1-C40 hydrocarbon radical Ra and Rb equal to or different from each other, are hydrogen atoms or C1-C40 hydrocarbon radical or Ra and Rb can be joined to form a from 4 to 7 membered ring, M is selected from titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum or tungsten; X, equal to or different from each other, are a hydrogen atom, a halogen atom, a R, OR, OSO2CF3, OCOR, SR, NR2 or PR2 group where R is as defined in the claims; Z is a divalent bridging group; T2 is a radical comprising at least one uncharged donor containing at least one atom of group 15 or 16 of the Periodic Table; L is a divalent bridging group. The invention also relates to a catalyst system comprising complex (I), an alumoxane or a compound capable of forming an alkyl metallocene cation, and optionally an oranoaluminium compound. The catalyst system is employed in the polymerisation of one or more α-olefins. The ligands making up the complex (I) are also claimed.
