Improved preparation of titanium (ii) or zirconium (ii)...

Details Improved preparation of titanium (ii) or zirconium (ii)... Improved preparation of titanium (ii) or zirconium (ii)...

C - Chemistry, Metallurgy

07

F

C07F 17/00 (2006.01)

Patent

CA 2204605

aitanium and zirconium complexes comprising a single, cyclic, delocalized .pi.- bonded ligand group wherein the metal of said complexes is in the +2 formal oxidation state are prepared in high yield and purity by reaction of titanium and zirconium halides in the +3 or +4 oxidation state with an n-alkyl Grignard reagent. The complexes are used as catalyst components for .alpha.-olefin polymerization catalysts.

Des complexes de titane et de zirconium, comprenant un groupe ligand à liaison pi délocalisé cyclique, unique, où le métal de ces complexes se trouve à l'état d'oxydation formel +2, sont préparés avec des rendements élevés et un grand degré de pureté, par réaction d'halogénures de titane et de zirconium à l'état d'oxydation +3 ou +4, à l'aide d'un réactif de Grignard n-alkyle. Ces complexes sont utilisés comme composants catalytiques pour des catalyseurs de polymérisation d' alpha -oléfines.

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