Procedure for the production of vanadium bis-arenes from vanadium oxychloride
US5210244A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Jul 9, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A procedure is described for the preparation of a vanadium bis-arene, [V(arene).sub.2 ], starting from vanadium oxychloride, aluminium metal, aluminium trichloride and an arene, wherein: PA0 (a) vanadium oxychloride (VOCl.sub.3), active aluminium metal, and aluminium trichloride are put in contact with each other, in a liquid arene, to transform the vanadium oxychloride into the complex compound [V(arene).sub.2 ].sup.+ [AlCl.sub.4 ].sup.- ; PA0 (b) a liquid cyclic or acyclic or acyclic ether is added to the reaction product of step (a) to reduce [V(arene).sub.2 ].sup.+ to [V(arene).sub.2 ]; and PA0 (c) the vanadium bis-arene [V(arene).sub.2 ] is recovered from the reacton product of step (b). The vanadium bis-arenes thus obtained are use in the preparation of catalysts for the polymerization of olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.