Organometallic complexes comprising phosphonite ligands, and their use in catalyzing olefin oligomerization
US6864209B2 · kind B2 · utility
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Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Mar 31, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalytic composition for oligomerizing olefins, in particular ethylene, comprises mixing at least one nickel complex, prepared by reacting a nickel salt with a phosphonite ligapd, with at least one hydrocarbylaluminum compound in a molar proportion with respect to the nickel of not more than 8″ and selected from the group formed by tris(hydrocarbyl)aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.