Supported phosphinimine-Cp catalysts
US5965677A · kind A · utility
94Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst component which is especially useful in so-called "slurry" or "gas phase" olefin polymerizations and which comprises an organometallic complex of a group 4 metal (having a cyclopentadienyl-type ligand and a phosphinimine ligand) and a particulate support. The catalyst component forms an excellent catalyst system when combined with an activator such as an aluminoxane or a so-called "substantially non-coordinating anion". In a preferred embodiment the organometallic complex and the activator are both deposited on the particulate support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.