Chromium compounds and olefin polymerization processes utilizing them
US6809057B2 · kind B2 · utility
4Cited by
23References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Feb 10, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An olefin polymerization catalyst system, comprising a catalyst represented by the general formula CrR4, wherein each R is independently a hydrocarbyl or substituted hydrocarbyl, with the proviso that R may not be a cyclopentadienyl group, an activator represented by the general formula, MQ2, where M is a Group II metal, where each Q is independently an alkyl, or substituted alkyl; and a support. The support may be organic or inorganic. Ethylene and one or more olefins may be polymerized by the catalyst system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.