Processes for transitioning between various polymerization catalysts
US6858684B2 · kind B2 · utility
9Cited by
13References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2003 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Nov 17, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems, metallocene catalyst systems and chromium-based catalyst systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.