Modified chromium-based catalysts and polymerization processes for using the same
US9303103B2 · kind B2 · utility
7Cited by
5References
26Claims
0Family size
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Key dates
| Filing date | Dec 10, 2008 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Oct 10, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49345
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Embodiments disclosed herein generally relate to olefin polymerization catalysts, and more specifically to chromium-based catalysts and methods of use of chromium-based catalysts for the production of polyolefins, and even more specifically to methods for controlling or tailoring the flow index response of chromium-based catalysts through the controlled addition of a reducing agent to the catalysts under controlled mixing conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.