Chromium (III) catalyst systems with activator-supports
US10858459B2 · kind B2 · utility
11Cited by
80References
26Claims
0Family size
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Key dates
| Filing date | Apr 3, 2020 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Apr 3, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/07
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods for preparing supported chromium catalysts containing a chromium (III) compound and an activator-support are disclosed. These supported chromium catalysts can be used in catalyst compositions for the polymerization of olefins to produce polymers having low levels of long chain branching, and with greater sensitivity to the presence of hydrogen during polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.