Chromium oxide catalyst for ethylene polymerization
US12331149B2 · kind B2 · utility
0Cited by
26References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2020 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | May 10, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a solid catalyst system comprising a first chromium compound, a second chromium compound, a reaction product of an alkyl aluminium compound and a nitrogen containing compound and a silicon oxide support, wherein the first chromium compound is chromium trioxide or a compound convertible to chromium trioxide, the second chromium compound is a slilylchromate compound and the nitrogen containing compound is a cycloalkylamine compound having the general formula: R3—NH2, wherein R3 is selected from C3-C8 cycloalkyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.