Chromium oxide catalyst for ethylene polymerization
US11306163B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jan 10, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Apr 20, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a solid catalyst system comprising a chromium compound, a metal compound, an aluminium compound and a silicon oxide support, wherein the silicon oxide support has an average particle diameter in the range between ≥20 and ≤50 μm, a pore volume in the range between ≥1.7 ml/g and ≤3 ml/g, and a surface area in the range between ≥400 m2/g and ≤800 m2/g, and wherein the aluminium alkoxide compound has the formula R1—Al—OR2 wherein R1 is selected from (C1-C8) alkyl groups and OR2 is selected from (C1-C8) alkoxyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.