Hydrocyclone modification of catalyst system components for use in olefin polymerization
US11801502B2 · kind B2 · utility
1Cited by
125References
20Claims
0Family size
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Key dates
| Filing date | Sep 12, 2022 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Sep 12, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for modifying a catalyst system component are disclosed in which a feed mixture containing a fluid and from 1 to 15 wt. % of a catalyst system component is introduced into an inlet of a hydrocyclone, an overflow stream containing from 0.1 to 5 wt. % solids and an underflow stream containing from 10 to 40 wt. % solids are discharged from the hydrocyclone, and the underflow stream is spray dried to form a modified catalyst component. Often, from 4 to 20 wt. % of the catalyst system component in the feed mixture has a particle size of less than or equal to 20 μm, or less than or equal to 10 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.