Spray-dried polymerization catalyst and polymerization processes employing same
US6982237B2 · kind B2 · utility
13Cited by
19References
26Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 15, 2002 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Feb 17, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A spray-dried catalyst precursor composition and method of making a spray-dried catalyst precursor composition with an inert filler, magnesium, a transition metal, solvent, and one electron donor compound. The catalyst precursor composition is substantially free of other electron donor compounds, the molar ratio of the electron donor compound to magnesium is less than or equal to 1.9, and comprises spherical or substantially spherical particles having a particle size of from about 10 to about 200 μm. Catalysts made from the spray-dried catalyst precursors and polymerization methods using such catalysts are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.