Emulsion process for improved large spherical polypropylene catalysts
US8685879B2 · kind B2 · utility
1Cited by
18References
23Claims
0Family size
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Key dates
| Filing date | Apr 29, 2011 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are spherical magnesium-based catalyst supports and methods of using the same in a Ziegler-Natta catalyst system for the polymerization of an olefin. The spherical magnesium-based catalyst supports are made by reacting a magnesium halide, a haloalkylepoxide, and a phosphate acid ester in an organic solvent that does not have to contain substantial amounts of toluene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.