Molar ratio modifications to larger polyolefin catalysts
US8344079B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Jun 1, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/46
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially spherical shape and containing an internal electron donor, a support made by contacting substantially equal molar amounts of a magnesium compound and an epoxy compound in the presence of an aprotic solvent and subsequent treatment with a halogenating agent to provide a magnesium based catalyst support. The catalyst system can further contain an organoaluminum compound and an organosilicon compound. Also disclosed are methods of polymerizing or copolymerizing an alpha-olefin. The methods involve contacting an olefin with a catalyst system containing the solid titanium catalyst component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.