Metallocene catalyst and catalyst system for producing polypropylene blend of iso- and syndio-tactic polypropylene
US6518377B1 · kind B1 · utility
10Cited by
3References
12Claims
0Family size
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Key dates
| Filing date | Sep 1, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Oct 3, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyolefin metallocene catalyst which includes two metallocene components, a stereorigid isospecific metallocene catalyst component and a stereorigid syndiospecific metallocene catalyst component, both of which are supported upon the same support. A method of forming a catalyst system includes contacting the above catalyst with a cocatalyst or Lewis acid. A method of polymerization includes contacting an olefin with the catalyst system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.