Dual site catalyst system comprising a hafnocene component for the production of bimodal polyolefins in a single reactor
US7666959B2 · kind B2 · utility
18Cited by
14References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2003 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Oct 24, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention discloses a metallocene catalyst system for producing polyolefins comprising: A. a hafnocene-based catalyst component suitable for producing the high molecular weight fraction of the polyolefin; B. one or more metallocene or post-metallocene components different from the component A and suitable for producing the low molecular weight fraction of the polyolefin; C. an activating agent having a low or no coordinating capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.