Ansa-metallocene compound, process of preparing the same, and process of preparing polyolefin using the same
US7629481B2 · kind B2 · utility
1Cited by
6References
4Claims
0Family size
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Key dates
| Filing date | Sep 23, 2005 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Sep 23, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are a bridged metallocene compound particularly suitable for copolymerization of ethylene and alpha-olefin or cyclic olefin, a process of preparing the metallocene compound, and a process of preparing polyolefin using the metallocene compound. The bridged metallocene compound has low steric hindrance and good (co)polymerization activity, and thus, exhibits good activity in copolymerization of ethylene and alpha-olefin such as 1-hexene or 1-octene. Furthermore, the process of preparing the bridged metallocene compound is simplified, and thus, suitable for mass production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.