Open-pentadienyl metallocenes, precursors thereof and polymerization catalysts therefrom
US6403772B1 · kind B1 · utility
5Cited by
1References
19Claims
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Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/61912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
New metallocene compounds are described where the ligand contains at least one open-pentadienyl containing radical characterized by a cyclic or acyclic, six &pgr; electron, delocalized, five atomic center structure. These metallocenes can advantageously be used in catalyst systems for the polymerization of olefins to generate a wide variety of different polymers including HDPE, LLDPE, ethylenelpropylene/(diene) elastomers, tactiospecific C3+&agr;-olefin polymers, intimate mixture thereof and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.