Metallocenes with ferrocenyl-substituted bridges used in olefin polymerization
US6239299A · kind A · utility
1Cited by
2References
9Claims
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Key dates
| Filing date | Mar 24, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
##STR1## The invention relates to metallocenes of formula (I), in which M is a metal from the Ti, Zr, Hf, V, Nb, Ta group or an element from the lanthanide group, X.sub.1 and X.sub.2 stand for an alkyl-, aryl-, alkenyl-, arylalkyl-, alkylaryl- or arylalkenyl group and L.sub.1 and L.sub.2 are hydrocarbon capable of forming a sandwich structure with M. R stands for C, Si, Ge or Sn, A and B are ferrocenyl-substituted radicals, or B is optionally a radical X.sub.1 of X.sub.2. The metallocenes are preferably used as catalysts in the polymerization of olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.