"Bridged ""tethered"" metallocenes"
US6194343A · kind A · utility
4Cited by
16References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a tethered bridged metallocene compound in which the tether typically comprises a segment of the formula --(R.sup.2).sub.d --(CH.sub.2 CH.sub.2).sub.e (CH.dbd.CH).sub.f wherein R.sup.2 is an alkylene or phenylene group, and d, e and f are 1 or 0. One end of the tether reacts with a silane bridged metallocene compound and the other reacts with the support. The activated metallocene compound is capable of producing a polymer having a narrow molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.