Polymerization catalyst systems comprising substituted hafinocenes
US6242545A · kind A · utility
102Cited by
11References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1997 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The hafnocene comprises at least one cyclopentadienyl ligand including at least one linear or isoalkyl substituent of at least 3 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.