Polymerization catalyst systems, their use, their products and articles thereof
US6528597B2 · kind B2 · utility
48Cited by
5References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Mar 14, 2021 |
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 invention is also directed to an ethylene copolymer composition produced by using the bulky ligand hafnium metallocene-type catalysts of the invention, in particular a single reactor polymerization process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.