Bis-phosphinimine catalyst
US6239238A · kind A · utility
15Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Jun 15, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Organometallic complexes having two phosphinimine ligands and at least one activatable ligand are catalyst components for olefin polymerization. Preferred polymerization systems are prepared by combining the organometallic complexes with an ionic activator and/or an alumoxane. Preferred catalyst components contain titanium, zirconium, or hafnium and are activated with an ionic activator to form catalysts for ethylene polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.