Aluminum-phosphinimine complexes as catalysts for the (co)polymerization of ethylene
US6239061A · kind A · utility
18Cited by
15References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aluminum-phosphinimine complexes function as a component in a catalyst system for the (co)polymerization of ethylene. The inventive catalyst components form a highly productive polymerization system when activated with so-called "ionic activators". The need for conventional transition metal catalyst metals (such as titanium, hafnium, zirconium or vanadium) is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.