Efficiency of a pre-polymerized catalyst
US5122583A · kind A · utility
56Cited by
7References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Nov 19, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a process for increasing the efficiency of pre-polymerized catalysts used in the polymerization of olefins. The invention includes contacting a pre-polymerized catalyst with a cocatalyst or a mixture of cocatalyst and an electron donor prior to introducing the catalyst into a polymerization reaction zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.