High temperature polymerization process using ionic catalysts to produce polyolefins
US5408017A · kind A · utility
151Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jun 14, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a process for polymerizing olefins at high pressures in a polymerization medium at high temperature utilizing an ionic olefin polymerization catalyst derived from the reaction of a cyclopentadienyl-containing transition metal compound having a hydrolyzable alkyl or hydride ligand with an ion exchange activator. The ionic catalyst system has been found to be highly active at temperatures of 160.degree. C. or greater, to provide a process capable of producing polymer products of desired chemical and physical properties at high production rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.