Polymer slurry catalyst residue deactivation
US4211863A · kind A · utility
31Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1979 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Jan 17, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31851
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Catalyst residues of a transition metal compound and an organometalliccompound contained in a polymer slurry are deactivated by contact with anhydrous carbon dioxide. Preferably the contacting is carried out in a transfer line connecting the reaction zone with a zone of sufficiently lower pressure that flashing of diluent occurs in the transfer line to assure mixing of the carbon dioxide and the catalyst residues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.