Process for the removal of catalyst residues from olefin polymerization products
US5196630A · kind A · utility
7Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F6/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The process of the present invention relates to a simplified method for the removal of halogen containing catalytic residues from olefin polymerization products. More specifically, the present invention employs as a treating agent, a quaternary ammonium salt, to facilitate removal of greater than 95% of catalytic residues in a single caustic or water wash with less than 15 minutes of settling time required after the wash.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.