Removal of water from a phosgene recycle stream
US5362399A · kind A · utility
4Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1992 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Dec 30, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J41/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for removing water traces from a liquid phosgene stream in chemical processes which employ a phosgenation step. Water traces are removed from a liquid phosgene stream containing at least 60 weight percent phosgene by contacting the stream with a strongly basic macroreticular anion exchange resin which catalyzes the reaction between phosgene and the water traces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.