Process for removal of dimethyl ether in the synthesis of sevoflurane
US6448451B1 · kind B1 · utility
3Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jun 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides a process for purifying methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether, comprising: passing a composition comprising methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether and dimethyl ether through an evaporation zone; evaporating dimethyl ether by passing a gas stream through the composition; and removing the gas comprising dimethyl ether from the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.