Process for the purification of diethoxymethane from a mixture with ethanol and water
US4740273A · kind A · utility
4Cited by
11References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1987 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Apr 16, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D3/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for purifying diethoxymethane from a mixture containing ethanol and, optionally, water. The process involves the addition of an amount of water, DEM, or an appropriate mixture of any two or three of water, DEM and ethanol that is effective in moving the mixture into the two liquid phase region on an equilibrium tie-line which crosses the critical distillation boundary without the need for additional azeotrope-forming agents such as cyclohexane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.