Process for the removal of water from a solution by azeotropic distillation and process for the production of a hydrofluoroalkane
US5514251A · kind A · utility
3Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Mar 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to binary azeotropic compositions between water and 1,1-dichloro-1-fluoroethane, 1-chloro-1,1-difluoroethane, 1,1,1-trifluoroethane, 1,1,1,2-tetrafluoroethane, 1,1-difluoroethane or trifluoroethylene, to a process for the removal of water from solutions by azeotropic distillation using these compositions, as well as to a process for the production of a hydrofluoroalkane in which water is removed from the mixture of reaction products by azeotropic distillation using these compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.