Chlorofluorohydrocarbon purification process
US4973774A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Nov 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/395
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Chlorofluorohydrocarbons contaminated with unwanted isomers during the process for their manufacture are purified by reacting the mixture with alcohol solutions of alkali metal and then separating the ether derivatives of the isomers from the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.