Process for separating hydrogen fluoride from its mixtures with 1,1,1-trifluoro-2-chloroethane
US5276225A · kind A · utility
18Cited by
5References
5Claims
0Family size
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Key dates
| Filing date | Mar 31, 1993 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Mar 31, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B7/196
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A halocarbon product made from the reaction of excess hydrogen fluoride with a halocarbon, containing excess hydrogen fluoride as an azeotrope is purified by fluorination in the presence of additional halocarbon or halo-olefin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.