Method of purifying saturated fluoroperhalocarbon liquids
US5300714A · kind A · utility
13Cited by
8References
18Claims
0Family size
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Key dates
| Filing date | Apr 15, 1991 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Apr 15, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/395
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of removing olefinic impurity, such as perfluoroisobutylene, from fluoroperhalocarbon liquid, such as perfluorinated liquid, comprising the step of contacting the fluoroperhalocarbon liquid with a body of particles comprising particles selected from the group consisting of alumina, alkali metal oxide, alkali metal hydroxide, alkaline earth oxide, alkaline earth hydroxide, silicon oxide, tin oxide, zinc oxide, alkaline earth basic carbonate, and alkaline earth basic phosphate, transition metal oxide particles and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.