Method of treating fluorine compound and treated substance
US6897344B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Jul 26, 2001 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Sep 10, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Divalent and trivalent metal salts are added to the solution containing the fluorine compound to precipitate the layered double hydroxide containing the fluorine compound between layers. By these processes, the fluorine compound can be fixed with high rate. Moreover, if necessary, the precipitated layered double hydroxide can be recovered to separate the fluorine compound or its salt between layers. Therefore, the burden to environment or the ecosystem by the fluorine compound can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.