Metal extraction process
US4020106A · kind A · utility
57Cited by
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1Claims
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Key dates
| Filing date | Aug 12, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Aug 12, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Salicylaldoximes having a total of at least three alkyl carbon atoms contained in one or more nuclear substituents are used to extract metals from aqueous solutions of their salts as complex compounds soluble in water-immiscible organic solvents. The salicylaldoximes are prepared from the corresponding salicylaldehydes by reaction with hydroxylamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.