2-phenyl-4-acyl-(3H)-pyrazol-3-ones
US4761484A · kind A · utility
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Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Liquid/liquid extraction process for copper from an aqueous sulphuric acid solution acting on the concentrated mineral or semi-finished product to be treated. The extraction is carried out in an organic solvent containing in solution an extraction agent derived from 2-phenyl-4-acyl-(3H)-pyrazol-3-ones, with the phenyl group substituted or unsubstituted. Application to the upgrading of minerals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.