Bis(1,1,3,3-tetramethylbutyl) phosphinic acid compound, a production method thereof and an extracting agent
US5872279A · kind A · utility
3Cited by
14References
5Claims
0Family size
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Key dates
| Filing date | Mar 19, 1998 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Mar 19, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A bis(1,1,3,3-tetramethylbutyl)phosphinic acid compound represented by the formula (1) and an extracting agent using the same for separating Co from an aged electroless Ni plating solution. A di(1,1,3,3-tetramethylbutyl)phosphine is produced by carrying out a reaction between phosphine and trimethylpentene in the presence of an organic solvent and a catalyst, then said phosphine is reacted with an oxidizing agent or sulfur to obtain the compound (1): ##STR1## (wherein X.sup.1 and X.sup.2 are O or S).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.