Extraction solvent control for reducing stable emulsions
US9011691B2 · kind B2 · utility
1Cited by
28References
20Claims
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Key dates
| Filing date | Nov 20, 2012 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.