Solvent for the extraction of oil fraction in water
US4164653A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 29, 1977 |
| Grant date | Aug 14, 1979 |
| Priority date | — |
| Expiry date | Nov 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/0484
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a solvent primarily composed of a low polymer of chlorotrifluoroethylene for the extraction of an oil fraction in water and measuring the concentration of the oil fraction in water by solvent extraction in the infrared absorption method. The low polymers of chlorotrifluoroethylene contemplated as a solvent herein may be a single polymer or a mixture of polymers of different degrees of polymerization as shown in the following formulae: ##STR1## WHEREIN BOTH ATOMS REPRESENTED BY X in the first chemical formula are the same or different from each other and X is a chlorine or fluorine atom, and n is 2 or 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.