Process for measuring concentration of nonionic surfactants in an aqueous alkaline solution
US6017766A · kind A · utility
2Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1998 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Jan 28, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a process for precisely measuring the concentration of a nonionic surfactant in an aqueous alkaline solution. The process comprises extracting the surfactant into an organic solvent, separating the solvent and forming a colored complex that can be quantitatively measured to give the actual concentration of the surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.