Ketone-based surfactant and method for treating industrial, commercial, and institutional waste-water
US5851434A · kind A · utility
3Cited by
30References
9Claims
0Family size
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Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nonionic surfactant having cyclic 1,3-dioxane and/or 1,3-dioxolane functionality which is irreversibly splittable by lowering the pH of its aqueous solution is useful in various processes requiring the removal of emulsified hydrophobic contaminants or other hydrophobic materials from an aqueous stream. After splitting of the surfactant into its component ketone and polyol, the hydrophobic components phase-separate and can be removed from the aqueous stream by routine means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.