Aldehyde-based surfactant and method for treating industrial commercial and institutional waste-water
US5919372A · kind A · utility
4Cited by
31References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Dec 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/908
- 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 aldehyde 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.