Method for treating contaminated surface with aldehyde-based surfactant
US6306249A · kind A · utility
21Cited by
36References
1Claims
0Family size
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Key dates
| Filing date | Feb 24, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Feb 24, 2020 |
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.