Elimination process of fluorinated anionic surfactants
US7011696B2 · kind B2 · utility
6Cited by
8References
20Claims
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Key dates
| Filing date | Jul 17, 2003 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Oct 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An elimination process of fluorinated anionic sufactants from exhausted gaseous streams, wherein the gaseous stream is put into contact with aqueous solutions having in the range from 3.5 to 13.8, the aqueous solution density being lower than 1.05 g/cm3, wherein the concentration in the aqueous solution of the fluorinated anionic surfactant removed by the gaseous stream is lower than or equal to 70 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.