Method to remediate soil using a surfactant of a salt of an acrylamidoalkanesulfonic acid-amine reaction product
US6264399A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S588/901
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for remediating soil which is contaminated by one or more hydrophobic organic chemicals, comprising: PA1 contacting the contaminated soil with an aqueous composition comprising a surfactant prepared by reacting a sulfonate of the formula ##STR1## PA1 an amine wherein R.sup.1 is hydrogen or methyl, R.sup.2 is hydrogen or an alkyl group containing up to 18 carbon atoms, and each of R.sup.3, R.sup.4 and R.sup.5 is individually hydrogen or an alkyl group containing up to 7 carbon atoms and M is an alkali metal, an alkaline earth metal or --NR.sup.10 R.sup.11 R.sup.12 wherein R.sup.10, R.sup.11 and R.sup.12 are independently hydrogen or hydrocarbyl groups containing from 1 to 22 carbon atoms and PA1 removing said aqueous compositions and organic chemicals associated therewith from the soil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.