Use of dioctyl sulfosuccinate salts for cleaning petroleum contaminated surfaces
US6140285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2000 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Mar 13, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition for cleaning petroleum contaminated surfaces includes 5 to 60 percent by weight of a dioctyl sulfosuccinate salt, 20 to 50 percent by weight of a carrier composition and 10 to 75 percent by weight of a diluent. The preferred carrier composition is a mixture of polyethylene glycol and glycerol. The preferred diluent is water. The preferred concentration of sodium dioctyl sulfosuccinate is about 7% by weight. The preferred dioctyl sulfosuccinate salt is sodium dioctyl sulfosuccinate. A method of cleaning petroleum contaminated surfaces is also provided. The steps include providing a solution containing dioctyl sulfosuccinate salt, a carrier composition, and a diluent as described above and treating the petroleum contaminated surface with the solution in a manner and for a time sufficient to decontaminate the surface. The preferred method of treatment comprises contacting the solution with the petroleum contaminated surface for a time sufficient to create an emulsion and then removing the emulsion. The composition can be used to clean tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.