Cleaning and purifying compositions and associated method for purifying process water from the refinement of petroleum
US7985721B2 · kind B2 · utility
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5References
12Claims
0Family size
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Key dates
| Filing date | Aug 27, 2007 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Sep 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A cleaning and purifying composition including at least one solvent, an alkaline agent, a deflocculant, at least one surfactant selected from the group comprising an alcohol ethoxylate surfactant, an alkylamino-polyethoxy-sulfate surfactant, a polyether-phosphate ester surfactant, a surfactant that is a phosphate ester of an ethoxylated alcohol, and a surfactant that is a polyethyleneglycol monoaklyl ether, and a bonding agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.