Cleaning and purifying compositions and associated method for purifying process water from the refinement of petroleum
US8445420B2 · kind B2 · utility
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1References
12Claims
0Family size
Inventors
Key dates
| Filing date | Jul 21, 2011 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Jul 21, 2031 |
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 monoalkyl ether, and a bonding agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.