Method of clarifying oily waste water
US7431845B2 · kind B2 · utility
13Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Jul 20, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of clarifying oily waste water comprising adding to the waste water an effective clarifying amount of one or more demulsifiers selected from the group consisting of dendritic polyamines, dendritic polyamidoamines and hyperbranched polyethyleneimines and the reaction products thereof with gluconolactone, alkylene oxides, salts of 3-chloro-2-hydroxypropanesulfonic acid, alkyl halides, benzyl halides and dialkyl sulfates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.