Demulsifiers in solvent base for separating emulsions and methods of use
US7786179B2 · kind B2 · utility
7Cited by
10References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2009 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jan 7, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Demulsifiers containing an anionic surfactant selected from alkylsulfosuccinates, alkylphosphonic acids, and their salts; a nonionic surfactant selected from ethylene oxide/propylene oxide copolymers, ethoxylated fatty acids of polyethylene glycol, terpene alkoxylates, and modified alkanolamides; and solvent bases comprising blends of dibasic esters. Methods for breaking emulsions using such demulsifiers and solvent bases are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.