Demulsifiers and methods for use in pharmaceutical applications
US8133924B2 · kind B2 · utility
0Cited by
7References
25Claims
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Key dates
| Filing date | Apr 2, 2009 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/3808
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Demulsifiers containing an anionic surfactant selected from alkylsulfosuccinates, alkylsulfonates, 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; or a combination of an anionic and a nonionic surfactant, and methods of use thereof in breaking emulsions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.