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| Number | Title | Issue Date |
| 8133924 | Demulsifiers and methods for use in pharmaceutical applications 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, ... | 03/13/2012 |
| 7786179 | Demulsifiers in solvent base for separating emulsions and methods of use 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 alkoxylat... | 08/31/2010 |
| 7671099 | Method for spearation crude oil emulsions A method for breaking an emulsion of oil and water comprising contacting the emulsion with a demulsifier comprising a terpene alkoxylate is disclosed. ... | 03/02/2010 |
| 7569615 | Alkoxylated dendrimers and use thereof as biodegradable demulsifiers Disclosed is the use of alkoxylated dendrimers for breaking oil/water emulsions. The alkoxylated dendrimers have a molecular weight of from 2400 to 100 000 g/mol and have been alkoxylated with C2-C4-alkylene oxide groups or a mixture of such al... | 08/04/2009 |
| 6727388 | Demulsifying compound and a method of breaking or inhibiting emulsions The present invention is a demulsifying and corrosion-inhibiting compound formed from the salt of an amphiphilic amine and an amphiphilic acid. In a preferred embodiment of the invention, the demulsifier may be a salt of an alkyl amine and an alkyl aryl sulfonic aci... | 04/27/2004 |
| 5614101 | Methods for treating mud wash emulsions The present invention provides for methods for treating bottoms sludge and water-oil interphase emulsions present in a containment vessel by injecting into the sludge an effective resolving amount of an oil-based demuislfier. In a preferred embodiment, th... | 03/25/1997 |
| 5433863 | Method for clarifying wastewater containing surfactants A method and apparatus for recovering oil and clarifying waste water from an oil field are disclosed. The method includes the step of treating the waste water with an aqueous de-emulsifying agent comprising wattle tannin, an inorganic coagulant and a synt... | 07/18/1995 |
| 5290484 | Process for the preparation of secondary alkyl sulfate-containing surfactant compositions This invention relates to a process for preparing solid and non-solid secondary alkyl sulfate-containing surface active compositions. The solid secondary alkyl sulfate-containing surface active compositions are formed by crystallization, and the non-solid... | 03/01/1994 |
| 5256329 | 1,1-dichloro-1-fluoroethane dewatering systems This invention relates to compositions comprising a volatile hydrochlorofluorocarbon such as 1,1-dichloro-1-fluoroethane and demulsifer. The compositions are effective as drying agents.... | 10/26/1993 |
| 5256305 | Method for breaking emulsions in a crude oil desalting system Method of breaking the desalter emulsion in a crude oil desalting system in which oil based demulsifiers are added to the wash water stream and mixed prior to contacting the crude oil. The method is effective for crude oils which form reverse (oil-in-wate... | 10/26/1993 |
| 5098605 | Vinyl phenol polymers for demulsification of oil-in-water emulsions Oil-in-water emulsions are resolved by contacting the emulsion with a polymer of vinyl phenol or a salt thereof. The polymers may be made by hydrolyzing polyacetoxystyrene.... | 03/24/1992 |
| 4477286 | Breaking oil-in-water emulsions The invention relates to the use of 2,4,7,9-tetramethyl-5-decyne-4,7-diol for breaking oil-in-water emulsions and in regenerating used cleaning compositions by making it possible to remove emulsified oils therefrom.... | 10/16/1984 |
| 4438026 | Solvent dewatering composition Water-displacing compositions based on fluorocarbon solvent FC-113 (1,1,2-trifluoro-1,2,2-trichloroethane) and certain surfactants are provided. These solutions serve to displace water from a broad range of substrates, including metals such as stainless-s... | 03/20/1984 |
| 4401584 | Solvent based dewatering system with demulsifier Surfactant-modified, 1,1,2-trichloro-1,2,2-trifluoroethane solvent compositions are provided which contain small but effective amounts, i.e., about 0.2 to about 0.5 weight percent of solvent soluble/water insoluble surfactant and/or surfactant demulsifier... | 08/30/1983 |
| 4036589 | Determining the concentration of a biocide additive in a liquid A method and a kit for testing the biocide concentration of a liquid containing a biocide of the type which breaks down in acidic aqueous solution to liberate formaldehyde. A strong aqueous acid is added to the liquid, and a modified Schiff's reagent is a... | 07/19/1977 |
| 4008096 | Asphalt plug emplacement process A process for plugging a subterranean earth formation by injecting an asphalt-containing emulsion is improved by a cationic emulsifier and a pH increasing reactant that induces the breaking of the emulsion in response to a time-temperature exposure of sel... | 02/15/1977 |
