A demulsifier includes the reaction product of a) a combination of a monoglyceride and polyethylene glycol (PEG), b) an acid having at least two carboxyl groups, a full or partial ester thereof, an anhydride thereof and combinations thereof, and c) optionally, a fatty acid, a fatty alcohol and combinations thereof. A method of demulsifying a water-in-oil or oil-in-water emulsion includes adding the demulsifier to the emulsion and separating the emulsion into an oil phase and a water phase.

A demulsifier includes the reaction product of a) a combination of a monoglyceride and polyethylene glycol (PEG), b) an acid having at least two carboxyl groups, a full or partial ester thereof, an anhydride thereof and combinations thereof, and c) optionally, a fatty acid, a fatty alcohol and combinations thereof. A method of demulsifying a water-in-oil or oil-in-water emulsion includes adding the demulsifier to the emulsion and separating the emulsion into an oil phase and a water phase.

A method for breaking an emulsion may include contacting the emulsion with an emulsion-breaking solution to coalesce a dispersed phase and obtain a discrete boundary between an aqueous phase and an oleaginous phase. The emulsion may include a continuous phase and a dispersed phase dispersed within the continuous phase. The emulsion breaking solution includes an emulsion breaking compound that includes carbonate-link monomers and ether-link monomers. The carbonate-link monomers and ether-link monomers may be independently substituted with substituted or unsubstituted (C.sub.1-C.sub.50) linear or branched hydrocarbyl, substituted or unsubstituted (C.sub.3-C.sub.50) cyclohydrocarbyl, substituted or unsubstituted (C.sub.4-C.sub.50) aryl, —NH.sub.2, alkyl amines, alkoxylated amines, and substituted or unsubstituted (C.sub.1-C.sub.50) linear or branched heterohydrocarbyl.

A method for breaking an emulsion may include contacting the emulsion with an emulsion-breaking solution to coalesce a dispersed phase and obtain a discrete boundary between an aqueous phase and an oleaginous phase. The emulsion may include a continuous phase and a dispersed phase dispersed within the continuous phase. The emulsion breaking solution includes an emulsion breaking compound that includes carbonate-link monomers and ether-link monomers. The carbonate-link monomers and ether-link monomers may be independently substituted with substituted or unsubstituted (C.sub.1-C.sub.50) linear or branched hydrocarbyl, substituted or unsubstituted (C.sub.3-C.sub.50) cyclohydrocarbyl, substituted or unsubstituted (C.sub.4-C.sub.50) aryl, —NH.sub.2, alkyl amines, alkoxylated amines, and substituted or unsubstituted (C.sub.1-C.sub.50) linear or branched heterohydrocarbyl.

This invention provides a concentrated demulsifier composition comprising A) at least 50 wt.-% of a demulsifier, selected from the group consisting of a polymeric nonionic oil-soluble demulsifier for mineral oils, and an alkyl aryl sulphonic acid or its salt, and mixtures thereof, B) 0.1 to 20 wt.-% of a surfactant selected form anionic, cationic, zwitterionic and nonionic surfactants, the surfactant being different from the demulsifier, C) less than 20 wt.-% of a water-immiscible organic solvent, D) 3 to 49 wt.-% of a water-miscible organic solvent and E) 0 to 5 wt.-% of water.

This invention provides a concentrated demulsifier composition comprising A) at least 50 wt.-% of a demulsifier, selected from the group consisting of a polymeric nonionic oil-soluble demulsifier for mineral oils, and an alkyl aryl sulphonic acid or its salt, and mixtures thereof, B) 0.1 to 20 wt.-% of a surfactant selected form anionic, cationic, zwitterionic and nonionic surfactants, the surfactant being different from the demulsifier, C) less than 20 wt.-% of a water-immiscible organic solvent, D) 3 to 49 wt.-% of a water-miscible organic solvent and E) 0 to 5 wt.-% of water.

The present disclosure relates to demulsifier compositions and methods of resolving emulsions using the compositions. The demulsifiers include modified hydroxy-succinimide copolymers. For example, the demulsifiers may include ethoxylated or propoxylated hydroxy-succinimide copolymers. The demulsifier compositions are useful for resolving oil-in-water, water-in-oil, and complex emulsions of water and oil.

The present disclosure relates to demulsifier compositions and methods of resolving emulsions using the compositions. The demulsifiers include modified hydroxy-succinimide copolymers. For example, the demulsifiers may include ethoxylated or propoxylated hydroxy-succinimide copolymers. The demulsifier compositions are useful for resolving oil-in-water, water-in-oil, and complex emulsions of water and oil.

The present disclosure refers to the development of novel random bipolymers, which are comprised of alkyl acrylate and alkoxy alkyl acrylate monomers, as hydrophobic and hydrophilic components, respectively. These bipolymers are synthesized by means of semi-continuous emulsion polymerization, under strict conditions of monomer deficiency, to ensure the randomness and homogeneity of the chains. The application in dissolution of these random bipolymers has shown a dehydrating capacity superior to that of polyethers and phenolic resins, with the additional advantage of being soluble in crude oil. The random bipolymers show excellent performance as breakers of water-in-crude oil emulsions, coalescers of water droplets and clarifiers of the removed aqueous phase, and are chemically stable under acidic conditions.

The present disclosure refers to the development of novel random bipolymers, which are comprised of alkyl acrylate and alkoxy alkyl acrylate monomers, as hydrophobic and hydrophilic components, respectively. These bipolymers are synthesized by means of semi-continuous emulsion polymerization, under strict conditions of monomer deficiency, to ensure the randomness and homogeneity of the chains. The application in dissolution of these random bipolymers has shown a dehydrating capacity superior to that of polyethers and phenolic resins, with the additional advantage of being soluble in crude oil. The random bipolymers show excellent performance as breakers of water-in-crude oil emulsions, coalescers of water droplets and clarifiers of the removed aqueous phase, and are chemically stable under acidic conditions.