Demulsifiers in solvent bases for separating emulsions and methods for use thereof

FIELD: chemistry.

SUBSTANCE: invention relates to demulsifier compositions (versions) containing: (a) an anionic surfactant selected from a group consisting of alkylsulphosuccinates, alkyl phosphate esters, alkylphosphonic acids, salts thereof, and combinations thereof; and/or (b) a nonionic surfactant selected from a group consisting of ethylene oxide and propylene oxide copolymers, ethoxylated fatty acid esters and polyethylene glycol, terpene alkoxylates, alcohol ethoxylates, modified alkanolamides, and combinations thereof; and (c) a solvent base composition containing a mixture of dibasic esters. The present invention also relates to methods of breaking oil and water emulsions (versions).

EFFECT: obtaining solvent bases for use in demulsifier compositions, which have less toxicity and are environmentally safer.

40 cl, 6 tbl, 2 dwg

 

CROSS REFERENCES TO RELATED APPLICATIONS

This bid is partially complementary to the patent application U.S. serial number 12/191,130, filed on August 13, 2008, which claimed priority to provisional patent application U.S. serial number 60/955,551, filed August 13, 2007

The technical FIELD

This invention in General relates to emulsion type water in oil and oil in water and their respective solvent bases containing demulsifying composition having low toxicity, and which are safe for the environment for use in breaking emulsions in crude oil. More specifically, this invention relates to compositions containing anionic surfactant and nonionic surfactant in a solvent basis, containing a mixture of esters of dibasic acids.

The LEVEL of TECHNOLOGY

Natural resources such as gas, oil, minerals and water, which are found in underground formations can be recovered by drilling shafts in these formations. Emulsion containing oil and water, usually found in the extraction, production and refining. Is often necessary to separate the water from the oil to effectively produce oil for further processing or purification. The prior art numerous demo igatory removal of water from such emulsions.

Demulsifiers usually consist of one or more surfactants dispersed in the solvent system, and can be obtained, for example, from alcohols, fatty acids, fatty amines, glycols, and condensation products of alkyl phenols. System of solvents, in turn, in General, contain aromatic distillates, including, for example, 1,2-xylene, 1,3-xylene and 1,4-xylene, which can have a negative impact on health and are not environmentally friendly. In particular, these solvents can have a high content of volatile organic compounds (VOCS)that may not meet applicable regulatory documents relative to the LOS. Such systems are solvents that contain solvents on the basis of aromatic substances, are becoming less desirable as alternative "green" or environmentally friendly solvents are becoming more predominant for use for different purpose. Therefore, there is a need to dissolve the grounds for the application in to demilgechi that will have less negative impact on the environment, human health, etc., for example, which will have lower levels of toxicity and the content of volatile organic substances.

Among the ways of demilgechi untreated the military oil using this time, often used in electrostatic separation, gravity separation, centrifugation, and separation by hydrocyclone. In such ways, the wash water is added until the water content in crude oil is in the range from about 4% to about 15% by volume, and chemical de-emulsifying composition is added so that the oil and water phases can be separated using the methods of separation known from the prior art.

Effective demongate requires the addition of chemical demulsifying composition to the wash water or crude product before applying an electrostatic field or centrifugal forces to the emulsion of the crude oil. Crude oil containing large amounts of asphaltenes and naphthenic acids, in General, is called heavy crude oil and its hard to demulsibility. This crude oil requires specialized demulsifiers for effetively demilgechi. Many demulsifiers contain phenolic group in its chemical structure. Similarly, many of dissolving the base in which the emulsion is mixed or dispersed, contain benzyl or fanilow group. In some cases, desirable are demulsifiers and solvent base, to the which do not contain such groups, and which are effective for the crude oil containing asphaltenes and naphthenic acids.

Environmental impact of extracting the crude oil away from the shore attracts more attention and is the subject of observations of regulatory agencies, and the public. The bodies of state regulation in the sphere of ecology, both national and international, has determined that the demulsifiers containing Nonylphenol alkoxylate and related compounds, have a negative impact on the marine environment. Therefore, there is a need in the crude oil demulsifiers, which will have less negative impacts on the environment, for example, have lower levels of toxicity, especially in marine environments.

Application for U.S. patent, publication number 2006/0135628 issued by Newman et al., on June 22, 2006, represents the composition of the emulsion containing the copolymer poly(tetraethyleneglycol) and alkalophiles associated with poly(tetramethylene glycol) bifunctional agent combinations. U.S. patent No. 6294093 issued by Selvarajan et al., September 25, 2001, provides water demolicious compositions with reduced toxicity or Flammability. Application for U.S. patent publication number 2002/0161059 issued by Varadaraj et al., October 31, 2002, describes a demulsifying composition comprising an additive on the Nove alkylaromatic sulfonic acid for desalting crude oil. U.S. patent No. 6599949 issued by Varadaraj et al., July 29, 2003, describes demolicious compositions based on aromatic sulfonic acid, and specifically, an additive based on the alkylaromatic sulfonic acid and additional additives based solvent. Application for U.S. patent publication number 2006/0260815 issued Dahanayake et al., November 23, 2006, describes samoraspadayutsya foaming compositions containing anionic surfactant and nonionic surfactant, including sulfosuccinate and sulfosuccinate.

Publication of international application no WO 2000/012660 issued by Forschungszentrum Julich GMBH, March 9, 2000, describes a method of increasing the efficiency of surfactants by adding the block copolymer. In General, polymeric demulsifiers are used at high levels.

Thus, there is a need for improved environmentally friendly demulsifying compositions containing low levels of surfactants in an environmentally friendly solvent basis.

The INVENTION

Unexpectedly it was found that the emulsion containing alkylsulfonate, alkylphosphonate acid, and their salts, effective at low concentrations. It was also unexpectedly found that the introduction of such demulsifier in particular the e solvent base, described in this application, improve, or enhance the operational characteristics of such demulsifiers.

In one aspect this invention is a demulsifying composition comprising (a) a demulsifier, in General containing one or more anionic surfactants and/or one or more nonionic surfactants; and (b) solvent-based, containing a mixture of esters of dibasic acids.

In another aspect, the invention is a demulsifying composition comprising: (a) anionic surfactant selected from the group consisting of alkylsulfonates, alkylphosphonic acids, their salts, and combinations thereof; (b) non-ionic surfactants selected from the group consisting of ethyleneoxide/propyleneoxide copolymers, ethoxylated esters of fatty acids of polyethylene glycol, terpene alkoxylates modified alkaloidal, and combinations thereof; and (C) the composition of the solvent base containing a mixture of esters of dibasic acids, the mixture contains either (i) a mixture of esters alilovic adipic, glutaric and succinic digisat, or (ii) isomers of alkyl adipate.

In some versions of the anionic surfactant is present in amount from about 5% to 95% by weight of just over OSTO-active substances, while the other versions of the nonionic surfactant is present in amount from about 5% to 95% by weight of total surfactant.

Usually, the anionic surfactant contains alkylphosphonic acid, lauriestonof acid, their salts, or combinations thereof. More typically, the anionic surfactant is dialkilsuljfoksidih sodium.

Typically, the nonionic surfactant contains ethylenoxide/propyleneoxide copolymer selected from ethylenoxide/propylenoxide of alkoxylates, ethylenoxide/propyleneoxide block copolymers, or ethylenoxide/propylenoxide reversible copolymers.

Typically, the solvent composition framework contains adducts of alcohol and linear digisat, where the adducts have the formula R7-OOC-A-COO-R7where R7individually contains C1-C8alkyl group, and more often, ethyl, methyl, residues of at least one linear alcohol containing 4 carbon atoms, or at least one linear or branched alcohol containing at least 5 carbon atoms, and a represents the formula -(CH2)4-, -(CH2)3and -(CH2)2-.

In an additional embodiment, the composition is solvent base contains Duchy linear and/or branched digisat, where the adducts have the formula R3-OOC-A-COO-R4where R3and R4are the same or different alkyl groups, typically, C1-C8alkyl group, and more often, stands, ethyl, propylene, isopropyl, bootrom, isobutyl, n-bootrom or isoamyl, where A is A branched or linear hydrocarbon. Usually, a is a hydrocarbon isomers groups containing 4 carbon atoms.

In another aspect, the invention provides demulsifying composition comprising: (a) or (i) anionic surfactant selected from the group consisting of alkylsulfonate, alkylphosphonic acid, their salts, and combinations thereof, or (ii) a nonionic surfactant selected from the group consisting of ethyleneoxide/propyleneoxide copolymers, ethoxylated esters of acids of polyethylene glycol, terpene alkoxylates, and combinations thereof; and (b) the composition of the solvent base containing a mixture of esters of dibasic acids. In one embodiment, the anionic surfactant is dialkilsuljfoksidih sodium, octylphosphonic acid, lauriestonof acid, and their salts, and combinations thereof.

In one embodiment, the mixture contains approximately 9-11% by weight of the mixture of diapir formula:

priblizitel is but 86-89% by weight of the mixture of diapir formula

and

approximately 1-3% by weight of the mixture of diapir formula

where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

In another embodiment, the mixture contains approximately 20-28% by weight of the mixture of diapir formula:

about 59-67% by weight of the mixture of diapir formula:

;

and

about 9-17% by weight of the mixture of diapir formula:

where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

In an additional aspect this invention is a method of breaking the emulsion of oil and water, comprising: contacting the emulsion with a demulsifying composition containing (a) an anionic surfactant selected from the group consisting of alkylsulfonate, alkylphosphonic acid, their salts, and combinations thereof; (b) a nonionic surfactant selected from the group consisting of ethyleneoxide/propyleneoxide copolymers, ethoxylated fatty acids of polyethylene glycol, terpene alkoxylates, modified alkanolamides, and combinations thereof; and (C) the composition of the solvent base containing a mixture of dibasic esters Ki the lot, described in this application.

In another aspect, the invention is a method of breaking the emulsion of oil and water comprising contacting the emulsion with a demulsifying agent containing either (i) an anionic surfactant selected from the group consisting of alkylsulfonate, alkylphosphonic acid, their salts, and combinations thereof, or (ii) a nonionic surfactant selected from the group consisting of ethyleneoxide/propyleneoxide copolymers, ethoxylated fatty acids of polyethylene glycol, terpene alkoxylates, and combinations thereof; and (C) the composition of the solvent base containing a mixture of esters of dibasic acids, described in this application.

In one embodiment, the anionic surfactant is dialkilsuljfoksidih sodium. In another embodiment, the nonionic surfactant is ethylenoxide/propyleneoxide copolymer selected from the group consisting of ethyleneoxide/propyleneoxide of alkoxylates, ethylenoxide/propyleneoxide block copolymers, and ethylenoxide/propylenoxide reversible copolymers.

BRIEF DESCRIPTION of FIGURES

Figure 1 shows the effectiveness of the selected emulsion at various concentrations and time at room tempera is ur.

Figure 2 shows the percentage of water remaining in the emulsion of the type oil-in-water after separation using selected demulsifiers.

DETAILED description of the INVENTION

This invention in General relates to the demulsifying composition of the crude oil (also known as "antimalware") and to decay and other "destruction" of the emulsions, which are usually formed during the extraction or purification of the crude oil. More specifically, this invention, in General, relates to emulsion type water in oil", with low toxicity and containing one or more anionic surfactants and/or nonionic surfactants in a solvent base containing a mixture of esters of dibasic acids.

In order to help understand the invention, presents the following non-limiting definitions.

As used in this application, "emulsion" shall mean a composition, usually a liquid or gel containing two or more immiscible phases in which the first phase ("dispersed phase) dispersed in the second phase ("dispersed phase"). Emulsions of oil and water include emulsion-type water in oil (water dispersed in oil) and the emulsion of the type oil-in-water (oil dispersed in water). As used in this application, any reference n the "emulsion" should be interpreted as such, which is equally applied as emulsions water in oil and emulsion of the type oil-in-water". As used in this application, the term "inverted emulsion refers to an emulsion of the type oil-in-water".

The terms "surfactant" and "emulsifier" are vzaimozavisimy and in General relate to a moisturizing substance that lowers the surface or interfacial tension between two liquids. The use of surfactants allows to obtain a dispersion of one phase in another.

As used in this application, the term "demulsifier" will mean a surfactant or combination of surfactants, which inhibit or prevent the dispersion in the emulsion, thus allowing easier separation of immiscible liquids.

The term "destruction of the emulsion" will refer to the process of destruction stable surface between the dispersion and the dispersed phase of the emulsion. In General, it is acceptable that the high molecular weight surfactants and water soluble polymers will replace low-molecular-weight surfactants on the boundary surface. "Antimalware designed so that they are similar in chemical properties, for emulsification surfactants, but have significant the additional high molecular weight allowing them to destroy the surface layer and to destabilize the emulsion. See, for example, Brady, J.. and G.. Humiston, General Chemistry, Principles and Structure, John Wiley and Sons, Inc., New York (1982).

As used in this application, the term "oil" shall have regard to and be used interchangeably with the terms "crude oil" or "oil."

The term "water" used in this application to refer to water to obtain demulsifiers and water, which is present in oil emulsions. Additionally, water may contain dissolved organic salts, organic acids, organic acid salts, inorganic salts, or combinations thereof. Examples are potassium chloride, ammonium chloride and ammonium chloride.

The term "salt water" is used in this application to refer to unsaturated salt solutions and saturated salt solutions, including mineral water and sea water.

"Water" represents the removal of unsuitable substances (e.g. crude oil) from the water before discharge. The oil can be removed using a combination of emulsion and mechanical methods, as described in this application. Demulsifiers are judged by the analysis of the inversion method and the sealed chamber of the crude oil. Measurement of water transparency is produced by processing the obtained water by chemical analysis of the camera, bench model flow cells, and analysis by shaking for determining the optimal demilgechi. Measurement of water transparency can be made visually, by means of spectroscopic methods, using turbidimetric methods, or by any other method known to specialists in this field. Transparency of oil can be measured by determining the water content conductometric methods, according to the Karl Fischer method, or any other methods known to experts in this field. When choosing demulsifiers it is important that the wastewater meets the specifications of the process of abstraction.

Surfactants used in the demulsifying composition for coalescence of drops of oil. Without being bound by any theory, I believe that surfactants destroy the interface oil-water and allow merging of smaller drops of oil with larger drops of oil and facilitate their separation from the water. Useful surfactants include anionic and non-ionic compounds that can be applied individually or in a mixture with one or more solvent bases. Anionic and non-ionic surfactant is added in concentrations that range, typically amounting to arr is siteline from 50 ppm (ppm) to 10,000 ppm volume of the liquid component, and more often from about 125 ppm to 2000 ppm volume of the liquid component. Surfactants in accordance with this invention can be applied individually or in mixtures with one or more solvent bases.

Demulsifiers for use in demulsifying compositions in accordance with this invention can be applied to prevent the formation, destruction or separation of emulsions water in oil or oil in water") are usually emulsions of crude oil. Such demulsifiers can be applied for breaking emulsions of hydrocarbons obtained from purified mineral oil, gasoline, kerosene, etc. these demulsifiers and/or demolicious composition can be applied at any time during the extraction process and/or production of mineral oil, well-known from the prior art. For example, the present emulsion can be introduced into the wellhead through the downhole injection, continuously or periodically, or anywhere between the mouth of the well and the final oil storage.

In one embodiment, the demulsifier contains: anionic surfactant selected from the group consisting of alkylsulfonate, alkylphosphonic acid, and their salts; and nonionic surface-active agent selected from the gr is PPI, consisting of ethyleneoxide/propyleneoxide copolymers, ethoxylated fatty acids of polyethylene glycol, terpene alkoxylates and modified alkanolamides. Combinations of surfactants can also be used in this invention. In specific designs, the anionic surfactant may be present in amounts from about 5% to 95% by weight of total surfactant, and nonionic surfactant can be present in an amount from about 5% to 95% by weight of all surfactants. In some versions anionic. surfactant is present from about 10% to 80% by weight of total surfactant and the nonionic surfactant is present from about 10% to 80% by weight of total surfactant.

Anionic surfactants

Anionic surfactants useful in the demulsifying compositions in accordance with this invention include, but are not limited to the above, alkylsulfonate, alkylphosphate esters, alkylphosphonate acid, and their salts, and combinations thereof. Typical anionic surfactants are sulfosuccinate, such as dialkyl focaccina sodium, which can be used as anionic surfactants in powder form or in solution. In other variants of the present invention, anionic surface-active agent can be: alkylphosphonate acid with alkyl group containing from about 5 to 15 carbon atoms which may be branched or linear, saturated or unsaturated; laurifolia acid, salts of such alkylphosphonic acids, salts laurelrosenhall acid, and combinations thereof. In one embodiment, alkylphosphonic acid is a product which is sold under the trade name Rhodafac ASI (Rhodia Inc., Cranbury, NJ).

Acceptable anionic surfactants include the following structural formula:

Alkylphosphonic acid and salts

In the above structure, R1represents alkyl and may be branched or linear; "M" represents hydrogen, alkali metal, e.g. sodium or potassium, or ammonium salt; R1typically contains from 5 to 20 carbon atoms, more typically from 5 to 16 atoms, most typically from 8 to 12 carbon atoms.

Alkylsulfonate

In the above structure, R2selected from the group consisting of alkyl, -CH2CHsub> 2OH, aryl, alkaryl, alkoxy, alkylacrylate, arylalkyl, acylaminoalkyl and acylaminoalkyl.

In the versions in which R2represents an alkyl group typically contains from about 5 to about 20 carbon atoms and more typically contain from about 10 to about 18 carbon atoms. In the versions in which R2represents an aryl group typically contains phenyl, diphenyl, diphenyl ether, or naphthalene fragment. M represents hydrogen, alkali metal such as sodium or potassium, or ammonium salt. "M" represents, typically, an alkaline metal such as sodium or potassium, more typically sodium.

Non-ionic surfactants

Non-ionic surfactants for use in the demulsifying composition in accordance with this invention include, but are not limited to the above, linear copolymers, block copolymers, and converts the copolymers of ethylene oxide/propylene oxide; ethoxylated fatty acids of polyethylene glycol/polypropylenglycol; esters of fatty acids; esters of glycerin, ethoxylated esters of fatty acids glycol; ethoxylated every fatty acids of polyethylene glycol; terpenic alkoxylate modified alkanolamide and esters sorbitan.

Typical nonionic surface is surface-active substances are ethylenoxide/propyleneoxide copolymers, the ethoxylated fatty acid esters of glycol, an ethoxylated every fatty acids of polyethylene glycol, ethoxylate alcohol, terpene alkoxylate and modified alkaloide. More typical nonionic surfactants are ethylenoxide/propyleneoxide copolymers, ethoxylated every fatty acids of polyethylene glycol, terpene alkoxylates, and combinations thereof.

Acceptable non-ionic surfactants include surfactants having the structural formulas below. Acceptable ethylenoxide/propyleneoxide copolymers can be selected from the group consisting of ethyleneoxide/propyleneoxide block copolymers, ethylenoxide/propylenoxide of alkoxylates, and ethylenoxide/propylenoxide facing copolymers.

Surface-active agent based on ethylene oxide/propyleneoxide block copolymer

In one embodiment, "o," "m," and "n" is from about 1 to about 50. In an alternative embodiment, the nonionic surfactant is a product which is sold under the trade name ANTAROX® L-64 (Rhodia Inc., Cranbury, NJ).

Surface-active agent based on ethylene oxide/propylenoxide facing copolymer

In one embodiment, "m" is from about 10 to 60, and "n" is from about 0 to 15. In another embodiment, "m" is from about 20 to 40, and n is from about 4 to 15. In an alternative embodiment, the nonionic surfactant is a product which is sold under the trade name ANTAROX® 31R1 (Rhodia Inc., Cranbury, NJ)

Ethylenoxide/propylenoxide alkoxylate

In one embodiment, d is approximately from 1 to 10, and "e" is approximately from 1 to 50. R3represents a hydrocarbon chain, typically containing from about 1 to 22 carbon atoms, more often from about 8 to 14 carbon atoms and may be branched or unbranched and saturated or unsaturated.

In another embodiment, d is approximately from 2 to 8, and "e" is approximately 5 to 12. In an alternative embodiment, the nonionic surfactant is a product which is sold under the trade name ANTAROX® BL-14 (Rhodia Inc., Cranbury, NJ).

The ethoxylated every fatty acids of polyethylene glycol

In some embodiments, the execution of R4is dared or a hydrocarbon chain, containing from about 10 to 22 carbon atoms which may be branched or unbranched and saturated or unsaturated, and which are selected from the group consisting of hydrogen, alkyl, alkoxy, aryl, alkaryl, alkylacrylate, arylalkyl, acylaminoalkyl, and acylaminoalkyl. R5typically represents a hydrocarbon chain containing from about 1 to 22 carbon atoms which may be branched or unbranched and saturated or unsaturated, and which are selected from the group consisting of alkyl, alkoxy, aryl, alkaryl, alkylacrylate, arylalkyl, acylaminoalkyl, and acylaminoalkyl. In the versions in which R4and R5represent alkyl groups typically contain from about 5 to 20 carbon atoms, usually contain from about 10 to 18 carbon atoms. In the versions in which R4and R5represent aryl groups typically contain phenyl, diphenyl, diphenyl ether, or naphthalene fragment. In these versions of "x" is from about 1 to 20. In certain embodiments of the execution patterns are mono and diesters.

In an alternative embodiment, the nonionic surfactants are products dioleate ether PEG 400, which is sold under the trade the name ALKAMUS® 400DO (Rhodia Inc., Cranbury, NJ).

Terpene alkoxylate

Terpene alkoxylate are surface-active substances on the basis of terpene alkoxylates obtained from renewable raw materials such as α-pinene and-pinene, and contain C-9 bicyclic alkyl hydrophobic and polyoxyalkylene links in a block distribution, or randomly mixed, or inhomogeneously distributed along the hydrophilic chain. Surfactants based on terpene alkoxylates described in application for U.S. patent publication number 2006/0135683 issued by Adam et al., on June 22, 2006, which is incorporated in this application by reference.

Typical terpene alkoxylate are surface-active substances on the basis of alkoxyethanol and have the General formula:

or

where R6and R7represent, individually, hydrogen, CH3or C2H5; "n" is from about 1 to about 30; "m" is from about 0 to 20; and p is from about 0 to 20. Links "n", "m" and/or "p" can have a block distribution, or can be mixed randomly, or inhomogeneously distributed along the chain.

In another embodiment, R6represents CH3; "n" is from about 20 to priblizitelen is 25; "m" is from about 5 to about 10. In another embodiment, R6and R7represent, individually, CH3; "n" is from about 1 to about 8; "m" is from about 2 to about 14; and "p" ranges from about 10 to about 20.

In an alternative embodiment, the nonionic surfactant is a product that is sold under the trade name RHODOCLEAN® HP (Rhodia Inc., Cranbury, NJ).

The alcohol ethoxylates

Typically, R7represents hydrogen or a hydrocarbon chain containing from about 5 to 25 carbon atoms, more typically from about 7 to 14 carbon atoms, most typically, from about 8 to 13 carbon atoms which may be branched or unbranched and saturated or unsaturated, and is chosen from the group consisting of hydrogen, alkyl, alkoxy, aryl, alkaryl, alkylacrylate and arylalkyl. Typically, "n" is an integer from about 1 to 30, more typically an integer from about 2 to 20, and most typically an integer from about 3 to 12.

In an alternative embodiment, the alcohol ethoxylate sold under the trade name Rhodasurf 91-6 (Rhodia Inc., Cranbury, NJ).

Modified alkanolamide

Deshaus oligatory demulsifying compositions in accordance with this invention may contain modified alkanolamide as nonionic surfactants. In one embodiment, the modified alkanolamide is a product which is sold under the trade name ANTAROX AG 5 (Rhodia Inc., Cranbury, NJ).

Demulsifiers in accordance with this invention can be applied individually or in combination with any number of additional demulsifiers described in this application or known from the prior art, including, but not limited to the above, the condensation products of alkylphenolethoxylate, such as alkyl phenol formaldehyde resinous alkoxylate, polyalkylene glycols, including polypropylene glycols and prekrasno-stitched polypropylenglycol, organic sulfonates, alkoxysilane alcohols, alkoxysilane polyols, fatty acids, complex resinous esters, alkoxysilanes complex amines, alkoxysilane polymeric amines, etc. Thus, for example, the demulsifier may contain alkylsulfonate, such as dialkilsuljfoksidih sodium, and ethylenoxide/propyleneoxide copolymer. Alternatively, as an example, the demulsifier may contain alkylsulfonate and ethoxylated fatty acid with ethylene glycol.

Demulsifiers in accordance with this invention can be also applied in combination with corrosion inhibitors, viscosity reducers, and other chemical preservatives, which are used n the and production of crude oil, its cleaning and chemical processing. If necessary, can be used many traditional additives that do not have a negative impact on the performance of demulsifier. For example, optional additives may include bactericides, etc.

In the embodiment of the present invention demulsifying composition obtained by mixing water with a surface-active agent containing anionic surfactant, nonionic surfactant, or a combination of both. The water that is used for the formation of demulsifier in accordance with this invention can be fresh water or salt water. Additionally, water may contain dissolved organic salts, organic acids, organic acid salts, inorganic salts, or combinations thereof.

Solvent base

In one embodiment, the demulsifying composition contains a solvent basis. Can be applied to the standard mixing procedure known from the prior art, since the heat of solution and the special conditions of mixing are not usually required. Of course, when used in the extreme cold, for example, as was discovered in Alaska or Siberia, can be useful conventional heat treatments. Typically, the boiling point of the mixture of esters biaxial the different acids in certain versions of the present invention exceeds 275°C.

In accordance with one embodiment of the present invention, a mixture of esters of dibasic acids are typically obtained from one or more by-products in the production of polyamides, such as polyamide 6,6. In one embodiment, a solvent basis in accordance with this invention comprises a mixture of esters adipinic of decislon, glutaric digisat, and amber decislon. In another embodiment, a solvent basis in accordance with this invention comprises a mixture of esters adipinic of decislon, methylglutaconic of decislon, and atlantanap of decislon.

In accordance with one embodiment of the present invention, a mixture of esters of dibasic acids corresponding to one or more side products upon receipt of adipic acid or diamine, which are the monomers used in the production of polyamide. For example, the esters obtained by the esterification of one of the side products upon receipt/reaction of adipic acid which contains, based on the weight of the mixture, from about 15% to 33% of succinic acid, from about 50% to 75% of glutaric acid, or from about 5% to 30% of adipic acid. As another example, dialkyl ethers are obtained by the esterification of one of the by-product during the production of/reaction of hexamethylenediamine were the, which in General contains, based on the weight, from about 30% to 95% of methylglutaric acid, from about 5% to 20% adelantarnos acid and from about 1% to 10% adipic acid. It is clear, however, that the acid part can be obtained from such dibasic acids as adipic, succinic, glutaric, oxalic, malonic, Emelyanova, attendancea and azelaic acid, and mixtures thereof.

In some versions the mixture contains adducts of alcohol and linear acids, where the adducts have the formula R-OOC-A-COO-R, where R represents ethyl, n-butyl or isoamyl, and A represents the formula -(CH2)4-, -(CH2)3and -(CH2)2-.

In other versions of the mixture contains adducts of alcohol, usually ethanol, and linear acids, where the adducts have the formula R1-OOC-A-COO-R2where at least part of R1and/or R2are remnants of the at least one linear alcohol containing 4 carbon atoms, and/or at least one linear or branched alcohol containing at least 5 carbon atoms, and where A is divalent linear hydrocarbon. In some embodiments, execution of A is one of the mixes -(CH2)4-, -(CH2)3and -(CH2)2-. In another embodiment, R1and R2individually contain uglevodorov the ing group, containing from 3 to 8 carbon atoms; however, R1and R2individually do not contain ISO-butyl group.

R1and R2can also be individually contain a group of simple glycol ether. Typically, a simple glycol ether has the formula:

where R5 contains H, or C1-C20alkyl, aryl, alcylaryl or arylalkyl group; n is an integer from 1 to 7; and R6contains H or a metal group. Typically, R5represents a C1-C10group, more typically, C1-C6the group, including but not limited to the above, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-amyl or n-hexyl. Typically, "n" is an integer from 1 to 5, and more typically, "n" is an integer 1 or 2.

In another embodiment, R1and/or R2groups can be linear or branched, cyclic or acyclic,1-C20alkyl, aryl, alcylaryl or arylalkyl groups. Typically, R1and/or R2groups can be C1-C8groups, for example, groups selected from metal, acalnych, n-sawn, ISO-propyl, n-Budilnik, isobutylene, n-amiling, n-hexylene, tsiklogeksilnogo, 2-ethylhexyl and isooctyl groups and mixtures thereof. For example, R1the/or R 2can be both separately or ethyl groups, R1and/or R2can be both or separately h-sawn groups, R1and/or R2can be both separately or ISO-propyl groups, R1and/or R2can be both or separately h-utilname groups, R1or R2can be individually isobutylene groups, R1and/or R2can be both or separately h-Umilenie groups, or R1and/or R2may be mixtures thereof (for example, if they contain a mixture of esters of dibasic acids).

In additional variants solvent basis in accordance with this invention may contain mixtures containing adducts of branched acids, where such adducts have the formula R3-OOC-A-COO-R4where R3and R4are the same or different alkyl groups and A is A branched or linear hydrocarbon. Typically, A contains the isomers of C4of hydrocarbons. Examples include adducts, where R3and/or R4can be linear or branched, cyclic or acyclic, C1-C20alkyl, aryl, alcylaryl or arylalkyl groups. Typically, R3and R4independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, n-b is stated, ISO-butyl, ISO-amyl, and fusel oil.

Compounds derived from fusel oil, is known and described, for example, in "The Use of Egyptian Fusel Oil for the Preparation of Some Plasticizers Compatible with Polyvinyl Chloride", Chuiba et al., Indian Journal of Technology, Vol.23, August 1985, pp.309-311, which describes the reaction product of fusel oil, having a boiling point of from 110 to 136°C and pure adipic or sabatinovka acid.

R3and R4can also be individually contain a group of glycolic simple ether. Typically, the group of glycolic simple ether has the formula:

where R5contains H, or C1-C20alkyl, aryl, alcylaryl or arylalkyl group; n is an integer from 1 to 7; and R6contains H or a metal group. Typically, R5is C1-C10group, more typically, C1-C6group, including, but not limited to the above methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-amyl or n-hexyl. Typically, "n" is an integer from 1 to 5, and more typically, "n" is an integer 1 or 2.

In yet another embodiment, the solvent basis in accordance with this invention contains a composition based on diapir(diesters) dicarboxylic acids of the formula R5-OOC-A-COO-R6where group A is divalent alkylenes group, typically in the range in the middle is m, from 2.5 to 10 carbon atoms. R5and R6group, which may be identical or different, represent a linear or branched, cyclic or acyclic, C1-C20alkyl, aryl, alcylaryl or arylalkyl group.

In certain more specific variants mixture contains:

fluids formulas I:

;

fluids of formula II:

; and

fluids of formula III:

.

R1and/or R2can individually contain hydrocarbon containing from about 1 to about 8 carbon atoms, typically methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl. Additionally, R1and/or R2can individually contain hydrocarbon group derived from fusel oil.

R1and R2can also be individually contain a group of glycolic simple ether. Typically, the group of glycolic simple ether has the formula:

where R5contains H, or C1-C20alkyl, aryl, alcylaryl or arylalkyl group; n is an integer from 1 to 7; and R6contains H or a metal group. Typically, R5represents a C1-C10group, more typically, C1-C6group, including, but not limited to the above methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-amyl or n-hexyl. Typically, "n" is an integer from 1 to 5, and more typically, "n" is an integer 1 or 2.

In the above variants mixture typically contains, by mass mixture) (i) from about 15% to about 35% of diapir formula I, (ii) from about 55% to about 70% of diapir formula II, and (iii) from about 7% to about 20% of diapir formula III, and more typically, (i) from about 20% to about 28% of diapir formula I, (ii) from about 59% to about 67% of diapir formula II, and (iii) from about 9% to approximately 17% of diapir formula III. You can also mention Rhodiasolv® RPDE (Rhodia Inc., Cranbury, NJ), Rhodiasolv® DIB (Rhodia Inc., Cranbury, NJ) and Rhodiasolv® DEE (Rhodia Inc., Cranbury, NJ).

In certain other versions of the mixture contains:

fluids of formula IV:

;

fluids formulas V:

; and

and

fluids of formula VI:

R1and/or R2can individually contain hydrocarbon containing from about 1 to about 8 carbon atoms, typically methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl, or isoamyl. Additionally, R1and/or R2can individually contain uglevodorov the ing group, obtained from fusel oil.

R1and R2can also be individually contain a group of glycolic simple ether. Typically, the group of glycolic simple ether has the formula:

where R5contains H, or C1-C20alkyl, aryl, alcylaryl or arylalkyl group; n is an integer from 1 to 7; and R6contains H or a metal group. Typically, R5represents a C1-C10group, more typically, C1-C6the group, including but not limited to the above methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-amyl or n-hexyl. Typically, "n" is an integer from 1 to 5, and more typically, "n" is an integer 1 or 2.

In the above variants mixture typically contains, by mass mixture) (i) from about 5% to about 30% of diapir formula IV, (ii) from about 70% to about 95% of diapir formula V, and (iii) from about 0% to about 10% of diapir formula VI.

More typically, the mixture typically contains (by weight of the mixture): (i) from about 6% to about 12% of diapir formula IV, (ii) from about 86% to about 92% of diapir formula V, and (iii) from about 0.5% to about 4% of diapir formula VI. Most typically, the mixture contains by weight of the mixture): (i) approximately 9% of diapir fo the mules IV, (ii) approximately 89% of diapir formula V, and (iii) approximately 1% of diapir formula VI. Can upomyanuti Rhodiasolv® IRIS (Rhodia Inc., Cranbury, NJ) and Rhodiasolv® DEE/M (Rhodia Inc., Granbury, NJ).

While in some versions solvent base contains a mixture of esters of dibasic acids, it is clear that solvent base may contain additional components, such as additives and other solvents, as these additional components do not have a negative impact on the performance of demulsifier.

The following examples in which all parts and percentages are given by weight, unless otherwise stated, are given to illustrate several, but not all, embodiments of the present invention.

In one embodiment of the present invention, the initial pH value of the demulsifying composition can be raised or lowered to give stability. The decrease in pH can be carried out by adding acid and/or buffers. Similarly, it may be acceptable adding bases and/or buffers to increase the pH value of the demulsifying composition.

This invention additionally provides a method of destruction of the emulsion containing oil and water. This method comprises contacting the emulsion with any of the demulsifiers described in this application, or with any of the combination of such demulsifiers, in any solvent the basis described in this application. Therefore, in one embodiment, the method comprises contacting the emulsion with a demulsifying composition containing (a) an anionic surfactant selected from the group consisting of alkylsulfonate, alkylphosphonic acid, and the salts alkylphosphonic acid; (b) a nonionic surfactant selected from the group consisting of ethyleneoxide/propyleneoxide copolymers, ethoxylated fatty acids of polyethylene glycol, terpene alkoxylates, and modified alkanolamides; and (C) the composition of the solvent base containing a mixture of esters of dibasic acids. The esters of dibasic acids can contain any mixture described in this application, typically, (i) alkalemia esters of adipic, glutaric and succinic acids or (i) isomers of alkalidata.

For example, the method may include contacting the emulsion with a demulsifying composition composed of alkylsulfonate such as dialkilsuljfoksidih sodium, and ethylenoxide/propyleneoxide copolymer, a mixture of dimethylmethylphosphonate, dimethylarsinate and dimethyladipate. Alternatively, this method can also include contacting the emulsion with a demulsifying agent, composed of alkylsulfonate and ethoxylated LM is Noah acid with ethylene glycol.

Examples

The following examples are given to illustrate the production and properties of compositions of demulsifiers and should not be construed as limiting the scope of the present invention, if the formula of the present invention is not clearly specified otherwise.

To determine the potential of new demulsifiers for inverted emulsions of crude oil, some of the existing products from Rhodia Inc. (Cranbury, NJ) were subjected to screening and compared with the existing commercial crude oil demulsifiers. Analyzed products include the products sold under the trade names RHODOCLEAN HP, ANTAROX BL225, RHODASURF 91-6, GEROPON SDS, GEROPON GR/7, SOPROPHOR BSU, SOPROPHOR S/40P, ANTAROX L64, ANTAROX 31R1, ANTAROX BL214, RHODAFAC ASI, ALKAMULS 400DO, ANTAROX AG/5, and GEROPON BIS-SODICO 2 (Rhodia Inc., Cranbury, NJ). Other existing products include the products sold under the trade names EMULSOTRON JXZ and WITBREAK DRI, among others.

Table 1 shows the various anionic and nonionic surfactants and the percentage of water separation is achieved for each at concentrations of 2000 ppm component, the working time was 30 minutes at room temperature. "Y" indicates that the separation was observed, but the exact value has not been obtained.

100
Table 1
ID is ntification room Trade name of a surface-active substanceGeneral chemistry% water separation Level of 2000 ppm 30 minutes at room temperature
5Rhodoclean HPNopal-alkoxylate100
9Geropon SDSsulfosuccinate (powder)100
9GGeropon GR/7sulfosuccinate (in solution)100
11Soprophor BSUtridirectional ethoxylateY
12Soprophor S/40Ptridirectional ethoxylateY
16Antarox L64The EO-PO copolymer100
17Antarox 31R1The EO-PO copolymer100
18Antarox BL214The EO-PO copolymer
19Rhodafac ASIFofanova acid100
20Commercial surface-active substancecommercially available sample100
21Gymnasticslaurifolia acidY
22Emulsotron JXZoxyalkylated phenolic resin100
23Alkamuls 400DOPEG - dioleate100
28Witbreak DRIthe cured polyols100
32Antarox AG/5modified alkanolamide100
33Geropon Bis-sodico 2sulfosuccinateY

The Figure 1 shows how the products selected in Table 1, separate the crude oil at different is x working days at room temperature in comparison with a commercial surface-active substance/demulsifier. Shown are three different levels of concentration: 2000 ppm, 250 ppm, 125 ppm. The measurements were made at the operating times of the components of 0 minutes, 5 minutes, 20 minutes, and 60 minutes. Numbers along the x-axis refer to the identification numbers in Table 1, thus, identifying what demulsifiers, or a combination of demulsifiers used.

Table 2 shows how different mixtures of surfactants act as demulsifiers. These data were taken when the level of concentration of 250 ppm at room temperature at 0 minutes, 1 minute, 5 minutes, and 60 minutes of working time. The phase boundary and the transparency of the aqueous layer was observed visually.

The Figure 2 shows the percentage of water remaining in the oil layer after separation, specifically, the residual water remaining in the upper and middle layers separated oil. The measurements were performed for the upper and middle layers after 5 minutes of working time in the centrifuge at 76°F (25°C). Numbers along the x-axis refer to the identification numbers in Table 1, thus, identifying what the demulsifier or combination of emulsifiers used.

Table 2
A mixture of demulsifying surfactants at levels of 250 ppm
Identification numberProductsppm0 min1 min5 min60 minThe phase boundaryThe aqueous layer
0solvent00%0%0%0%--
9aGeropon SDS25093%100%100%100%cleartransparent
5-9aRhodoclean HP + Geropon SDS25050%100%100%100%mistyTransparent
9-17AGeropon SDS + Antarox31Rl250 75%100%100%100%cleartransparent
9-18aGeropon SDS + AntaroxBL21425083%100%100%100%cleartransparent
9-23aGeropon SDS + Alkamuls 400DO25050%75%83%100%mistytransparent
9-23 andGeropon SDS + Antarox AG/525033%57%83%100%mistytransparent
20ACommercial surfactant/demulsifier25050%100%100% 100%cleartransparent

Some of the existing solvent bases were subjected to screening to determine the potential for new demulsifying compositions for inverted emulsions of crude oil. Such solvent base is then mixed with one or more emulsifiers described in this application, and compared with demulsifiers in existing commercial solvent basis. Analyzed products include the products sold under the trade nazvaniya RHODOCLEAN HP, ANTAROX BL225, RHODASURF 91-6, DURAPHOS EHAP, ALBRITE IOAP, RHODOFAC ASI, ABEX 3010, ALKAMUS 400-DO (Rhodia Inc., Cranbury, NJ). Other analyzed existing products include the products sold under the trade names EMULSOTRON JXZ and WITBREAK DRI. Analyzed solvent base consisted of a mixture of esters of dibasic acids, sold under the trade names RHODIASOLV IRIS, RHODIASOLV DEE and DV8214 (Rhodia Inc., Cranbury, NJ).

Observed that the change in solvent base from existing commercial solvent bases in certain solvent base described in this application, exhibit unexpectedly superior performance for multiple emulsion. In General, it is expected that the change in solvent grounds will not influence or, at most, will have at least the minimum impact on the performance of demulsifiers.

The LIST of SYMBOLS
*Interface**Transparency
5S - clear5C - clear
4T - small globules4D - polluted
3P - waves3D+ is more polluted
2R - ragged2B - bad, the water is rendered
1W - wave1+ - Very poor
0no0- no is there

Data tables 3-6 were taken when the level of concentration of 250 ppm at room temperature. The Department of water after 4 hours, the phase boundary and water clarity was observed visually.

TABLE 3
DOSE: 250 PPM
TEMP.: 25 C
-Xylene/methanol solvent
#Name% Water separation (4 hours)The phase boundary*Transparency**
1Antarox L-647524
2Antarox BL214001
3Antarox AG/10055
4Alkamuls 400DO1005 4
5Abex 30107522
6EO-PO10033
7EO-PO10022
8Lauryl phosphoric acid001
9ERA000
10Antarox BL2257522
11Rhodoclean ASP7522
12Rhodoclean MSC9033
13Rhodoclean HP BL225 000
14Rhodoclean HP + Rodasurf 91-6000
15Antarox L62LF2512
16Antarox 25R2012
17EHAP000
18South Africa000
19Commercial surfactant/demulsifier10054
20Rhodoclean HP1011
21Rhodofac ASI5 01
22Antarox 31R11002
23Pentex 9910044
24Dissolvan 324510045
25Idle000

Commercially available xylene/methanol mixture was used as a baseline comparison against different solvent bases described in this application.

TABLE 4
Operational characteristics of demulsifiers in Rhodiasolv IRIS at 250 ppm
DOSE: 250 PPM
TEMP.: 25 C
Rhodiasolv IRIS
#the name % Water separation (4 hours)The phase boundary*Transparency**
13Rhodoclean HP + Antarox BL2255022
14Rhodoclean HP + Rhodasurf91-65022
1Rhodoclean HP4022

Compared to commercially available xylene/methanol solvent basis, Rhodoclean HP used individually and in combination with other surfactants (e.g., Antarox BL225 and Rhodasurf 91-6) showed improved performance with the use of Rhodiasolv IRIS. For example, the combination of demulsifier #13 contained, based on the total weight of the combination, from about 5% to about 95% Rhodoclean HP and from about 95% to about 5% Antarox BL225. The combination of demulsifier #14 contained based on the total weight of the combination, from about 5% to about 95% Rhodoclean HP and from about 95% to about 5% Rhodasurf 91-6. The demulsifier #20 contained only Rhodiasolv HP.

Specifically, such demulsifiers and combinations of demulsifiers unexpectedly showed improved performance in Rhodiasolv IRIS solvent-based, where the demulsifier #13 showed a 50% water separation, 2 in relation to the scale of transparency and 2 with respect to the interfacial scale. Similarly, the demulsifier #14 showed a 50% water separation, 2 in relation to the scale of transparency and 2 with respect to the interfacial scale. Additionally, the demulsifier #20 showed a 40% water separation, 2 in relation to the scale of transparency and 2 with respect to the interfacial scale.

In comparison, the demulsifier #13 in the xylene-methanol solvent basis showed 0% Department of water, 0 to the scale of transparency and 0 with respect to the interfacial scale. Similarly, the demulsifier #14 in the xylene-methanol solvent basis showed 0% Department of water, 0 to the scale of transparency and 0 with respect to the interfacial scale. Additionally, the demulsifier #20 in the xylene-methanol solvent basis showed a 10% Department of water, 1 in relation to the scale of transparency and 1 with respect to the interfacial scale.

TABLE 5
Operational characteristics of demulsifiers in Rhodiasolv DEE at 250 ppm
DOSE: 250 PPM
TEMP.: 25 C
Rhodiasolv DEE
#Name%Water separation (4 hours)The phase boundary*Transparency**
5Abex 301010055
17Duraphos ENAR10034
18Albrite IOAP10034
21Rhodafac ASI10043

Compared to commercially available xylene/methanol solvent based, anionic surfactants described in this application, in particular, phosphate demulsifiers (for example, Duraphos ENAR [specifically, the alkyl phosphate ester] Albrite and South Africa [specifically, the alkyl phosphate ester]), phosphonate demulsifiers (for example, Rhdafac ASI) and sulfate demulsifiers (for example, Abex 3010), showed improved performance in Rhodiasolv DEE. The demulsifier #17 contained Duraphos EAR. The demulsifier #18 contained Albrite IOAP. The demulsifier #21 contained Rhodafac ASI. Finally, the demulsifier #5 contained Abex 3010.

Specifically, such demulsifiers unexpectedly showed improved performance in solvent-based Rhodiasolv DEE, where the demulsifier #17 showed 100% water separation, 4 in relation to the scale of transparency and 3 with respect to the interfacial scale. Similarly, the demulsifier #18 showed 100% water separation, 4 in relation to the scale of transparency and 3 with respect to the interfacial scale. Additionally, the demulsifier #21 showed 100% water separation, 3 in relation to the scale of transparency and 4 with respect to the interfacial scale. Finally, the Demulsifier #5 showed 100% water separation, 5 relative to the scale of transparency and 5 with respect to the interfacial scale.

In comparison, the demulsifier #17 in the xylene-methanol solvent basis showed 0% Department of water, 0 to the scale of transparency and 0 with respect to the interfacial scale. Similarly, the demulsifier #18 in the xylene-methanol solvent basis showed 0% Department of water, 0 to the scale of transparency and 0 with respect to the interfacial scale. Additionally, the demulsifier #21 in the xylene-methanol solvent basis showed a 5% Department of water, 1 with respect to the transparent scale the STI and 0 with respect to the interfacial scale. Finally, the demulsifier #5 in xylene-methanol solvent basis showed a 75% water separation, 2 in relation to the scale of transparency and 2 with respect to the interfacial scale.

TABLE 6
Operational characteristics of demulsifier in DV8214 at 250 ppm
DOSE: 250 PPM
TEMP.: 25 C
DV8214
#NameDepartment of water (4 hours)The phase boundary*Transparency**
4Alkamuls 400DO10055
6Gly-EOPO110044

Compared to commercially available xylene/methanol solvent basis, SW-RO surfactants (for example, EO-RO glycerin-based and Alkamuls 400-DO) showed improved exploitatio the major features in DV8214. The demulsifier #4 contained Alkamuls 400-DO, while the demulsifier #6 contained EO-PO copolymer.

Specifically, such demulsifiers unexpectedly showed improved performance in DV8214 solvent-based, where the demulsifier #4 showed 100% water separation, 5 relative to the scale of transparency and 5 with respect to the interfacial scale. The demulsifier #6 showed 100% water separation, 4 in relation to the scale of transparency and 4 with respect to the interfacial scale.

In comparison, the demulsifier #4 in the xylene-methanol solvent basis showed 100% water separation, 4 in relation to the scale of transparency and 5 with respect to the interfacial scale. Similarly, the demulsifier #6 in the xylene-methanol solvent basis showed 100% water separation, 3 in relation to the scale of transparency and 3 with respect to the interfacial scale.

It is clear that while this invention has application in the oil industry - for example, when breaking emulsions of crude oil - the invention may also have application in other industries, for example, in the pharmaceutical industry, the health care industry, the industry of cosmetology and care, etc.

Although the invention described in this application has been described with reference to specific options and examples, it should be clear that such options provided only to illustrate the principles of the s and applications of the present invention. Were offered other options and additional options may be obvious to a person skilled in this field after reading and understanding this description. It is assumed that all such options should be included in the scope of this invention. Therefore, it should be clear that can be done numerous modifications are illustrative of embodiments, and that other systems may be developed within the essence and scope of the invention as defined in the formula of the present invention.

1. The demulsifying composition containing:
(a) anionic surfactant selected from the group consisting of alkylsulfonates, alkylphosphate esters, alkylphosphonic acids, their salts and their combinations;
(b) a nonionic surfactant selected from the group consisting of copolymers of ethylene oxide and propylene oxide, esters, ethoxylated fatty acids and polyethylene glycol, alkoxylated of terpenes, alcohol ethoxylates, modified alkanolamides and combinations thereof; and
(C) the composition of the solvent bases containing a mixture of esters of dibasic acids selected from the group consisting of:
a mixture of complex diesters following formulas
;
and
,
and a complex mixture of diesters of the following formulas
;
and
,
where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

2. The demulsifying composition according to claim 1, characterized in that the anionic surfactant is present in an amount of from 5% to 95% by weight of total surfactant.

3. The demulsifying composition according to claim 1, characterized in that the nonionic surfactant is present in an amount of from 5% to 95% by weight of total surfactant.

4. The demulsifying composition according to claim 1, characterized in that the anionic surfactant is present in an amount of from 10% to 80% by weight of total surfactant.

5. The demulsifying composition according to claim 1, characterized in that the nonionic surfactant is present in an amount of from 10% to 80% by weight of total surfactant.

6. The demulsifying composition according to claim 1, characterized in that the anionic surfactant is dialkilsuljfoksidih sodium, where the alkyl group contains from 5 to 15 carbon atoms.

7. The demulsifying composition according to claim 1, characterized in that the anionic surface-active substances is about chosen from the group consisting of alkylphosphonic acid, laurelrosenhall acid, their salts and combinations of these compounds.

8. The demulsifying composition according to claim 1, characterized in that the nonionic surfactant is a copolymer of ethylene oxide and propylene oxide selected from the group consisting of alkoxylates of ethylene oxide and of propylene oxide, block copolymers of ethylene oxide and of propylene oxide and converted copolymers of ethylene oxide and propylene oxide.

9. The demulsifying composition of claim 8, wherein the nonionic surfactant is a block copolymer of ethylene oxide and of propylene oxide with the General formula

where "m" is 1 to 50, each of "o" and "p" ranges from 1 to 20.

10. The demulsifying composition of claim 8, wherein the nonionic surfactant is an inverted copolymer of ethylene oxide and of propylene oxide with the General formula

where "m" is from 10 to 60, and n is from 4 to 15.

11. The demulsifying composition of claim 10, wherein "m" is equal to 27, and "n" is equal to 8.

12. The demulsifying composition of claim 8, wherein the nonionic surfactant is alkoxylate of ethylene oxide and propylene oxide, having the following form is at

where "d" is equal to 5, and "e" is equal to 8, and R3represents a hydrocarbon chain containing from 1 to 22 carbon atoms.

13. The demulsifying composition according to claim 1, characterized in that the nonionic surfactant is alkoxylate of terpene having the following formula

where R6represents methyl or ethyl, n is from 20 to 30, and m is from 0 to 20.

14. The demulsifying composition according to item 13, wherein R6represents methyl, n is from 20 to 25, and m is from 5 to 10.

15. The demulsifying composition according to claim 1, characterized in that the nonionic surfactant is a complex esters of ethoxylated fatty acids and of polyethylene glycol of General formula


where "x" is from 1 to 20, R4represents a hydrocarbon chain containing from 10 to 22 carbon atoms, and R5represents hydrogen or a hydrocarbon chain containing from 1 to 20 carbon atoms.

16. The demulsifying composition according to claim 1, wherein the blend comprises adducts of alcohol and linear dibasic acids, and these adducts have the formula R7-OOC-A-COO-R7where R7is alkalinuria, and A is a mixture of -(CH2)4-, -(CH2)3and -(CH2)2-.

17. The demulsifying composition according to claim 1, characterized in that the mixture contains adducts of alcohol and dibasic acids, and these adducts have the formula R8-OOC-A1-COO-R9where at least part of R8and/or R9are remnants of the at least one linear alcohol containing 4 carbon atoms, or at least one linear or branched alcohol containing at least 5 carbon atoms, and where A1represents a linear or branched hydrocarbon.

18. The demulsifying composition according to 17, wherein A1contains (i) the formula -(CH2)4-, -(CH2)3and -(CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

19. The demulsifying composition according to claim 1, characterized in that the solvent composition framework contains adducts dibasic acids, and these adducts have the formula R10-OOC-A2-COO-R11where R10and R11are the same or different alkyl groups, and2is a linear or branched hydrocarbon.

20. The demulsifying composition according to claim 19, wherein R10and R11independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl, ISO-amyl, and fusel oil.

21. The demulsifying composition according to claim 19, wherein A2contains (i) the formula -(CH2)4-, -(CH2)3- and - (CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

22. The demulsifying composition according to claim 1, characterized in that the mixture contains:
20-28% by weight of a mixture of complex diapir formula
;
59-67% by weight of a mixture of complex diapir formula
;
9-17% by weight of a mixture of complex diapir formula
,
where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

23. The demulsifying composition according to claim 1, characterized in that the mixture contains:
9-11% by weight of a mixture of complex diapir formula
;
86-89% by weight of a mixture of complex diapir formula
;
1-3% by weight of a mixture of complex diapir formula
,
where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

24. The demulsifying composition containing:
(a)
(i) anionic surfactant selected from the group consisting of alkylsulfonates, alkimos nowych acids, their salts and combinations of these compounds, or
(ii) nonionic surfactant selected from the group consisting of copolymers of ethylene oxide and propylene oxide, esters, ethoxylated fatty acids and polyethylene glycol, ethoxylates alcohol, alkoxylated of terpenes, and combinations of these compounds; and
(b) the composition of the solvent bases containing a mixture of esters of dibasic acids selected from the group consisting of:
a mixture of complex diesters following formulas
;
and
,
and a complex mixture of diesters of the following formulas
;
and
,
where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

25. The demulsifying composition of paragraph 24, wherein the anionic surfactant is dialkilsuljfoksidih sodium, where the alkyl group contains from 5 to 15 carbon atoms.

26. The demulsifying composition of paragraph 24, wherein the anionic surfactant is selected from the group consisting of alkylphosphonate acid, laurelrosenhall acid, their salts and combinations of these compounds.

27. The demulsifying composition of paragraph 24,characterized in that that the mixture contains adducts of alcohol and dibasic acids, and these adducts have the formula R7-OOC-A-COO-R7where R7represents an alkyl group, and A represents (i) the formula -(CH2)4-, -(CH2)3- and -(CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

28. The demulsifying composition of paragraph 24, wherein the solvent composition framework contains adducts of ethanol and dibasic acids, and these adducts have the formula R8-OOC-A1-COO-R9where at least part of R8and/or R9are remnants of the at least one linear alcohol containing 4 carbon atoms, or at least one linear or branched alcohol containing at least 5 carbon atoms, and where A1represents (i) the formula -(CH2)4-, -(CH2)3- and - (CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

29. The demulsifying composition of paragraph 24, wherein alkoxylate of terpenes has the following formula

where R6represents methyl or ethyl, n is from 20 to 30, and m is from 0 to 20.

30. The way of breaking down the emulsion of oil and water, R is the seer: bringing into contact a specified emulsion with a demulsifying composition, containing (a) an anionic surfactant selected from the group consisting of alkylsulfonates, alkylphosphonic acids, their salts and combinations thereof; (b) a nonionic surfactant selected from the group consisting of copolymers of ethylene oxide and propylene oxide, esters, ethoxylated fatty acids and polyethylene glycol, ethoxylates alcohol, alkoxylated of terpenes, modified alkanolamides and combinations thereof; and (C) the composition of the solvent bases containing a mixture of esters of dibasic acids selected from the group consisting of:
a mixture of complex diesters following formulas
;
and
,
and a complex mixture of diesters of the following formulas
;
and
and
,
where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

31. The method according to item 30, wherein the anionic surfactant is dialkilsuljfoksidih sodium, where the alkyl group contains from 5 to 15 carbon atoms.

32. The method according to item 30, wherein said mixture contains adducts of alcohol and dibasic acids, and these adducts have the formula R7-OOC-A-COO-R7 where R7represents an alkyl group, and A represents (i) the formula -(CH2)4-, -(CH2)3- and -(CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

33. The method according to item 30, wherein the solvent composition framework contains adducts of alcohol and dibasic acids, and these adducts have the formula R8-OOC-A1-COO-R9where at least part of R8and/or R9are remnants of the at least one linear alcohol containing 4 carbon atoms, or at least one linear or branched alcohol,
containing at least 5 carbon atoms, and where A1represents (i) the formula -(CH2)4-, -(CH2)3- and - (CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

34. The method according to item 30, wherein the emulsion is an emulsion type water in oil".

35. Method of destruction of the emulsion of water and oil, comprising bringing a specified emulsion in contact with (a) a demulsifying agent containing (i) an anionic surfactant selected from the group consisting of alkylsulfonates, alkylphosphonic acids, their salts and combinations thereof, or (ii) nonionic surfactant, in the curse of the group, consisting of copolymers of ethylene oxide and propylene oxide, esters, ethoxylated fatty acids of polyethylene glycol, ethoxylates alcohol, alkoxylated of terpenes, and combinations thereof; and (b) a solvent composition framework, containing a mixture of esters of dibasic acids selected from the group consisting of:
a mixture of complex diesters following formulas
;
and
,
and a complex mixture of diesters of the following formulas
;
and
,
where R represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl, n-butyl or isoamyl.

36. The method according to p, wherein the anionic surfactant is dialkilsuljfoksidih sodium, where the alkyl group contains from 5 to 15 carbon atoms.

37. The method according to p, characterized in that the nonionic surfactant is a copolymer of ethylene oxide and propylene oxide selected from the group consisting of alkoxylates of ethylene oxide and of propylene oxide, block copolymers of ethylene oxide and propylene oxide, and turned copolymers of ethylene oxide and propylene oxide.

38. The method according to p, characterized in that alkoxylate of terpenes has the following formula

where R6represents methyl or ethyl, n is from 20 to 30, and m is from 0 to 20.

39. The method according to p, characterized in that the mixture contains adducts of alcohol and dibasic acids, and these adducts have the formula R7-OOC-A-COO-R7where R7represents an alkyl group and a represents (i) the formula -(CH2)4-, -(CH2)3- and - (CH2)2or (ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.

40. The method according to p, characterized in that the solvent composition framework contains adducts of alcohol and dibasic acids, and these adducts have the formula R8-OOC-A1-COO-R9where at least part of R8and/or R9are remnants of the at least one linear alcohol containing 4 carbon atoms, or at least one linear or branched alcohol containing at least 5 carbon atoms, and where A1represents a
(i) the formula -(CH2)4-, -(CH2)3- and - (CH2)2or
(ii) a mixture of-CH(CH3)-CH2-CH2-, -CH(C2H5)-CH2- and -(CH2)4-.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to use of alkoxylated polyalkanolamines to demulsify oil-in-water emulsions, primarily oil emulsions. Alkoxylated polyalkanolamines are obtained (A) by condensing at least one trialkanolamine to a polyalkanolamine, the obtained polyalkanolamine having number-average molecular weight from 1000 to 20000 g/mol, and (B) alkoxylating the obtained polyalkanolamine with ethylene oxide and propylene oxide. The formed polyoxyalkylene groups have a block structure of general formula: -(CH2CH2O)x(CH2CH(CH3)O)yH, in which x and y denote a number from 3 to 100, respectively, and the ratio y/x is greater than 1.

EFFECT: disclosed demulsifiers are suitable for faster and complete phase separation of oil-in-water emulsions, primarily oil emulsions.

11 cl, 2 tbl, 8 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to a method for dehumidification and deasphaltasing of crude oil involving the stages of: mixing crude oil containing hydrocarbons, asphaltenes and water with one or more solvents to prepare a first mixture; the first mixture is selectively separated to prepare an oil phase and a water phase wherein the oil phase contains hydrocarbons, asphaltenes and a solvent; asphaltenes are selectively separated from the oil phase to prepare deasphaltised oil containing at least a portion of hydrocarbons and at least a portion of the solvent, and an asphaltene mixture containing asphaltenes, a remaining portion of hydrocarbons and a remaining portion of the solvent; the solvent is selectively separated from the asphaltene mixture, and at least a portion of the separated solvent is recycled into the first mixture. The invention also refers a method for dehumidification and deasphaltasing of the hydrocarbon supplied material.

EFFECT: improved crude oil dehumidification with minimal capital expenses.

22 cl, 4 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of bituminous oil dehydration at oil fields with water content of up to 60%, in which for improvement of water separation a hydrocarbon dissolvent is used, such as liquid butanes under the following conditions: volume ratio of liquid butanes (hydrocarbon dissolvent); watered oil (0.5-1):1, temperature 15-20°C, pressure 5-7 kg/cm2.

EFFECT: quality of dehydrated oil corresponds to GOST R 51858-2002.

1 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to preparation of oil and can be used in oil-producing and oil-refining industry at the stage of oil preparation for its transportation and refining for separation of water-oil emulsions. Invention deals with de-emulsifier, which represents nanosize aluminium nitride (AIN) powder.

EFFECT: improvement of separation of oil and water phases (without formation of intermediate layers) and deep dehydration of oil (residual water content <0,1%).

1 dwg, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to chemical reagents - hydrogen sulphide scavengers, and can be used in oil and gas production, oil and gas refining for neutralising hydrogen sulphide and light mercaptans in hydrocarbon-containing media. Disclosed is a hydrogen sulphide scavenger which contains an alkali metal hydroxide and/or an organic base (0.03-15 wt %), a nonionic surfactant (0.5-25 wt %) and hemiformal(s) of a lower aliphatic alcohol (the balance). The nonionic surfactant is preferably polyethers based on glycerol (Laprols) or oxyalkylated glycols (Proxanols) or oxyalkylated ethylenediamine (Proxamines) or oxyethylated alkylphenols (Neonols) or mixtures thereof. The disclosed scavenger-demulsifier also has bactericidal effect on sulphate-reducing bacteria.

EFFECT: intensifying processes of producing the scavenger and neutralising hydrogen sulphide in hydrocarbon-containing media, creating a reagent with complex action, which combines properties of a hydrogen sulphide scavenger and a demulsifier of oil-water emulsions, having low corrosiveness.

4 cl, 1 tbl, 18 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to a method for prevention of accumulation of electrostatic charges in emulsions at oil production and transport using neutralising devices; at that, at oil collection stage, antistatic surface-active substance is introduced to the well; at oil treatment stage, late dosing of demulsifiers is performed.

EFFECT: prevention of generation of static electricity and accumulation of electrostatic charges of oil-water emulsion.

7 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil production industry, and namely to compositions for destruction of oil-water emulsions and for removal and prevention of asphalt-resin-paraffin deposits (ARPD), and can be used at oil fields for protection of the equipment. Composition for destruction of oil-water emulsions and for removal and prevention of asphalt-resin-paraffin deposits includes aluminium chloride, solvent - mixture of toluene, benzene and acetone at their ratio in the mixture, which is equal to 4.2:1.0:1.3-2.6 respectively, or mixture of toluene and acetone at their ratio in the mixture, which is equal to 1.27-1.65:1 respectively, or o-xylene, surface active substance - synthanol, or oksinol, or neonol, or sinterol. The specified composition contains a corrosion inhibitor, and namely aminoamide, or polyethylenepolyamine benzyne ammonium chloride, or imidasoline.

EFFECT: higher efficiency and protection degree of oil-field equipment, as well as enlarged range of compositions for protection against ARPD.

6 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of desalinating a gas condensate on a unit for washing the gas condensate with fresh water, involving feeding fresh or low-mineralised water for mixing with the gas condensate, wherein a demulsifying agent is added beforehand in a pipeline. The process is carried out in a turbulent apparatus with a diffuser-confusor design, wherein the prepared gas condensate at 30°C is fed into the input channel of the first section of a tubular turbulent apparatus with a diffuser-confusor design with volume rate of 22-25 m3/h. Further, 1-1.5 wt % washing water is fed into the first section of the mixing apparatus coaxially through a perforated pipe with a closed end.

EFFECT: simple design of the mixing apparatus, low metal consumption, reduced pressure drop and low water consumption.

4 dwg, 3 tbl, 5 ex

FIELD: oil and gas industry.

SUBSTANCE: invention refers to heavy oil treatment plant including the stage of gas separation and preliminary water discharge, raw oil pump, stage of dehydration of heavy oil with sediment basin, commercial buffer tank, commercial pump and waste treatment facilities. Before sediment basin of dehydration stage of heavy oil there installed is flowing coalescentor, and sediment basin between inlet of pre-dehydrated heavy oil and outlet of commercial heavy oil and water outlet is equipped with internal coalescent-sediment section; at that, commercial heavy oil metering assembly is installed after commercial pump. Invention also refers to versions of heavy oil treatment plant.

EFFECT: reduction of capital and operating costs on treatment of heavy oil owing to simplifying the structure of the plant equipment.

12 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention can be used in oil dehydration during pipeline demulsification on oil collection facilities, oil treatment plants, oil refineries, and in oil deep dehydration and desalination processes. The invention relates to a composition for dehydrating and desalinating water-oil emulsions, containing a nonionic surfactant 35-49 wt %, an ionic surfactant which contains a quaternary nitrogen atom selected from: oleyl amidopropyl betaine, cocamidopropyl betaine, alkylbetaine, cetyltrimethylammonium chloride, oleyl amidopropyl trimethylammonium chloride, oleyl amidopropyl dimethylamino oxide 1-15 wt % and solvent - the balance.

EFFECT: wider range of surfactant compositions for effective dehydration and desalination of water-oil emulsions, protection of the system for collecting, transporting and treating oil from corrosion.

2 cl, 5 tbl, 43 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to application of ester compounds of benzoic acid, taken from group, which includes 1-phenylvinyl 4-methoxybenzoate; 1-(4-methoxyphenyl)-vinyl 4-tert-butyl benzoate, 1-(4-tert-butylphenyl)-vinyl 4-methoxybenzoate, 1-phenylvinyl 4-tert-butyl benzoate, 4-benzoyloxy-2-methoxybenzolsulphonic acid, 3-diethylaminophenyl benzoate and 3-(1-pyrrolidinyl) phenyl benzoate and 3-methoxy salicylate, as component for preparing composition for protection of human organism or animal or material from ultraviolet radiation, containing effective quantity at least one of claimed compounds, as component for preparing composition, which is characterised by progressive protection from UV radiation, depending on duration of sun influence and level of sun radiation, as component for preparing composition for individual hygiene, which is characterised by progressive protection from UV radiation, depending on duration of sun influence and level of sun radiation, as component for preparing industrial composition, which is characterised by progressive protection from UV radiation, depending on duration of sun influence and level of sun radiation, and as component for preparing composition, which at photo-regrouping shows quantity of obtained UV-B radiation.

EFFECT: invention also relates to composition for protecting human or animal organism or protection of material from ultraviolet radiation, contains effective quantity of at least one above mentioned ester compound of benzoic acid.

40 cl, 6 dwg, 33 ex

FIELD: oil and gas industry.

SUBSTANCE: inhibitor consists of mixture of solvent from alcohol and hydrocarbon compounds and additive in the form of quaternary ammonium salt of vegetable oil alkilimidasoline and benzyl chloride of the following general formula: where R - acid radical of vegetable oil of selected group: caprylic, capric, lauric, myristic, palmitic, palmitoleic, stearic, oleic, linoleic, arachidic, linolenic, gondoinic, behenic, erucic. Component ratio in the mixture, wt %: additive - 1.0-30.0; solvent - 70-99.

EFFECT: invention allows preventing formation of high-molecular deposits on the surface of equipment and corrosion of metal.

2 tbl, 14 ex

FIELD: process engineering.

SUBSTANCE: invention relates to abrasive grain mix bonded by inorganic binder. Mix structure is formed by multiple abrasive grains. Note here that abrasive grain is selected from the group consisting of corundum, fused corundum, sintered corundum, zirconium corundum, silicon carbide, boron carbide, cubic boron nitride, diamond and/or mixed thereof, and bonded by inorganic binder. Said binder is based on aluminium silicate, liquid glass and water. Note here that molar ratio of Al2O3 components to those of SiO2 in binder varies from 1:2 to 1:20. Proposed method comprises mixing abrasive grains with binder, drying produced mix at 100°C - 150°C and curing the mix at 200°C to approx. 450°C.

EFFECT: highest possible hardness.

18 cl, 3 dwg, 2 tbl, 3 ex

FIELD: organic chemistry.
SUBSTANCE: invention refers to using a flocculating and sequestering agent with the organic solution as an agent to facilitate such purification. A method of purifying an organic solution, comprising contacting a flocculating and sequestering agent with the organic solution, which organic solution comprises fatty acid alkyl esters, wherein the water content of the organic solution is equal or less than 5% by weight, when the pH in the organic solution is 9 to 12, wherein the flocculating and sequestering agent is chosen from polyaluminium coagulants. There is provided a process for purification of an organic solution of fatty acid alkyl esters suitable for use as biodiesel, comprising: adding a flocculating and sequestering agent chosen from polyaluminium coagulants to the organic solution so as to facilitate the purification when the pH in the organic solution is 9 to 12 and removing a portion from the organic solution, which portion comprises the flocculating and sequestering agent, and impurities, wherein the water content of the organic solution is equal or less than 5% by weight.

EFFECT: process will enable less energy input and becomes less time-consuming and less costly, as compared to the known processes using water to purify the organic solution.

10 cl, 3 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: method involves preparation of a solution of initial components and addition of extra components to the said solution while stirring. The initial components used are glycerin, polyethylene glycol and distilled water and are stirred for 1 hour at 55°C. During addition of extra components, the following are successively added to the solution of initial components: acetates of aliphatic amines while stirring for 12 hours, benzotriazole while stirring for 12 hours, sodium benzoate while stirring for 5 hours, triethanolamine while stirring for 2 hours and proxanol while stirring for 3 hours. The extra components are added while stirring at 55°C and the following nominal ratio of components is maintained (wt %): glycerin 37.20, distilled water 32.64, polyethylene glycol 23.10, triethanolamine 4.00, sodium benzoate 1.50, benzotriazole 1.30, acetates of aliphatic amines 0.25, proxanol 0.01.

EFFECT: wider field of use, obtaining hydraulic fluid for use as actuating medium in hydraulic systems.

1 cl

FIELD: oil and gas industry.

SUBSTANCE: composition contains di-sodium salt of ethylene-diamin-tetra-acetic acid, sodium hydroxide, ethylene glycol and water at following ratio of components, wt %: di-sodium salt of ethylen-diamin-tetra-acetic acid 9-15, sodium hydroxide 2-6, ethylene glycol 20-40 and water the rest.

EFFECT: composition possesses upgraded dissolving capacity relative to non-organic sediments of complex composition with inclusions of sulphide and iron oxide in them in wide range; also there is facilitated increased capacity of dissolving, high lubricant ability and added capacity to retain ions of iron in dissolved condition.

3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: bottles are crushed to particle size ranging from 0.001 to 5 mm, mixed with calcium chloride in mass ratio bottle : CaCl2 equal to 20:1.

EFFECT: obtaining new material.

1 cl, 2 tbl

FIELD: oil-and-gas production.

SUBSTANCE: group of inventions related to material and method for collection of oil, lube, masut, fuel and hydrocarbons form water, soil, and other surfaces, also for cleaning of contaminated with oil and oil-products waters The material consists of swelling in oil and/or oil-products rubber and dispersing mineral filler with opened internal hydrophobic porosity.

EFFECT: efficiency increase and economically more profitable in terms of material consumption and method itself due to oil bonding speed increase and decrease of resin volume in the material.

3 cl, 2 ex, 4 tbl

FIELD: medicine.

SUBSTANCE: invention relates to the new hem-difluoridated compound of the formula: where R1 represents a group, containing alkyl chain or amino group; R2 represents hydrogen atom, either free or protected functional group of alcohol; R3 represents a group CH2OH, CH2-OGP, where GP respresents protecting group such as alkyl, benzyl (Vp), trimethylsilyl (TMS), tert-butyldimethylsilyl (TBDMS), tert-butyldiphenylsilyl (TBDPS), acetate (Ac); Y, Y', Y" represent independent groups OR, where R represents H, benzyl, Ac, TMS, TBDMS, TBDPS that are used for producing antitumor, antiviral, hypoglycemic and anti-flammatory medicine and compounds for immunology and cosmetology, or glyco peptide analogs of antifreeze molecules. The invention refers particularly also to the new hem-difluoridated compound of the general formula: and to the method of producing new hem-difluoridated compound of the formula: .

EFFECT: compounds possess increased effectiveness.

7 cl, 8 ex, 24 dwg

Mastic // 2368637

FIELD: construction.

SUBSTANCE: invention is related to materials for protection against corrosion of pipeline metal surfaces and electric cables in metal casing, and also to materials for sealing of accumulators. Mastic based on asmol contains oil dissolvent, ASM glue, plasticiser, bivinyl styrene thermoplastic elastomer DST and syndiotactic 1.2 polybutadiene. Mastic may additionally contain chalk.

EFFECT: mastic has high resistance to loads due to increase of its strength characteristics, when mastic is applied onto polymer base, possibility is provided to use tape at low temperatures (up to -20°C).

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to use of alkoxylated polyalkanolamines to demulsify oil-in-water emulsions, primarily oil emulsions. Alkoxylated polyalkanolamines are obtained (A) by condensing at least one trialkanolamine to a polyalkanolamine, the obtained polyalkanolamine having number-average molecular weight from 1000 to 20000 g/mol, and (B) alkoxylating the obtained polyalkanolamine with ethylene oxide and propylene oxide. The formed polyoxyalkylene groups have a block structure of general formula: -(CH2CH2O)x(CH2CH(CH3)O)yH, in which x and y denote a number from 3 to 100, respectively, and the ratio y/x is greater than 1.

EFFECT: disclosed demulsifiers are suitable for faster and complete phase separation of oil-in-water emulsions, primarily oil emulsions.

11 cl, 2 tbl, 8 ex

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