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Azeotrope patents

      

This page is updated frequently with new Azeotrope-related patent applications.




 Histological specimen treatment patent thumbnailHistological specimen treatment
A single dissolving compound forms plural azeotropes, which can be azeotropically vaporized off at various stages of the treatment process, thus maintaining predictable concentrations of the chemicals present. The treatment process can be performed in the absence of formalin or related compounds which can interfere with the preservation of genetic material.

 Refrigerant compositions patent thumbnailRefrigerant compositions
Refrigerant compositions are described. In particular, refrigerant compositions are described that include a two component blend, where one of the components is a refrigerant blend that, when first combined, is considered an azeotropic blend, azeotrope, near azeotropic, or the like.

 Method for preparing 3-trifluoromethyl chalcones patent thumbnailMethod for preparing 3-trifluoromethyl chalcones
Disclosed is a method for preparing a compound of formula 1 wherein q and z are as defined in the disclosure comprising distilling water from a mixture comprising a compound of formula 2, a compound of formula 3, a base comprising at least one compound selected from the group consisting of alkaline earth metal hydroxides of formula 4 wherein m is ca, sr or ba, alkali metal carbonates of formula 4a wherein m1 is li, na or k, 1,5-diazabicyclo[4.3.0]non-5-ene and 1,8-diazabicyclo[5.4.0]undec-7-ene, and an aprotic solvent capable of forming a low-boiling azeotrope with water. Also disclosed is a method for preparing a compound of formula 2 comprising (1) forming a reaction mixture comprising a grignard reagent derived from contacting a compound of formula 5 wherein x is cl, br or i with magnesium metal or an alkylmagnesium halide in the presence of an ethereal solvent, and then (2) contacting the reaction mixture with a compound of formula 6 wherein y is or11 or nr12r11, and r11, r11 and r13 are as defined in the disclosure.
E.i. Du Pont De Nemours And Company


 Compositions comprising tetrafluoropropene and tetrafluoroethane; their use in power cycles; and power cycle apparatus patent thumbnailCompositions comprising tetrafluoropropene and tetrafluoroethane; their use in power cycles; and power cycle apparatus
A method for converting heat from a heat source to mechanical energy is provided. The method comprises heating a working fluid e-1,3,3,3-tetrafluoropropene and at least one compound selected from 1,1,1,2-tetrafluoroethane and 1,1,2,2-tetrafluoroethane using heat supplied from the heat source; and expanding the heated working fluid to lower the pressure of the working fluid and generate mechanical energy as the pressure of the working fluid is lowered.
The Chemours Company Fc, Llc


 Apparatuses and methods for energy efficient separations including refining of fuel products patent thumbnailApparatuses and methods for energy efficient separations including refining of fuel products
In various aspects, methods and apparatuses for liquid-liquid extraction are provided. In certain aspects, an emulsion can be formed by combining a feed stream, an extractant, and a surfactant.
Government Of The United States As Represented By The Secretary Of The Air Force


 Solvent decontamination system and method patent thumbnailSolvent decontamination system and method
A system and method for decontaminating a fluid like a non-azeotrope solvent such as water, wherein a transport gas is maintained at a temperature between the freezing point and boiling point at atmospheric pressure of the solvent and continuously circulated between an evaporation chamber and a condensation chamber, a contaminated solvent is introduced into the transport gas in the evaporation chamber under process heat and contaminant precipitates out, and the cleaned solvent cools in the condensation chamber releasing heat to be used in the evaporation chamber. A heat pump is used to promote evaporation and condensation within the system..
Innocorps Research Corporation


 Composition and use of vinylidene fluoride and blends thereof patent thumbnailComposition and use of vinylidene fluoride and blends thereof
The present technology relates to compositional blends that can be used as refrigerants, and more specifically to blends of vinylidene fluoride and at least one other component for use in very low temperature applications. In at least some examples, the second component can be selected from the group consisting of carbon dioxide and pentafluoroethane.
Honeywell International Inc.


 Azeotrope-like compositions of hfo-e-1,3,4,4,4-pentafluoro-3-trifluoromethyl-1-butene and e-1-chloro-3,3,3-trifluoropropene and uses thereof patent thumbnailAzeotrope-like compositions of hfo-e-1,3,4,4,4-pentafluoro-3-trifluoromethyl-1-butene and e-1-chloro-3,3,3-trifluoropropene and uses thereof
azeotrope-like compositions are disclosed. The azeotrope-like compositions are mixtures of hfo-e-1,3,4,4,4-pentafluoro-3-trifluoromethyl-1-butene and e-1-chloro-3,3,3-trifluoropropene.
The Chemours Company Fc, Llc


 Purification of an acetyl stream patent thumbnailPurification of an acetyl stream
A process for purifying an acetyl stream containing an impurity that forms an azeotrope with the acetyl moiety includes the steps of a) contacting an acetyl feed stream comprising: i) acetic acid; and ii) an acetic acid azeotrope-forming compound, with a metal oxide catalyst in a ketonization reactor to produce a crude product mixture from a ketonization reaction comprising acetone, water, the acetic acid azeotrope-forming compound, and byproducts from the ketonization reaction; and b) distilling the crude product mixture to recover: i) a lower boiling fraction stream comprising acetone, and a minor amount of: water, said acetic acid azeotrope-forming compound, and ketonization byproducts, and ii) a higher boiling fraction stream comprising a major amount of: water, the acetic acid azeotrope forming compound, and the ketonization byproducts. Optionally, the process can include contacting the crude product mixture with water in a countercurrent absorber prior to the distilling step (b)..
Eastman Chemical Company


 Method and  extracting plant oils using ethanol water patent thumbnailMethod and extracting plant oils using ethanol water
The invention provides a method and apparatus for continuous extraction of plant oils from plant tissue using an advantageous azeotrope of ethanol and water and employing the differing solubility of plant oils in ethanol and water to drive formation of a non-toxic oil tincture.. .

Azeotropic compositions of 1,1,3,3-tetrachloroprop-1-ene and hydrogen fluoride

Provided are azeotropic or azeotrope-like mixtures of 1,1,3,3-tetrachloroprop-1-ene (hco-1230za) and hydrogen fluoride. Such compositions are useful as feed stock in the production of hfc-245fa and hcfo-1233zd..
Honeywell International Inc.

Integrated process to produce 2,3,3,3-tetrafluoropropene

The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of hf formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. Distillation..
Honeywell International Inc.

Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene

An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of a c1-c3 alcohol, a c5-c6 hydrocarbon, a halogenated hydrocarbon, methylal, methyl acetone, water, nitromethane, and combinations thereof.. .
Honeywell International Inc.

Azeotrope-like compositions of tetrafluoropropene and alcohols

A composition including an effective amount of trans-1,3,3,3-tetrafluoropropene component combined with an effective amount of an alcohol selected from the group of methanol, ethanol, propanol, isopropanol, tert-butanol, isobutanol, 2-ethyl hexanol and any combination thereof, where the composition has azeotropic properties.. .

Process system for separating chemicals, distillation column arrangement, and separating chemicals

An arrangement for separating chemicals comprises a first distillation column (100) and the first distillation column (100) receives a mixture that comprises water and at least two organic acids and extractant that comprises at least one of the following: hexanol, an ester of hexanol with said at least one organic acid and 2-methylpentanol. The first distillation column (100) forms a heterogeneous azeotrope of water and extractant at its top (104) on the basis of reactive heteroazeotropic extractive distillation not controlling chemical reactions between the extractant and said at least two organic acids, said first distillation column (100) removing the azeotrope through its top (104) for separating water from the organic acid..

Reactive chromatography process for equilibrium-limited reactions

The present disclosure provides for a process for an equilibrium limited reaction using reactive chromatography unit (rcu) in which a first organic donor reactant (fodr) and a second organic acceptor reactant (soar) react to form a product mixture of a first acceptor product (fap) and a second donor co-product (sdcp). The equilibrium-limited reaction does not produce water.
Dow Global Technologies, Llc

Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene

The present invention relates, in part, to ternary azeotropic compositions and mixtures including chlorotrifluoropropene, methanol, and a third component selected from isohexane, trans-1,2-dichloroethylene, and petroleum ether. The present invention further relates to ternary azeotropic compositions and mixtures including chlorotrifluoropropene, cyclopentane, and a alcohol selected from methanol, ethanol, and isopropanol..
Honeywell International Inc.

Azeotropic compositions of 1,3,3,3-tetrachloroprop-1-ene and hydrogen fluoride

Provided are azeotropic or azeotrope-like mixtures of 1,3,3,3-tetrachloroprop-1-ene (hco-1230zd) and hydrogen fluoride. Such compositions are useful as a feed stock in the production of hfc245fa and hcfo1233zd..
Honeywell International Inc.

Polyarylethersulfone copolymers

Where the reaction mixture (rg) does not comprise any substance which forms an azeotrope with water.. .

Polyarylethersulfone copolymers

Where the reaction mixture (rg) does not comprise any substance which forms an azeotrope with water.. .

Process for the separation and purification of a mixed diol stream

Disclosed is a process for the purification of a mixed diol stream. The mixed diol stream comprising two-, three-, and four-carbon diols is separated into component diols by extraction with a hydrophobic solvent mixture.
Eastman Chemical Company

Process for the preparation of vinyl acetate

A process for the preparation of vinyl acetate by a heterogeneously catalysed, continuous gas-phase reaction of ethylene, acetic acid and oxygen in a reactor, where process heat liberated during the reaction is removed from the reactor by means of heat exchange with water, generating intrinsic steam, the product mixture leaving the reactor and comprising ethylene, vinyl acetate, acetic acid, water, carbon dioxide and inert gases is separated by distillation using one or more azeotrope columns and/or one or more pure distillation columns, wherein at least one azeotrope column and/or pure distillation column contains packings, and intrinsic steam is used at least partially for introducing energy into the thus-equipped azeotrope columns and/or pure distillation columns.. .
Wacker Chemie Ag

Thermal salt-splitting of (alkyl)ammonium 3-hydroxypropionate

A salt-splitting liquid (ssl) and a process that uses the ssl to “split” (alkyl)ammonium 3-hydroxypropionate salts into ammonia (or amines) and 3-hydroxypropionic acid (3-hp) that minimizes increases in viscosity and condensation reactions of the 3-hp. Converting (alkyl)ammonium 3-hydroxypropionate in an aqueous mixture to 3-hp includes admixing a polar aprotic organic solvent and an azeotroping solvent with the aqueous mixture.
Rohm And Haas Company

Compositions and refrigeration

The present invention relates, in part, to heat transfer systems, methods and compositions which utilize a heat transfer fluid comprising: (a) hfo-1234ze; (b) hfc-227ea; and (c) optionally hfc-134a, wherein hfo-1234ze and hfc-227ea are provided in effective amounts to form an azeotrope or azeotrope-like composition.. .
Honeywell International Inc.

Compositions of chloro-trifluoropropene and hexafluorobutene

Provided are compositions, preferably azeotrope or azeotrope-like compositions including 1,1,1,4,4,4-hexafluoro-2-butene and chlorotrifluoropropene, particularly 1-chloro-3,3,3-trifluoropropene (hcfo-1233zd), and uses thereof of the compositions. The composition may be a heat transfer composition.
Arkema France

Improved manufacturing 1,4:3,6-dianhydrohexitol di(alkyl carbonate)s

The present invention relates to a process for the manufacturing of pure and substantially oligomers-free 1,4:3,6-dianhydrohexitol di(alkyl carbonate)s which comprises the steps of: a) preparing a reaction mixture consisting of at least one dianhydrohexitol, at least 2 molar equivalents with respect to the amount of dianhydrohexitol present, of at least one dialkyl carbonate of formula r—o—c(═o)—o—r, where r has the same meaning indicated above, and from 0.01 to less than 0.1 molar equivalents of a transesterification catalyst with respect to the amount of dianhydrohexitol present; and b) heating the reaction mixture up to its reflux temperature in a reactor preferably equipped with a rectification column comprising a number of theoretical distillation plates sufficient to separate continuously from the reaction mixture by fractional distillation the alcohol obtained or the azeotrope which the alcohol forms with the dialkyl carbonate present in the reaction mixture. The process comprises further recovering the transesterification catalyst from the reaction mixture and isolating the 1,4:3,6-dianhydrohexitol di(alkyl carbonate)..
FundaciÓn Tecnalia Research & Innovation

Method for purifying tetrafluoropropene

A method for separating hfo-1234yf containing substantially no r40, which comprises bringing an azeotropic composition or azeotrope-like composition of hfo-1234yf and r40 into contact with a specific extraction solvent.. .

Method and molecular targeting and separation of feedstock fluids

Disclosed is an apparatus and method for separating constituent mixtures, whereby microwave energy is used to vaporize targeted constituents within the mixture at different rates based on specific parameters of the apparatus. The present apparatus and method can enable separation of numerous mixtures that are difficult to separate using conventional methods wherein the constituents have similar boiling points, azeotropes, alcohols, sulfides, amines, hydrocarbons, and other polar molecules or compounds.

Azeotropic and azeotrope-like compositions of hcfo-e-1-chloro-3,3,3-trifluoropropene and a pentane and uses thereof

azeotrope-like compositions are disclosed. The azeotrope-like compositions are mixtures of hcfo-e-1-chloro-3,3,3-trifluoropropene and cyclopentane.
E I Du Pont De Nemours And Company

Process for production of mixed butanols and diisobutenes as fuel blending components

A process for simultaneously hydrating and oligomerizing a hydrocarbon feed comprising mixed olefins incudes the steps of: (a) introducing the hydrocarbon feed in the presence of water into a fixed bed; (b) contacting the hydrocarbon feed with a catalyst within said fixed bed reactor, where the catalyst is of the type that hydrates the mixed olefins to form mixed alcohols and oligomerizes at least a portion of the mixed olefins into oligomers to produce a first product stream that includes an organic phase and an aqueous phase; (c) introducing the first product stream into a first separator which separates the organic phase from the aqueous phase; (d) introducing the separated organic phase into a second separator which separates unreacted olefins from mixed alcohols and one or more oligomers which comprise a final product stream; and (e) introducing the separated aqueous phase into a third separator which separates an alcohol-water azeotrope component from water.. .
Saudi Arabian Oil Company

Method for preparing 3-trifluoromethyl chalcones

Disclosed is a method for preparing a compound of formula 1 wherein q and z are as defined in the disclosure comprising distilling water from a mixture comprising a compound of formula 2, a compound of formula 3, a base comprising at least one compound selected from the group consisting of alkaline earth metal hydroxides of formula 4 wherein m is ca, sr or ba, alkali metal carbonates of formula 4a wherein m1 is li, na or k, 1,5-diazabicyclo[4.3.0]non-5-ene and 1,8-diazabicyclo[5.4.0]undec-7-ene, and an aprotic solvent capable of forming a low-boiling azeotrope with water. Also disclosed is a method for preparing a compound of formula 2 comprising (1) forming a reaction mixture comprising a grignard reagent derived from contacting a compound of formula 5 wherein x is cl, br or i with magnesium metal or an alkylmagnesium halide in the presence of an ethereal solvent, and then (2) contacting the reaction mixture with a compound of formula 6 wherein y is or11 or nr12r13, and r11, r12 and r13 are as defined in the disclosure.
E.i. Du Pont De Nemours And Company

Azeotropic and azeotrope-like compositions of 2,3,3,4,4,4-hexafluoro-1-butene and 1,1,1,2,3,3-hexafluoropropane and uses thereof

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions include mixtures of 2,3,3,4,4,4-hexafluoro-1-butene a second component, where the second component may be and 1,1,1,2,3,3-hexafluoropropane.
E.i.du Pont De Nemours And Company

Azeotropic and azeotrope-like compositions of e-1,3,4,4,4-pentafluoro-3-trifluoromethyl-1-butene and z-1,1,1,4,4,4-hexafluoro-2-butene and uses thereof

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of e-1,3,4,4,4-pentafluoro-3-trifluoromethyl-1-butene and z-1,1,1,4,4,4-hexafluoro-2-butene.
E I Du Pont De Nemours And Company

Dehydration of dilutions of compounds forming an azeotrope with water

A process and a column configuration for dehydration of an aqueous dilution of a compound forming an azeotrope with water, such as raw grade bioethanol, formic acid or chloroform, to form a concentrate with a concentration above azeotropic level. A preconcentration section (26, 40, 55) with a reboiler (29, 42, 57) and an extractive distillation section (22, 41, 52) are thermally coupled.
Akzo Nobel Chemicals International B.v.

Azeotropic compositions of 1,1,1,3,3-pentachloropropane and hydrogen fluoride

Provided are methods for forming azeotropic or azeotrope-like mixtures of 1,1,1,3,3-pentachloro-propane (240fa) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of hfc-245fa and hcfo-1233zd..
Honeywell International Inc.

Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene

An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of a c1-c3 alcohol, a c5-c6 hydrocarbon, a halogenated hydrocarbon, methylal, methyl acetone, water, nitromethane, and combinations thereof.. .
Honeywell International Inc.

Method for producing carboxylic acid esters

The invention relates to a method for producing carboxylic esters by converting a carboxylic acid or a carboxylic acid anhydride or a mixture thereof with an alcohol in a reaction system comprising one or more reactors, wherein reaction water is distilled as alcohol-water-azeotrope with the vapors, the vapors are at least partially condensed, the condensate is separated into an aqueous phase and an organic phase and said organic phase is supplied at least partially back into said reaction system. Components boiling lower than the alcohol are at least partially removed from said returned organic phase such as wherein components boiling lower than alcohol are evaporated and/or distilled off.
Basf Se

Method for the production of esters and uses thereof

Alkyl esters (butyl, hexyl, or other) of full composition palm fatty acids, palm fatty acid distillates (pfad), and palm kernel fatty acid distillates (pkfad) can be used to generate polyurethane and lubricant products. The alkyl esters of the present invention can be produced via ozonolysis.
Petroliam Nasional Berhad

Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons

Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.. .
Honeywell International Inc.

Process for making polyarylethers and use in membrane preparation

A process for making polyarylethers provides a reaction mixture that includes a dipolar aprotic solvent for polyarylether and polyarylether forming reactants, and reacts the polyarylether-forming reactants, with removing of water with nitrogen in the absence of azeotrope forming cosolvent and optionally replacing removed amounts with dipolar aprotic solvent. The process can further include directly wet spinning the reactor solution without recovery of the polymer from the dipolar aprotic solvent through a spinneret to form hollow fibers or flat sheets suitable for membranes..
Fresenius Medical Care Holdings, Inc

Azeotrope-like compositions of cis-1,1,1,4,4,4-hexafluoro-2-butene

And another material selected from the group consisting of water, fluoroketones, alcohols, hydrochlorofluoroolefins, and combinations of two or more thereof. These compositions may be used in a wide variety of applications such as, blowing agents, refrigerants, heating agents, power cycle agents, cleaning agents, aerosol propellants, sterilization agents, lubricants, flavor and fragrance extractants, flammability reducing agents, and flame suppression agents..

Azeotrope-like compositions of z-1,1,1,4,4,4-hexafluoro-2-butene and e-1,1,1,4,4,4-hexafluoro-2-butene and uses thereof

azeotrope-like compositions are disclosed. The azeotrope-like compositions are mixtures of z-1,1,1,4,4,4-hexafluoro-2-butene and e-1,1,1,4,4,4-hexafluoro-2-butene.
E I Du Pont De Nemours And Company

Azeotropic or azeotrope-like composition, and producing 2,3,3,3-tetrafluoropropene or chloromethane

To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (hfo-1234yf) and chloromethane (r40) from a composition comprising hfo-1234yf and r40. An azeotrope-like composition comprising from 58 to 78 mol % of hfo-1234yf and from 22 to 42 mol % of r40, and a method for producing hfo-1234yf, which comprises steps of distilling an initial mixture containing hfo-1234yf in a content exceeding 63 mol % in the total amount of hfo-1234yf and r40, thereby to separate the initial mixture into a first fraction in which the content of hfo-1234yf in the total amount of hfo-1234yf and r40 is lower than the content of hfo-1234yf in the total amount of hfo-1234yf and r40 in the initial mixture, and a second fraction in which the content of hfo-1234yf in the total amount of hfo-1234yf and r40 is higher than the content of hfo-1234yf in the total amount of hfo-1234yf and r40 in the initial mixture, and then obtaining hfo-1234yf having a reduced r40 concentration, from the second fraction..
Asahi Glass Company, Limited

Azeotropic and azeotrope-like compositions of z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene, and a third component

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene and a third component.
E I Du Pont De Nemours And Company

Azeotropic or azeotrope-like composition and process for producing 2,3,3,3-tetrafluoropropene

The present invention provides a process for producing 2,3,3,3-tetrafluoropropene, comprising distilling a mixture of water and 2,3,3,3-tetrafluoropropene to separate the mixture into a first stream and a second stream, the first stream containing 2,3,3,3-tetrafluoropropene with a water content higher than the original mixture, and the second stream containing 2,3,3,3-tetrafluoropropene with a water content lower than the original mixture; and obtaining 2,3,3,3-tetrafluoropropene with a reduced water content from the second stream. The process of the invention can efficiently remove water from 2,3,3,3-tetrafluoropropene (hfo-1234yf)..
Daikin Industries, Ltd.

Compositions and use of vinylidene fluoride and blends thereof

The present technology relates to compositional blends that can be used as refrigerants, and more specifically to blends of vinylidene fluoride and at least one other component for use in very low temperature applications. In at least some examples, the second component can be selected from the group consisting of carbon dioxide and pentafluoroethane.

Azeotrope-like compositions comprising trans-1-chloro-3,3,3-trifluoropropene

An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of pentane, hexane, methanol, and trans-1,2-dichloroethene.. .



Azeotrope topics:
  • Hydrogen Fluoride
  • Refrigerant
  • Carbon Dioxide
  • Ethylene Glycol
  • Surfactant
  • Dental Adhesive
  • Tetrafluoro
  • Hydrofluorocarbon
  • Polymerization Process
  • Alkylene Glycol
  • Acetic Acid


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