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Azeotrope patents



      
           
This page is updated frequently with new Azeotrope-related patent applications. Subscribe to the Azeotrope RSS feed to automatically get the update: related Azeotrope RSS feeds. RSS updates for this page: Azeotrope RSS RSS


Date/App# patent app List of recent Azeotrope-related patents
03/19/15
20150080599
 Method for the production of esters and uses thereof patent thumbnailMethod 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
03/05/15
20150065585
 Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons patent thumbnailAzeotrope-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.
02/19/15
20150048533
 Process for making polyarylethers and use in membrane preparation patent thumbnailProcess 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
01/15/15
20150018429
 Azeotrope-like compositions of cis-1,1,1,4,4,4-hexafluoro-2-butene patent thumbnailAzeotrope-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..
01/15/15
20150014606
 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 patent thumbnailAzeotrope-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
01/08/15
20150008357
 Azeotropic or azeotrope-like composition, and  producing 2,3,3,3-tetrafluoropropene or chloromethane patent thumbnailAzeotropic 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
01/01/15
20150001433
 Azeotropic and azeotrope-like compositions of  z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene, and a third component patent thumbnailAzeotropic 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
12/18/14
20140367606
 Azeotropic or azeotrope-like composition and process for producing 2,3,3,3-tetrafluoropropene patent thumbnailAzeotropic 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.
12/11/14
20140360209
 Compositions and use of vinylidene fluoride and blends thereof patent thumbnailCompositions 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.
11/27/14
20140346390
 Azeotrope-like compositions comprising trans-1-chloro-3,3,3-trifluoropropene patent thumbnailAzeotrope-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.. .
11/13/14
20140336291

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.. .
10/16/14
20140305667

Azeotrope-like compositions of e-1-chloro-2,3,3,3-tetrafluoropropene and uses thereof


azeotrope-like compositions are disclosed. The azeotrope-like compositions are mixtures of e-1-chloro-2,3,3,3-tetrafluoropropene with e-1,1,1,4,4,4-hexafluoro-2-butene or e-1,1,1,4,4,5,5,5-octafluoro-2-pentene.
09/25/14
20140284517

Azeotrope-like compositions of tetrafluoropropene and water


Provided are azeotropic and azeotrope-like compositions of trans-1,3,3,3-tetrafluoropropene (hfo-1234ze(e)) and water. Such azeotropic and azeotrope-like compositions are useful in isolating trans-1,3,3,3-tetrafluoropropene from impurities during production.
09/18/14
20140275652

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..
09/18/14
20140264174

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..
09/18/14
20140264173

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..
09/18/14
20140264154

Azeotropic compositions of 1,3,3-trichloro-1,1-difluoropropane and hydrogen fluoride


Provided are azeotropic or azeotrope-like mixtures of 1,3,3-trichloro-1,1-difluoropropane (hcfo-242fa) and hydrogen fluoride. Such compositions are useful as a feed stock or intermediate in the production of hfc245fa and hcfo1233zd..
09/18/14
20140264148

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


An azeotrope-like mixture consisting essentially of a binary azeotrope-like mixture consisting essentially of trans-1-chloro-3,3,3-trifluoropropene (trans-hfo-1233zd) and a second component selected from the group consisting of 2,3,3,3-tetrafluoropropene (hfo-1234yf) and trans-1,3,3,3-tetrafluoropropene (trans-hfo-1234ze), and combinations of these and various uses thereof.. .
08/21/14
20140231240

Separation of r-1233 from hydrogen fluoride


The invention relates to a process for separating monochloro-trifluoropropenes such as hcfc-1233 from azeotrope or azeotrope like combinations with hf. The process employs a cold, liquid phase separations and multiple azeotropic distillation trains..
07/24/14
20140206589

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


The present invention relates, in part, to binary azeotropic compositions and mixtures including chlorotrifluoropropene and petroleum ether and 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..
07/03/14
20140187777

Materials and methods for the base-assisted synthesis of substituted heteroaromatic compounds


Disclosed herein are some methods for synthesizing the base-assisted coupling of aromatic alcohols with substituted aromatic compounds including some substituted heteroaromatic compounds such as pyrimidines or pyridines to form esters. The reactions may include inexpensive bases such as potassium hydroxide and take place in a solvent mixture comprised primarily of hindered tertiary alcohols that are at least partially immiscible with water.
06/26/14
20140178312

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.. .
06/05/14
20140155617

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 nr12 r13, and r11, r12 and r13 are as defined in the disclosure.
05/15/14
20140131613

Refrigerants


Refrigerants for use in a thermodynamic cycle taking place in a system producing either hot or cold are disclosed. The refrigerants comprise binary azeotrope mixture of saturated hydrocarbon with either methanol or ethanol.
05/08/14
20140128559

Azeotropes of isobutylene with fluoro-olefins


Azeotropic or azeotrope-like compositions of the present invention include trans-1,3,3,3-tetrafluoroprop-1-ene and isobutylene. The azeotropic or azeotrope-like compositions can be used in polymerization processes, including slurry polymerization processes..
04/24/14
20140114093

System and continuously producing polyoxymethylene dialkyl ethers


A reaction system and method for producing polyoxymethylene dialkyl ethers (ro(ch2o)nr, n=1-8) by continuous acetalation of formaldehyde and aliphatic alcohol in the presence of an acid ionic liquid catalyst. The reaction system includes an acetalation reaction unit, a product separation unit, and a catalyst regeneration unit.
03/20/14
20140077124

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.. .
02/20/14
20140048739

Compositions of chloro-trifluoropropene and hexafluorobutene


Provided are compositions, preferably azeotrope or azeotrope-like compositions comprised of 1,1,1,4,4,4-hexafluoro-2-butene and chlorotrifluoropropene, particularly 1-chloro-3,3,3-trifluoropropene (hcfo-1233zd), and uses thereof.. .
02/20/14
20140048737

Azeotrope-like compositions of pentafluoroethane and trifluoroiodomethane


Provided are azeotrope-like compositions comprising heptafluoropropane and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agents, fire suppressant compositions, and aerosol propellants.. .
01/09/14
20140012052

Azeotrope-like composition of 2-chloro-3,3,3-trifluoropropene (hcfc-1233xf) and hydrogen fluoride (hf)


Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (hcfo-1233xf) and hydrogen fluoride (hf). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (hfo-1234yf)..
12/19/13
20130338408

Process for separating hydrogen fluoride from organic feedstocks


Provided is a process for purifying an organic feedstock comprising (a) distilling a raw organic feedstock comprising hydrogen fluoride, 2-chloro-1,1,1,2-tetrafluoropropane, and 2-chloro-3,3,3-trifluoropropene to produce a first distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a first bottoms stream rich in hydrogen fluoride; (b) cooling said first distillate stream to produce an intermediate composition comprising an organic layer rich in 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, and an acid layer rich in hydrogen fluoride; and, optionally but preferably, (c) distilling said organic layer to produce a second distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a second bottoms stream comprising a purified organic feedstock substantially free of hydrogen fluoride.. .
11/14/13
20130298581

Producing heating using working fluids comprising z-1,1,1,4,4,4-hexafluoro-2-butene


Disclosed herein is a method for producing heating in a high temperature heat pump comprising condensing a vapor working fluid comprising z-1,1,1,4,4,4-hexafluoro-2-butene, in a condenser, thereby producing a liquid working fluid. Also disclosed herein is a method of raising the maximum feasible condenser operating temperature in a high temperature heat pump apparatus comprising charging the high temperature heat pump with a working fluid comprising z-1,1,1,4,4,4-hexafluoro-2-butene.
11/07/13
20130292599

Azeotropic and azeotrope-like compositions involving certain haloolefins and uses thereof


Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of (a) a compound of the formula cf3cx═chra where x is h or f and ra is cf3cf2, cf3 or cl, provided that (i) when x is f, ra is cl, (ii) when ra is cf3cf2 or cl, the compound of formula cf3cx═chra is the e configurational isomer, and (iii) when ra is cf3, the compound of formula cf3cx═chra is the z configurational isomer; and (b) a compound of the formula cf3rb where rb is chfch2f or ch═chcf3, provided that when rb is ch═chcf3, x is f and the compound of formula cf3rb is the z configurational isomer.
10/31/13
20130284584

Process for separating ethylene glycol and 1, 2-butanediol


The present invention relates to a process for separating ethylene glycol and 1,2-butanediol. A material flow containing ethylene glycol and 1,2-butanediol gets into the lower-middle part of the azeotropic rectification column c3 after the light components are removed by the separating columns c1 and c2, wherein the ethylene glycol and the azeotropic agent added from the top of the column form azeotrope which is distilled out from the top of the column and gets into the phase separator d1 after being condensed, the upper phase enriched with azeotropic agent after the phase was separated returns to the top of the column to continue to participate in azeotropy, and the lower phase enriched with ethylene glycol gets into the fourth separating column c4 to be refined to obtain the ethylene glycol product..
09/19/13
20130244922

Azeotropic compositions comprising methyl perfluoropentene ethers for cleaning applications


The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoropentene ethers and at least one of methanol, ethanol, 2-propanol, hexane, heptane, trans-1,2-dichloroethylene, ethyl formate, methyl formate, hfe-7100, hfe-7200 and 1-bromopropane or combinations thereof. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions..
08/29/13
20130221273

Azeotropic compositions of 1,1,3,3-tetrachloro-1-fluoropropane and hydrogen fluoride


Provided are azeotropic or azeotrope-like mixtures of 1,1,3,3-tetrachloro-1-fluoropropane (hcfc-241fa) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of hfc-245fa and hcfo-1233zd..
08/29/13
20130221272

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


Provided are 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..
08/22/13
20130217929

Azeotrope-like composition of hexafluoropropane, hexafluoropropene and hydrogen fluoride


The present invention relates to an azeotropic or azeotrope-like mixture consisting essentially of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and hydrogen fluoride.. .
08/22/13
20130217800

Hydrophobic self-etch dental adhesive compositions


A hydrophobic self-etch dental adhesive composition including a hydrophobic, surfactant-type acidic monomer. The composition may further include hydrophilic and hydrophobic monomers, preferably in a ratio of less than 1:1, and may include a solvent that is an azeotrope..
07/04/13
20130167568

Apparatus and measuring concentration of liquid-state refrigerant of nonazeotrope refrigerant mixture, and absorption type, 1-stage compressing-absorbing type and 2-stage compressing-absorbing type heat pump including the apparatus


An apparatus and method for measuring concentration of a liquid-state refrigerant of a nonazeotrope refrigerant mixture. A container is disposed in such a way that a liquid-state refrigerant mixture of the nonazeotrope refrigerant mixture in a saturated state is temporarily stored with set quality.
06/20/13
20130158218

Azeotropes of methyl chloride with fluorocarbons


Azeotropic or azeotrope-like compositions of the present technology include methyl chloride and at least one hydrofluorocarbon or hydrofluoro-olefin. In some examples, the at least one hydrofluorocarbon or hydrofluoro-olefin can be selected from the group consisting of 1,1,1,2-tetrafluoroethane and 1,3,3,3-tetrafluoropropene.
06/20/13
20130153817

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.
06/13/13
20130149422

Animal feed processing agents, animal feeds and methods of processing animal feed


Animal feed processing agents containing an azeotrope comprising water, an alcohol, and sodium stabilized by surrounding organized water. Methods of processing animal feed utilizing steam flaking in the presence of added agent comprising an alcohol, and sodium stabilized by surrounding organized water.
06/06/13
20130144080

Process for obtaining a dialkyl carbonate and an alkylene glycol


(b) separating the stream (5) comprising dialkyl carbonate and alkylene glycol as a heteroazeotrope into a first crude product stream (27) comprising essentially di-alkyl carbonate and a second crude product stream (29) comprising essentially alkylene glycol in an apparatus for phase separation (25).. .
05/23/13
20130131404

Azeotrope-like compositions of (z)-1-chloro-3,3,3-trifluoropropene and hydrogen fluoride


Disclosed are azeotropic and azeotrope-like mixtures of (z)-1-chloro-3,3,3-trifluoropropene (1233zd(z)) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of 1233zd(z).
05/23/13
20130131392

Methods for producing ethyl tert-butyl ether


Embodiments of methods for producing ethyl tert-butyl ether (etbe) are provided herein. A method for producing etbe comprises the steps of contacting a c4 olefin-rich stream that contains isobutene with a first catalyst in the presence of ethanol at etherification conditions effective to form a reaction effluent comprising etbe and residual ethanol.
05/16/13
20130119292

Azeotropic and azeotrope-like compositions of z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene, and 1,1,1,3,3-pentafluorobutane


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 1,1,1,3,3-pentafluorobutane.
05/16/13
20130118892

Isolation of acrylic acid by means of a distillation column having a side offtake


The present process separates acrylic acid from a composition containing acrylic acid and at least one accompanying product. The process first involves contacting the composition with an aqueous liquid stream to give a liquid solution of acrylic acid, accompanying product, and water.
05/02/13
20130109771

Azeotrope-like compositions including cis-1-chloro-3,3,3-trifluoropropene


The present invention relates, in part, to azeotrope and azeotrope-like mixtures consisting essentially of consisting essentially of cis-1-chloro-3,3,3-trifluoropropene and a second component selected from the group water, hexane, hfc-365mfc, and perfluoro(2-methyl-3-pentanone).. .
04/11/13
20130090501

Process for producing ethanol using a crude vinyl acetate feed


Converting a crude vinyl acetate feed to ethanol by hydrogenating the acetic acid and ethyl acetate in the crude vinyl acetate feed. The crude vinyl acetate feed may comprise acetic acid and/or ethyl acetate, as well as vinyl acetate and minor amounts of vinyl propionate.
03/28/13
20130079492

Process for preparing eddn and edmn


A process for preparing eddn and/or edmn by conversion of fa, hcn and eda, the reaction being effected in the presence of water, and, after the conversion, water being depleted from the reaction mixture in a distillation column, which comprises performing the distillation in the presence of an organic solvent which has a boiling point between water and eddn and/or edmn at the distillation pressure existing in the column or which forms a low-boiling azeotrope with water.. .
03/28/13
20130075063

Azeotrope-like compositions of cis-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane


The present invention provides azeotrope-like compositions of cis-1,3,3,3-tetrafluoroprone (hfo-1234ze (z)) with 1,1,1,3,3-pentafluoropropane (hfc-245fa) and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.. .
03/07/13
20130060002

Process for working up reaction outputs from the hydrogenation of eddn or edmn


A process is disclosed for separating the output from the reaction of eddn or edmn with hydrogen in the presence of thf, a catalyst, teta or deta, water, and optionally organic compounds having higher and lower boiling points than teta or deta. Hydrogen is removed, and the output is supplied to a distillation column dk1 in which an azeotrope, optionally comprising organic compounds with a boiling point lower than teta or deta, is removed from the top.
01/03/13
20130004435

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..


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

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