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Azeotrope

Azeotrope-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Separation of organic acids from mixtures containing ammonium salts of organic acids
June 14, 2018 - N°20180162797

The invention relates to a process for separation of organic acids from mixture of ammonium salts of one or more organic acids and other compounds via an integrated process. The process involves suspending mixture of ammonium salts of one or more organic acids and other compounds in dry hydrocarbon solvent/s or mixtures thereof; wherein the selected hydrocarbon solvent/s ...
Apparatuses and methods for energy efficient separations including refining of fuel products
Government Of The United States As Represented By The Secretary Of The Air Force
May 17, 2018 - N°20180134970

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.
A fluorination method for phosphonitrilic chloride trimer and its derivatives
Zibo Lanyin Chemical Co., Ltd
May 03, 2018 - N°20180118768

The present invention relates to a fluorination method for phosphonitrilic chloride trimer and its derivatives including using phosphonitrilic chloride or partially substituted phosphonitrilic chloride trimer as raw material to fluorinate with fluoridating agent in an ionic liquid to replace the chlorine in chloro-cyclotiphosphazene molecule. The present invention uses non-volatile and pollution free ionic liquids as solvent, and just controls a ...
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Method for preparing 3-trifluoromethyl chalcones
E.i. Du Pont De Nemours And Company
March 01, 2018 - N°20180057468

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 ...
Azeotropic or azeotrope-like compositions of 3,3,3-trifluoropropyne and water
Honeywell International Inc.
March 01, 2018 - N°20180057434

Azeotropic or azeotrope-like compositions of 3,3,3-trifluoropropyne and water, such as from about 1 to about 50 wt. % water and from about 50 to about 99 wt.
Azeotropic or azeotrope-like compositions of 1,3,3-trichloro-3-fluoro-1-ene (hcfo-1231zd) and hydrogen fluoride (hf)
Honeywell International Inc.
March 01, 2018 - N°20180057433

Azeotropic or azeotrope-like mixtures of 1,3,3-trichloro-3-fluoroprop-1-ene (hcfo-1231zd) and hydrogen fluoride (hf). Such compositions are useful as a feed stock or intermediate in the production of 1,1,1,3,3-pentafluoropropane (hfc-245fa),1-chloro-3,3,3-trifluoropropene (hcfo-1233zd), and 1,3,3,3-tetrafluoropropene (hfo-1234ze)..
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A method for recovering polymer from printed petg substrates
Nicrometal S.a.
March 01, 2018 - N°20180056696

A method for recovering polymer from printed glycol-modified poly(ethylene tefephtalate) (petg) substrates, comprising the steps of: providing a printed petg substrate with the print layer comprising pigments and/or dyes dispersed in a binder matrix; chopping the substrate into irregular strips and; treating the chopped substrate with a treating composition; wherein the treating composition is an aqueous azeotrope of ...
Separation of (z)-1-chloro-3,3,3-trifluoropropene (hcfo-1233zd(z)) and 1-chloro-1,3,3,3-tetrafluoropropane (hcfc-244fa) by ...
Honeywell International Inc.
March 01, 2018 - N°20180056210

A method for separating halocarbons and, in particular, a method for separating (z)-1-chloro-3,3,3-trifluoropropene (hcfo-1233zd(z), or simply 1233zd(z)) and 1-chloro-1,3,3,3-tetrafluoropropane (hcfc-244fa, or simply 244fa) via distillation by adding a third component, hydrogen fluoride (hf), forming a binary azeotrope of 1233zd(z) and hf. The binary 1233zd(z)/hf azeotrope may then be recovered ...
Separation systems and methods of using them
February 15, 2018 - N°20180043279

Certain embodiments described herein are directed to separation systems and methods effective to separate two or more solvents in a solvent mixture. In certain examples, a system effective to separate two or more azeotrope forming solvents is provided.
Azeotropic and azeotrope-like compositions of z-1-chloro-3,3,3-trifluoropropene
The Chemours Company Fc, Llc
February 15, 2018 - N°20180043199

This application provides azeotropic and near-azeotropic compositions of z-1233zd and a second component selected from the group consisting of z-1336mzz, isopentane, e-1438ezy, e-1233zd and hbfo-1233xfb. The inventive compositions are useful as aerosol propellants, refrigerants, cleaning agents, expansion agents for thermoplastic and thermoset foams, solvents, heat transfer media, gaseous dielectrics, fire extinguishing and suppression agents, power ...
Method for preparation of 5-alkylsalicylaldoximes and application thereof
Politechnika Warszawska
December 21, 2017 - N°20170362168

Method for preparation of 5-alkylsalicylaldoximes with formula 1, where r is a c6-c16 alkyl group, consisting in that into a water-alcohol solvent system, p-alkylphenol, sodium hydroxide, chloroform and hydroxylamine are introduced, while in relation to the alkylphenol used, sodium hydroxide and chloroform are used in amounts from the stoichiometric amount to a 100% excess, and hydroxylamine is used in amounts from ...
Process for the separation of glycols
Shell Oil Company
December 21, 2017 - N°20170362150

The invention provides a process for the separation of meg from a glycol stream comprising meg and 1,2-bdo, said process comprising the steps of: (a) providing the glycol stream and an azeotrope-forming agent to a distillation column, (b) subjecting the glycol stream and the azeotrope-forming agent to distillation at a distillation temperature and a distillation pressure; (c) obtaining a first ...
Azeotrope-like compositions comprising trans-1-chloro-3,3,3-trifluoropropene
Honeywell International Inc.
November 23, 2017 - N°20170335081

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.. .
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Azeotropic composition having fluorine-containing olefin as constituent
Central Glass Company, Limited
November 09, 2017 - N°20170321167

A liquid composition according to one embodiment of the present invention contains 0.0001 mol % to 40 mol % (z)-1,2-dichloro-3,3,3-trifluoropropene (1223z) and 99.9999 mol % to 60 mol % (e)-1,2-dichloro-ethylene (t-dce). The liquid composition has less influence on the global environment and azeotropic (or azeotrope-like) properties.
Polyarylethersulfone copolymers
November 09, 2017 - N°20170321031

Where the reaction mixture (rg) does not comprise any substance which forms an azeotrope with water.. .
Composition and use of vinylidene fluoride and blends thereof
November 02, 2017 - N°20170313923

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.
Integrated process to produce 2,3,3,3-tetrafluoropropene
November 02, 2017 - N°20170313639

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..
Process for manufacturing medium and high molecular weight polyesters
Valspar Sourcing, Inc.
October 26, 2017 - N°20170306086

Medium and high molecular weight polyester polymers are prepared in syrup form from an ester oligomer. The oligomer is converted to the polymer by polycondensation at elevated pressure and elevated temperature in a nonreactive carrier capable of forming an azeotrope with water.
Method for producing diesters of terephthalic acid with enrichment of recirculated alcohol
October 19, 2017 - N°20170297998

The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst, and water of reaction is distilled ...
Method for producing diesters of terephthalic acid with a dehydration of recirculated alcohol
October 19, 2017 - N°20170297997

The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst, and water of reaction is distilled ...
Method for producing diesters of terephthalic acid with circulation of the reaction mixture
October 19, 2017 - N°20170297996

The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst, a reaction suspension is drawn off ...
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