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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4388. Отображено 100.
26-07-2012 дата публикации

Process for producing diphenyl carbonate

Номер: US20120190878A1
Автор: J. Yong Ryu
Принадлежит: Shell Oil Co

Processes for producing diaryl carbonates are disclosed, where such processes may provide for the production of diaryl carbonates from green house gases, such as carbon dioxide. The processes disclosed advantageously integrate diethyl carbonate and diaryl carbonate production, eliminating the need for solvent-based extractive distillation, as is commonly required when producing diaryl carbonates from dimethyl carbonate, providing for the integration of separation equipment and raw material usage, and reducing the operating and capital requirements for such processes. In some embodiments, processes disclosed herein may be operated essentially closed-loop with respect to ethanol usage, for example.

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Номер записи: 1
08-11-2012 дата публикации

Process for the production of high-purity dimethyl carbonate

Номер: US20120283464A1
Автор: Elena Novello, Laura de Nardo, Maurizio Ghirardini
Принадлежит: Versalis Spa

A process for producing a high-purity dimethyl carbonate, which includes: (I) cooling a commercial grade dimethyl carbonate containing 1 ppm or more of chlorine to a temperature from +6° C. to −5° C. at a rate from 0.5-2° C./hour, to obtain a first solid dimethyl carbonate; (II) heating the first solid dimethyl carbonate to a temperature from −5° C. to +6° C. at a rate of 1-5° C./hour, to obtain a mixture comprising a second solid dimethyl carbonate and a predetermined amount of a first liquid dimethyl carbonate; (III) separating the first liquid dimethyl carbonate from the mixture, to obtain the second solid dimethyl carbonate; (IV) heating the second solid dimethyl carbonate to a temperature from 20° C. to 40° C., to obtain a second liquid dimethyl carbonate, wherein the second liquid dimethyl carbonate has a purity degree higher than 99.99% and a chlorine content lower than or equal to 1 ppm.

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Номер записи: 2
21-03-2013 дата публикации

Process for Making Modulators of Cystic Fibrosis Transmembrane Conductance Regulator

Номер: US20130072522A1
Автор: Adam R. Looker, Bobbianna J. Neubert-Langille, Brian R. Krueger, Dahrika Milfred Yap GUERETTE, Fredrick F. Van Goor, Gregor Zlokarnik, John Demattei, Martin Trudeau, Martyn Curtis Botfield, Michael P. Ryan, Peter Diederik Jan Grootenhuis, Stefanie Roeper
Принадлежит: Vertex Pharmaceuticals Inc

The invention provides a process for the preparation of a compound of Formula 1, comprising coupling a carboxylic acid of Formula 2 with an aniline of Formula 3 in the presence of a coupling agent.

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Номер записи: 3
11-04-2013 дата публикации

TRANSESTERIFICATION PROCESS USING MIXED SALT ACETYLACETONATES CATALYSTS

Номер: US20130090492A1
Автор: Goossens Thomas Peter Anne, Hosten Noel Gabriel Cornelius, Van Aken Koen Jeanne Alfons, Vrielynck Freek Annie Camiel
Принадлежит: ECOSYNTH BVBA

This invention is directed to a general catalyst of high activity and selectivity for the production of a variety of esters, particularly acrylate and methacrylate-based esters, by a transesterification reaction. This objective is achieved by reaction of an ester of a carboxylic or a carbonic acid, in particular of a saturated or unsaturated, typically, a 3 to 4 carbon atom carboxylic acid; with an alcohol in the presence of a catalyst comprising the combination of a metal 1,3-dicarbonyl complex (pref. Zn or Fe acetylacetonate) and a salt, in particular an inorganic salt, pref. ZnCl2, LiCI, NaCI, NH4CI or Lil. These catalysts are prepared from readily available starting materials within the reaction medium without the need for isolation (in-situ preparation). 1. A process for the transesterification of an ester of a carboxylic or a carbonic acid , comprising reacting the ester of the carboxylic or carbonic acid with an alcohol in the presence of a catalyst consisting of a mixture of a Zn or Fe 1 ,3-dicarbonyl complex and an inorganic salt.4. The process according to claim 2 , wherein R″ is alkyl; substituted alkyl; cycloalkyl; alkoxyalkyl; alkylpolyalkoxyalkyl; alkylphenoxyalkyl; alkylpolyphenoxyalkyl; phenylalkyl; alkylphenylalkyl; alkylmorpholinoalkyl; alkylpiperidinoalkyl; haloalkyl; cyanoalkyl; alkylthioalkyl; alkylimidazolidinones; mono- or di-alkyl-aminoalkyl; alkyl oxazolidines; hydroxy alkyl claim 2 , hydroxybutyl; and alkyls derived from ethylene glycol claim 2 , butanediol claim 2 , and polyoxyethyleneols.5. The process according to wherein the alcohol (R″OH) is selected from the group consisting of butanol claim 1 , pentanol claim 1 , isodecyl claim 1 , lauryl claim 1 , cetyl claim 1 , stearyl claim 1 , alkyl ether of polyoxyethylene claim 1 , dimethylaminoethanol claim 1 , 2-N-oxazolidinyl)ethyl claim 1 , 2-(N-morpholino)ethyl claim 1 , and dicyclopentenyloxyethyl.7. (canceled)8. The process of wherein the salt contains an inorganic cation selected from ...

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Номер записи: 4
16-05-2013 дата публикации

METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS

Номер: US20130123532A1
Автор: Grasser Stefan, Gürtler Christoph, Hofmann Jörg, Wolf Aurel
Принадлежит: Bayer Intellectual Property GmbH

The present invention relates to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of at least one double metal cyanide catalyst, wherein the cyanide-free metal salt, the metal cyanide salt or both the mentioned salts used for the preparation of the double metal cyanide catalyst contain(s) from 0.3 to 1.8 mol base equivalents (based on 1 mol of the metal cyanide salt used for the synthesis of the catalyst) of alkaline metal hydroxide, metal carbonate and/or metal oxide. 113-. (canceled)14. A process for preparing a polyether carbonate polyol comprising reacting one or more H-functional starter substances , one or more alkylene oxides , and carbon dioxide in the presence of at least one double metal cyanide catalyst prepared from a cyanide-free metal salt and a metal cyanide salt , wherein said cyanide-free metal salt and/or said metal cyanide salt comprises from 0.3 to 1.8 mol base equivalents , based on 1 mol of said metal cyanide salt , of an alkaline metal hydroxide , metal carbonate , and/or metal oxide.15. The process of claim 14 , wherein said at least one double metal cyanide catalyst is prepared by reacting an aqueous solution of said cyanide-free metal salt with an aqueous solution of said metal cyanide salt in the presence of one or more organic complex ligands claim 14 , wherein said aqueous solution of said cyanide-free metal salt and/or said aqueous solution of said metal cyanide salt comprises one or more alkaline metal hydroxides claim 14 , metal carbonates claim 14 , and/or metal oxides claim 14 , and wherein the total amount of said one or more alkaline metal hydroxides claim 14 , metal carbonates claim 14 , and/or metal oxides used is in the range of from 0.3 to 1.8 mol base equivalents claim 14 , based on 1 mol of the metal cyanide salt.17. The process of claim 14 , wherein said cyanide-free metal salt and/or said metal ...

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Номер записи: 5
06-06-2013 дата публикации

Process for obtaining a dialkyl carbonate and an alkylene glycol

Номер: US20130144080A1
Автор: Andrea Schmidt, Axel Franzke, Michael Bock, Robert Baumann, Roderich Roettger
Принадлежит: BASF SE

The invention relates to a process for obtaining a dialkyl carbonate and an alkylene glycol from a stream comprising dialkyl carbonate, alkylene carbonate, alkylene glycol and alcohol, comprising the following steps: (a) distillatively removing a stream ( 5 ) comprising dialkyl carbonate and alkylene glycol as a heteroazeotrope from the stream comprising dialkyl carbonate, alkylene carbonate, alkylene glycol and alcohol in a first distillation stage ( 1 ), (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 ).

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Номер записи: 6
13-06-2013 дата публикации

PROCESS FOR PRODUCING AROMATIC CARBONATES

Номер: US20130150609A1
Автор: VAPORCIYAN Garo Garbis
Принадлежит: SHELL OIL COMPANY

This invention provides a method for producing an alkylaryl carbonate comprising: a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in a reactive distillation column containing a bed of heterogeneous transesterification catalyst, the bed having a top and a bottom; and b) withdrawing a product stream comprising the alkylaryl carbonate from the reactive distillation column wherein the aromatic hydroxy compound is fed to the column at a first feed point located above the top of the catalyst bed. This invention further provides an apparatus suitable for carrying out this method. 1. A method for producing an alkylaryl carbonate comprising:a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in a reactive distillation column containing a bed of heterogeneous transesterification catalyst, the bed having a top and a bottom; and 'wherein the aromatic hydroxy compound is fed to the column at a first feed point located above the top of the catalyst bed.', 'b) withdrawing a product stream comprising the alkylaryl carbonate from the reactive distillation column'}2. A method as claimed in wherein the aromatic hydroxy stream contains water.3. A method as claimed in where the reactive distillation column contains an item selected from the group consisting of trays and packing between the top of the catalyst bed and the first feed point.4. A method as claimed in where the reactive distillation column contains a second catalyst bed between the top of the catalyst bed and the first feed point.5. A method as claimed in wherein the second catalyst accelerates the reaction of water with dialkylcarbonate.6. A method as claimed in further comprising feeding a homogeneous transesterification catalyst to the reactive distillation column.7. A method as claimed in wherein the homogeneous transesterification catalyst is fed to the column at a point below the first feed point.8. A method ...

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Номер записи: 7
27-06-2013 дата публикации

Reactive Recovery of Dimethyl Carbonate from Dimethyl Carbonate/Methanol Mixtures

Номер: US20130165669A1
Автор: Posey Mark, Zhao Haibo
Принадлежит: Huntsman Petrochemical LLC

A method of producing a carbonate product including mixing a DMC and methanol mixture with an alcohol, reacting the DMC with the alcohol to form carbonate product, and removing a substantial portion of unreacted DMC and methanol. In one embodiment, the method may be repeated to reach a desired alcohol conversion by adding more DMC and methanol mixture. 1. A method of producing a carbonate comprising:mixing a DMC and methanol composition having 20% to 80% DMC by weight with an alcohol having 2 to 15 carbon atoms;reacting the DMC with the alcohol to form a carbonate product; andremoving a substantial portion of unreacted DMC and methanol, thereby forming a product composition containing the carbonate product.2. The method of claim 1 , further comprising mixing an additional amount of DMC and methanol composition having 20% to 80% DMC by weight with the product composition; andremoving a substantial portion of unreacted DMC and methanol, thereby forming a second product composition.3. The method of claim 2 , the method further comprising mixing an at least 95% by weight of DMC composition with the second product composition.4. The method of claim 2 , further comprising repeating at least one time the steps of mixing additional amount of DMC and methanol composition and removing substantial portion of unreacted DMC and methanol before performing the step of mixing the at least 95% by weight of DMC composition.5. The method of claim 4 , wherein the product composition after each step of removing substantial portion of unreacted DMC and methanol includes less than 10% by weight of unreacted DMC or methanol.6. The method of claim 1 , wherein the product composition includes less than 10% by weight of unreacted DMC or methanol.7. The method of claim 1 , wherein the alcohol is one of alkyl alcohol and alkyl aryl alcohol.8. The method of claim 7 , wherein the alcohol is glycerine.9. The method of claim 7 , wherein the alcohol is one of phenol claim 7 , ethanol claim 7 , ...

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Номер записи: 8
01-08-2013 дата публикации

Process for the preparation of surface-treated calcium carbonate material and use of same in the control of organic material in an aqueous medium

Номер: US20130192784A1
Автор: Daniel Gantenbein, Joachim Schölkopf, Matthias Buri, Patrick A.C. Gane, Samuel Rentsch
Принадлежит: Omya International AG

The present invention relates to a process for the production of a surface-treated calcium carbonate, the use of this surface-treated calcium carbonate in a process for the control of organic material in an aqueous medium, as well as to a composite of surface-treated calcium carbonate and organic material, such as a composite of surface-treated calcium carbonate and to the use of such a composite.

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Номер записи: 9
29-08-2013 дата публикации

Process for preparing dialkyl carbonate and diol products

Номер: US20130225850A1
Автор: Ray Montez, Xiankuan Zhang
Принадлежит: Saudi Basic Industries Corp

Dialkyl carbonate and diol products are prepared in an integrated process performed by reacting an alkylene oxide with carbon dioxide in the presence of a non-halide-containing homogeneous carbonation catalyst in a first reaction zone to form a crude cyclic carbonate product. The crude cyclic carbonate product is introduced along with an aliphatic monohydric alcohol to a second reaction zone containing a transesterification catalyst. The transesterification catalyst is comprised of a strongly basic Type I ion exchange resin in gel having a particular form. The cyclic carbonate product and monohydric alcohol are reacted to form the dialkyl carbonate and diol products. In another aspect, dialkyl carbonate and diol products are prepared in an integrated process wherein a halide-containing homogeneous carbonation catalyst is used to form a crude cyclic carbonate product that is then used in a transesterification reaction. The transesterification catalyst is regenerated to accommodate the effects of the halide-containing catalyst.

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Номер записи: 10
10-10-2013 дата публикации

Process for Preparing Dialkyl Carbonate and Diol Products

Номер: US20130267727A1
Автор: Montez Ray, Zhang Xiankuan
Принадлежит:

Dialkyl carbonate and diol products are prepared in an integrated process performed by reacting an alkylene oxide with carbon dioxide in the presence of a non-halide-containing homogeneous carbonation catalyst in a first reaction zone to form a crude cyclic carbonate product. The crude cyclic carbonate product is introduced along with an aliphatic monohydric alcohol to a second reaction zone containing a transesterification catalyst. The transesterification catalyst is comprised of a strongly basic Type I ion exchange resin in gel having a particular form. The cyclic carbonate product and monohydric alcohol are reacted to form the dialkyl carbonate and diol products. In another aspect, dialkyl carbonate and diol products are prepared in an integrated process wherein a halide-containing homogeneous carbonation catalyst is used to form a crude cyclic carbonate product that is then used in a transesterification reaction. The transesterification catalyst is regenerated to accommodate the effects of the halide-containing catalyst. 1. A method of preparing a dialkyl carbonate and diol products in an integrated process comprising:(a) reacting an alkylene oxide with carbon dioxide in the presence of a halide-containing homogeneous carbonation catalyst in a first reaction zone to form a crude cyclic carbonate product, the crude cyclic carbonate product containing amounts of the carbonation catalyst;(b) introducing the crude cyclic carbonate product from the first reaction zone along with an aliphatic monohydric alcohol to a second reaction zone containing a transesterification catalyst comprised of an ion exchange resin and allowing the cyclic carbonate product and monohydric alcohol to react under reaction conditions to form the dialkyl carbonate and diol products until the ion exchange resin catalyst has deactivated to a selected degree; and(c) regenerating the deactivated ion exchange resin of the second reaction zone by washing the ion exchange resin with water and ...

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Номер записи: 11
14-11-2013 дата публикации

Device and process for continuous phosgenation

Номер: US20130303783A1
Автор: Alexandre Trani, Fabrice De Panthou, Raimondo Pilia, Sabrina Marie
Принадлежит: AET Group

A continuous process for generation of phosgene from CO and Cl 2 and consumption of the phosgene thus generated in a liquid-phase reaction so as to form organic products P. The process is implemented in two successive reactors R1 and R2, the first reactor R1 being a reactor for catalytic synthesis of phosgene from CO and Cl2 gas, and the second reactor R2 being a piston reactor, the second reactor R2 being equipped with a mechanical axial agitation device.

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Номер записи: 12
28-11-2013 дата публикации

SUPPORTED QUATERNARY PHOSPHONIUM CATALYST, PREPARATON AND USE THEREOF

Номер: US20130317179A1
Автор: CHEN Liangfeng, He Wenjun
Принадлежит:

This invention relates to a supported quaternary phosphonium catalyst, preparation thereof and use thereof in producing dialkyl carbonates. The supported quaternary phosphonium catalyst of this invention has the following average molecular structure (I), and is characterized by a relatively high and stable catalyst activity. 2. The supported quaternary phosphonium catalyst according to claim 1 , having an elution loss D of less than 2% claim 1 , preferably less than 1.5% claim 1 , more preferably less than 1% claim 1 , more preferably less than 0.8% claim 1 , further more preferably less than 0.5% claim 1 , wherein the elution loss D is determined according to a method comprising weighting 2 g of the supported quaternary phosphonium catalyst with a P content of P1 (unit: wt %) claim 1 , (1) suspending the supported quaternary phosphonium catalyst in 40 ml methanol claim 1 , stirring (at a stirring speed of 100 rpm) the resultant at 100° C. for 4 h claim 1 , then immediately filtering the resultant so as to separate the supported quaternary phosphonium catalyst claim 1 , (2) then claim 1 , suspending the separated supported quaternary phosphonium catalyst in 40 ml methanol claim 1 , stirring (at a stirring speed of 100 rpm) the resultant at 100° C. for 4 h claim 1 , then immediately filtering the resultant so as to separate the supported quaternary phosphonium catalyst claim 1 , repeating the process (2) for further 10 times claim 1 , and then determining the P content of the finally separated supported quaternary phosphonium catalyst as P2 (unit: wt %) claim 1 , and then calculating the elution loss D as follows:{'br': None, 'i': D', 'P', '−P', 'P, '=(12)/1×100%.'}4. The process according to claim 3 , wherein the reaction temperature is 100 to 190° C. claim 3 , preferably 120 to 190° C. claim 3 , and the reaction duration is 10 to 40 h claim 3 , preferably 10 to 30 h.6. The process according to claim 5 , wherein the reaction temperature is 70 to 140° C. claim 5 , ...

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Номер записи: 13
05-12-2013 дата публикации

PROCESSES AND REAGENTS FOR MAKING DIARYLIODONIUM SALTS

Номер: US20130324718A1
Автор: DiMagno Stephen
Принадлежит:

This invention relates to processes and reagents for making diaryliodonium salts, which are useful for the preparation of fluorinated and radiofluorinated aromatic compounds. 2. The process of claim 1 , wherein the process is carried out in the absence of added acid.3. The process of claim 1 , wherein the process utilizes (1-chloromethyl-4-fluoro-1 claim 1 ,4-diazoniabicyclo[2.2.2]octane)bis(tetrafluoroborate).4. The process of claim 1 , wherein the process utilizes (1-fluoro-4-methyl-1 claim 1 ,4-diazoniabicyclo[2.2.2]octane)bis(tetrafluoroborate).5. The process of claim 1 , wherein the process utilizes N-fluoro-2 claim 1 ,3 claim 1 ,4 claim 1 ,5 claim 1 ,6-pentachloropyridinium tetrafluoroborate.6. The process of claim 1 , wherein the process utilizes less than 2 equivalents of (1-chloromethyl-4-fluoro-1 claim 1 ,4-diazoniabicyclo[2.2.2]octane)bis(tetrafluoroborate) claim 1 , (1-fluoro-4-methyl-1 claim 1 ,4-diazoniabicyclo[2.2.2]octane)bis(tetrafluoroborate) claim 1 , or optionally substituted N-fluoropyridinium tetrafluoroborate for 1 equivalent of the compound of Formula II.7. The process of claim 1 , wherein the process utilizes less than 1.5 equivalents of (1-chloromethyl-4-fluoro-1 claim 1 ,4-diazoniabicyclo[2.2.2]octane)bis(tetrafluoroborate) claim 1 , (1-fluoro-4-methyl-1 claim 1 ,4-diazoniabicyclo[2.2.2]octane)bis(tetrafluoroborate) claim 1 , or optionally substituted N-fluoropyridinium tetrafluoroborate for 1 equivalent of the compound of Formula II.8. The process of claim 1 , wherein each X is claim 1 , independently claim 1 , a ligand that is a conjugate base of an acid HX claim 1 , wherein HX has a pKa of less than or equal to 5.9. The process of claim 1 , wherein each X is O(C═O)CH.10. The process of claim 1 , wherein the tetravalent silicon moiety is (R)Si—X claim 1 , wherein each Ris claim 1 , independently claim 1 , Calkyl or aryl.11. The process of claim 10 , wherein each Ris methyl.12. The process of claim 10 , wherein (R)Si—X is (CH)Si—X.13. The ...

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Номер записи: 14
23-01-2014 дата публикации

Stabilization of dicarbonate diesters with protonic acids

Номер: US20140024850A1
Автор: Erasmus Vogl, Johannes Kaulen, Steffen Kahlert
Принадлежит: LANXESS DEUTSCHLAND GMBH

By using protonic acids, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and protonic acids are outstandingly suitable for preserving foods.

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Номер записи: 15
20-02-2014 дата публикации

Modulators of atp-binding cassette transporters

Номер: US20140051724A1
Автор: Anna Hazlewood, Ashvani Singh, Fredrick Van Goor, Jason Mccartney, Jinglan Zhou, Peter Grootenhuis, Sara Hadida-Ruah
Принадлежит: Vertex Pharmaceuticals Inc

The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.

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Номер записи: 16
20-02-2014 дата публикации

Method for preparing dialkyl carbonate

Номер: US20140051880A1
Автор: Chul Ung Kim, Dong Jun Koh, Jae Cheon Koh, Joon Hyun Baik, Kyong Tae Kim, Young Sam Sa, Yun Min Kim
Принадлежит: Research Institute of Industrial Science and Technology RIST

Disclosed is a method for preparing a dialkyl carbonate, in which a dialkyl carbonate such as dimethyl carbonate is economically prepared in an environmentally-friendly manner at a higher yield while reducing generation of a by-product. The method for preparing the dialkyl carbonate includes reacting urea, an alkyl carbamate having 1 to 3 carbon atoms, or a mixture thereof with a monovalent alcohol having 1 to 3 carbon atoms in the presence of a room temperature ionic liquid and a catalyst including a salt of a transition metal or a rare earth metal.

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Номер записи: 17
20-03-2014 дата публикации

PROCESS FOR THE CONTINUOUS MANUFACTURE OF ARYL ALKYL CARBONATE AND/OR DIARYL CARBONATE USING VAPOR RECOMPRESSION

Номер: US20140081039A1
Автор: Anton Juan Javaloyes, Caballero Jose Antonio, Fernandez Ignacio Vic, Nadal Sergio Ferrer
Принадлежит: SABIC INNOVATIVE PLASTICS IP B.V.

In an embodiment, a process for preparing an alkyl aryl carbonate and a diaryl carbonate, comprising: reacting a dialkyl carbonate and an aromatic hydroxy compound in a production column to form the alkyl aryl carbonate and the diaryl carbonate; directing a bottom stream of the production column to a reboiler , wherein the bottom stream comprises the alkyl aryl carbonate and the diaryl carbonate; heating the bottom stream in the reboiler with heat from an overhead stream of the production column to result in a heated bottom stream; directing a first portion of the heated bottom stream back into the production column , wherein the first portion comprises phenol; and collecting the diaryl carbonate and the alkyl aryl carbonate from a second portion of the heated bottom stream. 1. A process for preparing an alkyl aryl carbonate and a diaryl carbonate , comprising:{'b': 200', '300, 'reacting a dialkyl carbonate and an aromatic hydroxy compound in a production column , to form the alkyl aryl carbonate and the diaryl carbonate;'}{'b': 205', '305, 'directing a bottom stream of the production column to a reboiler , , wherein the bottom stream comprises the alkyl aryl carbonate and the diaryl carbonate;'}{'b': 205', '305', '200', '300, 'heating the bottom stream in the reboiler , with heat from an overhead stream of the production column , to result in a heated bottom stream;'}{'b': 200', '300, 'directing a first portion of the heated bottom stream back into the production column , , wherein the first portion comprises phenol; and'}collecting the diaryl carbonate and the alkyl aryl carbonate from a second portion of the heated bottom stream.2. The process of claim 1 , wherein the heating of the bottom stream comprises{'b': '203', 'compressing the overhead stream in a compressor resulting in a heated overhead stream; and'}heating the bottom stream with the heated overhead stream.3205200. The process of claim 2 , further comprising splitting the heated overhead stream after it ...

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Номер записи: 18
03-04-2014 дата публикации

METHOD FOR PREPARING DIALKYL CARBONATE

Номер: US20140094621A1
Автор: Kim Chul Ung, KIM Yun Min, Koh Jae Cheon
Принадлежит: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

The present invention provides a method for preparing dialkyl carbonate from urea or alkyl carbamate and alkyl alcohol using an ionic liquid comprising a cation, which produces a hydrogen ion, and a hydrophobic anion containing fluorine with high temperature stability in the presence of catalyst containing a metal oxide or hydrotalcite. Since the present invention can prepare dialkyl carbonate at a pressure lower than those of existing methods, it does not require an expensive pressure control device and peripheral devices for maintaining high pressure including the installation cost. It is also the method for preparing a dialkyl carbonate with high yield, thus improving economical efficiency. Moreover, the method of the present invention hardly produces any waste during the process and is thus an eco-friendly method. 1. A method for preparing dialkyl carbonate by reacting alkyl alcohol with urea or alkyl carbamate in the presence of: an ionic liquid comprising a cation capable of generating a hydrogen ion (H+) , and a hydrophobic anion containing fluorine , and a catalyst ,wherein said cation is a quaternary ammonium cation, an imidazolium cation, a pyridium cation, a pyrazolium cation, a pyrrolinium cation, a quaternary phosphonium cation, a thiazolium cation, or a sulfonium cation, and said hydrophobic anion is bis(trifluoromethylsulfonyl)imide, trifluoromethanesulfonate, or tris(trifluoromethylsulfonyl)methanide.2. The method for preparing dialkyl carbonate according to claim 1 , wherein the quaternary ammonium cation contains at least one substituent selected from the group consisting of a C1-C5 hydroxyalkyl group claim 1 , a C1-C5 alkoxy group claim 1 , and a C1-C5 alkyl group.3. The method for preparing dialkyl carbonate according to claim 2 , wherein the quaternary ammonium cation is a hydroxymethyltrimethylammonium cation claim 2 , a hydroxyethyltrimethylammonium cation claim 2 , a hydroxyethyltriethylammonium cation claim 2 , a ...

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Номер записи: 19
10-04-2014 дата публикации

METHOD OF PRODUCING PHTHALOYL DICHLORIDE COMPOUND, CATALYST FOR USE IN THE METHOD, AND METHOD OF FORMING THE CATALYST

Номер: US20140100389A1
Автор: HANAWA Takeshi, Ito Hiromichi, Kimura Yoshikazu, SUGIYAMA Toshimitsu, TAKAO Yoshihiro
Принадлежит:

A method of producing a phthaloyl dichloride compound, the method including: providing a compound represented by the following formula (1) and a compound represented by the following formula (2); and bringing the compound represented by the following formula (1) and the compound represented by the following formula (2) into reaction, so as to form a compound represented by the following formula (3), in the presence of at least one compound selected from a zirconium compound, a hafnium compound, and zinc oxide; 2. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the purity of the obtained compound represented by formula (2-3) is higher than 97%.3. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the purity of the obtained compound represented by formula (2-3) is 99% or more.4. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the purity of the obtained compound represented by formula (2-3) is in a range of from 98% to 99.7%.5. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the compound represented by formula (2-1) is phthalic anhydride.6. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the compound represented by formula (2-1) is 3-chlorophthalic anhydride or 4-chlorophthalic anhydride.7. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the compound represented by formula (2-2) is 1-chloro-4-(trichloromethyl)benzene.8. The method of producing a phthaloyl dichloride compound according to claim 1 , wherein the compound represented by formula (2-2) is (trichloromethyl)benzene. This application is a Divisional application of co-pending U.S. patent application Ser. No. 13/056,483, filed Jan. 28, 2011, which is the U.S. National Phase of PCT/JP2009/063362, filed Jul. 27, 2009. Priority is claimed thereto under 35 U.S.C. §120. This application also ...

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Номер записи: 20
07-01-2016 дата публикации

METHOD FOR PRODUCING DIARYL CARBONATE

Номер: US20160002143A1
Автор: DENECKER Gabriel, HALLENBERGER Kaspar, KAHNIS Henning, KÖHLER Karl-Heinz, KRÄMER Korbinian, Leiberich Ricarda, Lipski Florian, Vanden Eynde Johan
Принадлежит: BAYER MATERIALSCIENCE AG

The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates. 111.-. (canceled)12. A process for preparing diaryl carbonate by reaction of an aromatic hydroxyl compound and a halogenated carbonyl in the presence of a catalyst in a reactor , wherein the ratio G/A is less than 0.010 , where G is the entry volume flow rate of the liquid or dissolved halogenated carbonyl in m/s and A is the internal cross-sectional area orthogonal to the longitudinal axis in m.13. The process as claimed in claim 12 , wherein the reaction takes place in a bubble column reactor in the absence of a solvent.14. The process as claimed in claim 12 , wherein G/A is in the range from 0.0005 [m/s] and 0.0095 [m/s].15. The process as claimed in claim 12 , wherein the ratio H/D is greater than or equal to 2 and H is the height of the liquid phase in the reactor in the gas-free state and D is the diameter of the reactor.16. The process as claimed in claim 12 , wherein the residence time in the reactor is in the range from 0.5 to 4 hours claim 12 , the temperature is in the range from 120 to 220° C. and the pressure is 3 to 100 bar.17. The process as claimed in claim 12 , wherein the halogenated carbonyl is phosgene.18. The process as claimed in claim 12 , wherein the aromatic hydroxyl compound is phenol.19. The process as claimed in claim 12 , wherein the catalyst is pyridine claim 12 , pyridine*HCl claim 12 , TiCl claim 12 , Ti(OPh)or AlCl.20. The process as claimed in claim 12 , wherein the reactor is at least one bubble column reactor.21. The process as claimed in claim 12 , wherein the process is conducted in at least two stages.22. The process as claimed in claim 12 , wherein the phosgene content at the reactor outlet in the liquid phase is less than 100 ppm. The present application relates to a process ...

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Номер записи: 21
05-01-2017 дата публикации

METHOD FOR SYNTHESISING DIMETHYL CARBONATE

Номер: US20170001942A1
Автор: Lavoine-Hanneguelle Sophie, MARUEJOULS Christophe, MOULOUNGUI Zephirin
Принадлежит:

A method for synthesising dimethyl carbonate from methanol and urea, in which a saline ureic medium is used that includes at least one inorganic salt selected from the group made up of zinc (Zn) (II) chloride, tin (Sn) chlorides and iron (Fe) (III) chloride, characterised in that: methanol, in the presence of a catalytic composition, is placed in contact with the saline ureic medium that is at least partially liquid at a temperature referred to as synthesis temperature, which is higher than 140° C., such that reaction vapours are produced; the reaction vapours are condensed, and a condensate of the reaction vapours is collected, including dimethyl carbonate; the method is carried out at atmospheric pressure. A method for enriching and purifying dimethyl carbonate is also described. 118-. (canceled)19. Method for synthesizing dimethyl carbonate starting from methanol and urea , in which a saline ureic medium comprising at least one inorganic salt selected from the group consisting essentially of zinc chloride (Zn) II , tin chlorides (Sn) , and iron chloride (Fe) III is used: methanol, in the presence of a catalytic composition, is brought into contact with said saline ureic medium that is at least partially liquid at a temperature, so-called synthesis temperature, that is higher than 140° C., such that reaction vapors are produced;', 'the reaction vapors are condensed, and a condensate of said reaction vapors and that comprises dimethyl carbonate is recovered;', 'the method is implemented at atmospheric pressure., 'wherein20. Method according to claim 19 , wherein during a first operating step claim 19 , a reaction medium that comprises the saline ureic medium claim 19 , the catalytic composition claim 19 , and a first quantity of methanol is formed claim 19 , and the reaction medium is kept at the synthesis temperature claim 19 , with the formed condensate being reintroduced into the reaction medium claim 19 , and then during a second subsequent operating step claim ...

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Номер записи: 22
05-01-2017 дата публикации

Method for producing carbonates

Номер: US20170001943A1
Автор: John Joseph Anderson, Pankaj Singh Gautam, Sergio Ferrer Nadal, William E. Hollar, JR.
Принадлежит: SABIC Global Technologies BV

In an embodiment, a method of producing a carbonate comprises reacting carbon monoxide and chlorine in a phosgene reactor in the presence of a catalyst to produce a first product comprising phosgene; wherein carbon tetrachloride is present in the first product in an amount of 0 to 10 ppm by volume based on the total volume of phosgene; and reacting a monohydroxy compound with the phosgene to produce the carbonate; wherein the phosgene reactor comprises a tube, a shell, and a space located between the tube and the shell; wherein the tube comprises one or more of a mini-tube section and a second tube section; a first concentric tube concentrically located in the shell; a twisted tube; an internal scaffold; and an external scaffold.

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Номер записи: 23
05-01-2017 дата публикации

DIRECT SYNTHESIS OF BIO-BASED ALKYL & FURANIC DIOL ETHERS, ACETATES, ETHER-ACETATES, AND CARBONATES

Номер: US20170001971A1
Автор: Stensrud Kenneth, Venkitasubramanian Padmesh
Принадлежит:

A method of preparing a glycol mono-ether or mono-acetate, or carbonate involving either one of two pathways from alkylene glycols, HMF or its reduction derivative products (i.e., FDM, bHMTHFs), is provided. In particular, according to one pathway, the alkylene glycol, HMF or FDM, bHMTHFs are reacted with a dialkyl carbonate in the presence of a deprotonating agent, in substantial absence of an extrinsic catalyst, to produce an ether, and subsequently reacting the ether with an acid base. According to the other pathway, alkylene glycols are reacted with an acetate donor in the presence of an acid, base, to generate an alkylene monoacetate, and etherified with a carbonate in the presence of a deprotonating agent. 1. A method of preparing a mono-ether from a diol compound , comprising either a first pathway or second pathway , wherein:{'sup': 1', '1', '1', '2', '2', '2, 'sub': '3', 'in the first pathway, the diol compound is contacted with an Rorganic acid in the presence of a Brønsted acid at a temperature and for time sufficient to form a Rmono ester of the diol compound, then the Rmono ester of the diol compound is contacted with a Ralkyl diester of the formula R(CO)Rin the presence of a deprotonating agent at a temperature and for a time sufficient to form the monoester ether; or'}{'sup': 2', '2', '2', '1, 'in the second pathway, the diol compound is contacted with the an Ralkyl diester of the formula R(CO3)Rin the presence of a deprotonating agent at a temperature and for a time sufficient to form a mono ester of the diol compound, then the mono ester of the diol compound is contacted with an Rorganic acid in the presence of a Brønsted acid at a temperature and for time sufficient to form the monoester ether;'}{'sup': 1', '2, 'wherein Rand Rare the same or different alkyl, cyclo-alkyl or aromatic moieties.'}2. The method according to claim 1 , wherein the diol compound is at least one member selected from the group consisting of ethylene glycol (EG) claim 1 , ...

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Номер записи: 24
13-01-2022 дата публикации

Dialkyl carbonate production method

Номер: US20220009873A1
Автор: Hidefumi Harada, Hongyu Liu, Takehiko Isobe, Yousuke Shinkai
Принадлежит: Mitsubishi Gas Chemical Co Inc

Provided is a dialkyl carbonate production method that enables a dialkyl carbonate to be produced in a simple manner and in a short reaction time and enables easy processing of by-products. This dialkyl carbonate production method involves generation reaction of a carbonate ester through reaction between carbon dioxide and an alcohol represented by formula (1), wherein the generation reaction of a carbonate ester is performed in the presence of a carbodiimide compound represented by formula (2) (R1-R3 in the formula are as described in the description of the present application).[Chemical formula 1]R1—OH  (1)[Chemical formula 2]R2—N═C═N—R3  (2)

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Номер записи: 25
12-01-2017 дата публикации

Dialkyl Carbonates, Methods for Their Production and Use

Номер: US20170009173A1
Автор: Zhao Haibo
Принадлежит:

The present disclosure provides a dialkyl carbonate prepared from a methyl branched primary C-Calcohol. The dialkyl carbonate is prepared by transesterifying a reactant dialkyl carbonate with the methyl branched primary C-Calcohol under transesterification reaction conditions. The subsequently produced dialkyl carbonate may be used in various applications, including, but not limited to, in lubricating, cosmetic and textile products and applications. 2. The dialkyl carbonate of wherein Ris a methyl branched C-Calkyl group.3. The dialkyl carbonate of wherein Ris an alkyl group having 1 to 10 carbon atoms.4. The dialkyl carbonate of wherein Ris an alkyl group having 1 to 4 carbon atoms.5. The dialkyl carbonate of wherein Ris a methyl or ethyl group.6. The dialkyl carbonate of wherein Ris an aralkyl group having 6 to 10 carbon atoms.8. The process according to wherein Ris a lower alkyl group having 1 to 4 carbon atoms.9. The process according to wherein Ris methyl.13. The lubricant composition of further comprising at least one base oil.14. The lubricant composition of further comprising one or more additives comprising a dispersant claim 13 , a detergent claim 13 , a corrosion/rust inhibitor claim 13 , an antioxidant claim 13 , an anti-wear agent claim 13 , an anti-foamant claim 13 , a friction modifier claim 13 , a seal swell agent claim 13 , an emulsifiers claim 13 , a VI improver or a pour point depressant. The present disclosure is directed to dialkyl carbonates, methods for their production and their use in various applications, for example, in lubricating compositions.Because of their physical and chemical properties and performance characteristics, dialkyl carbonates have been used in various applications, such as in lubricant base fluids and as performance fluid components. Several methods for producing dialkyl carbonates have been generally described by Leslie Rudnick in “Synthetics, Mineral Oils, and Bio-Based Lubricants: Chemistry and Technology, Second ...

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Номер записи: 26
09-01-2020 дата публикации

METHOD FOR PREPARING DIALKYL DICARBONATES USING AMINE OXIDES

Номер: US20200010401A1
Автор: HOFMANN Christoph
Принадлежит: LANXESS DEUTSCHLAND GMBH

The present invention relates to a method for preparing dialkyl dicarbonates from the corresponding alkyl chloroformates using specific amine oxides as catalysts. 2. The method according to claim 1 , wherein Ris selected from the group of straight-chain or branched dodecanyl claim 1 , undecanyl claim 1 , tridecanyl claim 1 , tetradecanyl claim 1 , pentadecanyl claim 1 , hexadecanyl claim 1 , heptadecanyl claim 1 , octadecanyl claim 1 , nonadecanyl claim 1 , eicosanyl claim 1 , icosanyl claim 1 , heneicosanyl and dodoconyl.3. The method according to claim 1 , wherein Ris selected from the group of straight-chain or branched C- claim 1 , C claim 1 , C- claim 1 , C- claim 1 , C- claim 1 , C- claim 1 , C- claim 1 , C- claim 1 , and C-alkyl.4. The method according to claim 1 , wherein Rand Rare selected from the group of methyl claim 1 , ethyl claim 1 , n-propyl claim 1 , s-propyl claim 1 , n-butyl claim 1 , s-butyl claim 1 , isobutyl and t-butyl and Ris straight-chain or branched C-C-alkyl.5. The method according to claim 1 , wherein Rand Rare methyl and Ris C-C-alkyl.6. The method according to claim 1 , wherein Rand Rare methyl and Ris selected from the group of dodecanyl claim 1 , tetradecanyl claim 1 , and hexadecanyl.7. The method according to claim 1 , wherein Ris selected from the group of straight-chain or branched C- claim 1 , C- and C-alkyl and Rand Rare methyl and wherein the content of the compound where R=C-alkyl is from 60% by weight to 80% by weight and the content of the compound where R=C-alkyl is from 19% by weight to 30% by weight and the content of the compound where R=C-alkyl is from 1% by weight to 10% by weight claim 1 , based on the total weight of the compound of the formula (I).9. The method according to claim 8 , wherein Ris methyl claim 8 , ethyl claim 8 , n-propyl claim 8 , isopropyl claim 8 , or n-butyl or isobutyl.10. The method according to claim 1 , wherein the alkali metal hydroxides or alkaline earth metal hydroxides and/or carbonates ...

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Номер записи: 27
18-01-2018 дата публикации

Method for the Pervaporation and Vapor-Permeation Separation of Gas-Liquid Mixtures and Liquid Mixtures by SAPO-34 Molecular Sieve Membrane

Номер: US20180015420A1
Автор: CURULLA-FERRE Daniel, Sun Yuhan, Sun Zhiqiang, ZHANG Yanfeng
Принадлежит:

The present invention discloses a method for the pervaporation and vapor-permeation separation of a gas-liquid mixture or a liquid mixture by a SAPO-34 molecular sieve membrane, which comprises: 1) mixing an Al source, tetraethyl ammonium hydroxide, water, a Si source and a P source, and subjecting the resultant to hydrothermal crystallization, then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds; 2) coating the SAPO-34 molecular sieve seeds onto the inner surface of a porous support tube; 3) synthesis of a SAPO-34 molecular sieve membrane tube; 4) calcining the obtained SAPO-34 molecular sieve membrane tube to obtain a SAPO-34 molecular sieve membrane; 5) using the SAPO-34 molecular sieve membrane obtained from step 4) to perform separation of a gas-liquid mixture or a liquid mixture via a process of pervaporation separation or vapor-permeation separation. The invention has the advantages of very high methanol selectivity and permeation flux, and provides an efficient and energy-saving separation way via pervaporation or vapor-permeation separation. 1. A method for pervaporation separation of a gas-liquid mixture or a liquid mixture by preparing and using a SAPO-34 molecular sieve membrane , characterized in that the method comprises:1) mixing and dissolving an Al source, tetraethyl ammonium hydroxide TEAOH, water, a Si source and a P source to make a reaction liquor for seeds, which is then subjected to crystallization for 4-7 h by heating at 170-210° C., then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds;{'sub': 2', '3', '2', '5', '2', '2, 'wherein the molar ratio of the Al source, P source, Si source, tetraethylammonium hydroxide and all water in the reaction liquor for seeds is 1 AlO: 1-2 PO: 0.3-0.6 SiO: 1-3 TEAOH: 55-150 HO.'}2) coating the SAPO-34 molecular sieve seeds onto the internal surface of a porous support tube to get a porous support tube coated with SAPO-34 molecular sieve seeds;3) synthesizing a SAPO- ...

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Номер записи: 28
18-01-2018 дата публикации

Pervaporation and Vapor-Permeation Separation of Gas-Liquid Mixtures and Liquid Mistures by Ion Exchanged SAPO-34 Molecular Sieve Membrane

Номер: US20180015421A1
Автор: CURULLA-FERRE Daniel, Sun Yuhan, Sun Zhiqiang, ZHANG Yanfeng
Принадлежит:

The invention discloses a method for the pervaporation and vapor-permeation separation of a gas-liquid mixture/liquid mixture by an ion-exchanged SAPO-34 molecular sieve membrane, said method comprises the following steps: 1) synthesis of SAPO-34 molecular sieve seeds; 2) coating the SAPO-34 molecular sieve seeds onto the inner surface of a porous support; 3) synthesis of SAPO-34 molecular sieve membrane; 4) performing ion exchange and calcination; 5) using the ion-exchanged SAPO-34 molecular sieve membrane obtained in step 4) to perform the separation of a gas-liquid mixture or a liquid mixture by a process of pervaporation separation or vapor-permeation separation. The present method for membrane separation of methanol-dimethyl carbonate has advantages like low energy consumption, being not limited by azeotropic mixture, high methanol flux and high separation factors and thus has great economic value. 1. A method for the separation of a gas-liquid mixture or a liquid mixture by preparing and using an ion-exchanged SAPO-34 molecular sieve membrane , said method comprises the following steps:{'sub': 2', '3', '2', '5', '2', '2, '1) mixing and dissolving an Al source, tetraethyl ammonium hydroxide (TEAOH), water, a Si source and a P source to make reaction liquor for seeds, which is then subjected to crystallization for 4-7 h by heating at 170-210° C., then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds; wherein the molar ratio of the Al source, P source, Si source, tetraethylammonium hydroxide and all water in the reaction liquor for seeds is :1 AlO: 1-2 PO: 0.3-0.6 SiO: 1-3 TEAOH : 55-150 HO;'}2) coating the SAPO-34 molecular sieve seeds onto the inner surface of a porous support to get a porous support coated with SAPO-34 molecular sieve seeds; A. uniformly mixing an Al source, a P source, a Si source, tetraethylammonium hydroxide, di-n-propyl amine (DPA), water and a fluoride to form a mother liquor for SAPO-34 molecular sieve membrane ...

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Номер записи: 29
25-01-2018 дата публикации

Pervaporation and Vapor-Permeation Separation of Gas-Liquid Mixtures and Liquid Mistures by SAPO-34 Molecular Sieve Membrane Prepared in Dry-Gel Process

Номер: US20180021728A1
Автор: CURULLA-FERRE Daniel, Sun Yuhan, Sun Zhiqiang, ZHANG Yanfeng
Принадлежит: Shanghai Advanced Research Institute, Chinese Academy of Sciences

The invention discloses a method for the pervaporation and vapor-permeation separation of a gas-liquid mixture or a liquid mixture by a SAPO-34 molecular sieve membrane prepared in a dry gel process, comprising: 1) synthesis of SAPO-34 molecular sieve seeds; 2) coating the SAPO-34 seeds on a porous support; 3) preparation of a mother liquor for dry gel synthesis of SAPO-34 molecular sieve membrane; 4) supporting the mother liquor for dry gel synthesis on the porous support coated with SAPO molecular sieve seeds and drying; 5) placing the porous support prepared in step 4) into a reaction vessel, adding a solvent, performing crystallization of the dry gel; 6) calcining; 7) using the SAPO-34 molecular sieve membrane obtained from step 6) to perform separation of a gas-liquid mixture or a liquid mixture by a process of pervaporation separation or vapor-permeation separation. The invention has the advantages of very high methanol selectivity and permeation flux, lowering synthesis cost of molecular sieve membrane and lowering environment pollution. 1. A method for the pervaporation or vapor-permeation separation of a gas-liquid mixture or a liquid mixture by a SAPO-34 molecular sieve membrane prepared in a dry gel process , characterized in that the method comprises the following steps;1) mixing and dissolving an Al source, tetraethylammonium hydroxide (TEAOH), water, a Si source and a P source to make a reaction liquor for seeds, which is then subjected to crystallization for 2-72 h by heating at 120-230 ±C, then centrifuging, washing and drying to get SAPO-34 molecular sieve seeds;{'sub': 2', '3', '2', '5', '2', '2, 'wherein the molar ratio of the Al source, P source, Si source, tetraethylammonium hydroxide and all water in the reaction liquor for seeds is 1 AlO: 1-2 PO: 0.3-0.6 SiO: 1-3 TEAOH: 55-150 HO;'}2) coating the SAPO-34 molecular sieve seeds on a porous ceramic support;3) uniformly mixing an Al source, a P source, a Si source, tetraethyl ammonium hydroxide ( ...

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Номер записи: 30
17-04-2014 дата публикации

METHODS FOR PRODUCING EPOXIDATION CATALYSTS AND EPOXIDATION METHODS UTILIZING THEM

Номер: US20140107356A1
Автор: Basrur Arun G., Gopal Srikant, Murthy Lakshmi N. Vutukuru
Принадлежит: DOW TECHNOLOGY INVESTMENTS, LLC

A method for producing epoxidation catalysts is provided. The catalyst comprises a support, a catalytic species, maganese and at least one alkali metal and/or promoter. The catalytic species may be silver. The catalyst is prepared by a method wherein at least a portion of the manganese is impregnated in a step separate from the at least one alkali metal and/or promoter. Advantageously, catalysts produced by the present method may exhibit greater efficiencies than catalysts produced by conventional methods. A method for the epoxidation of alkylenes using the catalysts so produced is provided as is a method for using the alkylene oxides for the production of 1,2-diols, 1,2-carbonates, 1,2-diol ethers, or alka-nolamines. 1. A method for making an epoxidation catalyst comprising a support , at least one catalytic species , manganese and at least one alkali metal and/or promoter , comprising:Impregnating at least a portion of the manganese in an impregnation step separate from the at least one alkali metal and/or promoter.2. The method of claim 1 , wherein the manganese is impregnated with the at least one catalytic species.3. The method of claim 1 , wherein the at least one alkali metal and/or promoter comprises sodium claim 1 , cesium claim 1 , lithium claim 1 , sulfate or combinations of these.4. The method of claim 1 , wherein the at least one alkali metal and/or promoter comprises sodium and is impregnated in a step separate from the manganese.5. The method of claim 1 , wherein the manganese comprises Mn-EDTA complex.6. The method of claim 1 , wherein the at least one alkali metal and/or promoter comprises rhenium.7. The method of claim 1 , wherein the catalytic species comprises silver.8. An epoxidation catalyst prepared according to the method of .9. A method for the epoxidation of one or more alkylenes comprising contacting an oxygen source and an alkylene in the presence of an epoxidation catalyst prepared according to the method of .10. The method of claim 8 , ...

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Номер записи: 31
29-01-2015 дата публикации

Modulators of atp-binding cassette transporters

Номер: US20150031722A1
Автор: Anna Hazlewood, Ashvani Singh, Fredrick Van Goor, Jason Mccartney, Jinglan Zhou, Peter Grootenhuis, Sara Hadida-Ruah
Принадлежит: Vertex Pharmaceuticals Inc

The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.

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Номер записи: 32
05-02-2015 дата публикации

MOLECULAR GLASS PHOTORESISTS CONTAINING BISPHENOL A FRAMEWORK AND METHOD FOR PREPARING THE SAME AND USE THEREOF

Номер: US20150037735A1
Автор: Chen Li, Li Shayu, Wang Shuangqing, Xu Jian, YANG Guoqiang
Принадлежит: Institute of Chemistry, Chinese Academy of Sciences

The present invention provides a class of molecular glass photoresist (I and II) comprising bisphenol A as a main structure and their preparation. The molecular glass photoresist is formulated with a photoacid generator, a cross-linking agent, a photoresist solvent, and other additives into a positive or negative photoresist. A photoresist with a uniform thickness is formed on a silicon wafer by spin-coating. The photoresist formulation can be used in modern lithography, such as 248 nm photolithography, 193 nm photolithography, extreme-ultraviolet (EUV) lithography, nanoimprint lithography, electron beam lithography, and particularly in the EUV-lithography technique. 4. The use of the compound of claim 1 , wherein the compound with unprotected phenolic hydroxyl groups can be used as a negative photoresist; the compound with fully protected phenolic hydroxyl groups can be used as a positive photoresist; partially protected phenolic hydroxyl groups can be used as a positive or negative photoresist.5. A negative photoresist composition includes the compound of the general formula (I) or (II) of with unprotected or partially protected phenolic hydroxyl groups used as a negative photoresist claim 1 , a photoacid generator claim 1 , a cross-linking agent claim 1 , and a photoresist solvent.6. The negative photoresist composition of claim 5 , wherein the compound of the general formula (I) or (II) is present in an amount ranging from 0.1 to 10 wt. % claim 5 , a cross-linking agent from 0.01 to 1 wt. % claim 5 , and a photoacid generator from 0.01 to 1 wt. %.7. A positive photoresist composition includes the compound of the general formula (I) or (II) of with fully protected phenolic hydroxyl groups used as a positive photoresist claim 1 , a photoacid generator claim 1 , and a photoresist solvent claim 1 , preferably including the compound of the general formula (I) or (II) in an amount ranging from 1 to 10 wt. % claim 1 , and a photoacid generator in an amount ranging from ...

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Номер записи: 33
26-02-2015 дата публикации

PROCESS FOR THE PRODUCTION OF CHEMICAL COMPOUNDS FROM CARBON DIOXIDE

Номер: US20150057458A1
Автор: Bogild Hansen John, Friis Pedersen Claus, SCHJØDT Niels Christian
Принадлежит: Haldor Topsoe A/S

Process for the production of a chemical compound from a carbon dioxide starting material, comprising the steps of a) providing a feed stream consisting mainly of carbon dioxide; b) electrolysing in an electrolysis stage the carbon dioxide in the feed stream to a first gas stream containing carbon monoxide and a second gas stream containing oxygen, wherein the molar ratio between carbon monoxide and oxygen is about 1:0.5 in an electrolysis stage; c) adjusting the composition of the first gas stream or the second gas stream or both gas streams to include carbon dioxide, either by operating at less than full conversion of CO2 or by sweeping one or both gas streams with a gas containing COor by at some stage between the electrolysis cell and the oxidative carbonylation reactor diluting one or both gas streams with a gas containing CO2; all while maintaining an overall molar ratio of carbon monoxide to oxygen of about 1:0.5; and d) introducing the first and second process stream into a reaction stage and reacting the first and second process stream combined or in succession with a substrate to the chemical compound by means of an oxidative carbonylation reaction with the carbon monoxide and oxygen contained in the process feed stream. 1. Process for the production of a chemical compound from a carbon dioxide comprising starting material , comprising the steps ofa) providing a feed stream comprising carbon dioxide;b) electrolysing in an electrolysis stage at least a part of the amount of the carbon dioxide in the feed stream to a first gas stream containing carbon monoxide and a second gas stream containing oxygen, wherein the molar ratio between carbon monoxide and oxygen is about 1:0.5;c) introducing carbon dioxide into the first and/or the second gas stream either by maintaining a degree of conversion of carbon dioxide in the electrolysis stage of less than 100% and/or sweeping either the first or the second gas stream or both gas streams with a sweep gas containing ...

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Номер записи: 34
03-03-2016 дата публикации

PHENOL DERIVATIVE AND PREPARATION METHOD AND USE IN MEDICINE THEREOF

Номер: US20160060197A1
Автор: LI Fangqiong, Liu Guoliang, LIU Jianyu, LUO Huadong, LUO Xinfeng, QIN Linlin, REN LEI, Tang Peng Cho, WAN Songlin, Wei Yonggang, YI Shixu
Принадлежит: Sichuan Haisco Pharmaceutical Co., Ltd.

The present invention relates to a phenol derivative and the preparation method and use in medicine thereof, and particular to a phenol derivative represented by general formula (A) or a stereoisomer, a solvate, a metabolite, a prodrug, a pharmaceutically acceptable salt or a cocrystal thereof, a preparation method thereof, a pharmaceutical composition comprising the same, and use of the compound or composition of the present invention in the field of the central nervous system; wherein the definitions of substituents in general formula (A) are the same as those in the Description. 19. The compound according to claim 1 , or a stereoisomer claim 1 , a solvate claim 1 , a metabolite claim 1 , a prodrug claim 1 , a pharmaceutically acceptable salt claim 1 , or a cocrystal thereof claim 1 ,wherein the salt includes an ammonium salt, a potassium salt, a sodium salt, a calcium salt, a magnesium salt, a tetramethylammonium salt, a tetraethylammonium salt, a tetrapropylammonium salt, a tetrabutylammonium salt, a tetra(isopentyl)ammonium salt, an ethanolamine salt, a diethanolamine salt, a triethanolamine salt, trimethylamine salt, N-methylglucosamine salt, hydrochloride sulfate, phosphate, acetate, trifluoroacetate, fumarate, hemifumarate, maleate, malate, citrate, succinate, benzenesulfonate, or p-toluenesulfonate.22. A pharmaceutical composition claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a compound according to , or a stereoisomer, a solvate, a metabolite, a pharmaceutically acceptable salt, a cocrystal, or a prodrug thereof; and'}one or more pharmaceutically acceptable vehicles and/or excipients.23. Use of the compound according to claim 1 , or a stereoisomer claim 1 , a solvate claim 1 , a metabolite claim 1 , a pharmaceutically acceptable salt claim 1 , a cocrystal claim 1 , or a prodrug thereof claim 1 , for the manufacture of a medicament forinducing and maintaining anesthesia in an animal or a human,facilitating sedation and hypnosis of ...

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Номер записи: 35
01-03-2018 дата публикации

Synthetic route to anti-viral agents

Номер: US20180057482A1
Автор: David R. Hill, Dennie S. Welch, Gang Zhao, Jeff M. Kallemeyn, Jianzhang Mei, Kenneth M. Engstrom, Kirill A. Lukin, Marvin R. Leanna, Matthew J. Pelc, Matthew M. Ravn, Michael J. Abrahamson, Richard D. Bishop, Russell D. Cink, Timothy B. Towne, Westin H. Morrill
Принадлежит: AbbVie Inc

The invention provides methods of synthesizing a viral protease inhibitor in high yield, without using expensive catalysts or challenging reaction conditions.

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Номер записи: 36
02-03-2017 дата публикации

Process for Producing Dimethyl Carbonate

Номер: US20170057904A1
Автор: Han Hui, Li Zhijian, Wang Xunwen, Wang Youqi
Принадлежит:

The present disclosure provides a process for producing dimethyl carbonate with high conversion rate. Alkylene glycol reacts with urea via alcohylysis reaction to produce alkylene carbonate and ammonia. The alkylene carbonate produced reacts with methanol via transesterification reaction to produce dimethyl carbonate. Before the dimethyl carbonate is separated from the mixture, the nitrogen-containing impurities are substantially removed. Unreacted feedstock and catalysts are recycled in the process. 1) A process for producing dimethyl carbonate comprising the steps of:(a) reacting alkylene glycol and urea in the presence of an alcoholysis catalyst to produce alkylene carbonate and ammonia;(b) recovering at least a portion of the alkylene carbonate produced in step (a) from an effluent from step (a);(c) reacting the alkylene carbonate recovered from step (b) and methanol in the presence of an transesterification catalyst to produce dimethyl carbonate and alkylene glycol;(d) recovering a mixture comprising the dimethyl carbonate and unreacted methanol; and(e) separating the dimethyl carbonate from the mixture,wherein nitrogen-containing impurities are substantially removed in one or more steps of the process such that the mixture in separation step (e) is substantially free of nitrogen-containing impurities.2) The process of claim 1 , wherein the nitrogen-containing impurities are substantially removed from the alkylene carbonate in recovery step (b).3) The process of claim 1 , wherein the nitrogen-containing impurities are substantially removed from the mixture in reaction step (c).4) The process of claim 1 , wherein the first portion of unreacted methanol is separated from the mixture and reused in step (c).5) The process of claim 4 , wherein the nitrogen-containing impurities are substantially removed from the first portion of unreacted methanol separated.6) The process of claim 4 , wherein the first portion of unreacted methanol is separated via a pressure ...

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Номер записи: 37
04-03-2021 дата публикации

METHOD FOR PRODUCING CARBONIC ESTER

Номер: US20210061749A1
Автор: Harada Hidefumi, Isobe Takehiko, Liu Hongyu, Shinkai Yousuke, UMEZU Ryotaro
Принадлежит: MITSUBISHI GAS CHEMICAL COMPANY, INC.

To achieve a method for producing a carbonic ester at a high yield by a simple process while suppressing formation of by-products, for example, a method for producing an aliphatic carbonic ester. The above problem is solved by a method for producing a carbonic ester, the method including a carbonic ester formation reaction in which an alcohol and carbon dioxide are reacted in the presence of an aromatic nitrile compound and a catalyst, wherein the water content in the alcohol used in the carbonic ester formation reaction is 0.10% by mass or less. 1. A method for producing a carbonate ester , the method comprising a carbonate ester generation reaction of reacting an alcohol and carbon dioxide with each other under the presence of an aromatic nitrile compound and a catalyst ,wherein a water content of the alcohol which is used for the carbonate ester generation reaction is 0.10% by mass or less.2. The method for producing a carbonate ester according to claim 1 , wherein a pressure in the carbonate ester generation reaction is 0.6 MPa or higher.3. The method for producing a carbonate ester according to claim 1 , wherein a reaction temperature in the carbonate ester generation reaction is 110° C. or higher and 160° C. or lower.4. The method for producing a carbonate ester according to claim 1 , wherein a molar ratio of the aromatic nitrile compound and the alcohol is aromatic nitrile compound:alcohol=1:1 to 1:10.5. The method for producing a carbonate ester according to claim 1 , wherein a molar ratio of the catalyst claim 1 , the aromatic nitrile compound and the alcohol is catalyst:aromatic nitrile compound:alcohol=1:100:200 to 0.5:100:600.6. The method for producing a carbonate ester according to claim 1 , wherein the aromatic nitrile compound comprises 2-cyanopyridine.7. The method for producing a carbonate ester according to claim 1 , wherein the catalyst contains CeO.8. The method for producing a carbonate ester according to claim 1 , wherein the alcohol comprises ...

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Номер записи: 38
05-03-2015 дата публикации

Modulators of atp-binding cassette transporters

Номер: US20150065487A1
Автор: Anna Hazlewood, Ashvani Singh, Fred Van Goor, Jason Mccartney, Jinglan Zhou, Peter Grootenhuis, Sara Hadida-Ruah
Принадлежит: Vertex Pharmaceuticals Inc

The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.

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Номер записи: 39
05-03-2015 дата публикации

Method of Preparing Prepolymer Particle

Номер: US20150065681A1
Автор: BAE Gook Geon, IM Sang Kyun, JUN Suk Min, KIM Jin Kyu, KWON So Young, LEE Ki Yon
Принадлежит:

Disclosed herein is a method of preparing prepolymer particles. The method includes injecting a prepolymer in a solution state by bottom-up type injection to form prepolymer particles by removing a solvent from the prepolymer in a solution state. The method can prepare prepolymer particles, which can be used in solid-state polymerization, using a bottom-up type flash process. 1. A method of preparing prepolymer particles , comprising injecting a prepolymer in a solution state by bottom-up type injection to form prepolymer particles by removing a solvent from the prepolymer in a solution state.2. The method according to claim 1 , wherein the prepolymer in a solution state is injected by bottom-up type injection under conditions of about 200° C. to about 300° C. and about 10 bar to about 40 bar through a bottom nozzle provided to a flash reactor under conditions of about 15° C. to about 30° C. and about 0 bar to about 3 bar.3. The method according to claim 1 , wherein the prepolymer in a solution state has an intrinsic viscosity from about 0.05 dL/g to about 0.2 dL/g.4. The method according to claim 1 , wherein the prepolymer in a solution state is injected at an injection rate from about 10 m/sec to about 70 m/sec.5. The method according to claim 1 , wherein the flash reactor has a height from about 3 m to about 30 m and a volume from about 1 mto about 20 m.6. The method according to claim 1 , wherein the prepolymer particle has an intrinsic viscosity from about 0.05 dL/g to about 0.2 dL/g claim 1 , and a weight average molecular weight from about 500 g/mol to about 3 claim 1 ,000 g/mol.7. A prepolymer particle prepared by the method of preparing prepolymer particles according to .8. A flash reactor comprising a bottom nozzle for injecting a prepolymer in a solution state by bottom-up type injection.9. The flash reactor according to claim 8 , wherein the flash reactor has a height from about 3 m to about 30 m and a volume from about 1 mto about 20 m.10. The flash ...

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Номер записи: 40
05-03-2015 дата публикации

METHOD OF MAKING A TEMPLATING AGENT

Номер: US20150065718A1
Автор: BRYAN Richard Charles
Принадлежит:

A method for preparing 1-adamantyltrimethylammonium methylcarbonate or N,N-dimethyl-3,5-dimethylpiperidinium methylcarbonate is disclosed. The method comprises reacting dimethyl carbonate and 3,5-dimethylpiperidine or a 1-adamantylamine compound and in the presence of water in a sealed vessel at a temperature of from 80 to 200° C. The 1-adamantylamine compound is 1-adamantylamine, 1-adamantylmethylamine, or mixtures thereof. 1. A method for preparing 1-adamantyltrimethylammonium methylcarbonate or N ,N-dimethyl-3 ,5-dimethylpiperidinium methylcarbonate , comprising reacting dimethyl carbonate and 3 ,5-dimethylpiperidine or a 1-adamantylamine compound in the presence of water in a sealed vessel at a temperature of from 80 to 200° C. , wherein the 1-adamantylamine compound is selected from the group consisting of 1-adamantylamine , 1-adamantylmethylamine , and mixtures thereof.2. The method of wherein the molar ratio of dimethyl carbonate : the 1-adamantylamine compound or 3 claim 1 ,5-dimethylpiperidine is in the range of 5 to 20.3. The method of wherein the molar ratio of dimethyl carbonate: the 1-adamantylamine compound or 3 claim 1 ,5-dimethylpiperidine is in the range of 8 to 14.4. The method of wherein the molar ratio of water: the 1-adamantylamine compound or 3 claim 1 ,5-dimethylpiperidine is in the range of 1 to 4.5. The method of wherein the reaction of the 1-adamantylamine compound or 3 claim 1 ,5-dimethylpiperidine with dimethyl carbonate is performed at a temperature in the range of 120-160° C.6. The method of wherein the 1-adamantylamine compound is 1-adamantylamine.7. The method of further comprising reacting the 1-adamantyltrimethylammon ium methylcarbonate or N claim 1 ,N-dimethyl-3 claim 1 ,5-dimethylpiperidinium methylcarbonate with calcium hydroxide in the presence of a water to produce 1-adamantyltrimethylammonium hydroxide.8. The method of wherein the molar ratio of calcium hydroxide: 1-adamantyltrimethylammonium methylcarbonate or N claim 7 ,N- ...

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Номер записи: 41
05-03-2015 дата публикации

METHOD FOR PRODUCING NITROUS ACID ESTER, AND METHOD FOR PRODUCING DIALKYL OXALATE AND DIALKYL CARBONATE

Номер: US20150065742A1
Автор: Fukui Yuya, HINO Akira, II Hirofumi, TANAKA SYUJI, UEDA Satoshi
Принадлежит:

A method for producing nitrous acid ester in which nitric oxide, oxygen, and an alcohol are reacted, thereby generating nitrous acid ester includes a step of generating nitrous acid ester by supplying a bottom liquid from a bottom part of the reaction column, and nitric oxide and/or carbon monoxide, a step of supplying nitrous acid ester to the reaction column; a step of supplying a reaction liquid containing water, nitric acid, and the alcohol to a nitric acid condensing column from the reactor; and a step of separating a low-boiling point component by distillation from the reaction liquid under control of a concentration of the alcohol in a condensed liquid being generated at a bottom part of the nitric acid condensing column to be less than 4.0% by weight so as to introduce the condensed liquid into the reactor from the nitric acid condensing column. 1. A method for producing nitrous acid ester in which an alcohol is supplied to an upper part of a reaction column for producing nitrous acid ester , is made to flow downward from the upper part to a lower part of the reaction column , nitric oxide and oxygen , or a gas mixture thereof is supplied to the lower part of the reaction column , and nitric oxide , oxygen , and the alcohol are reacted , thereby generating nitrous acid ester , the method comprising:a step of extracting a bottom liquid containing water, nitric acid, and an alcohol from the bottom part of the reaction column so as to supply the bottom liquid to a reactor, and supplying nitric oxide and/or carbon monoxide to the reactor;a step of generating nitrous acid ester by brining nitric oxide and/or carbon monoxide into contact with the bottom liquid in the reactor;a step of supplying nitrous acid ester obtained in the reactor to the reaction column;a step of supplying a reaction liquid containing water, nitric acid, and the alcohol to a nitric acid condensing column from a lower part of the reactor; anda step of separating a low-boiling point component ...

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Номер записи: 42
28-02-2019 дата публикации

METHOD FOR SEPARATING DIMETHYL CARBONATE FROM METHANOL

Номер: US20190062259A1
Автор: Fei Taikang, Ge Junwei, He Wenjun, LI JUN, Wang Jiahua, YANG Weimin
Принадлежит:

A method for separating dimethyl carbonate from methanol includes subjecting a raw material containing dimethyl carbonate and methanol to extractive distillation, wherein an extractant comprising a compound having a general formula of CHO(CHCHO)CH, n being an integer of 2-8, is used in the extractive distillation. The method has the advantages of good separation effect, high product purity, and environmental friendly. 1. A method for separating dimethyl carbonate from methanol , comprising:{'sub': 3', '2', '2', 'n', '3, 'subjecting a raw material containing dimethyl carbonate and methanol to extractive distillation, wherein an extractant comprising at least one compound having a general formula of CHO(CHCHO)CH, n being an integer of 2-8, is used in the extractive distillation.'}2. The method according to claim 1 , wherein the extractant comprises diethylene glycol dimethyl ether claim 1 , triethylene glycol dimethyl ether claim 1 , tetraethylene glycol dimethyl ether claim 1 , pentaethylene glycol dimethyl ether claim 1 , hexaethylene glycol dimethyl ether claim 1 , heptaethylene glycol dimethyl ether claim 1 , octaethylene glycol dimethyl ether or a mixture thereof.3. The method according to claim 1 , wherein the extractant is comprised of diethylene glycol dimethyl ether claim 1 , triethylene glycol dimethyl ether claim 1 , tetraethylene glycol dimethyl ether claim 1 , or a mixture of diethylene glycol dimethyl ether claim 1 , triethylene glycol dimethyl ether claim 1 , and tetraethylene glycol dimethyl ether claim 1 , and preferably claim 1 , the mixture is comprised of 10-40 wt % of diethylene glycol dimethyl ether claim 1 , 20-60 wt % of triethylene glycol dimethyl ether claim 1 , and 10-40 wt % of tetraethylene glycol dimethyl ether.4. The method according to claim 2 , wherein the mixture is a polyethylene glycol dimethyl ether claim 2 , preferably the polyethylene glycol dimethyl ether comprises triethylene glycol dimethyl ether claim 2 , tetraethylene glycol ...

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Номер записи: 43
17-03-2022 дата публикации

Process for preparation of 2-amino-5-hydroxy propiophenone

Номер: US20220081388A1
Автор: Jagadeeswara Rao Dadi, Raj Koti Katkuri, Sridhar Tummu, Uma Maheswer Rao Vasirredi, Venkata Ramana Kintali
Принадлежит: Laurus Labs Pvt Ltd

The present invention relates to a process for preparation of 2-Amino-5-hydroxy propiophenone, a key intermediate for the synthesis of camptothecin analogs including 7-Ethyl-10-hydroxycamptothecin (SN-38).

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Номер записи: 44
15-03-2018 дата публикации

PROCESS FOR THE PRODUCTION OF HIGH VOLTAGE ELECTROLYTE SOLVENTS FOR LI-ION BATTERIES

Номер: US20180072650A1
Автор: DZWINIEL Trevor L., KRUMDICK Gregory K., PUPEK Krzysztof
Принадлежит: UCHICAGO ARGONNE, LLC

A method for producing halogenated carbonates is provided, the method having the steps of reacting a halogenated hydroxyl moiety with an alkyl formate in the presence of a liquid solvent and a solid base. An exemplary halogenated carbonate so produced is trifluoroethyl methyl carbonate. 1. A method for producing halogenated carbonates , the method comprising:reacting a halogenated hydroxyl moiety with an alkyl chloroformate in the presence of a liquid solvent and a non-amine, solid base such that the solid base exists at the beginning of the reaction, during the reaction and after the carbonates are produced.2. The method as recited in wherein the halogenated hydroxyl moiety comprises fluorine and alcohol.3. The method as recited in wherein the liquid solvent is a nonhalogenated compound selected from the group consisting of acetone claim 1 , diethyl ketone claim 1 , ethyl methyl ketone claim 1 , acetophenone claim 1 , cyclohexyl methyl ketone and combinations thereof.4. The method as recited in wherein the solid base is an inorganic compound selected from the group consisting of alkali carbonate claim 1 , alkaline earth carbonate claim 1 , alkali phosphate claim 1 , alkaline earth phosphate claim 1 , and combinations thereof.5. The method as recited in wherein the reaction occurs in ambient atmosphere.6. The method as recited in wherein the halogenated carbonates are produced in about 1 to about 4 hours after a single filtration step which requires no aqueous wash.7. The method as recited in wherein the halogenated carbonates are produced at temperatures between about −10° C. and about 20° C.8. The method as recited in wherein the halogenated carbonate is trifluoroethyl methyl carbonate.9. The method as recited in wherein the solvent is acetone and the base is potassium carbonate.10. The method as recited in wherein the halogenated hydroxyl moiety is trifluoroethanol.11. The method as recited in wherein the halogenated carbonates are produced having greater than 99 ...

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Номер записи: 45
16-03-2017 дата публикации

METHOD FOR PRODUCING DIARYL CARBONATES

Номер: US20170073299A1
Автор: DENECKER Gabriel, HALLENBERGER Kaspar, KAHNIS Henning, KÖHLER Karl-Heinz, KRÄMER Korbinian, Leiberich Ricarda, Lipski Florian, Somhom Weerachanan, Vanden Eynde Johan
Принадлежит:

The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of an optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of crystallization and recovered. 1. A process for preparing diaryl carbonate comprising:a) reacting a monophenol with phosgene and/or at least one aryl chloroformate in the presence of at least one optionally substituted pyridine, in free form and/or in the form of a hydrochloride salt thereof, as catalyst, wherein the reaction is carried out in a reactor under pressures of 1-50 bar,b) transferring the reaction mixture from the reactor into an apparatus configured for suspension crystallization,c) lowering the temperature in the apparatus, thereby introducing the suspension crystallization and forming a crystallizate,d) separating the crystallizate from the remaining catalyst-containing mother liquor, ande) at least partially recirculating the catalyst-containing mother liquor into the reactor at step a).2. The process as claimed in claim 1 , wherein the monophenol comprises phenol.3. The process as claimed in claim 1 , wherein not more than 10 mol % of the optionally substituted pyridine is present in free form.4. The process as claimed in claim 3 , wherein the catalyst comprises pyridine hydrochloride.5. The process as claimed in claim 1 , wherein an aqueous solution is not used in any of the steps a) to e).6. The process as claimed in wherein hydrogen chloride formed in step a) is not neutralized.7. The process as claimed in claim 1 , wherein hydrogen chloride formed in step a) is separated off by distillation.8. The process as claimed in claim 1 , wherein the ratio of monophenol to diaryl carbonate is set before step c) by a thermal ...

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Номер записи: 46
16-03-2017 дата публикации

METHOD FOR PRODUCING DIARYL CARBONATES

Номер: US20170073300A1
Автор: DENECKER Gabriel, HALLENBERGER Kaspar, KAHNIS Henning, KÖHLER Karl-Heinz, KRÄMER Korbinian, Leiberich Ricarda, Lipski Florian, Somhom Weerachanan, Vanden Eynde Johan
Принадлежит:

The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of at least one optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of distillation and recovered. 1. A process for preparing diaryl carbonate comprising:a. reacting at least one monophenol with phosgene and/or at least one aryl chloroformate in the presence of at least one optionally substituted pyridine, in free form and/or in the form of a hydrochloride salt thereof, as catalyst, wherein the reaction is carried out in a reactor under pressures of 1-50 bar (absolute),b. transferring the reaction mixture from the reactor into a single-stage distillation apparatus or a multistage distillation apparatus,c. separating a catalyst-containing distillate off at the top of at least one distillation column,d. at least partially recirculating the catalyst-containing distillate into the reactor at step a), ande. separating diaryl carbonate off via a side stream from the distillation apparatus.2. The process as claimed in claim 1 , wherein the at least one monophenol comprises phenol.3. The process as claimed in claim 1 , wherein not more than 10 mol % of the optionally substituted pyridine is present in free form.4. The process as claimed in claim 3 , wherein the catalyst comprises pyridine hydrochloride.5. The process as claimed in claim 1 , wherein an aqueous solution is not used in any of the steps a) to e).6. The process as claimed in claim 1 , wherein the hydrogen chloride formed in step a) is not neutralized.7. The process as claimed in claim 1 , wherein hydrogen chloride formed in step a) is separated off by distillation in a first distillation stage and the catalyst-containing distillate and the ...

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Номер записи: 47
05-03-2020 дата публикации

Method of producing a diaryl carbonate

Номер: US20200071255A1
Автор: Samir Anapat
Принадлежит: SABIC Global Technologies BV

A method of producing a diaryl carbonate, comprising: performing both a transesterification reaction and a disproportionation reaction within a reactive distillation column by introducing a feed stream comprising a dialkyl carbonate to the reactive distillation column at a point above a reboiler, and introducing an aromatic hydroxyl compound to the reactive distillation column; producing a diaryl carbonate, within the reactive distillation column; and withdrawing a bottom product stream comprising the diaryl carbonate from the reactive distillation column, preferably the diaryl carbonate has a purity of greater than or equal to 99.97 wt %.

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Номер записи: 48
05-06-2014 дата публикации

Modulators of atp-binding cassette transporters

Номер: US20140155431A1
Автор: Anna Hazlewood, Ashvani Singh, Fredrick Van Goor, Jason Mccartney, Jinglan Zhou, Peter Grootenhuis, Sara Hadida-Ruah
Принадлежит: Vertex Pharmaceuticals Inc

The present invention relates to modulators of ATP-Binding Cassette (“ABC”) transporters or fragments thereof, including Cystic Fibrosis Transmembrane Conductance Regulator, compositions thereof, and methods therewith. The present invention also relates to methods of treating ABC transporter mediated diseases using such modulators.

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Номер записи: 49
22-03-2018 дата публикации

NOVEL CONFIGURATION AND ITS USE IN PROCESS FOR SYNTHESIS OF ALKYL CARBAMATES FROM ALKYL ALCOHOL AND UREA IN A TUBULAR REACTOR

Номер: US20180079714A1
Автор: KELKAR Ashutosh Anant, KINAGE Anil Kisan, MOTE Dhananjay Ravindra, RANADE Vivek Vinayak, RANE Vilas Hari, ROY Lalita Sanjib, SHINGOTE Savita Kiran
Принадлежит:

The present invention discloses an improved catalyst free process for synthesis of alkyl carbamates in an integrated system comprising a tubular reactor and a striper. The process comprises reacting urea and an alcohol in said tubular reactor under autogeneous pressure; wherein said process provides >90% selectivity towards alkyl carbamate. The mixture of urea and alcohol is N fed to the tubular reactor at a particular feed rate. The tubular reactor is heated externally under autogeneous pressure to carry out a synthesis reaction producing alkyl carbamate and ammonia. The ammonia is removed from the tubular reactor by the striper. The tubular reactor and the stripper are arranged in series to reduce the equilibrium limitations of the reaction and drive the reaction in forward direction. 1. A catalyst free process for synthesis of alkyl carbamate within an integrated system of at least one tubular reactor and a stripper in series , comprising reacting urea and an alcohol in said tubular reactor under autogeneous pressure; wherein said process provides >90% selectivity towards alkyl carbamate.2. The catalyst free process according to claim 1 , wherein the alcohol is selected from methanol claim 1 , ethanol claim 1 , 1-propanol claim 1 , 2-propanol claim 1 , 1-butanol claim 1 , 2-butanol claim 1 , tert-butanol claim 1 , pentanol and its isomers claim 1 , hexanol and its isomers claim 1 , their higher homologues or their isomers.3. The catalyst free process according to claim 1 , wherein the temperature of the reaction mixture is in the range of 150-250 C.4. The catalyst free process according to claim 1 , wherein urea and alcohol in mole ratio 10 to 50 are fed in to the tubular reactor at a feed rate of 5-25 ml/min.5. The catalyst free process according to claim 1 , wherein said process can be carried out continuously claim 1 , semi continuously or batch wise.6. The catalyst free process according to claim 1 , wherein the process further comprises reacting said alkyl ...

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Номер записи: 50
22-03-2018 дата публикации

PROCESS FOR PREPARING 3-CHLORO-2-VINYLPHENYLSULFONATES

Номер: US20180079717A1
Автор: BRÜCHNER Peter, Ford Mark James, Himmler Thomas, PAZENOK Sergii
Принадлежит:

The present invention relates to a new process for preparing 3-chloro-2-vinylphenylsulfonate derivatives. 2. A process according to claim 1 , wherein{'sup': '1', 'Rrepresents methyl, ethyl, n-propyl, i-propyl, n-butyl, phenyl, 4-methylphenyl or benzyl;'}{'sup': '2', 'sub': 3', '2', '3', '2', '2', '3, 'Rrepresents F, Cl, FC, FHC, ClC, ClHC, ClHC or ClCO;'}{'sup': 3', '4, 'sub': 3', '2', '3', '2', '2, 'Rand Rindependently from each other represent FC, FHC, ClC, ClHC or ClHC;'}{'sup': '5', 'sub': 3', '2', '2', '3', '2, 'Rrepresents F, Cl, CCl, CHCl, CHCl, CF, CHFor 3-chloro-2-methylphenoxy;'}{'sup': '6', 'sub': 3', '2', '2', '3', '2, 'Rrepresents F, Cl, CCl, CHCl, CHCl, CF, CHFor 3-chloro-2-(dichloromethyl) phenoxy;'}{'sub': '2', 'sup': '1', 'W represents F, Cl or OSOR;'}Q represents Na, K, MgCl or MgBr.3. A process according to claim 1 , wherein{'sup': '1', 'Rrepresents methyl, ethyl, n-propyl, phenyl, 4-methylphenyl;'}{'sup': '2', 'sub': 3', '2', '3', '2', '2', '3, 'Rrepresents F, Cl, FC, FHC, ClC, ClHC, ClHC or ClCO;'}{'sup': 3', '4, 'sub': 3', '3', '2', '2, 'Rand Rindependently from each other represent FC, ClC, ClHC, ClHC;'}{'sup': '5', 'sub': 3', '2', '2', '3', '2, 'Rrepresents F, Cl, CCl, CHCl, CHCl, CF, FHC or 3-chloro-2-methylphenoxy;'}{'sup': '6', 'sub': 3', '2', '2', '3', '2, 'Rrepresents F, Cl, CCl, CHCl, CHCl, CF, FHC or 3-chloro-2-(dichloro)methylphenoxy;'}{'sub': '2', 'sup': '1', 'W represents F, Cl or OSOR;'}Q represents Na, K, MgCl or MgBr.4. A process according to claim 1 , wherein{'sup': '1', 'Rrepresents methyl or 4-methylphenyl;'}{'sup': '2', 'sub': 3', '3, 'Rrepresents F, Cl, FC or ClCO;'}{'sup': 3', '4, 'sub': 3', '3, 'Rand Rindependently from each other represent FC or ClC;'}{'sup': '5', 'sub': 3', '3, 'Rrepresents F, Cl, CCl, FC or 3-chloro-2-methylphenoxy;'}{'sup': '6', 'sub': 3', '3, 'Rrepresents F, Cl, CCl, FC or 3-chloro-2-(dichloro)methylphenoxy;'}{'sub': '2', 'sup': '1', 'W represents F, Cl or OSOR;'}Q represents MgCl or MgBr.5. A process ...

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Номер записи: 51
12-03-2020 дата публикации

Carbonate derivative production method

Номер: US20200079723A1
Автор: Akihiko Tsuda
Принадлежит: Kobe University NUC, Mitsubishi Gas Chemical Co Inc

The objective of the present invention is to provide a method for producing a carbonate derivative in a safe and efficient manner. The method for producing a carbonate derivative according to the present invention is characterized in comprising irradiating light on a composition containing a C1-4 halogenated hydrocarbon having one or more kinds of halogen atoms selected from the group consisting of a chlorine atom, a bromine atom and an iodine atom, a nucleophilic functional group-containing compound and the specific base in the presence of oxygen.

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Номер записи: 52
29-03-2018 дата публикации

PREPARING METHOD OF ALIPHATIC POLYCARBONATE

Номер: US20180086880A1
Автор: Li Jianguo, LIU Shaoying, WANG Gongying, WANG Ziqing, YANG Xiangui, Yao Jie, Zhang Hua
Принадлежит:

A preparing method of an aliphatic polycarbonate is provided to synthesize oligomer monomers by a transesterification reaction of carbonic acid dialkyl esters and aliphatic diols with accelerants in an atmosphere of a protective gas, and generate an aliphatic polycarbonate polymer by a polycondensation reaction of the oligomer monomers in a condition of high temperature and low pressure. According to the disclosure, environmentally friendly compounds with low boiling points and low costs are utilized as the accelerants to substitute the enzyme or acid-base catalysts to prepare aliphatic polycarbonate polymers in the prior art, and the cost is reduced; meanwhile, in the process of generating the aliphatic polycarbonate polymers, the accelerants can be removed from the reaction system along with the pressure reduced in the reaction system. The synthesis system is simple; moreover, the aliphatic polycarbonate obtained by the preparing method provided by the disclosure has merits such as superior colors. 1. A preparing method of an aliphatic polycarbonate comprising following steps:in an atmosphere of a protective gas, synthesizing oligomer monomers by a transesterification reaction of carbonic acid dialkyl esters and aliphatic diols with accelerants;generating an aliphatic polycarbonate polymer by a polycondensation reaction of the oligomer monomers in a predefined temperature and under a predefined pressure.2. The preparing method of an aliphatic polycarbonate according to claim 1 , wherein the protective gas is nitrogen.3. The preparing method of an aliphatic polycarbonate according to claim 1 , wherein the carbonic acid dialkyl esters are one or a combination of some of dimethyl carbonates claim 1 , diethyl carbonates and diphenyl carbonates.4. The preparing method of an aliphatic polycarbonate according to claim 1 , wherein the aliphatic diols are one or more of ethylene glycols claim 1 , 1 claim 1 ,2-propylene glycols claim 1 , 1 claim 1 ,3-propylene glycols claim ...

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Номер записи: 53
21-03-2019 дата публикации

SYNTHETIC ROUTE TO ANTI-VIRAL AGENTS

Номер: US20190084966A1
Автор: Abrahamson Michael J., Bishop Richard D., Cink Russell D., Engstrom Kenneth M., Hill David R., Kallemeyn Jeff M., Leanna Marvin R., Lukin Kirill A., Mei Jianzhang, Morrill Westin H., Pelc Matthew J., Ravn Matthew M., Towne Timothy B., Welch Dennie S., Zhao Gang
Принадлежит:

The invention provides methods of synthesizing a viral protease inhibitor in high yield, without using expensive catalysts or challenging reaction conditions. 118-. (canceled)23. The composition of claim 22 , wherein solvent A is dichloromethane.24. The composition of or claim 22 , wherein solvent B comprises water.29. The composition of claim 28 , wherein solvent A is dichloromethane.30. The composition of or claim 28 , wherein solvent B comprises water.35. The composition of claim 34 , wherein solvent A is dichloromethane.36. The composition of or claim 34 , wherein solvent B comprises water. This application claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 62/026,412, filed Jul. 18, 2014, the contents of which are hereby incorporated by reference.Complex biologically active molecules are challenging, expensive, and time-consuming to synthesize. Synthesizing chiral, non-racemic compounds with good enantio- and diastereoselectivity is even more challenging. An example of such a molecule is Compound 1:This compound is a potent inhibitor of the hepatitis C virus (HCV) NS3/4A protease; it shows broad genotype activity and substantially improved in vitro profile compared to earlier generation HCV NS3/4A protease inhibitors.The original synthesis of this compound requires a ring closing metathesis (RCM) reaction for synthesis of the macrocycle (see WO 2012/040167). However, this RCM reaction involves high catalyst loading and expensive starting materials, resulting in low throughput due to dilute reaction conditions and increased costs.There exists a need for new, efficient synthetic methods to construct Compound 1.In certain embodiments, the invention relates to a compound selected from:or a salt thereof.In certain embodiments, the invention relates to a compound selected from:or a salt thereof.In certain embodiments, the invention relates to a compound selected from:or a salt thereof.In certain embodiments, the invention relates to a ...

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Номер записи: 54
26-06-2014 дата публикации

METHOD FOR ALCOHOLYSIS OF POLYCARBONATE COMPOSITIONS CONTAINING FLAME RETARDANT OR ACRYLONITRILE-BUTADIENE-STYRENE

Номер: US20140179892A1
Автор: Bell Philip Wesley, Ganapathy Bhotla Venkata Ramanarayana, Mahalingam Rathinam Jothi, STANISLAUS Alexander
Принадлежит: SAUDI BASIC INDUSTRIES CORPORATION

The disclosure provides a method for alcoholysis of a polycarbonate-containing composition comprising a polycarbonate and a component comprising a phosphorus-containing flame retardant, an acrylonitrile-butadiene-styrene, or a combination of the phosphorus-containing flame retardant and acrylonitrile-butadiene-styrene. The method comprises contacting the composition with a solvent that forms a solution or a filterable suspension of the component but not the polycarbonate; separating the solution or the filterable suspension from the polycarbonate; and heating the polycarbonate in the presence of an alcohol and a catalyst at a temperature from 70° C. to 200° C., and a pressure from 5 mbar to 40 bar for a time sufficient to depolymerize the polycarbonate and produce a dihydroxy aromatic compound and a dialkyl carbonate. 1. A method for alcoholysis of a polycarbonate-containing composition comprising a polycarbonate and a component comprising a phosphorus-containing flame retardant , acrylonitrile-butadiene-styrene , or a combination of the phosphorus-containing flame retardant and acrylonitrile-butadiene-styrene , the method comprisingcontacting the composition with a solvent that forms a solution or filterable suspension of the component but not the polycarbonate;separating the solution or suspension from the polycarbonate; andheating the separated polycarbonate with an alcohol in the presence of a catalyst at a temperature from 70° C. to 200° C., and a pressure from 5 mbar to 40 bar for a time sufficient to depolymerize the polycarbonate to provide a dihydroxy aromatic compound and a dialkyl carbonate.2. The method of claim 1 , wherein the polycarbonate is bisphenol A polycarbonate claim 1 , and the dihydroxy aromatic compound is bisphenol A.3. The method of claim 1 , wherein the alcohol is methanol claim 1 , ethanol claim 1 , or n-butanol.4. The method of claim 1 , wherein the alcohol is added as a methanol stream containing from 0 to 50 weight percent of dimethyl ...

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Номер записи: 55
26-03-2020 дата публикации

SYNTHETIC ROUTE TO ANTI-VIRAL AGENTS

Номер: US20200095230A1
Автор: Abrahamson Michael J., Bishop Richard D., Cink Russell D., Engstrom Kenneth M., Hill David R., Kallemeyn Jeff M., Leanna Marvin R., Lukin Kirill A., Mei Jianzhang, Morrill Westin H., Pelc Matthew J., Ravn Matthew M., Towne Timothy B., Welch Dennie S., Zhao Gang
Принадлежит:

The invention provides methods of synthesizing a viral protease inhibitor in high yield, without using expensive catalysts or challenging reaction conditions. 118-. (canceled)20. The method of claim 19 , wherein the solvent comprises toluene claim 19 , dichloromethane claim 19 , THF claim 19 , acetone claim 19 , heptane claim 19 , hexane claim 19 , methyl tert-butyl ether claim 19 , ethyl acetate claim 19 , dioxane claim 19 , DMF claim 19 , DMA claim 19 , acetonitrile claim 19 , or DMSO claim 19 , or a mixture thereof.21. The method of claim 20 , wherein the solvent comprises toluene claim 20 , acetonitrile claim 20 , or dichloromethane or a mixture thereof.22. The method of claim 19 , wherein the reaction of scheme B takes place at a temperature from about −20° C. to about 10° C.23. The method of claim 22 , wherein the temperature is about −20° C. claim 22 , about −15° C. claim 22 , about −10° C. claim 22 , about −5° C. claim 22 , about 0° C. claim 22 , about 5° C. claim 22 , or about 10° C.24. The method of claim 22 , wherein the temperature is about −10° C. to about 10° C.25. The method of claim 22 , wherein the temperature is about 0° C. This application claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 62/026,412, filed Jul. 18, 2014, the contents of which are hereby incorporated by reference.Complex biologically active molecules are challenging, expensive, and time-consuming to synthesize. Synthesizing chiral, non-racemic compounds with good enantio- and diastereoselectivity is even more challenging. An example of such a molecule is Compound 1:This compound is a potent inhibitor of the hepatitis C virus (HCV) NS3/4A protease; it shows broad genotype activity and substantially improved in vitro profile compared to earlier generation HCV NS3/4A protease inhibitors.The original synthesis of this compound requires a ring closing metathesis (RCM) reaction for synthesis of the macrocycle (see WO 2012/040167). However, this RCM reaction ...

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Номер записи: 56
08-04-2021 дата публикации

Process for the work-up and reuse of salt-containing process water

Номер: US20210101815A1
Автор: Andreas Bulan, Knud Werner, Yuliya SCHIESSER
Принадлежит: Covestro Intellectual Property GmbH and Co KG

A process for the work-up of salt-containing process water which contains an alkali metal chloride as salt in a concentration of at least 4% by weight and organic or inorganic and organic impurities from chemical production processes and reuse of the salt by a combination of prepurification and concentration, crystallization and purification of the salt and optionally subsequently use of the salt in an electrolysis for producing basic chemicals are described.

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Номер записи: 57
02-06-2022 дата публикации

PREPARING METHOD OF LINEAR CARBONATE COMPOUNDS

Номер: US20220169591A1
Автор: Lee Hyoyoung, LEE Jinsun, NGUYEN Thi Kim Chau
Принадлежит:

Provided is a preparing method of linear carbonate compounds, including performing a coupling reaction of carbon dioxide in the presence of a titanium dioxide complex. The titanium dioxide complex includes an anatase phase and a rutile phase, a reduced titanium dioxide which is formed by selectively reducing any one of the anatase phase and the rutile phase, and a metallic oxide bound to the reduced titanium dioxide. 1. A preparing method of linear carbonate compounds , comprising:performing a coupling reaction of carbon dioxide in the presence of a titanium dioxide complex,wherein the titanium dioxide complex has an anatase phase and a rutile phase, a reduced titanium dioxide which is formed by selectively reducing any one of the anatase phase and the rutile phase, and a metallic oxide bound to the reduced titanium dioxide.2. The preparing method of linear carbonate compounds according to claim 1 , wherein the titanium dioxide complex serves as a photocatalyst so that carbon dioxide is reduced to carbon monoxide.3. The preparing method of linear carbonate compounds according to claim 1 , wherein the coupling reaction of carbon dioxide includes a reaction between carbon dioxide and alcohol.4. The preparing method of linear carbonate compounds according to claim 3 , wherein the alcohol includes a member selected from the group consisting of methanol claim 3 , ethanol claim 3 , propanol claim 3 , butanol claim 3 , iso-propylol and combinations thereof.5. The preparing method of linear carbonate compounds according to claim 1 , wherein the linear carbonate compounds include a member selected from the group consisting of dimethyl carbonate claim 1 , diethyl carbonate claim 1 , methyl ethyl carbonate claim 1 , dipropyl carbonate claim 1 , methyl propyl carbonate claim 1 , ethyl propyl carbonate claim 1 , dibutyl carbonate and combinations thereof.6. The preparing method of linear carbonate compounds according to claim 1 , wherein the titanium dioxide complex is doped ...

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Номер записи: 58
19-04-2018 дата публикации

PROCESS FOR RECOVERY AND REGENERATION OF DEACTIVATED CATALYSTS USED IN DIALKYL CARBONATE SYNTHESIS

Номер: US20180104680A1
Автор: KELKAR Ashutosh Anant, KINAGE Anil Kisan, MOTE Dhananjay Ravindra, RANADE Vivek Vinayak, RANE Vilas Hari, ROY Lalita Sanjib, SHINGOTE Savita Kiran
Принадлежит:

The present invention discloses a process for recovery and regeneration of rare earth metals or salts thereof used as catalyst and which is conveniently integrated within the overall flow sheets of manufacturing dialkyl carbonates. Alkyl carbamate, alcohol and a rare earth metal salt as catalyst selected from the lanthanide series are added in a reactor to afford dialkyl carbonate. The rare earth metal catalyst is selected from samarium, cerium, lanthanum, neodymium, ytterbium, europium and gadolinium. Ammonia is added to a portion of the reaction mixture to precipitate the catalyst and the separated deactivated catalyst is dissolved in acid to afford regenerated catalyst, e.g., in triflic acid in the case of samarium triflate catalyst. 1. A process for recovery and regeneration of catalyst used in the synthesis of dialkyl carbonates comprising the steps of:a) adding alkyl carbamate, alcohol and rare earth metal salt as catalyst selected from lanthanide series in a reactor to afford corresponding dialkyl carbonate and reaction mixture with deactivated catalyst;b) removing part of reaction mixture of step (a) from the reactor bottom;c) Separating deactivated catalyst residue from the reaction mixture of step (b) and dissolving in acid corresponding to the rare earth metal salt to afford regenerated catalyst.2. The process as claimed in claim 1 , wherein said process optionally comprises addition of ammonia to part of reaction mixture of step (b) in the pressure range of 1 to 25 bar and temperature ranging from 60 to 200° C. to precipitate catalyst.3. The process as claimed in claim 1 , wherein said dialkyl carbonate is selected from di methyl carbonate claim 1 , di ethyl carbonate claim 1 , di propyl carbonate claim 1 , di butyl carbonate.4. The process as claimed in claim 1 , wherein said rare earth metal catalyst is selected from Samarium (Sm) claim 1 , Cerium (Ce) claim 1 , Lanthanum (La) claim 1 , Neodymium (Nd) claim 1 , Ytterbium (Yb) claim 1 , Europium (Eu) ...

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Номер записи: 59
20-04-2017 дата публикации

PROCESS FOR PRODUCING DIMETHYL CARBONATE

Номер: US20170107169A1
Автор: Huang Chien Fu, Tsai Yi Ta
Принадлежит:

The present disclosure relates to a recycling method for producing dimethyl carbonate. The process is unique in that it produces a by-product that can be re-used in the process as a raw material for repeating the process. For example, when the process is directed to synthesizing dimethyl carbonate, glycerol is used as a starting material. Glycerol is also a by-product produced during formation of dimethyl carbonate, and therefore it can be re-used as starting material to generate more dimethyl carbonate. 2. The process of claim 1 , wherein the halogenating agent in (a) is hydrogen chloride or a mixture of gaseous hydrogen chloride and an aqueous solution of hydrogen chloride.3. The process of claim 1 , wherein the reaction of the compound of formula (I) with an acid in (a) is carried out in the presence of a catalyst.4. The process of claim 3 , wherein the catalyst is an organic acid catalyst claim 3 , an inorganic acid catalyst claim 3 , or a heterogeneous acid catalyst.5. The process of claim 4 , wherein the catalyst is an organic acid catalyst selected from the group consisting of a carboxylic claim 4 , a sulfonic claim 4 , and a phosphoric acid.6. The process of claim 1 , wherein the base in (b) is selected from the group consisting of a hydroxide claim 1 , a carbonate and a bicarbonate of alkali metal claim 1 , alkaline earth metal claim 1 , and a basic ion exchange resin.7. The process of claim 6 , wherein the base in (b) is selected from the group consisting of LiOH claim 6 , NaOH claim 6 , KOH claim 6 , CsOH claim 6 , RbOH claim 6 , Mg(OH) claim 6 , Ca(OH) claim 6 , Sr(OH) claim 6 , NHOH claim 6 , Ba(OH) claim 6 , NaCO claim 6 , and KCO claim 6 , NaHCOand KHCO.8. (canceled)9. The process of claim 1 , wherein the reaction of the compound of formula (III) with carbon dioxide in (c) is carried out in the presence of a catalyst.10. The process of claim 9 , wherein the catalyst is an alkali metal halide salt.11. The process of claim 10 , wherein the alkali metal ...

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Номер записи: 60
27-04-2017 дата публикации

PROCESS FOR PREPARING ALKANOLAMINES USEFUL IN REMOVAL OF ACID-GAS FROM A GASEOUS STREAM

Номер: US20170114001A1
Автор: Atkins Martin, Coleman Fergal, Delavoux Yoan
Принадлежит:

The invention relates to a process for preparing alkanolamines, useful in the removal of COand/or HS from a COand/or HS containing gaseous stream, wherein the preparation of the alkanolamines is conducted using specifically selected ionic liquids under specifically selected reaction conditions. 2. A process according to claim 1 , wherein the molar ratio of glycerol to dimethylcarbonate in step i) is from 1:5 to 1:8.3. A process according to or claim 1 , wherein the reaction in step i) is conducted at a temperature of from 110° C. to 140° C.4. A process according to any of to claim 1 , wherein the reaction in step i) is conducted at a temperature of from 115° C. to 130° C.5. A process according to any of to claim 1 , wherein the reaction in step i) is conducted at a temperature of from 115° C. to 125° C.6. A process according to any of to claim 1 , wherein the amount of ionic liquid catalyst in step i) is at least 5 mol % based on glycerol.7. A process according to any of to claim 1 , wherein the glycidol formed in step i) is reacted with the amine of formula III in step ii) without prior separating from the reaction mixture.8. A process according to any of to claim 1 , wherein the glycidol formed in step i) is isolated from the reaction mixture before being reacted with the amine of formula III in step ii).9. A process according to claim 8 , wherein glycidol is isolated from the reaction mixture using liquid-liquid extraction and glycidol is preferentially extracted into an organic phase.10. A process according to claim 9 , wherein the liquid extraction is with ethyl acetate and glycidol is preferentially extracted into an ethyl acetate organic phase.11. A process according to claim 8 , wherein glycidol is isolated from the reaction mixture using azeotropic distillation.12. A process according to claim 11 , wherein azeotropic distillation is performed using cumene.13. A process according to claim 12 , wherein the glycidol-cumeme mixture obtained from azeoptropic ...

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Номер записи: 61
05-05-2016 дата публикации

PROCESS FOR PRODUCING AROMATIC CARBONATES

Номер: US20160122281A1
Автор: VAPORCIYAN Garo Garbis
Принадлежит:

This invention provides a method for producing an alkylaryl carbonate comprising: a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in the presence of a transesterification catalyst in a reactive distillation column; b) withdrawing a first product stream comprising the alkylaryl carbonate from the reactive distillation column; c) withdrawing a second product stream comprising alkyl hydroxy compound and dialkylcarbonate; d) adding fresh dialkylcarbonate to the second product stream; e) separating the dialkylcarbonate from the alkyl hydroxy compound; and f) recycling the dialkylcarbonate from step e) to the reactive distillation column. 1. A method for producing an alkylaryl carbonate comprising:a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in the presence of a transesterification catalyst in a reactive distillation column;b) withdrawing a first product stream comprising the alkylaryl carbonate from the reactive distillation column;c) withdrawing a second product stream comprising alkyl hydroxy compound and dialkylcarbonate from the reactive distillation column;d) adding fresh dialkylcarbonate to the second product stream;e) separating dialkylcarbonate from the alkyl hydroxy compound; andf) recycling the dialkylcarbonate from step e) to the reactive distillation column.2. The method of wherein the transesterification catalyst is selected from the group consisting of a homogeneous catalyst claim 1 , a heterogeneous catalyst and mixtures thereof.3. The method of wherein the heterogeneous catalyst is contained in a bed in the reactive distillation column.4. The method of wherein step (e) is carried out in a distillation column and the fresh dialkylcarbonate is added to the second product stream before the second product stream enters the distillation column.5. The method of wherein step (e) is carried out in a distillation column and the fresh ...

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Номер записи: 62
07-05-2015 дата публикации

Capacitors having conditioned carbon for electrodes

Номер: US20150125760A1
Автор: Joel R. Mccloskey, W. Novis Smith
Принадлежит: Retriev Technologies Inc

There is provided an improvement for capacitors having activated carbon electrodes by the use of an electrolyte solution containing a carbonate of the formula RO(C═O)OR 1 and a conductive salt such as a lithium salt or a quaternary ammonium salt at a concentration of from 0.6 to 3 mol/l.

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Номер записи: 63
25-04-2019 дата публикации

Method for the manufacture of fluorinated compounds

Номер: US20190119192A1
Автор: Emanuela Antenucci, Giuseppe Marchionni, Marco Galimberti, Vito Tortelli
Принадлежит: Solvay Specialty Polymers Italy SpA

A method for the manufacture of perfluorinated compounds is herein disclosed. In particular, the method is useful for the manufacture of perfluorooxyalkyl carboxylic acid salts which can be used as surfactants. The method envisages the fluorination or a fluoroformate of an alcohol comprising a —CH2OCH2-moiety at a temperature equal to or higher than 20° C. and allows obtaining high yields and selectivity.

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Номер записи: 64
21-05-2015 дата публикации

PROCESS FOR MAKING DIMETHYL CARBONATE

Номер: US20150141690A1
Автор: Pulikkeel Unnikrishnan, Srinivas Darbha
Принадлежит: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

An eco-friendly process for making dimethyl carbonate comprising contacting methanol with carbon dioxide in the presence of a solid, calcined catalyst derived from zirconium phosphonate catalyst having molecular formula: Zr(X)Y.mHO where X refers to phosphonate, Y refers to HPOor HPO, n varies from 0.2 to 1.8 and m varies from 0 to 5, is disclosed. 1. A process for making dimethyl carbonate in high yields and with 100 wt % selectivity wherein the said process comprises the steps of: [{'br': None, 'sub': 2-n', 'n', '2, 'i': '.m', 'Zr(X)YHO'}, {'sub': 4', '3, 'sup': 2−', '2−, 'Wherein, X refers to phosphonate, Y refers to HPOor HPO, n varies from 0.2 to 1.8 and m varies from 0 to 5, prepared by the known method;'}], '(d) providing reusable, water-tolerant, solid, calcined catalyst derived from zirconium phosphonate having molecular formula(e) contacting methanol with carbon dioxide in the presence of catalyst as provided in step (a) wherein the amount of catalyst ranges from 0.5 to 5% by weight of methanol, pressure of carbon dioxide ranges from 1 to 60 bar and molar ratio of methanol and carbon dioxide varies from 0.25:1 to 10:1;(f) subjecting the reaction mixture as obtained in step (b) to a temperature in the range of 80 to 200° C. and for a period in the range of 3 to 12 hrs followed by lowering the temperature, venting out or recycling unreacted carbon dioxide and separating product dimethyl carbonate from the left out methanol, by-product water and catalyst by known procedures.2. The process according to claim 1 , wherein the reaction is carried out optionally in the presence of solvent or water trapping agent or both.3. The process according to claim 2 , wherein solvent used is selected from the group consisting of N claim 2 ,N-dimethyl formamide claim 2 , tetrahydrofuran and dimethylsulphoxide.4. The process according to claim 1 , wherein water trapping agent used is selected from the group consisting of molecular sieves claim 1 , 2 claim 1 ,2-dimethoxy ...

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Номер записи: 65
07-08-2014 дата публикации

GOLD-CATALYZED SYNTHESIS OF CARBONATES AND CARBAMATES FROM CARBON MONOXIDE

Номер: US20140221679A1
Автор: Friend Cynthia M., Madix Robert J., Xu Bingjun
Принадлежит: President and Fellows of Harvard College

The invention provides a method for producing organic carbonates via the reaction of alcohols and carbon monoxide with oxygen adsorbed on a metallic gold or gold alloy catalyst. 2. The method of claim 1 , wherein X is O.3. The method of claim 1 , wherein X is NR.4. The method of claim 1 , wherein the source of the adsorbed oxygen is O.5. The method of claim 1 , wherein the source of the adsorbed oxygen is O.6. The method of claim 1 , wherein Ris C1-C8 straight chain alkyl.7. The method of claim 6 , wherein Ris methyl.8. The method of claim 1 , wherein Ris C1-C8 straight chain alkyl.9. The method of claim 8 , wherein Ris methyl.10. The method of claim 1 , wherein X is O claim 1 , and Rand Rare the same.11. The method of claim 1 , wherein X is O claim 1 , and Rand Rare different.12. The method of claim 1 , wherein Ris C1-C8 straight chain alkyl.13. The method of claim 1 , wherein ROH is supplied in the gas phase claim 1 , and the temperature is between 250 K and 300 K. This application claims benefit of U.S. provisional application No. 61/572,416, filed Jul.This invention was made with government support under DE-FG02-84-ER13289 awarded by the U.S. Department of Energy and under CHE-0952790 awarded by the National Science Foundation. The Government has certain rights in the invention.The invention is in the fields of synthetic organic chemistry and catalysis, and relates specifically to a process for preparing carbonates and carbamates. More particularly, the present invention relates to a process for preparing carbonates and carbamates via oxidative carbonylation in the presence of a metallic gold catalyst.Dialkyl carbonates are industrially useful as lubricants, fuel additives, and reactive reagents in a wide variety of processes. In particular, dimethyl carbonate (DMC) has found use as an environmentally-acceptable solvent, high-octane oxygenated fuel additive, and esterifying and methylating agent, and the future demand for DMC is projected to exceed current ...

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Номер записи: 66
08-09-2022 дата публикации

ORGANIC CARBONATE PRODUCTION PROCESS

Номер: US20220281799A1
Автор: FISCHER Kai Jurgen, Nenu Nicoleta Cristina, ONWUSOGH Udeogu Chijioke, VAN DE HAAR Peter, VAN DER HEIDE Evert
Принадлежит:

The present invention relates to a process for preparing an organic carbonate, comprising contacting carbon dioxide with an alcohol in the presence of water and a catalyst in a reaction zone resulting in the production of the organic carbonate, wherein the organic carbonate is continuously removed from the reaction zone. 1. Process for preparing an organic carbonate , comprising contacting carbon dioxide and an alcohol in the presence of water and a catalyst in a reaction zone resulting in the production of the organic carbonate , wherein the organic carbonate is continuously removed from the reaction zone.2. Process according to claim 1 , wherein the alcohol is an aromatic C-Calcohol and/or an aliphatic C-Calcohol.3. Process according to claim 1 , wherein the temperature is of from 50 to 200° C.4. Process according to claim 1 , wherein the pressure is from 5 mbar to 10 bar.5. Process according to claim 1 , wherein the reaction zone is part of a distillation column and the organic carbonate is continuously removed from the distillation column.6. Process according to claim 5 , wherein carbon dioxide is contacted with an alcohol in the presence of water and a catalyst in a reaction zone of a first distillation column resulting in a mixture comprising carbon dioxide claim 5 , water claim 5 , alcohol and organic carbonate claim 5 , wherein organic carbonate is continuously removed from the first distillation column in a bottom stream from the first distillation column and wherein the top stream from the first distillation column comprises carbon dioxide claim 5 , water claim 5 , alcohol and optionally organic carbonate.7. Process according to claim 6 , wherein the top stream from the first distillation column comprises carbon dioxide claim 6 , water claim 6 , alcohol and organic carbonate claim 6 , and wherein:said top stream is at least partially condensed and separated into a gas stream comprising carbon dioxide, a first liquid stream comprising organic carbonate and ...

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Номер записи: 67
08-09-2022 дата публикации

PURIFICATION OF AROMA CHEMICALS

Номер: US20220281800A1
Автор: Danz Manuel, HACKEMANN Eva Katharina, JEGELKA Markus, KICKMANN Volker, Maurer Stephan, RENZ Stephanie
Принадлежит:

The presently claimed invention relates to a process for purification of aroma compounds by distillation. Specifically, it relates to a process for purification of carbonic esters of formula (I) using a combination of distillative processes. 118.-. (canceled)22. The method according to claim 19 , wherein in step a) the steam stripping is carried out in a stripping column having a sump temperature in the range of ≥50° C. to ≤120° C. and head temperature in the range of ≥40° C. to ≤60° C.23. The method according to claim 19 , wherein the steam stripping is carried out at a pressure in the range of ≥100 mbar to ≤200 mbar.24. The method according to claim 19 , wherein in step a) the mixture comprises at least one compound having a vapor pressure in the range of ≥0.0001 bar to ≤0.20 bar at 60° C.25. The method according to claim 24 , wherein the at least one compound having a vapor pressure in the range of ≥0.0001 bar to ≤0.20 bar at 60° C. is selected from the group consisting of non-polar organic solvents and impurities formed during the synthesis of the carbonic esters of formula (I).26. The method according to claim 25 , wherein the non-polar organic solvents are selected from the group consisting of aliphatic hydrocarbons claim 25 , aromatic hydrocarbons and ethers.27. The method according to claim 25 , wherein the impurities formed during the synthesis of carbonic esters of formula (I) are menthyl chloride and menthol.28. The method according to claim 25 , wherein the mixture comprising at least one compound having a vapor pressure in the range of ≥0.0001 bar to ≤0.20 bar at 60° C. is further separated by batch distillation.29. The method according to claim 28 , wherein the batch distillation is carried out at a sump temperature range of ≥50° C. to ≤80° C. and head temperature in the range of ≥30° C. to ≤60° C.30. The method according to claim 28 , wherein the batch distillation is carried out at a pressure in the range of ≥50 mbar to ≤150 mbar.31. The method ...

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Номер записи: 68
26-05-2016 дата публикации

FLUORINATED CARBONATES COMPRISING DOUBLE BOND-CONTAINING GROUPS, METHODS FOR THEIR MANUFACTURE AND USES THEREOF

Номер: US20160145190A1
Автор: BOMKAMP Martin, KIM Hag-Soo
Принадлежит:

Fluorinated carbonates comprising double-bond containing groups were prepared and their use as solvent additives or solvents in lithium ion batteries, lithium air batteries, lithium sulphur batteries and supercapacitors is described. Preferred compounds contain at least one alkenyl or at least one (hetero)aryl group. 1. A compound of general formula (I) ,{'br': None, 'sup': 1', '2', '3, 'RRCF—O—C(O)—O—R'}{'sup': 1', '2, 'wherein Rand Rare independently H, F, alkyl, cycloalkyl, alkylene-aryl, or alkylene-heteroaryl; and'}{'sup': '3', 'wherein Ris a double bond-containing group.'}2. The compound according to wherein Ris an alkenyl.3. The compound according to wherein Ris an aryl group or an alkylene-aryl group.4. The compound according to wherein Ris H.5. The compound according to wherein Ris H or an alkyl group.6. The compound according to wherein R1 is methyl claim 1 , R2 is H claim 1 , R3 is allyl and the compound is (1-fluoroethyl)allyl carbonate.7. The compound according to wherein R1 is methyl claim 1 , R2 is H claim 1 , R3 is phenyl and the compound is (1-fluoroethyl)phenyl carbonate.8. A method for the manufacture of a compound of general formula (I) claim 1 ,{'br': None, 'sup': 1', '2', '3, 'RRCF—O—C(O)—O—R'} {'br': None, 'sup': 1', '2, 'RRCF—O—C(O)F'}, 'the method comprising a step of reacting a fluoroformate of general formula (II),'}{'sup': '3', 'with an alcohol of general formula (III), R—OH;'}{'sup': '1', 'wherein Ris H, F, alkyl, cycloalkyl, alkylene-aryl, or alkylene-heteroaryl;'}{'sup': '2', 'wherein Ris H, and'}{'sup': '3', 'wherein Ris a double bond-containing group.'}9. A method for the manufacture of a compound of general formula (I) claim 1 ,{'br': None, 'sup': 1', '2', '3, 'RRCF—O—C(O)—O—R'}{'sup': 1', '2, 'claim-text': {'br': None, 'sup': 1', '2, 'RRCF—O—C(O)X'}, 'the method comprising a first step of reacting phosgene or a phosgene analogue with a compound of the general formula (IV) RRCF—OH to form an intermediate of the general formula (V ...

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Номер записи: 69
04-06-2015 дата публикации

METHOD FOR PRODUCING CARBONATE COMPOUND AND METHOD FOR PRODUCING AROMATIC POLYCARBONATE

Номер: US20150152037A1
Автор: Fujimori Atsushi, Hirashima Atsushi, Okamoto Hidekazu, SHIMOKAWA Keisuke, Takahashi Toru
Принадлежит:

The present invention relates to a method for producing a carbonate compound containing: a first step of reacting a compound represented by the following Formula (1) with a compound represented by the following Formula (21) or a compound represented by the following Formula (22) to obtain a reaction mixture containing a carbonate compound, and a second step of bringing the reaction mixture containing a carbonate compound into contact with a strongly basic compound, 3. The method for producing a carbonate compound according to that obtains a carbonate compound in which a total content of the compounds represented by Formula (41) and the compounds represented by Formula (42) is 5 ppm or less based on the total amount of the carbonate compound.4. The method for producing a carbonate compound according to claim 1 ,{'sup': 1', '2, 'wherein Rrepresents a monovalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, and Rrepresents a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms.'}5. The method for producing a carbonate compound according to claim 1 ,wherein in the second step, the reaction mixture is brought into contact with the strongly basic compound in the presence of an alcohol.6. The method for producing a carbonate compound according to claim 1 ,wherein the strongly basic compound is a salt of a base of which a conjugate acid has a pKa of 11 or higher and an alkali metal ion or an alkaline earth metal ion.7. The method for producing a carbonate compound according claim 6 ,wherein the strongly basic compound is a hydroxide or an alkoxide of an alkali metal or a hydroxide or an alkoxide of an alkaline earth metal.8. The method for producing a carbonate compound according to claim 1 ,wherein in the first step, the compound represented by Formula (1) is reacted with the compound represented by Formula (21) or the compounds represented by Formula (22) in the presence of the following catalyst for synthesizing a carbonate compound:the catalyst ...

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Номер записи: 70
17-06-2021 дата публикации

CATALYST AND PRECURSOR THEREOF AND METHOD OF FORMING DIALKYL CARBONATE

Номер: US20210178374A1
Автор: CHAO Yu-Shan, HSU Hsi-Yen, WU Kuo-Ching, YANG Chih-Yao
Принадлежит: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

A method of forming dialkyl carbonate is provided, which includes introducing carbon dioxide into a catalyst to form dialkyl carbonate, wherein the catalyst is formed by activating a catalyst precursor using alcohol, wherein alcohol is R—OH, and Ris Calkyl group or Caryl or heteroaryl group. The catalyst precursor is formed by reacting Sn(R)(L)and Ti(OR), and Sn(R)(L)and Ti(OR)have a molar ratio of 1:2 to 2:1. Ris Calkyl group, Ris H or Calkyl group, and L is O—(C═O)—R, and Ris Calkyl group. The dialkyl carbonate is 1. A catalyst precursor , being{'sup': 1', '2, 'sub': 2', '2', '4, 'formed by reacting Sn(R)(L)and Ti(OR),'}{'sup': 1', '2, 'sub': 2', '2', '4, 'wherein Sn(R)(L)and Ti(OR)have a molar ratio of 1:2 to 2:1,'}{'sup': '1', 'sub': '1-10', 'Ris Calkyl group,'}{'sup': '2', 'sub': '1-12', 'Ris H or Calkyl group, and'}{'sup': 5', '5, 'sub': '1-12', 'L is O—(C═O)—R, and Ris Calkyl group.'}5. A catalyst , being:formed by activating a catalyst precursor using alcohol,{'sup': 3', '3, 'sub': 1-12', '5-12, 'wherein the alcohol is R—OH, and Ris Calkyl group or Caryl or heteroaryl group,'}{'sup': 1', '2', '1', '2, 'sub': 2', '2', '4', '2', '2', '4, 'wherein the catalyst precursor is formed by reacting Sn(R)(L)and Ti(OR), and Sn(R)(L)and Ti(OR)have a molar ratio of 1:2 to 2:1,'}{'sup': '1', 'sub': '1-10', 'Ris Calkyl group,'}{'sup': '2', 'sub': '1-12', 'Ris H or Calkyl group, and'}{'sup': 5', '5, 'sub': '1-12', 'L is O—(C═O)—R, and Ris Calkyl group.'}6. The catalyst as claimed in claim 5 , wherein the catalyst precursor and the alcohol have a molar ratio of 1:2 to 1:50.11. The method as claimed in claim 10 , wherein the step of introducing carbon dioxide into the catalyst is performed at a temperature of 80° C. to 160° C.12. The method as claimed in claim 10 , wherein the step of introducing carbon dioxide into the catalyst is performed under a pressure of 20 bar to 80 bar.16. The method as claimed in claim 10 , further comprising activating the used catalyst using ...

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Номер записи: 71
07-05-2020 дата публикации

DIARYL CARBONATE AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING AN AROMATIC POLYCARBONATE RESIN

Номер: US20200140399A1
Автор: Harada Hidefumi, Isahaya Yoshinori, TAGUCHI Jungo
Принадлежит: MITSUBISHI GAS CHEMICAL COMPANY, INC.

A diaryl carbonate containing a compound of the following formula (I) in an amount of less than 1,000 ppm by mass, and a method for producing the same: 2. The method according to claim 1 , wherein the fourth step comprises a distillation step of claim 1 , using a distillation column claim 1 , obtaining the diaryl carbonate containing the compound of the formula (I) in an amount of less than 1 claim 1 ,000 ppm by mass from the top of the column and obtaining a mixture having concentrated the compound of the formula (I) from the bottom of the column claim 1 , wherein the distillation step is conducted under the following conditions (a) and (b):(a) that the pressure at the top of the distillation column is 0.01 to 10 kPa, and(b) that the reflux ratio is 2 to 20.3. The method according to claim 2 , which further comprises:fifth: filtering off the compound of the formula (I) which is precipitated from the concentrated mixture at a temperature in the range of from 80 to 230° C.4. The method according to claim 3 , which further comprises:sixth: recovering the compound of the chemical formula (I) filtered off in the fifth step and bringing the filtrate back to the fourth step.5. The method according to claim 1 , wherein the alkyl alcohol used in the first step is an alkyl alcohol having 3 to 6 carbon atoms.6. The method according to claim 2 , wherein the alkyl alcohol used in the first step is an alkyl alcohol having 3 to 6 carbon atoms.7. The method according to claim 3 , wherein the alkyl alcohol used in the first step is an alkyl alcohol having 3 to 6 carbon atoms.8. The method according to claim 4 , wherein the alkyl alcohol used in the first step is an alkyl alcohol having 3 to 6 carbon atoms.9. A method for producing an aromatic polycarbonate resin claim 1 , the method comprising performing melt polycondensation in the presence of a transesterification catalyst using the diaryl carbonate produced according to the method of and an aromatic dihydroxy compound. This is a ...

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Номер записи: 72
21-08-2014 дата публикации

Stabilization of pyrocarbonic acid diesters by finely divided solids

Номер: US20140234162A1
Автор: Erasmus Vogl, Johannes Kaulen
Принадлежит: LANXESS DEUTSCHLAND GMBH

Finely divided solids are highly suitable for use as stabilizers for pyrocarbonic acid diesters, it being possible to use the mixtures obtained in this manner for preserving industrial materials and foodstuff.

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Номер записи: 73
21-08-2014 дата публикации

METHOD FOR PRODUCING CYCLIC CARBONATES

Номер: US20140235875A1
Автор: HATTI-KAUL Rajni, Pyo Sang-Hyun
Принадлежит:

Linear or cyclic carbonates as potential monomers for isocyanate-free polyurethanes and polycarbonates were prepared from polyols and dialkyl carbonates or diphenyl carbonates. This invention was developed to produce linear or cyclic carbonates with or without using catalysts. Polyol compounds were reacted with carbonates such as dimethyl carbonate and diethyl carbonate to produce the corresponding linear and/or cyclic carbonate. 1. A method of producing linear or cyclic carbonates comprising the steps of:a. providing a polyol and a dialkyl carbonate or a diphenyl carbonateb. forming a mixture of a polyol and a dialkyl carbonate or a diphenyl carbonate;c. optionally adding a solvent;d. adding an adsorbent; ande. heating the mixture to obtain linear or cyclic carbonates.2. The method of wherein the dialkyl carbonate is dimethyl carbonate or diethyl carbonate.3. The method of wherein the mixture is heated to at least the boiling point of the dialkyl carbonate or the diphenyl carbonate.4. The method according to wherein the mixture is heated to 80° C. or more claim 1 , or 90° C. or more claim 1 , or 100° C. or more; or 120° C. or more; or 140° C. or more.5. The method according to wherein the polyol is a Cto Cor higher tetraol claim 1 , triol or diol or a Cto Ctetraol claim 1 , triol or diol alkyl ester or derivatives thereof.6. The method according to wherein the polyol is selected from trimethylolpropane claim 1 , di-trimethylolpropane claim 1 , pentaerythritol claim 1 , bis-MPA methyl ester claim 1 , TMP-monoallylether claim 1 , TMP-monoacrylate claim 1 , TMP-monomethacrylate claim 1 , 1 claim 1 ,3-butane diol claim 1 , 1 claim 1 ,4-butane diol claim 1 , 1 claim 1 ,2-propane diol or 1 claim 1 ,3-propane diol.7. The method according to wherein the solvent is selected from acetonitrile claim 1 , pyridine and a mixture of THF and toluene or a mixture containing any of said solvents.8. The method according to wherein the adsorbent is molecular sieves of type 3A claim 1 ...

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Номер записи: 74
22-09-2022 дата публикации

CATALYST PRECURSOR

Номер: US20220297099A1
Автор: CHAO Yu-Shan, HSU Hsi-Yen, WU Kuo-Ching, YANG Chih-Yao
Принадлежит: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

A method of forming dialkyl carbonate is provided, which includes introducing carbon dioxide into a catalyst to form dialkyl carbonate, wherein the catalyst is formed by activating a catalyst precursor using alcohol, wherein alcohol is R—OH, and Ris Calkyl group or Caryl or heteroaryl group. The catalyst precursor is formed by reacting Sn(R)(L)and Ti(OR), and Sn(R)(L)and Ti(OR)have a molar ratio of 1:2 to 2:1. Ris Calkyl group, Ris H or Calkyl group, and L is O—(C═O)—R, and Ris Calkyl group. The dialkyl carbonate is 1. A catalyst precursor , being{'sup': 1', '2, 'sub': 2', '2', '4, 'formed by reacting Sn(R)(L)and Ti(OR),'}{'sup': 1', '2, 'sub': 2', '2', '4, 'wherein Sn(R)(L)and Ti(OR)have a molar ratio of 1:1,'}{'sup': '1', 'sub': '1-10', 'Ris Calkyl group,'}{'sup': '2', 'sub': '1-12', 'Ris H or Calkyl group, and'}{'sup': 5', '5, 'sub': '1-12', 'L is O—(C═O)—R, and Ris Calkyl group.'}3. The catalyst precursor as claimed in claim 1 , wherein Ris butyl group claim 1 , and Ris Calkyl group. This application is a Divisional of pending U.S. patent application Ser. No. 16/727,483, filed on Dec. 26, 2019 and entitled “Catalyst and precursor thereof and method of forming dialkyl carbonate”, which is based on, and claims priority from, Taiwan Application Serial Number 108145962, filed on Dec. 16, 2019, the disclosure of which is hereby incorporated by reference herein in its entirety.The technical field relates to a catalyst precursor, and in particular it relates to a catalyst formed from the catalyst precursor and converting carbon dioxide into dialkyl carbonate.COis a colorless and odorless gas, which is one of the main gases that cause the greenhouse effect. COmainly comes from the combustion of a large number of carbon-containing fuels, including coal, oil, and natural gas. It is estimated that by 2100, the COcontent in the atmosphere will reach 500-1000 μL/L, which will cause the global average temperature to rise by 5.2° C., induce sea-level rise, and increase ocean ...

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Номер записи: 75
18-06-2015 дата публикации

Process for synthesis of ezetimibe and intermediates used in said process

Номер: US20150166479A1
Автор: Kuiling Ding, Xiaoming Wang, Zheng Wang
Принадлежит: Shanghai Institute of Organic Chemistry of CAS

A process for the production of ezetimibe and intermediates used in said process are disclosed. A kind of Morita-Baylis-Hillman adduct can be altered to chiral carboxylic acid derivatives of β-arylamino α-methylene with high activity and selectivity by means of ally lamination reaction, and the above carboxylic acid derivatives of β-arylamino α-methylene can be altered to the chiral intermediates of ezetimibe by means of simple conversion and further synthesized into the chiral drug ezetimibe. The synthesis route introduces chirality through the use of a chiral catalysis method, thereby avoiding the use of the chiral auxiliary oxazolidinone; and the route is economical and eco-friendly.

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Номер записи: 76
21-06-2018 дата публикации

METHOD FOR PRODUCING 1-(ACYLOXY)ALKYL CARBAMATE DERIVATIVE

Номер: US20180170880A1
Автор: ABE Yuzo, Ueda Tsuyoshi
Принадлежит:

A method for producing a 1-(acyloxy)alkyl carbamate derivative (III), using a fluorous alkyl carbonate derivative (I), and a fluorous alkyl carbonate derivative (I) and a method for producing the same. In the formula, Rrepresents C-Calkyl group or a C-Ccycloalkyl group, Rrepresents a C-Calkyl group or a hydrogen atom, and A represents a fluorous alkyl group (wherein the fluorous alkyl group represents a C-Calkyl group in which 40% or more of the hydrogen atoms are replaced by fluorine atoms). 2. The method of claim 1 , wherein the fluorous alkyl group is a 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3 claim 1 ,3-hexafluoro-2-propyl group.3. The method of claim 1 , wherein Ris an isopropyl group and Ris a methyl group.7. The compound of claim 6 , wherein the fluorous alkyl group is a 1 claim 6 ,1 claim 6 ,1 claim 6 ,3 claim 6 ,3 claim 6 ,3-hexafluoro-2-propyl group.8. The compound of claim 6 , wherein Ris an isopropyl group and Ris a methyl group.12. The method of claim 11 , wherein the fluorous alkyl group is a 1 claim 11 ,1 claim 11 ,1 claim 11 ,3 claim 11 ,3 claim 11 ,3-hexafluoro-2-propyl group.13. The method of claim 11 , wherein Ris an isopropyl group and Ris a methyl group.15Candida antarcticaCandida rugosaThemomyces lanuginosus.. The method of claim 14 , wherein the enzyme is lipase derived from claim 14 , lipase derived from claim 14 , or lipase derived from16Candida antarctica.. The method of claim 15 , wherein the enzyme is lipase derived from17. The method of claim 16 , wherein the enzyme is CHIRAZYME L-2 claim 16 ,C4.18. The method of claim 14 , wherein the inert solvent is a solvent comprising a buffer.19. The method of claim 14 , wherein the inert solvent is a solvent comprising a phosphate buffer.22. The method of claim 21 , wherein the solution comprises ethyl acetate.23. The method of claim 21 , wherein the crystallization is carried out under conditions of −5° C. to 5° C. The present invention relates to a novel method for producing a 1-(acyloxy) ...

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Номер записи: 77
30-06-2016 дата публикации

METHOD OF MAKING A TEMPLATING AGENT

Номер: US20160185709A1
Автор: BRYAN Richard Charles
Принадлежит:

A method for preparing 1-adamantyltrimethylammonium methylcarbonate or N,N-dimethyl-3,5-dimethylpiperidinium methylcarbonate is disclosed. The method comprises reacting dimethyl carbonate and 3,5-dimethylpiperidine or a 1-adamantylamine compound and in the presence of water in a sealed vessel at a temperature of from 80 to 200° C. The 1-adamantylamine compound is 1-adamantylamine, 1-adamantylmethylamine, or mixtures thereof. 1. A method for preparing 1-adamantyltrimethylammonium methylcarbonate , comprising reacting 1-adamantylamine compound in the presence of water in a sealed vessel at a temperature of from 80 to 200° C. , wherein the 1-adamantylamine compound is selected from the group consisting of 1-adamantylamine , 1-adamantylmethylamine , and mixtures thereof.2. The method of wherein the molar ratio of dimethyl carbonate: the 1-adamantylamine compound or is in the range of 5 to 20.3. The method of wherein the molar ratio of dimethyl carbonate:the 1-adamantylamine compound or 3,5 dimethylpiperidino is in the range of 8 to 14.4. The method of wherein the molar ratio of water: the 1-adamantylamine compound is in the range of 1 to 4.5. The method of wherein the reaction of the 1-adamantylamine compound with dimethyl carbonate is performed at a temperature in the range of 120-160° C.6. The method of wherein the 1-adamantylamine compound is 1-adamantylamine.7. The method of further comprising reacting the 1-adamantyltrimethylammonium methylcarbonate with calcium hydroxide in the presence of a water to produce 1-adamantyltrimethylammonium hydroxide.8. The method of wherein the molar ratio of calcium hydroxide: 1-adamantyltrimethylammonium methylcarbonate is in the range of 1.05 to 1.75.9. The method of wherein the reaction of 1-adamantyltrimethylammonium methylcarbonate with calcium hydroxide in the presence of water is performed at reflux.10. (canceled)11. (canceled) The invention relates to a method for preparing 1-adamantyltrimethyl-ammonium methylcarbonate and N ...

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Номер записи: 78
28-06-2018 дата публикации

Atropisomers and Methods of Altering Enantiomeric Excess

Номер: US20180179120A1
Автор: Ayad Suliman A., Hanson Kenneth, Posey Victoria A.
Принадлежит:

Provided herein are methods of altering enantiomeric excess. The methods may include irradiating an atropisomer that includes at least one chiral substituent to alter the enantiomeric excess of the atropisomer. The at least one chiral substituent may be removed following irradiation. 1. A method of altering enantiomeric excess , the method comprising:providing an atropisomer having an enantiomeric excess of 0% to 100%, wherein the atropisomer comprises at least one chiral substituent; andirradiating the atropisomer to alter the enantiomeric excess.3. The method of claim 2 , wherein Ris a C-Chydrocarbyl comprising at least one chiral atom.4. The method of claim 2 , wherein Ris an N-protected amino acid substituent.9. The method of claim 1 , wherein the enantiomeric excess is 0% to about 5% prior to the irradiating of the atropisomer claim 1 , and the atropisomer is a racemic atropisomer.10. The method of claim 1 , wherein the enantiomeric excess is about 95% to 100% prior to the irradiating of the atropisomer claim 1 , and the atropisomer is an enantiopure atropisomer.11. The method of claim 1 , wherein the providing of the atropisomer comprises:contacting an unsubstituted atropisomer with a chiral substituent precursor to form the atropisomer,wherein the unsubstituted atropisomer comprises a hydroxyl functional group, and the chiral substituent precursor comprises an ester functional group or an acyl halide functional group.12. The method of claim 11 , wherein the chiral substituent precursor comprises an N-protected amino acid.16. The method of claim 1 , wherein the irradiating of the atropisomer comprises exposing the atropisomer to electromagnetic radiation comprising one or more wavelengths of about 10 nm to about 900 nm.17. The method of claim 1 , wherein the atropisomer is contacted with a base during at least a portion of the irradiating of the atropisomer.19. The atropisomer of claim 18 , wherein Ris an N-protected amino acid substituent. This application ...

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Номер записи: 79
28-06-2018 дата публикации

Alpha/alpha-prime-alkoxylated glycerol linear carbonic esters

Номер: US20180179143A1
Автор: Leising Frederic, MOULOUNGUI Zephirin
Принадлежит:

Alpha/alpha-prime/alkoxylated glycerol linear carbonic esters have formula (VI): 4. The compound according to claim 1 , wherein Qrepresents the group —CH—CH—NH.5. The compounds according to claim 2 , wherein Qrepresents the group —CH—CH—NH.6. The compounds according to claim 3 , wherein Qrepresents the group —CH—CH—NH.9. A composition comprising at least one α/α′-alkoxylated glycerol linear carbonic ester according to . The applicant is a Divisional Application of U.S. application Ser. No. 14/655,690, filed Jun. 25, 2015, and published as US 2015/0329468 A1 on Nov. 19, 2015, which was the U.S. National Phase Application under 35 U.S.C. § 371 of International Application No. PCT/FR2013/053225, filed Dec. 20, 2013, designating the U.S. and published as WO 2014/102495 A1 on Jul. 3, 2014, which claimed the benefit of French Application No. FR 12.62796, filed Dec. 26, 2012. Any and all applications for which a foreign or a domestic priority is claimed is/are identified in the Application Data Sheet filed herewith and is/are hereby incorporated by reference in their entirety under 37 C.F.R. § 1.57.The invention concerns a method for synthesizing novel compounds called α/α′-alkoxylated (alpha/alpha-prime alkoxylated) glycerol linear carbonic esters, in particular in the form of oligomers of α/α′-alkoxylated glycerol linear carbonic esters. The invention also relates to the novel compounds thus obtained, to a composition comprising at least one such novel α/α′-alkoxylated glycerol linear carbonic ester and to the uses of these novel compounds.It is known that non-alkoxylated high molecular weight polymers can be produced from 6-membered cyclic carbonates in the presence of anionic initiators such as metal alkoxides (Li, K, alkaline carbonate, metal alkyl, metal alcoholate).A cationic polymerization method is known of a 6-membered cyclic carbonate carrying a pendent allyl group linked to the carbonate ring via an ether bridge. To contain a pendent ether bridge, the monomer ...

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Номер записи: 80
13-06-2019 дата публикации

PROCESS FOR PRODUCING CHLOROFORMATE COMPOUND

Номер: US20190177262A1
Автор: FUNABASHI Makoto, MITSUDA Masaru, NISHIYAMA Akira, Takeda Toshihiro, Yasukouchi Hiroaki
Принадлежит: KANEKA CORPORATION

The present invention provides a method for safely producing a large amount of chloroformate compound with high yield. The chloroformate compound can be produced by mixing and reacting a solution of triphosgene, an amine and an alcohol compound in a flow reactor. The chloroformate compound can also be produced by mixing and reacting a solution of triphosgene with a solution comprising an amine and an alcohol compound in a flow reactor. The amine is preferably tributylamine, and preferably used in an amount of 0.8 to 3 equivalents relative to an amount of the alcohol compound. 1: A process for producing a chloroformate compound , comprising:mixing and reacting a first solution comprising triphosgene with a second solution comprising an amine compound and an alcohol compound in a flow reactor.2: The process according to claim 1 , wherein the amine compound is tributylamine.3: The process according to claim 1 , wherein an amount of the amine compound is 0.8 to 3 equivalents relative to an amount of the alcohol compound.4: The process according to claim 1 , wherein each of the first solution and the second solution comprises a solvent selected from the group consisting of an aromatic hydrocarbon solvent claim 1 , an ether solvent claim 1 , and a combination thereof.5: The process according to claim 1 , wherein each of the first solution and the second solution comprises a solvent selected from the group consisting of toluene claim 1 , tetrahydrofuran claim 1 , and a combination thereof.6: The process according to claim 1 , wherein an amount of the triphosgene is 0.3 to 1 equivalent relative to an amount of the alcohol compound.7: The process according to claim 1 , wherein a flow channel of the flow reactor has a cross-sectional area of 10 mmto 30 cm.8: The process according to claim 1 , wherein a reaction temperature in a flow channel of the flow reactor is 60° C. or lower.9: The process according to claim 1 , wherein a retention time in a flow channel of the flow ...

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Номер записи: 81
13-06-2019 дата публикации

FLUORINATED CARBONATES COMPRISING DOUBLE BOND-CONTAINING GROUPS, METHODS FOR THEIR MANUFACTURE AND USES THEREOF

Номер: US20190177264A1
Автор: BOMKAMP Martin, KIM Hag-Soo
Принадлежит:

Fluorinated carbonates comprising double-bond containing groups were prepared and their use as solvent additives or solvents in lithium ion batteries, lithium air batteries, lithium sulphur batteries and supercapacitors is described. Preferred compounds contain at least one alkenyl or at least one (hetero)aryl group. 1. A compound of general formula (I) ,{'br': None, 'sup': 1', '2', '3, 'RRCF—O—C(O)—O—R'}{'sup': '1', 'wherein Ris methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, isopentyl or hexyl,'}{'sup': '2', 'Ris H; and'}{'sup': '3', 'Ris an alkenyl group.'}2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. The compound according to wherein R1 is methyl claim 1 , R2 is H claim 1 , R3 is allyl and the compound is (1-fluoroethyl)allyl carbonate.7. (canceled)8. A method for the manufacture of a compound of general formula (I) claim 1 ,{'br': None, 'sup': 1', '2', '3, 'RRCF—O—C(O)—O—R'} {'br': None, 'sup': 1', '2, 'RRCF—O—C(O)F'}, 'the method comprising a step of reacting a fluoroformate of general formula (II),'}{'sup': '3', 'with an alcohol of general formula (III), R—OH;'}{'sup': '1', 'wherein Ris H, F, alkyl, cycloalkyl, alkylene-aryl, or alkylene-heteroaryl;'}{'sup': '2', 'wherein Ris H, and'}{'sup': '3', 'wherein Ris a double bond-containing group.'}9. A method for the manufacture of a compound of general formula (I) claim 1 ,{'br': None, 'sup': 1', '2', '3, 'RRCF—O—C(O)—O—R'}{'sup': 1', '2, 'claim-text': {'br': None, 'sup': 1', '2, 'RRCF—O—C(O)X'}, 'the method comprising a first step of reacting phosgene or a phosgene analogue with a compound of the general formula (IV) RRCF—OH to form an intermediate of the general formula (V)'}{'sup': '3', 'and a second step of reacting the intermediate of the general formula (V) with a compound of the general formula (VI) R—OH;'}{'sup': '3', 'claim-text': {'br': None, 'sup': '3', 'R—O—C(O)X'}, 'or comprising a first step of reacting phosgene or a phosgene analogue with a compound of the general formula (VI) R— ...

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Номер записи: 82
09-07-2015 дата публикации

Fluorinated carbonyl compounds comprising a triple bond, methods for their manufacture and uses thereof

Номер: US20150191423A1
Автор: Dirk Seffer, Martin Bomkamp
Принадлежит: SOLVAY SA

Fluorinated carbonyl compounds comprising a triple bond were prepared and their use as solvent additives or solvents in lithium ion batteries, lithium air batteries, lithium sulphur batteries and supercapacitors is described. Preferred compounds contain at least one nitrile or at least one alkynyl group.

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Номер записи: 83
04-06-2020 дата публикации

Process for preparing alkanediol and dialkyl carbonate

Номер: US20200172466A1
Автор: Frederik Hendrik Van Der Steen, Garo Garbis Vaporciyan, Henri PREISING, Silke Eva Sabine LEONHARDT, Wolfgang Dirk LOSE
Принадлежит: Shell Oil Co

The invention relates to a process for the preparation of an alkanediol and a dialkyl carbonate comprising reacting an alkylene carbonate and an alkanol in the presence of a catalyst, wherein the catalyst is aluminum phosphate.

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Номер записи: 84
18-09-2014 дата публикации

PROCESS FOR PURIFICATION OF DIPHENYL CARBONATE FOR THE MANUFACTURING OF HIGH QUALITY POLYCARBONATE

Номер: US20140275473A1
Автор: Fernandez Ignacio Vic, Lyakhovych Mykhaylo, Nadal Sergio Ferrer
Принадлежит:

A process for purifying a diaryl carbonate, comprises introducing an aqueous stream to a diaryl carbonate stream that comprises a metal contaminant, wherein the aqueous stream reacts with the metal contaminant to form a precipitate; wherein introducing the aqueous stream to the diaryl carbonate stream results in introducing 100 to 10,000 ppm water based on the total composition of the diaryl carbonate stream and the aqueous stream; removing the precipitate via one or both of a separation column and a filter to result in a purified diaryl carbonate. 1. A process for purifying a diaryl carbonate , comprising:introducing an aqueous stream to a diaryl carbonate stream that comprises a metal contaminant, wherein the diaryl carbonate stream comprises greater than or equal to 70 wt % diaryl carbonate based on the total weight of the diaryl carbonate stream, wherein the aqueous stream reacts with the metal contaminant to form a precipitate; wherein introducing the aqueous stream to the diaryl carbonate stream results in introducing 100 to 10,000 ppm water based on the total composition of the diaryl carbonate stream and the aqueous stream;removing the precipitate via one or both of a separation column and a filter to result in a purified diaryl carbonate; removing a bottom stream comprising the precipitate from the separation column;', 'removing a top stream from the separation column;', 'directing a top stream first portion into the separation column and collecting a top stream second portion, wherein the top stream second component comprises the purified diaryl carbonate., 'wherein when the removing utilizes the separation column, the process further comprises2. The process of claim 1 , wherein the removing utilizes the separation column claim 1 , and wherein the introducing occurs before the diaryl carbonate stream enters the separation column.3. The process of claim 1 , wherein the removing utilizes the separation column claim 1 , and wherein the introducing occurs ...

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Номер записи: 85
18-09-2014 дата публикации

PROCESS FOR REMOVING AN ALKANOL IMPURITY FROM AN ORGANIC CARBONATE STREAM

Номер: US20140275600A1
Автор: VAN DER HEIDE Evert, VAPORCIYAN Garo Garbis, Vrouwenvelder Cornelis Leonardus Maria
Принадлежит: SHELL OIL COMPANY

The invention relates to a process for removing an alkanol impurity from a stream containing an organic carbonate and the alkanol impurity, comprising contacting the stream with a catalyst to effect reaction of the alkanol impurity with the organic carbonate. 1. Process for making a diaryl carbonate , comprising contacting , in the presence of a transesterification catalyst , an aryl alcohol with a stream containing a dialkyl carbonate from which stream an alkanol impurity has been removed in accordance with a process for removing an alkanol impurity from a stream containing an organic carbonate and the alkanol impurity , comprising contacting the stream with a catalyst to effect reaction of the alkanol impurity with the organic carbonate ,wherein the organic carbonate is a di(C1-C5)alkyl carbonate and the alkanol impurity is an ether alkanol, andwherein the stream containing an organic carbonate and the alkanol impurity is obtained by a process for the preparation of a di(C1-C5)alkyl carbonate and an alkanediol comprising:(a) reacting an alkylene carbonate and an alkanol in the presence of a transesterification catalyst to obtain a product mixture containing unconverted alkylene carbonate, unconverted alkanol, di(C1-C5)alkyl carbonate, alkanediol and an alkanol impurity;(b) separating unconverted alkylene carbonate and alkanediol from the product mixture to obtain a top stream containing unconverted alkanol, di(C1-C5)alkyl carbonate and the alkanol impurity;(c) recovering the alkanediol; and(d) separating unconverted alkanol from the top stream containing unconverted alkanol di(C1-c5)alkyl carbonate and the alkanol impurity obtained in step (b) to obtain a bottom stream containing di(C1-C5)alkyl carbonate and the alkanol impurity,which process for the preparation of a di(C1-C5)alkyl carbonate and an alkanediol further comprises(e) contacting the bottom stream containing di(C1-C5)alkyl carbonate and the alkanol impurity obtained in step (d) with a catalyst to effect ...

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Номер записи: 86
05-07-2018 дата публикации

PROCESS FOR DEGREASING A CHEMICAL PLANT

Номер: US20180187315A1
Автор: Den Boestert Johannes Leendert Willem Cornelis, WIJNANS Sanne
Принадлежит:

A process for degreasing a chemical plant is disclosed. The vessels and process lines are rinsed with a solvent comprising at least 50 wt % dialkyl carbonate, based upon the weight of the solvent. 1. A process for degreasing a chemical plant comprising vessels and process lines connecting the vessels , the process comprising a step of rinsing the vessels and process lines with a solvent , wherein the solvent comprises at least 50 wt % dialkyl carbonate , based upon the weight of the solvent.2. The process according to claim 1 , wherein the solvent comprises at least 90 wt % dialkyl carbonate.3. The process according to claim 1 , wherein the solvent is pure dialkyl carbonate.4. The process according to claim 1 , wherein the dialkyl carbonate is dimethyl carbonate or diethyl carbonate.5. The process according to claim 1 , wherein the chemical plant is a plant for preparing diaryl carbonate from a dialkyl carbonate and an aryl alcohol.6. The process according to claim 5 , wherein the dialkyl carbonate in the solvent is the same dialkyl carbonate as used in the process for preparing the diaryl carbonate.7. The process according to claim 1 , wherein the chemical plant is a plant for preparing diphenyl carbonate from diethyl carbonate and phenol or from dimethyl carbonate and phenol.8. The process according to claim 7 , wherein the solvent is pure diethyl carbonate or pure dimethyl carbonate.9. A process for preparing diaryl carbonate from a dialkyl carbonate and an aryl alcohol in a chemical plant comprising vessels and process lines connecting the vessels claim 7 , comprising a step of rinsing the vessels and process lines with a solvent claim 7 , wherein the solvent comprises at least 50 wt % dialkyl carbonate claim 7 , based upon the weight of the solvent claim 7 , wherein this step is carried out prior to reaction of the dialkyl carbonate and the aryl alcohol.10. A process for preparing diphenyl carbonate from diethyl carbonate and phenol in a chemical plant ...

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Номер записи: 87
20-06-2019 дата публикации

PROCESS FOR PREPARING AN EPOXIDATION CATALYST

Номер: US20190184387A1
Автор: Kulkarni Apoorva, McKeen John C., Santos Castro Vera P., Sussman Victor J., Syed Mohmed A., Todd Clifford S., Tway Cathy L.
Принадлежит:

A process for preparing a silver-containing catalyst for the selective oxidation of ethylene to ethylene oxide including the steps of: (a) providing a multimodal support, (b) preparing an impregnation solution comprising a silver component, (c) impregnating, at least once, the multimodal support of step (a) with the silver-containing impregnation solution of step (b) to form an impregnated support; (d) subjecting the impregnated multimodal support from step (c) to a removal means, such as a centrifuge, at least once, for a time sufficient to remove impregnated silver impregnation solution from the multimodal support and to control the amount of silver in the pores of the multimodal support by selectively removing impregnated silver impregnation solution from a set of larger pores in the multimodal support; (e) roasting, at least once, the multimodal support after the step (d); (f) optionally, repeating the impregnation step (c), (g) optionally, repeating the centrifugation step (d), and (h) optionally, repeating the calcination step (e). 1. A process for preparing a silver-containing catalyst for the epoxidation of olefins comprising the steps of:(a) providing a porous multimodal support having at least a first set of support pores of a first size range and at least a second set of support pores of a second size range wherein the second size range of the second set of support pores is smaller than the first size range of the first set of support pores;(b) providing a first silver-containing impregnation solution for impregnating the first silver-containing impregnation solution into the at least first set of support pores and the at least second set of support pores of the porous multimodal support;(c) impregnating, one or more times, the porous multimodal support with the first silver-containing impregnation solution from step (b) to provide the porous multimodal support with a first amount of silver-containing impregnation solution; and(d) selectively removing at ...

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Номер записи: 88
20-06-2019 дата публикации

METHOD FOR PRODUCING DIALKYLDICARBONATES USING TERTIARY AMINES AS CATALYSTS

Номер: US20190185407A1
Автор: HOFMANN Christoph, VOGL Erasmus
Принадлежит: LANXESS DEUTSCHLAND GMBH

The present invention relates to a method for preparing dialkyl dicarbonates from the corresponding alkyl chloroformates using specific tertiary amines as catalysts. 2. The method as claimed in claim 1 , wherein the at least one tertiary amine of the formula (I) comprises at least one tertiary alkylamine of the formula (I) where:{'sup': '1', 'R=methyl, ethyl, propyl or butyl,'}{'sup': '2', 'sub': 17', '20, 'R=C-C-alkyl, and'}{'sup': '3', 'sub': 2', '3', 'n', '2', '3', '2', '2', '2', 'n', '2', '2', '2, 'R=—[CH—CH(CH)—O]—[CH—CH(CH)]—OH or —[CH—CH—CH—O]—[CH—CH—CH]—OH where n=6 to 10.'}3. The method as claimed in claim 2 , wherein:{'sup': '1', 'R=methyl,'}{'sup': '2', 'sub': '18', 'R=straight-chain C-alkyl, and'}{'sup': '3', 'sub': 2', '2', 'n', '2', '3, 'R=—[CH—CH(CH)—O]—[CH—CH(CH)]—OH where n=8.'}4. The method as claimed in claim 1 , wherein:the catalyst comprises a mixture of two or more different tertiary amines of the formula (I), and{'sup': '3', 'sub': 2', '3', 'n', '2', '3, 'Ris —[CH—(CH(CH))—O]—[CH—(CH(CH))]—OH where n =8, 9, 10 or 11.'}5. The method as claimed in claim 1 , wherein the catalyst comprises a mixture of the tertiary amines of the formula (I) claim 1 , comprising various radicals Rthat are straight-chain or branched C- claim 1 , C- claim 1 , C- claim 1 , C- claim 1 , C- or C-alkyl.7. The method as claimed in claim 1 , wherein the alkali metal hydroxides claim 1 , alkaline earth metal hydroxides and/or carbonates are in the form of aqueous solutions.8. The method as claimed in claim 1 , wherein the at least one water-immiscible organic solvent is selected claim 1 , from the group consisting of aliphatic and aromatic hydrocarbons claim 1 , chlorinated hydrocarbons claim 1 , dialkyl carbonates claim 1 , and water-immiscible ethers and esters.9. The method as claimed in claim 1 , wherein the contacting is done in the presence of 0.001 to 0.5 mol % of the tertiary amines of the formula (I) is claim 1 , based on the alkyl haloformates.10. The method as ...

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Номер записи: 89
20-06-2019 дата публикации

METHOD FOR PRODUCING AROMATIC NITRILE COMPOUND AND METHOD FOR PRODUCING CARBONATE ESTER

Номер: US20190185408A1
Автор: Harada Hidefumi, Isahaya Yoshinori, Liu Hongyu, NAKAGAWA Yoshinao, NAMIKI Yasuki, Shinkai Yousuke, Suzuki Kimihito, TAMURA Masazumi, TOMISHIGE Keiichi
Принадлежит:

Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of dehydration reaction and significantly improves the reaction speed at a pressure close to normal pressure. Furthermore, the above-described production method is applied to a carbonate ester production method to provide a method for producing carbonate ester efficiently. The above-described objects are achieved by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses diphenylether. 1. A method for producing an aromatic nitrile compound , comprising:a dehydration reaction of dehydrating an aromatic amide compound;wherein the dehydration reaction uses diphenylether.2. The method for producing an aromatic nitrile compound according to claim 1 , wherein the dehydration reaction is performed in a state where the diphenylether is boiled.3. The method for producing an aromatic nitrile compound according to claim 2 , wherein the diphenylether has a boiling point that is higher than the boiling point of the aromatic nitrile compound and the boiling point of water and lower than the boiling point of the aromatic amide compound.4. The method for producing an aromatic nitrile compound according to claim 1 , wherein the dehydration reaction is performed at a reduced pressure.5. The method for producing an aromatic nitrile compound according to claim 1 , wherein a reaction solution of the dehydration reaction has a temperature that is 170° C. or higher and lower than 230° C.6. The method for producing an aromatic nitrile compound according to claim 1 , wherein the aromatic amide compound contains ...

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Номер записи: 90
21-07-2016 дата публикации

Heterogeneous catalysts for the transesterification of aromatic alcohols; and methods of making and use thereof

Номер: US20160207872A1
Автор: Balamurali Krishna RAMACHANDRAN NAIR, Edouard Mamedov, Jonathan Banke, Neeta Kulkarni, Pamela Lawyer-Harvey
Принадлежит: SABIC Global Technologies BV

Disclosed herein are new mixed metal oxide catalysts suitable as heterogeneous catalysts for catalyzing the transesterification process of aromatic alcohols with a dialkyl carbonate to form aromatic carbonates. The heterogeneous catalyst comprises a combination of two, three, four, or more oxides of Mo, V, Nb, Ce, Cu, Sn, or an element selected from Group IA or Group IIA of the periodic table.

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Номер записи: 91
04-07-2019 дата публикации

Method for preparing dialkyl carbonate

Номер: US20190202770A1
Автор: Hsi-Yen Hsu, Man-Yin Lo, Yen-Chih Chen
Принадлежит: Industrial Technology Research Institute ITRI

A method for preparing dialkyl carbonate is provided. The preparation method includes the following steps. An alcohol compound, carbon dioxide and a catalyst are mixed to form a mixing solution. Organic acid is added to the mixing solution to carry out a synthesis reaction of dialkyl carbonate. The alcohol compound includes methanol, ethanol, propanol or butanol. The catalyst includes cerium oxide, zirconium oxide, titanium oxide, lanthanum oxide or a combination thereof. The organic acid includes formic acid, acetic acid, propionic acid, butyric acid, valeric acid or a combination thereof.

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Номер записи: 92
27-07-2017 дата публикации

Fluorinated carbonates comprising two oxygen bearing functional groups

Номер: US20170214088A1
Автор: Dirk Seffer, Martin Bomkamp
Принадлежит: SOLVAY SA

Fluorinated carbonates comprising two oxygen bearing functional groups, methods for the preparation thereof, and their use as solvent or solvent additive for lithium ion batteries and supercapacitors are disclosed.

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Номер записи: 93
11-08-2016 дата публикации

Alkyl Tin Compound

Номер: US20160228863A1
Автор: Miyake Nobuhisa, Nishiyama Budianto, Okubo Atsushi, Shinohata Masaaki
Принадлежит: ASAHI KASEI CHEMICALS CORPORATION

An alkyl tin compound having an alkyl group bonded to a tin atom, wherein the alkyl group is a branched alkyl or cyclic group-substituted alkyl group, the branched alkyl group being an alkyl group branched at at least one carbon atom of the first to third carbon atoms counting from the tin atom, and the cyclic group-substituted alkyl group being an alkyl group having a cyclic group bonded at at least one carbon atom of the first to third carbon atoms counting from the tin atom. 1. An alkyl tin compound having an alkyl group bonded to a tin atom ,wherein the alkyl group is a branched alkyl or cyclic group-substituted alkyl group,the branched alkyl group being an alkyl group branched at at least one carbon atom of the first to third carbon atoms counting from the tin atom, andthe cyclic group-substituted alkyl group being an alkyl group having a cyclic group bonded at at least one carbon atom of the first to third carbon atoms counting from the tin atom.2. The alkyl tin compound according to claim 1 , which is an alkyl tin compound having one to three branched alkyl groups bonded to one tin atom claim 1 ,the valency of the tin atom being tetravalent.3. The alkyl tin compound according to claim 2 ,wherein the branched alkyl group is a C4-18 branched alkyl group, anda C1-8 alkoxy group is further bonded to the tin atom.4. The alkyl tin compound according to claim 2 , which is a dialkyl tin alkoxide or a tetraalkyldialkoxydistannoxane.6. The alkyl tin compound according to claim 2 , which is a trialkyl tin compound.8. The alkyl tin compound according to claim 3 , wherein the alkoxy group is an alkoxy group selected from among n-butyloxy claim 3 , isobutyloxy claim 3 , sec-butyloxy and C5-8 alkoxy groups.9. The alkyl tin compound according to claim 3 , wherein the alkoxy group is a branched alkoxy group.10. The alkyl tin compound according to claim 3 , which is an alkyl tin alkoxide obtained from an alkyl tin carboxylate claim 3 , alkyl tin oxide claim 3 , alkyl tin oxide ...

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Номер записи: 94
09-08-2018 дата публикации

Synthesis of Methyl Carbamate and Dimethyl Carbonate (DMC) in Presence of Stripping with Inert Gas or Superheated Vapours and a Reactor for the Same

Номер: US20180222852A1
Автор: KELKAR Ashutosh Anant, KINAGE Anil Kisan, RANADE Vivek Vinayak, RANE Vilas Hari, ROY Lalita Sanjib, SHINGOTE Savita Kiran
Принадлежит:

The invention relates to synthesis of methyl carbamate (MC) and dimethyl carbonate (DMC) in presence of stripping inert gas or superheated methanol vapors using packed column reactor and bubble column reactor. 1. A horizontal sectionalized bubble column reactor for synthesis of methyl carbamate and dimethyl carbonate (DMC) comprising:a. a cylindrical bubble column reactor with single or multiple compartments to receive liquid reactant feed comprising of urea and methanol or methyl carbamate and methanol through inlet ports for a reaction to occur;b. a gas distributor chamber located within the cylindrical bubble column reactor comprising a plate intersecting a cylinder of the cylindrical bubble column reactor with or without an angle to an axis of the cylinder;c. single or multiple inlet ports fitted to the gas distributor chamber for distributing gas;d. single or multiple inlet ports fitted with a constant pressure regulator, single or multiple gas/vapor outlet ports fitted with a back pressure regulator for gaseous phase, wherein, a pressure difference of 10 psi is maintained to ensure positive flow of inert gas into the cylindrical bubble column reactor;e. single or multiple liquid outlet ports with an in-line filter fitted to the cylindrical bubble column reactor for liquid phase withdrawal;f. a heat transfer device fitted to the cylindrical bubble column reactor for maintaining temperature of the reaction;g. a condenser and a gas-liquid separator fitted to the outlet port(s) wherein a product in vapor form is condensed and separated from liquid components;h. an outlet for condensate and an outlet for non-condensate connected to the gas-liquid separator.2. The horizontal sectionalized bubble column reactor as claimed in claim 1 , wherein the cylindrical bubble column reactor further comprises an expanded slurry bed of solid catalyst particles suspended in a suspension liquid or in a packed bed of solid catalyst.3. The horizontal sectionalized bubble column ...

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Номер записи: 95
18-08-2016 дата публикации

ANTICANCER AGENTS AND PROCESS OF MAKING THEREOF

Номер: US20160237012A1
Автор: CHEN Chih-Ming, Liu Sheng-Yung
Принадлежит:

Provided herein are compositions and processes of making of anticancer compounds useful for cancer treatments. These cyclohexenone compounds show an unexpected result against certain cancer cells compared to their known analogs. 3. The compound of claim 1 , wherein R is a hydrogen claim 1 , C(═O)CH claim 1 , C(═O)CH claim 1 , or C(═O)CH.4. The compound of claim 1 , wherein each of R claim 1 , Rand Rindependently is hydrogen claim 1 , methyl claim 1 , ethyl claim 1 , propyl claim 1 , butyl claim 1 , pentyl claim 1 , hexyl claim 1 , or heptyl.5. The compound of claim 1 , wherein each of Rand Rindependently is (CHCH═C(CH)(CH))—R.6. The compound of claim 5 , wherein Ris H claim 5 , NH claim 5 , NHCH claim 5 , N(CH) claim 5 , OCH claim 5 , OCH claim 5 , C(═O)CH claim 5 , C(═O)CH claim 5 , C(═O)OCH claim 5 , C(═O)OCH claim 5 , C(═O)NHCH claim 5 , C(═O)NHCH claim 5 , C(═O)NH claim 5 , OC(═O)CH claim 5 , OC(═O)CH claim 5 , OC(═O)OCH claim 5 , OC(═O)OCH claim 5 , OC(═O)NHCH claim 5 , OC(═O)NHCH claim 5 , or OC(═O)NH.7. The compound of claim 5 , wherein Ris CHC(CH)OH claim 5 , CHC(CH)OCH claim 5 , CHCOOH claim 5 , CHCOOH claim 5 , CHOH claim 5 , CHOH claim 5 , CHPh claim 5 , CHPh claim 5 , CHCH═C(CH)(CHO) claim 5 , CHCH═C(CH)(C(═O)CH) claim 5 , 5 or 6-membered lactone claim 5 , aryl claim 5 , or glucosyl claim 5 , wherein 5 or 6-membered lactone claim 5 , aryl claim 5 , and glucosyl are optionally substituted with one or more substituents selected from NRR claim 5 , OR claim 5 , OC(═O)R claim 5 , C(═O)OR claim 5 , C(═O)R claim 5 , C(═O)NRR claim 5 , C-Calkyl claim 5 , C-Calkenyl claim 5 , C-Calkynyl claim 5 , C-Ccycloalkyl claim 5 , and C-Chaloalkyl.8. The compound of claim 7 , wherein Ris C—C alkyl optionally substituted with one or more substituents selected from NRR claim 7 , OR claim 7 , OC(═O)R claim 7 , C(═O)OR claim 7 , C(═O)R claim 7 , C(═O)NRR claim 7 , C-Calkyl claim 7 , C-Calkenyl claim 7 , C-Calkynyl claim 7 , C-Ccycloalkyl claim 7 , and C-Chaloalkyl.9. The ...

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Номер записи: 96
18-08-2016 дата публикации

Method for Preparing Aromatic Carbonate

Номер: US20160237019A1
Автор: KIM Dong Baek, KWON O Sung, LEE Chang Hoon, LEE Yeon Ju, YANG Il Hwan
Принадлежит:

A method for preparing an aromatic carbonate, of the present invention, comprises the steps of: (A) preparing a reaction mixture containing an aliphatic carbonate by reacting an organometallic compound and carbon dioxide; and (B) preparing an aromatic carbonate by reacting the reaction mixture and an aromatic alcohol. The method for preparing an aromatic carbonate allows an aromatic carbonate to be economically prepared in a high yield by using carbon dioxide as a carbonyl supply source. 1. A method for preparing an aromatic carbonate , comprising:(A) preparing a reaction mixture containing an aliphatic carbonate by reacting an organometallic compound with carbon dioxide; and(B) preparing an aromatic carbonate by reacting the reaction mixture with an aromatic alcohol.2. The method according to claim 1 , wherein the aliphatic carbonate in the reaction mixture is reacted with the aromatic alcohol without being separated.3. The method according to claim 1 , wherein the organometallic compound contains a metal-oxygen-carbon bond.5. The method according to claim 1 , wherein preparing an aliphatic carbonate (step (A)) is performed at about 130° C. to about 230° C. at a carbon dioxide pressure of about 10 bar to about 200 bar.6. The method according to claim 1 , wherein preparing an aromatic carbonate (step (B)) is performed at about 100° C. to about 250° C. at about 1 bar to about 30 bar.7. The method according to claim 1 , wherein preparing an aliphatic carbonate (step (A)) is performed in the presence of an alcohol containing a linear or branched Cto Caliphatic hydrocarbon group or an alcohol containing a cyclic Cto Caliphatic hydrocarbon group. The present invention relates to a method for preparing an aromatic carbonate. More particularly, the present invention relates to a method for preparing an aromatic carbonate, which can economically prepare an aromatic carbonate in high yield using carbon dioxide as a carbonyl source.An aromatic carbonate is an eco-friendly ...

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Номер записи: 97
17-08-2017 дата публикации

METHOD OF MELT POLYMERIZING POLYCARBONATE AND THE POLYCARBONATE MADE THEREFROM

Номер: US20170233328A1
Автор: Eijsbouts Paulus Johannes Maria, Fernandez Ignacio Vic
Принадлежит: Sabic Global Technologies B.V.

In an embodiment, a method for producing an aryl alkyl carbonate can comprise: reacting methanol with a diaryl carbonate in the presence of a catalyst to form a mixture comprising an aryl alkyl carbonate and a hydroxy compound, wherein the methanol is in an acetone monomer mixture comprising acetone and at least one of diaryl carbonate and dihydroxy compound; separating the aryl alkyl carbonate from the mixture. 1. A method for removing methanol present in an acetone monomer mixture , comprising:reacting the methanol with a diaryl carbonate in the presence of a catalyst to form an aryl alkyl carbonate and a hydroxy compound, wherein the acetone monomer mixture comprises acetone and at least one of the diaryl carbonate and a dihydroxy compound; andseparating the aryl alkyl carbonate.2. The method of claim 1 , further comprising:reacting the acetone with a second hydroxy compound to produce the dihydroxy compound.3. The method of claim 2 , wherein the hydroxy compound and the second hydroxy compound are the same material.4. The method of claim 2 , wherein the hydroxy compound and the second hydroxy compound are phenol; and wherein the dihydroxy compound is bisphenol A.5. A method for producing a polycarbonate by melt polymerization claim 2 , comprising:adding an acetone, a diaryl carbonate, and a dihydroxy compound to a melt polymerization unit, wherein the acetone is added as an acetone monomer mixture to the melt polymerization unit with the a monomer comprising the diaryl carbonate and/or the dihydroxy compound;melt polymerizing the dihydroxy compound and the diaryl carbonate to produce the polycarbonate;recovering a recovered acetone from the melt polymerization unit;adding the recovered acetone to a reaction vessel, wherein the recovered acetone in the reaction vessel has one or more of a methanol content of less than or equal to 100 ppm, and a ketone and aldehyde content of less than or equal to 100 ppm both based on a total weight of the recovered acetone; ...

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Номер записи: 98
26-08-2021 дата публикации

Method for producing aromatic nitrile compound and method for producing carbonate ester

Номер: US20210261496A1
Автор: Hidefumi Harada, Keisuke Shimokawa, Ryotaro Umezu, Takehiko Isobe
Принадлежит: Mitsubishi Gas Chemical Co Inc

The present invention provides a method for producing an aromatic nitrile compound, the method comprising a dehydration reaction wherein a desired compound can be selectively obtained with high yield while suppressing the generation of by-products during the regeneration of an aromatic amide compound into the corresponding aromatic nitrile compound. In addition, the present invention realizes a method for efficiently producing a carbonate ester by applying the abovementioned production method to a method for producing a carbonate ester. The above are achieved by means of a method for producing an aromatic nitrile compound involving a dehydration reaction wherein an aromatic amide compound is dehydrated, the method having a contact step for bringing the aromatic amide compound into contact with a catalyst in a gas phase during the dehydration reaction.

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Номер записи: 99
23-07-2020 дата публикации

METHOD FOR PRODUCING FLUORINE-CONTAINING DIALKYL CARBONATE COMPOUNDS

Номер: US20200231530A1
Автор: CHOI Yeong Sup, Hong Myeng Chan, KWAK Jong Yun, KWON Da Eun
Принадлежит: SAMHWA PAINTS INDUSTRIES CO., LTD.

The present invention relates to a method for producing fluorine-containing dialkyl carbonate compounds, which are suitable as non-aqueous solvents for non-aqueous electrolytes used in secondary batteries. When an alkyl chloroformate and an alcohol are reacted in the presence of an ether-containing imidazole derivative base, the reaction can be carried out at room temperature as compared with the prior art, and the products can be separated within a short time from the reactants. This is an economical process, and according to the present invention, it is possible to obtain alkyl carbonates containing fluorine atoms simply and without difficulty in the removal of solvents, salts formed during the reaction, and by-products. Accordingly, the production method of the present invention can be effectively applied to the production of fluorine-containing dialkyl carbonates used for various applications such as electrolytes of lithium ion secondary batteries, medicines and fine chemicals, pesticides, polar aprotic solvents, synthetic lubricating oils and the like. 2. The method for producing a dialkyl carbonate of claim 1 , wherein the reaction temperature is in the range of 10 to 35° C.3. The method for producing a dialkyl carbonate of claim 1 , wherein the separation of the reaction product from the reactants is performed by layer separation.4. The method for producing a dialkyl carbonate of claim 1 , wherein the base is 1-(2-ethoxyethyl) imidazole.5. The method for producing a dialkyl carbonate of claim 1 , wherein the reaction time is less than 6 hours.6. The method for producing a dialkyl carbonate of claim 1 , wherein the mixing molar ratio of the base claim 1 , the alkyl chloroformate and the alcohol is 1:1:1. The present invention relates to a method for producing fluorine (F)-containing dialkyl carbonate compounds. More specifically, the present invention relates to a method for producing fluorine-containing dialkyl carbonate compounds by reacting an alkyl ...

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Номер записи: 100