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WO/2022/149357A1 |
The purpose of the present invention is to provide a specific method whereby it is possible to use a cyclic carbonate and an aliphatic monohydric alcohol as starting materials to industrially produce dialkyl carbonates and diols with hig...
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WO/2022/113847A1 |
Provided is a polycarbonate resin decomposition method by which a polycarbonate resin can be decomposed with high reactivity even under mild and low-environmental-load conditions. Moreover, provided is an alkyl aryl carbonate production ...
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WO/2022/092176A1 |
Provided is a production method for a bisphenol or the like by using a chemical recycling method that is moderate, has a small environmental load, and enables efficient degradation of a polycarbonate resin. Provided is a method for produ...
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WO/2022/065133A1 |
The purpose of the present invention is to provide a method by which a carbonate compound can be produced safely and efficiently without using chloroform. This method for producing a carbonate compound is characterized: by including a st...
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WO/2022/033202A1 |
Provided in the present application is an ibuprofen ester prodrug as represented by structural formula (1), a racemate, a stereoisomer, a pharmaceutically acceptable salt or a solvate thereof, or a solvate of the pharmaceutically accepta...
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WO/2021/255052A1 |
An in-situ method for making a conjugated diene from an allyl alcohol comprising the conversion of the allyl alcohol to an allyl carbonate, allyl ester or allyl formate with concomitant or subsequent conversion of the allyl carbonate, al...
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WO/2021/230151A1 |
The purpose of the present invention is to provide a method for efficiently manufacturing high-quality polyurethane. This method for manufacturing polyurethane is characterized by including: a step in which a specific fluorocarbonate com...
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WO/2021/125989A1 |
Disclosed is a high yield, high selectivity and high conversion method to produce Dimethyl Carbonate (DMC) from carbon dioxide (CO2) and methanol (MeOH) using optimized concentration of ethylene oxide as water scavenger. The method provi...
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WO/2021/114092A1 |
Disclosed is a method for preparing dimethyl carbonate, comprising the following steps: contacting a raw material containing ethylene carbonate and methanol with a catalyst, and reacting to obtain the dimethyl carbonate. The catalyst com...
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WO/2021/114091A1 |
The present application discloses a homogeneous catalyst. The homogeneous catalyst comprises an ionic liquid comprising anions and cations; wherein the anion and the cation both contain a nitrogen-containing heterocycle, the cation has a...
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WO/2021/110627A1 |
The invention relates to a process for removing an ether alkanol impurity from a stream containing an organic carbonate and the ether alkanol impurity, comprising contacting the stream with an extraction solvent and separating the extrac...
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WO/2021/106372A1 |
The present invention pertains to a method for recovering palladium metal and/or a palladium compound that had eluted from a solid catalyst in a dialkyl carbonate production device through a simple operation that is highly economical and...
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WO/2021/093854A1 |
A method for preparing battery-grade methyl ethyl carbonate, comprising a reactive rectifying column (100), a reactive rectifying column reboiler (101), a first compressor (201), a removal column (200), a product rectifying column (300),...
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WO/2021/063853A1 |
The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bott...
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WO/2021/047050A1 |
The present invention provides an enhanced carbonylation reaction system and process, and relates to the technical field of carbonylation preparation of carbonyl compounds such as aldehyde and ketone. The enhanced carbonylation reaction ...
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WO/2021/045105A1 |
The purpose of the present invention is to provide a method for safely and efficiently producing a carbonyl halide even when visible light is mainly used. A method for producing a carbonyl halide according to the present invention is cha...
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WO/2021/037516A1 |
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 car...
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WO/2021/031432A1 |
Presented is a use of a fluorination gas, wherein the elemental fluorine (F 2) is present in a high concentration, for example, in a concentration of elemental fluorine (F 2), especially of equal to much higher than 15 or even 20% by vol...
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WO/2021/033504A1 |
A method for producing a carbonyl compound by means of a flow reaction, wherein: a triphosgene solution is introduced into a flow path (I); the triphosgene solution comes into contact with a solid catalyst, which is affixed to at least a...
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WO/2021/033505A1 |
A method for producing a carbonyl compound by means of a flow reaction, wherein: a triphosgene solution, a tertiary amine solution and an active hydrogen-containing compound solution are introduced into different flow paths and are cause...
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WO/2021/023569A1 |
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.
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WO/2021/008516A1 |
A phenyl-containing compound, an intermediate thereof, a preparation method therefor and an application thereof. Provided is a compound represented by formula I or a pharmaceutically acceptable salt thereof, where R 1, R 2, R 3, R 4 and ...
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WO/2021/003974A1 |
The present invention relates to the field of preparation methods for propylene carbonate. Disclosed is a preparation method for propylene carbonate on the basis of a carbon dioxide raw material, comprising the following steps: under a t...
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WO/2020/127287A1 |
In a process for making dimethyl carbonate (DMC) by direct carbonylation, where dimethyl ether (DME) is used as feed, any formation of water is eliminated completely in the oxidative carbonylation step. The carbonylation of DME into DMC ...
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WO/2020/126989A1 |
The invention relates to a process wherein a dialkyl carbonate stream containing an ether alkanol impurity is subjected to extractive distillation using an extraction solvent to obtain a top stream comprising dialkyl carbonate and a bott...
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WO/2020/116485A1 |
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 involv...
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WO/2020/100970A1 |
The purpose of the present invention is to provide a method for safely and efficiently producing a halogenoformic acid halogenated alkyl ester that also serves as a synthesis intermediate of a carbamate or an isocyanate compound. This me...
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WO/2020/100977A1 |
The purpose of the present invention is to provide a method for safely and efficiently producing a carbonate derivative even when a base is not used. This method for producing a carbonate derivative includes a step in which a composition...
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WO/2020/070760A1 |
The present invention relates to an improved process for the preparation of 1,2,3-Propanetriyl tris (4-phenylbutanoate) compound of formula-1, comprising 4-phenyl butyric acid compound of formula-2 with glycerol to provide 1,2,3-Propanet...
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WO/2020/067577A1 |
Provided is a synthesis method comprising a first step of producing a carbonate compound from carbon monoxide and an alcohol-based compound at an anode of a first electrochemical cell comprising a cathode and the anode, and a second step...
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WO/2020/030582A1 |
The present invention relates to a process for providing carbonic acid esters of formula (I). Further, the invention relates to the intermediates of the formula (IVa).
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WO/2020/022416A1 |
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 b...
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WO/2020/021364A1 |
Processes for producing a disubstituted oxalate and/or disubstituted carbonate are disclosed. The processes use a water removal agent to tune the amount of disubstituted oxalate and/or disubstituted carbonate in the product mixture. One ...
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WO/2020/013135A1 |
Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yie...
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WO/2019/158463A1 |
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...
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WO/2019/148604A1 |
Disclosed is a method for preparing a dialkyl carbonate by means of urea alcoholysis, relating to the field of chemical synthesis, and in particular to the preparation of a dialkyl carbonate. Urea and alkyl monohydric alcohol are subject...
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WO/2019/138993A1 |
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 f...
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WO/2019/097005A1 |
The invention relates to aluminum containers containing dicarbonates and to a method for producing the packaged dicarbonates.
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WO/2019/065549A1 |
The present invention addresses the problem of achieving: a method for making it possible to reuse a catalyst for carbonate ester production by restoring activity to the catalyst with a simple procedure and without complicated steps such...
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WO/2019/039317A1 |
The present invention addresses the problem of providing a method for efficiently producing a dialkyl carbonate. The problem can be solved by a method for producing a dialkyl carbonate by reacting urea and at least one alkyl carbamate wi...
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WO/2019/007828A1 |
The present invention relates to a method for electrochemically producing arylalkyl carbonates or diaryl carbonates, which is characterized in that compounds of formula (1) R1-OH, wherein the radical R1 is an alkyl radical, preferably a ...
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WO/2019/007831A1 |
The invention relates to an electrochemical process for electrochemically synthesizing diaryl carbonates, characterized in that a formula of formula R-OH (1), where R is an aryl group, preferably a tert-butylphenyl, cumyl-phenyl, naphthy...
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WO/2018/233093A1 |
A system and a process for co-producing dimethyl carbonate and ethylene glycol. The system comprises an interconnected ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. The ethylene carbonate preparation uni...
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WO/2018/211952A1 |
The purpose of the present invention is to provide a method for safely and efficiently producing a carbonate derivative. This carbonate derivative production method is characterized by emitting light in the presence of oxygen to a compos...
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WO/2018/211953A1 |
The purpose of the present invention is to provide a method for safely and efficiently producing a fluorinated carbonate derivative. This fluorinated carbonate derivative production method is characterized by emitting light in the presen...
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WO/2018/163128A1 |
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 t...
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WO/2018/125879A1 |
A method of treating an organic carbonate stream comprising passing the organic carbonate stream through a fixed bed to remove contaminants and produce a less contaminated stream wherein the fixed bed comprises a weak base.
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WO/2018/125878A1 |
A method of treating an organic carbonate stream comprising passing the organic carbonate stream through a fixed bed to remove contaminants and produce a less contaminated stream wherein the fixed bed comprises alumina or silica.
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WO/2018/116775A1 |
Provided is a method for regenerating an aromatic amide compound into the corresponding aromatic nitrile compound, the method rendering a dehydration reaction possible, in which a desired compound can be selectively obtained in a high yi...
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WO/2018/107450A1 |
This invention provides an electrochemical process for producing a propiolactone compound comprising reacting a compound having at least one ethylenically unsaturated carbon-carbon double bond with carbon dioxide in the presence of an el...
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