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WO/2021/047392A1 |
The present invention relates to a process method for preparing acetic acid by carbonylating methanol by means of a reactor thermally coupled with a rectifying tower. The process method comprises: introducing methanol and CO into the rea...
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WO/2021/047490A1 |
Disclosed in the present invention is a method for preparing dexibuprofen, comprising: (1) after adding toluene into a reaction kettle, adding ibuprofen and n-octyl-d-glucamine, heating to 76 to 80°C, keeping the temperature and reactin...
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WO/2021/045145A1 |
Provided is a method for carbonylating a raw material substance with carbon monoxide to produce acetic acid, wherein said method is characterized in that: the method comprises a reaction step in which a reaction mixture that contains ace...
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WO/2021/042411A1 |
Disclosed are an AKR1C3 inhibitor or a pharmaceutically acceptable salt of same, a preparation method for same, and uses thereof. A structural optimization is performed with a nonsteroidal anti-inflammatory medicament, flurbiprofen, serv...
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WO/2021/038340A1 |
The invention relates to a method of separation by fractionalization of the antioxidant active ingredients of Rosemary plant, which are the diterpenes Carnosic acid and Camosol and the phenolic acid Rosmarinic Acid, through column chroma...
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WO/2021/038391A1 |
A process for the purification of crude terephthalic acid, wherein a slurry containing crude terephthalic acid (CTA) crystals undergo solvent interchange in a first filtration step with counter-current washing in rotary pressure filters ...
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WO/2021/041361A1 |
Compositions and methods are provided for producing crystalline forms of organic acids or salts or lactones thereof from an aqueous solution. More specifically, methods are provided for producing a crystalline form of a salt of mevalonic...
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WO/2021/038394A1 |
An apparatus for the purification of crude terephthalic acid, wherein a slurry containing crude terephthalic acid (CTA) crystals undergo solvent interchange in a first filtration step with counter-current washing in rotary pressure filte...
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WO/2021/039817A1 |
The present invention aims to provide a carboxylic acid fluoride production method having improved product yield, without creating an HCl by-product in the reaction system, i.e., without forming a complex with carboxylic acid fluoride ha...
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WO/2021/038374A1 |
A system and method for coproduction in the production of ethylene, including contacting ethane with an oxidative dehydrogenation (ODH) catalyst in presence of oxygen in a first reactor to dehydrogenate ethane to ethylene, and contacting...
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WO/2021/040267A1 |
The present invention relates to a method of extracting caffeic acid and rosmarinic acid from rosemary, and more specifically, to a method of extracting caffeic acid and rosmarinic acid from rosemary, the method comprising the steps of: ...
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WO/2021/032673A1 |
The present application relates to a compound of the following formula (I), in which: - R1, R2, R3 and R4 represent, independently of each other, H or a (Ci-C30) alkyl group, the total sum of the number of carbon atoms of R1, R2, R3 and ...
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WO/2021/027807A1 |
Disclosed is a method for preparing an azelaic acid. In particular, the preparation method does not use ozone. The above method for preparing an azelaic acid includes carrying out a decarboxylation reaction of tetracarboxylic acid in org...
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WO/2021/030349A1 |
Reactor liquids, compositions, and methods of forming acetic acid, which may reduce catalyst loss. The reactor liquids and compositions may include, and the methods may use, a tri- aliphatic hydrocarbyl phosphine oxide. The carbonylation...
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WO/2021/022938A1 |
A method for preparing a metal-organic framework (MOF) using solid waste from a metallurgical mine, relating to the field of comprehensive utilization of resources. The method dissolves solid waste from a metallurgical mine using a conce...
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WO/2021/023803A1 |
The presently claimed invention relates to a continuous process for the preparation of dicarboxylic acids, especially a continuous process for the preparation of sebacic acid.
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WO/2021/019224A1 |
The invention discloses a catalyst comprising a silica support, a modifier metal and a catalytic alkali metal. The silica support has a multimodal pore size distribution comprising a mesoporous pore size distribution having an average po...
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WO/2021/018717A1 |
The present invention relates to a method of extracting at least one selected from carbonic acid, aliphatic acid, aliphatic acid ester and aliphatic alcohol from an aqueous medium, the method comprising the steps: (a) contacting the carb...
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WO/2021/021849A1 |
A process for preparing a recycle content (C4)alkanoic acid (i.e., butyric acid and/or isobutyric acid) derived from a recycle propylene composition, a recycle (C4)alkanal are provided.
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WO/2021/012722A1 |
The present invention belongs to the technical field of chemical pharmaceutical engineering. Provided are a sodium 3-hydroxybutyrate product and a preparation method therefor. The sodium 3-hydroxybutyrate product has a degree of crystall...
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WO/2021/013640A1 |
A process for the continuous production of either acrolein or acrylic acid as the target product from propene comprising a catalyzed gas phase partial oxidation of propene to yield a product gas containing the target product, transferrin...
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WO/2021/011810A1 |
A process for a reactive extraction and subsequent purification of organic molecules from biomass comprises extracting one or more products from the biomass using an extraction solvent to solvate the products, contacting the biomass with...
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WO/2021/004719A1 |
The present invention relates to a novel process for producing methacrylates, such as methacrylic acid and/or alkyl methacrylates, in particular MMA. The present invention relates, in particular, to an increase in yield and efficiency of...
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WO/2021/004209A1 |
The present invention relates to a eutectic of calcium dihydropyridine antagonist and a preparation method therefor and an application thereof. The eutectic molecular formula is (C20H25ClN2O5)·(C6H5COOH)·(Y)n, wherein: Y is any one amo...
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WO/2021/001756A1 |
Present disclosure relates to a two-step fermentation process for obtaining cellulose and gluconic acid. The present two-step fermentation yields bacterial cellulose in first stage of fermentation and gluconic acid in second stage of fer...
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WO/2020/258442A1 |
Disclosed is a preparation method for an organic metal carboxylate. The present invention effectively solves the problem of a conventional metal organic carboxylate production process having a complicated rinsing process and a cumbersome...
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WO/2020/260371A1 |
The invention relates to a process for distillative removal of a unsaturated carboxylic anhydride of the general formula (I) R-C(O)-O-C-(O)-R in which R is an unsaturated organic radical having 2 to 12 carbon atoms, wherein said unsatura...
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WO/2020/258131A1 |
Provided is a method for preparing glycolic acid which comprises oxidizing glycolaldehyde with molecular oxygen in the presence of a solvent and a supported catalyst. Said supported catalyst comprises (i) a noble metal selected from the ...
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WO/2020/258441A1 |
Disclosed in the present invention is a preparation method for a nano organometallic carboxylate. The present invention effectively solves the problems of a complex washing process, and cumbersome, dangerous and uneconomical preparation ...
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WO/2020/256556A1 |
The present invention pertains to a method for the preparation of maleic acid from 5-hydroxy-2(5H)-furanone or a tautomer thereof, said method comprising the step of subjecting 5-hydroxy-2(5H)-furanone or a tautomer thereof to an oxidati...
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WO/2020/257571A1 |
The invention provides methods of preparing 8-hy droxy-2,2, 14,14- tetramethylpentadecanedioic acid and methods of making a pharmaceutical material comprising a purified amount of 8-hy droxy-2,2, 14, 14-tetramethylpentadecanedioic acid. ...
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WO/2020/252536A1 |
A method for producing a crystalline hydrogen-bonded organic framework (HOF) that encapsulates a bio-molecule, the method comprising combining in a solution the bio-molecule and a HOF precursor, wherein the HOF precursor self-assembles t...
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WO/2020/248076A1 |
Disclosed are methods for separating, recovering, and purifying cannabidiolic acid (CBDA) salts from an organic solvent solution comprising a mixture of cannabinoids. The methods comprise solubilizing the mixture of cannabinoids in C5-C7...
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WO/2020/249688A1 |
Process for the production of a diacyl peroxide involving the reaction of an anhydride with hydrogen peroxide, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride wi...
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WO/2020/249692A1 |
Method for isolating carboxylic acid from an aqueous metal carboxylate-containing side stream of an organic peroxide production process, involving the protonation of the carboxylate, separation of liquid and organic phases, and the remov...
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WO/2020/249690A1 |
Process for the production of a diacyl peroxide involving the reaction of an anhydride with a peroxyacid, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride within ...
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WO/2020/248279A1 |
The present invention provides a continuous synthesis method for a substituted benzoate organic matter. The continuous synthesis method comprises: in the presence of a catalyst and an organic solvent, continuously feeding an organic matt...
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WO/2020/248278A1 |
The present invention provides a method for the continuous synthesis of a substituted benzoic-acid organic substance. The continuous synthesis method comprises: in the presence of catalyst and organic solvent, the organic matter represen...
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WO/2020/249689A1 |
Process for the production of a peroxyester involving the reaction of an anhydride with an organic hydroperoxide, separation of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydr...
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WO/2020/251613A1 |
There is disclosed a process for the production of dodecanedioic acid and 11- aminoundecanoic acid, comprising: (1) reacting castor oil with a primary or secondary amine to form a amide; (2) isomerizing the amide in the presence of a cat...
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WO/2020/248483A1 |
Disclosed is a preparation process of stearate, which is a method for preparing stearate by directly reacting a metal oxide or hydroxide with stearic acid. The process not only has simple steps, uses a small number of devices, requires a...
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WO/2020/249691A1 |
Process for the production of a diacyl peroxide involving the reaction of an anhydride with an aldehyde and oxygen, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydri...
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WO/2020/244280A1 |
Disclosed are a nano-copper catalyst, a preparation method therefor and an application in the synthesis of acetic acid or ammonia, the catalyst comprising a substrate and an active agent supported on the substrate, wherein the active age...
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WO/2020/246476A1 |
A production method for a catalyst for producing acrylic acid from acrolein, said production method having a hydrothermal synthesis step in which a raw material mixture including a molybdenum oxide, a vanadium oxide, a copper oxide, a po...
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WO/2020/243907A1 |
The present invention relates to a method of synthesizing at least one organic acid comprising oxidizing glycolaldehyde with nitric acid in the presence of a solvent. Advantageously, it is an industrially applicable process, which prepar...
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WO/2020/238753A1 |
A preparation method for salicylamine acetate, comprising preparing an amino-protected intermediate from salicylaldehyde, and reacting the intermediate with acetic acid to prepare an acetate.
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WO/2020/241720A1 |
The present invention provides: a method which is capable of suppressing polymerization of methacrylic acid even if the methacrylic acid is in the coexistence of an extraction solvent such as xylene; and a method for producing a methacry...
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WO/2020/243754A1 |
Provided herein is a method of forming a beta-lactone from a carboxylic acid having a beta-carbon with a hydrogen atom disposed thereon. The method comprises contacting a carboxylic acid of formula (1) as described herein with an effecti...
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WO/2020/233778A1 |
The invention relates to fragrance or flavouring agent mixtures containing (i) (E)-2-methyl-but-2-ene dicarboxylic acid diester, (ii) (Z)-2-methyl-but-2-ene dicarboxylic acid diester and (iii) 2-methylene butane dicarboxylic diester and ...
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WO/2020/232742A1 |
Provided is a bifenthrin derivative, wherein same has a structural formula as shown in formula (I). The derivative is obtained mainly through modifying and transforming benzene rings at the ortho-position and terminal-position on an inte...
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