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WO/2021/203256A1 |
Privided are antifoulant compounds or compositions used for inhibiting or reducing the deposition of ammonium salts.
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WO/2021/196383A1 |
An external micro-interface unit enhanced reaction system and process for production of PTA from PX. The system comprises a reactor, a first micro-interface generator (17), and a second micro-interface generator (18); the reactor compris...
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WO/2021/202270A1 |
Continuous acetic acid production with a process to remove and/or reduce permanganate reducing compounds (PRCs), including acetaldehyde. The process involves obtaining a stream comprising the PRCs and removing water from the stream throu...
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WO/2021/199589A1 |
The present invention more efficiently produces a glycolic acid salt, which can be a starting material (an intermediate product) for the production of glycolic acid, by means of a simple process. A method for producing a glycolic acid ...
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WO/2021/200689A1 |
The present invention provides a catalyst which enables the production of isobutylene with high selectivity in cases where isobutylene is produced by means of dehydration of isobutanol. A catalyst according to the present invention conta...
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WO/2021/196386A1 |
A built-in micro-interface oxidation system for preparing terephthalic acid from p-xylene. The oxidation system comprises: a first reactor (10), a rectifying tower (20) and a second reactor (30), which are sequentially connected, wherein...
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WO/2021/196385A1 |
An oxidation enhancement system for producing PTA by PX having an external micro-interface unit, comprising: a reactor, a circulating heat exchange device and a micro-interface unit; the reactor comprises a housing (10) and an inner cyli...
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WO/2021/196349A1 |
An organic acid salt of nicotinamide riboside; the organic acid is selected from malic acid, citric acid, royal jelly acid, and so on, and the molar ratio of nicotinamide riboside to organic acid is 1:2 or 1:1. A compound composition of ...
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WO/2021/200795A1 |
The present invention provides a method for producing isobutylene from isobutanol with high selectivity under pressure, while suppressing decrease in the conversion rate of isobutanol. A method for producing isobutylene according to the ...
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WO/2021/200785A1 |
Provided is a method for energy-efficiently producing purified acetic acid from a mixed solution comprising acetic acid, an organic solvent, and water. The method, which is for producing purified acetic acid from a mixed solution compr...
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WO/2021/198014A1 |
The present invention relates to an improved process for the production of methacrylates, in particular methacrylic acid and/or methyl methacrylate (MMA). Furthermore, the present invention relates to a process and specific embodiments o...
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WO/2021/196384A1 |
The present invention provides a reaction enhancement system and process for producing PTA by PX having a built-in micro-interface unit. Said system comprises: a reactor and a micro-interface unit provided within the reactor; the reactor...
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WO/2021/191876A1 |
Methods for the synthesis of methyl 2-fluoroacrylate (MFA) are provided. The methods include use of various hydrofluorination agents using a variety of starting materials and reaction schemes. The methyl 2-fluoroacrylate prepared by the ...
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WO/2021/193511A1 |
Provided is a method for producing a purified acetic acid that exhibits good color. The method for producing a purified acetic acid comprises treating acetic acid having poor color with a synthetic adsorbent to yield acetic having improv...
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WO/2021/194380A1 |
The invention relates to a method for producing a crystalline form of calcium cis-2,3-epoxysuccinate using a seed crystal that is a crystalline form of calcium cis-2,3-epoxysuccinate, the crystals of which belong to the Р21/n space grou...
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WO/2021/194384A1 |
The invention relates to the field of producing metal carboxylates. In particular, the present invention relates to the crystalline form of calcium cis-2,3-epoxysuccinate (salt of 2,3-epoxy-1,4-butanedioic acid) and a method for the prod...
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WO/2021/193565A1 |
In a preferred embodiment, this production method for a cyclic compound or a derivative thereof has: a drying step for subjecting a feedstock liquid containing the cyclic compound or the derivative thereof to a drying treatment to obtain...
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WO/2021/194379A1 |
The invention relates to the field of producing metal carboxylates. More particularly, the invention relates to the field of producing a novel crystalline form of calcium cis-2,3-epoxysuccinate (a salt of 2,3-epoxy-1,4-butanedioic acid) ...
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WO/2021/191042A1 |
Process for inhibiting the undesired free-radical polymerization of acrylic acid present in a liquid phase P, wherein the acrylic acid content of P is at least 10% by weight, the liquid phase P contains in the range from 25 to 1000 ppmw ...
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WO/2021/194383A1 |
The invention relates to the field of producing metal carboxylates. More particularly, the invention relates to the field of producing a novel crystalline form of calcium cis-2,3-epoxysuccinate (a salt of 2,3-epoxy-1,4-butanedioic acid) ...
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WO/2021/187057A1 |
The present invention pertains to a formate production method comprising: a first step for producing a formate by causing a reaction between hydrogen and carbon dioxide in a solution containing a solvent, a catalyst dissolved in the solv...
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WO/2021/186459A1 |
An improved process for photocatalytic hydrocarboxylation of methanol with CO2 to produce acetic acid The present invention discloses a photocatalytic process and methodology for the preparation of acetic acid by a hydrocarboxylation rea...
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WO/2021/185879A1 |
A catalytic process for preparing an α,β-ethylenically unsaturated carboxylic acid salt, comprising a) contacting an alkene and carbon dioxide with a carboxylation catalyst, an organic solvent, and an alkoxide having a secondary or ter...
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WO/2021/180078A1 |
Disclosed is a method for preparing chitosan using snow crab shells, the method comprising the steps of pretreating the crab shells, decalcifying same with a citric acid solution, extracting organic calcium, decalcifying same again, depr...
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WO/2021/177343A1 |
Provided is a method in which a caged compound represented by general formula (I) is irradiated with light in the presence of a photosensitizer to thereby release a compound represented by general formula (II). In cases when X is O, th...
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WO/2021/172423A1 |
The purpose of the present invention is to provide a catalyst capable of improving the selectivity of unsaturated aldehyde and unsaturated carboxylic acid. Provided is a catalyst containing at least molybdenum, antimony, bismuth, and iro...
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WO/2021/172458A1 |
A method for separating water-containing crystals, the method including: a step for generating water-containing crystals from a mixed liquid that contains water, acetic acid, and methacrylic acid; and a step for separating the crystals, ...
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WO/2021/171201A1 |
Disclosed is a process for producing terephthalic acid. The process includes contacting p-xylene with a gaseous stream containing oxygen (O2) in presence of a homogeneous catalyst solution, at a reaction temperature of 180 °C to 195 °C...
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WO/2021/171033A1 |
The invention relates to a process for producing a metal organic framework, wherein the metal organic framework comprises one or more metal ions and one or more organic linkers, wherein the process comprises contacting the one or more me...
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WO/2021/165964A1 |
Industrial fermentation for the production of lactic acid from organic waste combined with chemical recycling of polylactic acid are provided, to obtain lactic acid at high yields.
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WO/2021/164852A1 |
The invention relates to a continuous process for preparing limonene, characterized by isomeriizing beta-pinene or beta-pinene-containing reactants in the presence of acidic catalysts in a trickle be reactor.
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WO/2021/161101A1 |
Disclosed is a method for preparing compound Formula S-1, comprising resolving compound Formula rac-2 with a compound of Formula 3 wherein R1 · R4, m and n are as defined in the disclosure.
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WO/2021/161100A1 |
Disclosed is a method for preparing compound S-1 (S-1) comprising resolving compound rac-2 (rac-2) with a compound of Formula 3 wherein R1, R4, m and n are as defined in the disclosure.
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WO/2021/160470A1 |
The present invention relates to a process for the preparation of aromatic carbonyl compounds of formula I, which can be obtained through reaction of compounds of formula II with molecular oxygen in the presence of a solvent and a cataly...
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WO/2021/161099A1 |
Disclosed are methods for preparing compound S-1 (S-1) from (R)-2-bromobutanoic acid prepared by treating (R)-2-aminobutanoic acid with an alkali metal nitrite compound and hydrobromic acid.
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WO/2021/160649A1 |
Disclosed is a method for preparing compound S-1, from compound S-5; wherein compound S-5 is prepared by treating compound 2 with a tertiary amine and a hydrogen source in the presence of a chiral complex.
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WO/2021/158890A1 |
A method for synthesizing furan-2, 5-dicarboxylate (FDCA2-) is provided. Furan-2-carboxylate is provided with an inorganic base in the form of an inorganic base salt, wherein the furan-2-carboxylate and the inorganic base salt form a mix...
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WO/2021/156406A1 |
The present invention relates to a process for preparing 8-hydroxy-9,10-dioxo-anthracene-1- carboxylic acid. It also relates to a method for preparing an anthraquinone derivative comprising a step for preparing 8-hydroxy-9,10-dioxo-anthr...
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WO/2021/153586A1 |
Trans,trans-muconic acid or an alkyl ester thereof, which serves as a raw material for terephthalic acid or an alkyl ester thereof, is produced by a step in which α-hydromuconic acid or an alkyl ester thereof, which can be derived from ...
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WO/2021/151870A1 |
The invention relates to a method for catalytically producing an alkyl formate, wherein at least one alpha-hydroxy aldehyde, at least one alpha-hydroxy carboxylic acid, at least one carbohydrate, and/or at least one glycoside is reacted ...
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WO/2021/152916A1 |
Provided is a method for producing a catalyst which is used in a gas-phase contact oxidation reaction for producing an unsaturated carboxylic acid such as an acrylic acid and a methacrylic acid from an unsaturated aldehyde such as acrole...
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WO/2021/149788A1 |
Provided is a method for stably providing a high purity R-COF product, the method configured so that a reduction in R-COF yield caused by contamination by impurities is prevented. According to the present invention, provided are: a met...
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WO/2021/148836A1 |
The present invention relates to novel naphthalene-based compounds, to their process of preparation, and to their use as Solid Organic Catalysts (SOC) in lithium-air battery cells to promote oxygen reactions. The invention also concerns ...
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WO/2021/143194A1 |
The present invention relates to a catalyst for a phosgenation reaction and a phosgenation reaction method. The catalyst for a phosgenation reaction of the present invention is a phosphinyl ionic liquid as represented by general formula ...
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WO/2021/145233A1 |
[Problem] To provide a method for producing acrylic acid capable of improving the yield of acrylic acid and lengthening the service life of a catalyst in a method in which acrylic acid is produced by gas-phase catalytic oxidation of acro...
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WO/2021/144423A1 |
The invention pertains to a process for removing lactic acid from an aqueous lactic acid-containing magnesium chloride solution, the weight ratio of magnesium chloride to lactic acid in the aqueous lactic acid-containing magnesium chlori...
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WO/2021/145267A1 |
The purpose of the present invention is to provide a formic acid production method and a formic acid production system that have low cost and high production efficiency. A formic acid production method characterized in that a metal oxide...
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WO/2021/140044A1 |
A process for the preparation of a saturated aliphatic carboxylic acid with 3 to 5 carbon atoms by oxidation of the corresponding aldehyde with oxygen in which (a) the corresponding aldehyde is converted with oxygen at a temperature of 4...
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WO/2021/141133A1 |
A catalyst containing molybdenum, bismuth, and cobalt as essential components, wherein in an X-ray diffraction pattern which is obtained using CuKα radiation as an X-ray source, the sum (S) of peak intensity ratios as represented by the...
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WO/2021/140869A1 |
Provided is a method for efficiently obtaining an organozinc catalyst. More specifically, the present invention provides a method for producing an organozinc catalyst that includes reacting an inorganic zinc compound and an aliphatic car...
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