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WO/2023/189498A1 |
The purpose of the present invention is to provide a method for producing a 4,4'-dihydroxybiphenyl-3,3'-dicarboxylic acid at high yield. Disclosed is a method for producing a 4,4'-dihydroxybiphenyl-3,3'-dicarboxylic acid represented by f...
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WO/2023/189499A1 |
The purpose of the present invention is to provide a production method by which 4,4'-dihydroxybiphenyl-3,3'-dicarboxylic acid can be obtained with a high yield. The present invention discloses a method for producing 4,4'-dihydroxybipheny...
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WO/2023/192840A1 |
Polymerization inhibitor compositions are provided. The polymerization inhibitor compositions include at least a first inhibitor compound having a stable nitroxide radical and a second inhibitor compound having a hydroxylamine. Methods o...
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WO/2023/192843A1 |
Inhibitor compositions for abating undesirable polymerization during processing of hydrocarbon stream laden with reactive vinylic monomers are provided. The polymerization inhibitor compositions include at least a first inhibitor compoun...
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WO/2023/190164A1 |
The present invention provides: a method for producing a very pure aryl ester-containing carboxylic acid, wherein oligomer production is suppressed and a low-productivity purification step, such as column chromatography, is not required;...
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WO/2023/183864A1 |
The present invention provides a process for production of both purified recycled aromatic dicarboxylic acid (rCA) and purified aromatic dicarboxylic acid (vCA), said process comprising: a) Producing a first stream comprising a recycled ...
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WO/2023/182425A1 |
The present invention addresses the problems of providing a catalyst that has high heat resistance and that enables methacyrlic acid to be produced at high yield, and providing a method for producing methacyrlic acid and methacrylic acid...
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WO/2023/182426A1 |
The present invention addresses the problems of providing a catalyst that has high heat resistance and that enables methacyrlic acid to be produced at high yield, and providing a method for producing methacyrlic acid and methacrylic acid...
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WO/2023/180780A1 |
The subject of the invention is a process for the preparation of food-grade fulvic acid and/or humic acid from peat, xyloid lignite, leonardite, wherein (i) the raw material is subjected to acid pretreatment, and then a solid-liquid sepa...
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WO/2023/178814A1 |
Provided in the present invention is a method for preparing an intermediate of paxlovid. The present invention relates to the technical field of synthesis of pharmaceutical intermediates. The method comprises the following steps: (1) rea...
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WO/2023/173717A1 |
The present invention relates to a preparation method for an intermediate compound acting as a posaconazole synthetic drug, and an intermediate compound prepared thereby. The preparation method for a compound of formula (I) provided by t...
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WO/2023/174905A1 |
A process for the production of glycolic acid comprising subjecting an aqueous oxalic acid solution to a hydrogenation reaction in the presence of hydrogen and a metal containing hydrogenation catalyst, wherein the process is a continuou...
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WO/2023/178061A1 |
Improved methods and intermediates thereof for preparing (1S,3S)-3-hydroxycyclohexane-1-carboxylic acid are described. These compounds are useful as intermediates for making carbamoyloxymethyl triazole cyclohexyl acid LPA antagonists.
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WO/2023/178138A1 |
Recycle content organic acids, such as recycle content propionic acid and recycle content butyric acid, are produced using a process and system that applies physical and/or credit-based recycle content from one or more feed materials to ...
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WO/2023/174409A1 |
The present invention relates to a salt form and a crystal form of a Vanin enzyme inhibitor represented by formula I, a method for preparing same, and use thereof. The salt form is a salt formed by the compound represented by formula I w...
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WO/2023/173066A1 |
Described in this application are proteins and host cells involved in methods of producing absisic acid (ABA) precursors and/or ABA.
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WO/2023/169520A1 |
The use of an arylvinyl α-carbonyl acid ester compound (I) as a photoinitiator in LED photopolymerization and a preparation method therefor, which relate to the field of polymer photocuring, and are provided on the basis of the problems...
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WO/2023/169810A1 |
The present invention relates to a process for producing alkyl methacrylates (AMA), in particular methyl methacrylate (MMA), and alpha-hydroxyisobutyric acid alkyl esters (2-HIBSA), in particular alpha-hydroxyisobutyric acid methyl ester...
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WO/2023/167325A1 |
The present invention addresses the problem of developing a metal catalyst which is suitable for continuous flow organic synthesis reaction, is excellent in durability, and has high activity. The present invention provides an immobiliz...
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WO/2023/166438A1 |
Process for producing acetic acid from fossil-type, renewable and/or recoverable organic sources comprising the steps of: a) converting the organic waste source into a mixture comprising syngas, carbon dioxide and water by means of react...
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WO/2023/165735A1 |
A process for the activation of a vanadium/phosphorus mixed oxide catalyst ("VPO" catalyst) precursor, whereby the precursor is transformed into the corresponding active catalyst suitable for use in the production of maleic anhydride by ...
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WO/2023/163050A1 |
The present invention pertains to a catalyst reaction method wherein, in a catalyst reaction that uses at least one catalyst selected from the group consisting of metal complexes represented by general formula (1A) set forth in the descr...
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WO/2023/161483A1 |
The invention pertains to a method for manufacturing sodium lactate (NaL) solid particles, characterized in that the method comprises the following steps: - providing a melt of NaL wherein the melt has a chemical purity of at least 95 %....
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WO/2023/163014A1 |
The present invention provides a method for producing a formic acid salt, which is suitable for improving the TON of a metal catalyst. This production method is for producing a formic acid salt by reacting hydrogen with a compound C that...
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WO/2023/163048A1 |
The present invention pertains to: an immobilized catalyst obtained by immobilizing a metal complex in a polymer, said immobilized catalyst including a polymer represented by general formula (1) set forth in the description; a production...
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WO/2023/163369A1 |
The present invention relates to a method for preparing nano calcium citrate and, specifically, to a method for preparing nano calcium citrate, comprising the steps of: dissolving citric acid in a solvent of ethanol and water (step 1); a...
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WO/2023/164219A1 |
A method of producing a polymer includes steps of providing δ-valerolactone 2-ethylidene-6-hepten-5-olide (EVL); providing an amine-containing compound; allowing the EVL and the amine-containing compound to be mixed to form a mixture; a...
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WO/2023/162810A1 |
The purpose of the present invention is to provide a method for producing a catalyst compact which has a high mechanical strength and with which it is possible to produce an unsaturated aldehyde and/or an unsaturated carboxylic acid in g...
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WO/2023/162794A1 |
The purpose of the present invention is to provide: a method that can stably produce a catalyst molded article having a high α,β-unsaturated carboxylic acid yield and having an excellent moldability in a step for molding a catalyst dri...
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WO/2023/161095A1 |
The invention relates to the extraction of acrylic acid from aqueous streams. The aim of the invention is to provide a process for extracting acrylic acid from aqueous streams with a low energy expenditure and allowing longer operating t...
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WO/2023/156429A1 |
The present invention relates to the field of organic synthesis and more specifically it concerns a process for preparing compound of formula (I). The compound of formula (V), the compound of formula (VI) and the compound of formula (VII...
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WO/2023/155797A1 |
Provided is a method for purifying L-lactic acid, comprising the following steps: (1) a manufacturing procedure; (2) a circulating procedure; (3) a water-jacking-material procedure: using water to conduct water jacking on a cation exchan...
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WO/2023/159017A1 |
This disclosure relates to processes for recovering and purifying vanillin from a microbial fermentation broth, wherein the fermentation broth comprises a vanillin conjugate, such as vanillin glucoside, which is produced during the micro...
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WO/2023/158791A1 |
A system and method for removing acetaldehyde from an acetic acid system are disclosed. The method includes, providing a light-ends stream, comprising carbon monoxide, carbon dioxide, acetaldehyde, methyl iodide, methyl acetate, water, a...
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WO/2023/158996A1 |
Recycled content monoethylene glycol (r-MEG) is produced using a process and system that applies physical and/or credit-based recycled content from one or more feed materials to the MEG produced from the feed materials. Recycled content ...
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WO/2023/157870A1 |
The purpose of the present invention is to provide: a method for producing methacrolein and/or methacrylic acid from isobutanol, the method suppressing the generation of by-products and realizing highly selective production of methacrole...
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WO/2023/154545A1 |
A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, distilling the solution to produce an overhead stream...
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WO/2023/149567A1 |
An aqueous solution comprising terephthalic acid or a salt thereof and a diol is filtered across a polyamide nanofiltration membrane, and terephthalic acid or a salt thereof can be selectively separated and recovered from the non-permeat...
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WO/2023/149514A1 |
The present invention relates to a method for producing a dicarboxylic acid compound and/or a diamine compound and optionally a dehydration-condensation product of a dicarboxylic acid compound and a diamine compound (i.e., a dehydration-...
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WO/2023/145758A1 |
Provided is a method for producing a fluorine-containing phthalic acid derivative, whereby a fluorine-containing phthalic acid derivative can be obtained using a simple process. This method for producing a fluorine-containing phthalic ac...
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WO/2023/143974A1 |
The present invention relates to a process for storing and/or transporting an ethylenically unsaturated compound, the ethylenically unsaturated compound being protected with a phenol against undesired radical polymerization.
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WO/2023/143939A1 |
The present invention relates to a method for storing and/or transporting an ethylenically unsaturated compound, wherein the ethylenically unsaturated compound is protected against undesired radical polymerization with a sterically hinde...
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WO/2023/145605A1 |
The main purpose of the present invention is to provide a catalyst that makes it possible to produce anα,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid with high selectivity. The catalyst is used in producing, via a...
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WO/2023/147354A1 |
A method is provided for synthesizing multi-ring disalicylate linkers. The method can allow for synthesis of disalicylate linkers while using a reduced or minimized amount of solvent (such as down to potentially having no separate solven...
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WO/2023/144108A1 |
The present invention relates to a process for preparing para-hydroxycinnamic acid from para-hydroxybenzaldehydes by condensation with malonic acid.
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WO/2023/137005A1 |
A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, and contacting the solution with a polymer-bound polyol.
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WO/2023/134113A1 |
The present application relates to the technical field of special chemicals, and provides a preparation method for lithium bis(oxalato)borate. The method comprises the following steps: 1) mixing a lithium source, boric acid, oxalic acid,...
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WO/2023/135304A1 |
A method for fractionating a crude composition comprising at least six fatty acids having each a different chain length into at least four fractions, comprises the following steps: i) feeding the crude composition into a first distillati...
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WO/2023/135259A1 |
The invention relates to the field of the production of p-hydroxycinnamic acids. More particularly, the invention relates to a semi-integrated method comprising a first step of enzymatic hydrolysis and a second step of purification of th...
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WO/2023/133625A1 |
A method of producing formate salt from carbon dioxide; it includes receiving the carbon dioxide in a dry compartment, wherein the carbon dioxide diffuses from the dry compartment into a catholyte solution of a first wet compartment thro...
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