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Matches 401 - 450 out of 78,725

Document Document Title
WO/2022/105047A1
A quaternary phosphonium salt polymer loaded bimetallic monatomic catalyst, and a preparation method and a use. The quaternary phosphonium salt polymer loaded bimetallic monatomic catalyst comprises a first metallic active component, a s...  
WO/2022/108050A1
The present invention relates to a method for preparing a diester-based material and, more specifically, to a method for preparing a diester-based material, the method comprising the steps of: conducting a continuous-type production proc...  
WO/2022/099826A1
The present invention relates to a Gemini polyoxyethylene ether succinate surfactant for oil displacement and a preparation method therefor. The present invention is characterized in that the surfactant is a Gemini alkylphenol polyoxyeth...  
WO/2022/101025A1
The present invention relates to a two-component system for chemically fastening an anchoring means in a drill hole by a dual cure process. The dual cure process is a combination of radical polymerization and ring-opening olefin metathes...  
WO/2022/101287A1
A method for generating a carboxylic acid from carbon dioxide (CO2), the method includes (a) feeding a gas stream having the CO2 to a first reactor having a base (MOH) to produce bicarbonate (MHCO3) and (b) feeding the MHCO3 generated in...  
WO/2022/097813A1
The present invention relates to an eco-friendly and highly efficient method for preparing an ester compound based on an esterification reaction using a salt ion-exchange method, and an ester compound thereof. In conventional esterificat...  
WO/2022/098824A1
The invention relates to methods for the synthesis of hydroxy fatty acids from unsaturated fatty acids via epoxidation and catalytic hydrogenation.  
WO/2022/097115A1
The present invention relates to an improved and efficient process for the preparation of Prohexadione and its calcium salt of formula (I). The present invention further relates to a one step process for preparation of ethyl 3,5-dioxo-4-...  
WO/2022/097903A1
The present invention relates to a method for purifying bis-2-hydroxylethyl terephthalate and to providing polyester resin comprising same.  
WO/2022/089534A1
The present invention relates to a method for preparing a synthetic-organic-ester-type base oil and the use thereof. The method involves weighing reactants and an auxiliary agent for an esterification reaction, wherein the reactants are ...  
WO/2022/088583A1
The present invention provides 5-methylchromone, and a preparation method therefor and an application thereof. The 5-methylchromone has the following structure as shown in the formula, wherein R1 and R2 are alkyl. The substituted chromon...  
WO/2022/088286A1
Provided are a water-soluble controllable antibacterial substance and synthesis process. Provided is the water-soluble controlled antimicrobial substance R-(-)-3-hydroxybutyrate ethyl oligomer, having a pH value near neutral, the degree ...  
WO/2022/094420A1
Disclosed herein are deuterated compounds and transition metal catalyzed methods for making deuterated compounds. The disclosed methods are regioselective and enantioselective and may be utilized to prepare isomerically and/or enantiomer...  
WO/2022/090714A1
The invention relates to compounds of formula (I) and to their use in treating or preventing an inflammatory disease or a disease associated with an undesirable immune response: wherein RA1, RA2, RA3, RB, RC, RD, m, n and p are as define...  
WO/2022/094247A1
The present disclosure provides processes for making pleuromutilins.  
WO/2022/084046A1
The present invention relates to a process for preparing methyl methacrylate (MMA) and/or methacrylic acid (MAS) with improved yield, comprising the process steps of amidation, conversion and hydrolysis/esterification, especially high yi...  
WO/2022/085211A1
The present invention provides a method for producing a compound represented by formula (I), the method comprising: (a) a step for obtaining the compound represented by formula (I) as crystals by reacting, in a hydrated ketone solvent an...  
WO/2022/083024A1
According to the present invention, a photo-thermal dual-curing epoxy resin is prepared by one-step reaction of bio-based itaconic acid with an epoxy resin. Epoxy groups are arranged on both ends of the resin, double bonds are arranged o...  
WO/2022/084032A1
The invention relates to an improved process for synthesizing alkyl methacrylates, in particular methyl methacrylate (MMA), involving reacting acetone cyanohydrin (ACH) and sulfuric acid in a first reaction stage (amidation) and heating ...  
WO/2022/085384A1
The present invention addresses the problem of providing a novel ruthenium complex, in which addition of a base during catalyst activation is not necessary, which exhibits excellent crystallinity and stability, for which large scale synt...  
WO/2022/082937A1
A diester structure monomer and a preparation method therefor and an application thereof in ArF photoresist formulation. The preparation method for the diester structure monomer comprises the following steps: dissolving a glycolic acid e...  
WO/2022/083395A1
The present invention relates to a vinyl acetate production process and device. The composition of circulating gas is changed by providing a stabilization process, an acetic acid recovery system, and a desorption system and device, thus ...  
WO/2022/084274A1
The invention relates to an improved process for synthesizing methacrylic acid and/or alkyl methacrylates, in particular methyl methacrylate (MMA), involving reacting acetone and hydrogen cyanide in the presence of an alkaline catalyst i...  
WO/2022/083396A1
The present invention relates to a method for producing vinyl acetate, the method comprising a vinyl acetate synthesis process, a vinyl acetate refining process and a vinyl acetate and ethyl acetate separation process. An acetic acid eva...  
WO/2022/084562A1
The present invention relates to a method for accelerating a chemical transformation of a substrate, particularly C-H arylation and C-H alkylation. Furthermore, the invention relates to the compounds that are used in the method, namely a...  
WO/2022/080813A1
The present invention relates to a novel method for producing an intermediate expressed by chemical formula 5 that can be effectively used in synthesis of sphingosine-1-phosphate receptor agonist.  
WO/2022/069568A1
The present disclosure relates to a method for generating a hydrogel from a CO2 gas stream. The method for converting a CO2 gas stream comprising a CO2 into an ester, comprises the conversion of CO2 into a (COOH)2 preferably by passing t...  
WO/2022/070674A1
Provided is a method for producing an ethyl acetate production catalyst that has high producibility and exceptional catalytic performance, the catalyst being such that a heteropoly acid and/or a salt thereof is carried near the surface o...  
WO/2022/065853A1
The present invention relates to a method for producing an ester-based composition, characterized in that a plurality of batch reactors are operated sequentially, and the pressure inside each reactor is controlled, wherein the ester-base...  
WO/2022/065851A1
The present invention provides a preparation method for an ester-based material, the method comprising a step for reacting, in a batch reactor, in the presence of a catalyst, a mono alcohol having 3 to 12 alkyl carbon atoms, and at least...  
WO/2022/064351A1
Process for producing levulinic acid, which includes a step of catalytic conversion of a pentose (in particular xylose or arabinose) into furfural in an organic solvent having a boiling temperature from 600C to 220°C, followed by a step...  
WO/2022/065852A1
The present invention relates to a method for the continuous production of an ester-based composition, which can increase the production yield by optimizing the pressure, which is a process parameter, of each reactor in a reaction unit i...  
WO/2022/066136A1
A catalyst for vapour-phase heterogeneous catalytic dehydrogenation of ethanol to ethyl acetate contains a mixture of CuO, ZnO, ZrO2 and AI2O3 oxides and further contains from 0.1 to 20 wt.% metal oxide wherein the metal is cerium, galli...  
WO/2022/061271A1
The present application relates to a process for preparation of a compound of Formula (I): wherein R1, R2, and R3 are as described herein and salts thereof and to a process of preparing such a compound. The present application also relat...  
WO/2022/060153A1
The present invention relates to a method for depolymerizing a polymer comprising an ester functional group, a catalyst therefore, and a composition and, more particularly, to a method for depolymerizing a polymer comprising an ester fun...  
WO/2022/053420A1
The present invention relates to a process of preparing polyfluoroether compounds with unsaturated end groups and to compounds prepared by said process.  
WO/2022/051854A1
Curing agents for epoxy monomers are prepared from the partial esterification of citric acid with certain alkyl or alkenyl alcohols. These curing agents, which contain mixtures of unreacted citric acid and monoalkyl or monoalkenyl citrat...  
WO/2022/054686A1
A method for producing a compound represented by formula (II), the method including a step in which a compound represented by formula (I) is heat-treated in the presence of an organic sulfonic acid and a solid inorganic oxide to obtain t...  
WO/2022/052222A1
Provided are a reaction system and method for preparing a glycolate by using oxalate hydrogenation. The reaction system comprises: a hydrogenation reactor, and a hydrogen feed pipe. The side wall of the hydrogenation reactor is provided ...  
WO/2022/053357A1
The invention pertains to an improved process for preparing vanillin (meth)acrylates and derivatives or structurally related compounds thereof in high purity. In addition, the present invention relates to ethyl vanillin (meth)acrylate, w...  
WO/2022/054894A1
The present disclosure addresses the problem of providing a new method by which an acrylic acid derivative can be produced at high conversion ratio and/or high yield. This problem can be solved by a production method of an acrylic acid d...  
WO/2022/052223A1
An intensified microinterface preparation system and method for polyglycolic acid. The intensified microinterface preparation system comprises: a hydrogenation reactor, a hydrogen feed pipe, a hydrolysis reactor, and a water vapor feed p...  
WO/2022/049740A1
A carboxylate ester production catalyst comprising: catalyst particles including at least one element selected from the group consisting of nickel, cobalt, palladium, lead, platinum, ruthenium, gold, silver, and copper; and a carrier tha...  
WO/2022/049387A1
A process for refining a crude ethylene glycol stream comprising monoethylene glycol and at least one acid contaminant is disclosed. The process comprises reacting the acid contaminant with the monoethylene glycol in at least one reactio...  
WO/2022/049036A2
The present invention relates to the field of perfumery. More particularly, it concerns valuable new chemical intermediates for producing perfuming ingredients. Moreover, the present invention comprises also a process for producing compo...  
WO/2022/041462A1
A synthesis method for a cyclopropane compound. The cyclopropane compound has a structure as represented by general formula (I). The synthesis method comprises: reacting an olefin compound A with ethyl diazoacetate under the catalysis of...  
WO/2022/039241A1
The present disclosure addresses the problem of providing a method for purifying an acrylic acid ester compound. This problem can be solved by a method for purifying a compound represented by formula (1) [in the formula, R1 and R2 may be...  
WO/2022/038224A1
A method for the preparation of an alpha-substituted carbonyl compound or an alpha- substituted nitrile compound carrying an aryl or heteroaryl group as an alpha-substituent, said method comprising reacting a sulfoxide compound S1 compri...  
WO/2022/039238A1
The present invention addresses the problem of providing a method for purifying a halogen-containing (meth)acrylate, said method being capable of removing an alcohol to a high degree. The problem is able to be solved by a method for puri...  
WO/2022/040318A1
The present invention relates to a method for the production of butanol using a titanium-based bimetallic heterogeneous catalyst comprising a support of titanium dioxide doped with cobalt cations and transition metal nanoparticles impreg...  

Matches 401 - 450 out of 78,725