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WO/2021/068658A1 |
The present invention relates to an active ester compound and a preparation method therefor. A circuit substrate prepared by using the active ester compound as a curing agent has excellent heat resistance and flame retardance, has a rela...
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WO/2021/070208A1 |
The present invention concerns a method to prepare and purify the ester glyceryl-tris-(3 -hydroxy butyrate) of formula (I) and its optically active isomers, in particular the enantiomer (R, R, R).
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WO/2021/070209A1 |
The present invention concerns a method to prepare and purify the ester glyceryl-tris-(3 -hydroxybutyrate) of formula (I): and its optically active isomers, in particular the enantiomer (R, R, R).
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WO/2021/063831A1 |
The invention relates to a process for the oxidation of santalene to santalol. The starting mate- rial is in particular a mixture comprising alpha-santalene, beta-santalene, epi-beta-santalene, trans-alpha-bergamotene and beta-bisabolene...
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WO/2021/065908A1 |
The present invention addresses the problem of providing a method for highly efficiently producing a propionic acid derivative. The problem can be solved by a method for producing a compound represented by formula (1) (wherein R1 is a ha...
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WO/2021/058292A1 |
The present invention relates to a bio-based acrylate monomer having a structure, wherein R1 is H or -CH3, and wherein R2 is linear C1-C10 alkyl or branched C3-C10 alkyl.
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WO/2021/060276A1 |
Provided, inter alia, is a fluorinating agent that can selectively produce a monofluorination product through preferential synthesis of the monofluorination product over a difluorination product, in a fluorination reaction in which a flu...
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WO/2021/060749A1 |
The present invention relates to a preparation system for a diester-based composition, having a serially connected plurality of reactors, in which the overall process efficiency is increased by integrating reflux units.
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WO/2021/058314A1 |
The invention relates to a method for producing alkyl methacrylates, in particular methyl methacrylate (MMA), comprising the production of methacrolein (MAL) in a first reaction stage, direct oxidative esterification (DOE) of the methacr...
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WO/2021/060746A1 |
The present invention relates to a method for continuously preparing a dicarboxylate-based composition, and a preparation system therefor, the method increasing a preparation yield by optimizing, in a reaction unit in which a plurality o...
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WO/2021/058875A1 |
Herein is provided a process for producing renewable products, such as a renewable base oil, from a feedstock of biological origin. The process comprises subjecting a feedstock comprising free fatty acids and fatty acid glycerides, where...
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WO/2021/060861A1 |
The present invention relates to a preparation method comprising the steps of: mixing dicarboxylic acid and a monoalcohol having 4 to 10 carbon atoms to prepare a raw material mixture (S1); and subjecting the raw material mixture to a re...
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WO/2021/058876A1 |
Herein is provided a process for producing renewable products, such as alkenes, from a feedstock of biological origin. The process comprises subjecting a feedstock comprising fatty acid glycerides and optionally free fatty acids, wherein...
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WO/2021/058877A1 |
Herein is provided a process for combined renewable 1-decene and renewable carboxylic diacid production from a fatty acid ester containing feedstock, wherein the feedstock is first subjected to metathesis reaction conditions, recovery of...
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WO/2021/060777A1 |
The present invention relates to an esterification apparatus and an esterification method, and the esterification apparatus according to the present invention comprises: a reaction tank in which an accommodation part for accommodating a ...
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WO/2021/061969A1 |
Control methods are disclosed for continuous, unmodulated, multiple catalytic conversion step processes using at least two catalysts, a first catalyst and a second catalyst, that accommodate changes in the performance of each catalyst an...
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WO/2021/058293A1 |
The present invention relates to a novel process for purifying, by distillation, methyl methacrylate impurified with low-boiling components, said MMA having been produced using oxidative esterification and, as the crude product, contains...
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WO/2021/054606A1 |
The present invention pertains to a method for hydrogenating a phthalate compound. Specifically, an embodiment of the present invention provides a method for obtaining a hydrogenation reaction product having an aromaticity controlled to ...
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WO/2021/054309A1 |
The present invention addresses the problem of providing a novel method for industrially stably producing an aromatic bisether compound at a high yield. As a solution to the problem, provided is a production method that is for an aromati...
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WO/2021/054583A1 |
To address the above-described problem, a neutralization/water separation tank for an esterification product, according to an embodiment of the present invention, comprises: a neutralization unit into which a crude product mixture compri...
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WO/2021/054584A1 |
To address the aforesaid issues, an apparatus for neutralization/water removal of esterification products according to one embodiment of the present invention comprises: a neutralization tank in which a neutralizing agent, water, and a c...
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WO/2021/052353A1 |
The present invention relates to the technical field of enzyme inhibitors, and relates in particular to a hydroxamic acid derivative, a preparation method therefor and an application thereof. The hydroxamic acid group in the hydroxamic a...
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WO/2021/048364A1 |
A process for manufacturing a substituted cyclohexanecarbonitrile said process comprising the following steps: - reacting the corresponding substituted cyclohexanecarboxylic acid with thionyl chloride to make the corresponding acyl chlor...
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WO/2021/043868A1 |
The present invention relates to catalytically active material, comprising grains of non-graphitizing carbon with nickel nanoparticles dispersed therein, wherein dp, the average diameter of nickel nanoparticles in the non-graphitizing ca...
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WO/2021/043861A1 |
201900257 Ausland 18 Abstract The present invention relates to catalytically active material, comprising grains of non-graphitizing carbon with iron nanoparticles dispersed therein, wherein dp, the average diameter of iron nanoparticles ...
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WO/2021/043858A1 |
The present invention relates to catalytically active material, comprising grains of non-graphitizing carbon with cobalt nanoparticles dispersed therein, wherein dP, the average diameter of cobalt nanoparticles in the non-graphitizing ca...
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WO/2021/038637A1 |
Provided are: a novel vitamin A derivative which is useful as a medicinal drug and a cosmetic and which comprises a compound represented by formula (I) or formula (II) (in the formulae, R1 and R2 each independently denote a hydrogen atom...
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WO/2021/035282A1 |
The present disclosure relates to the field of chemical compounds, compositions and processes. More specifically, the present disclosure relates to compositions having a high-loading capacity in an aqueous medium and to compositions, pro...
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WO/2021/039558A1 |
The present invention addresses the problem of providing: a phenolic resin which has excellent flowability and gives cured objects having an excellent balance among high-temperature modulus, low hygroscopicity, and dielectric properties ...
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WO/2021/037660A1 |
The present invention relates to a process for preparing methylmethacrylate by direct oxidative esterification of methacrolein. Methylmethacrylate is used in large amounts with other polymerizable compounds for preparing polymers and cop...
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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/2021/032675A2 |
The present invention relates to a compound of the following formula (I): in which: - R1, R2, R3 and R4 are, independently of one another, H or a (C1-C30)alkyl group, the total sum of the number of carbon atoms of R1, R2, R3 and R4 being...
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WO/2021/031193A1 |
Provided is a modified mordenite molecular sieve and a preparation method therefor. When the number of acid sites of a twelve-membered ring in the modified mordenite molecular sieve is less than or equal to 0.2 mmol/g, the number of acid...
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WO/2021/031246A1 |
The present application discloses a method for preparing a chiral β-hydroxylcarboxylate compound, involving firstly dissolving a dichlorophenyl ruthenium dimer, a ligand and an alkaline additive in a solvent under the protection of an i...
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WO/2021/032821A1 |
Method for depolymerising terephthalate polymer into reusable raw material, the method comprising steps of: depolymerizing terephthalate polymer by using ethylene glycol into a depolymerised mixture comprising at least one monomer and at...
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WO/2021/031168A1 |
Provided is a continuous synthesis method for a 2-fluoromalonic acid diester compound. The method comprises: using (I) as a raw material, and carrying out continuous decarbonylation reaction in a continuous reaction device to obtain 2-fl...
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WO/2021/032826A1 |
The invention relates to a solid composition comprising at least 90.0 wt.% bis(2-hydroxyethyl) terephthalate (BHET), as based on dry weight and having a pore volume in the range of 0.20 to 1.0 cm3/g. The porosity is above 25% or even abo...
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WO/2021/029395A1 |
A compound which has one or more halogen atoms and an unsaturated double bond. A method for producing an iodine-containing vinyl monomer, said method comprising: (a) a step for preparing an iodine-containing alcoholic substrate having a ...
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WO/2021/024135A1 |
The present invention relates to an improved processses for synthesizing preparing substituted cyanophenoxy-pyrimidinyloxy-phenyl acrylate derivatives. The present invention specifically relates to an improved process for the preparation...
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WO/2021/026159A1 |
Purification methods and systems for working up a crude vinyl acetate stream containing vinyl acetate monomer, acetic acid, water, ethyl acetate, and other impurities. Crude vinyl acetate streams are purified with an azeotropic distillat...
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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/2021/014988A1 |
[Problem] To provide a method for producing an α-acyloxy carboxylic acid ester, said method being efficient and excellently economical. [Solution] A method for producing an α-acyloxy carboxylic acid ester represented by formula (1), wh...
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WO/2021/009366A1 |
The invention discloses the use of a short path evaporator for decolorization of colorized acetoacetylated ethylene glycol.
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WO/2021/009627A1 |
Disclosed are processes for producing ethylene. The processes can include contacting a first stream containing methane with an oxidant and oxidizing at least a portion of the methane under conditions suitable to produce a second stream c...
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WO/2021/009002A1 |
The present invention concerns new stable compositions of 1-Z-bromoalk-1-ene compounds of general formula (A). These compositions are characterized in that they also comprise either at least one cyclic ether compound comprising between 4...
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WO/2021/010363A1 |
The present invention addresses the problem of providing a novel method for producing binaphthyls, said method having good reaction efficiency and being capable of easily removing an inorganic salt. The present invention provides, as a m...
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WO/2021/004947A1 |
The invention discloses a method for preparation of acetoacetate ester compounds with amino alcohol catalysts which are themselves diketenized in the course of the diketenization reaction; and subsequent polymerization of these acetoacet...
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WO/2021/004070A1 |
The invention relates to a recovery method for a waste polyester material, in particular to a method for preparing dimethyl terephthalate (DMT) by recycling using a chemical method, belonging to the technical field of recovering waste po...
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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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