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JP3243627B2 |
PURPOSE: To obtain 1,2,3,4-butanetetracarboxylic acid repeatedly in high yield by efficiently separating and recovering a catalyst and reusing it in oxidizing tetrahydrophthalic acid anhydride with hydrogen peroxide. CONSTITUTION: Tetrah...
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JP3242988B2 |
PURPOSE: To provide an economically excellent method for producing adipic acid by using cyclohexene oxide as a raw material. CONSTITUTION: In producing adipic acid by oxidizing cyclohexene oxide, adipic acid is produced by two processes ...
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JP2001524608A |
Process to separate rhodium from an organic starting mixture comprising of an organic solvent, C6-dicarboxylic acids and iodide compounds, wherein rhodium is separated by extracting the organic starting mixture with an aqueous solvent co...
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JP3228695B2 |
To prepare a solid catalyst for carrying out an etherification reaction simply and efficiently by molecular orbital computation without necessity of carrying out complicated experiments. An solid catalyst for etherification reaction comp...
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JP2001302597A |
To establish a method for recovering raw material components such as monomers from nylon 6, 6 having high practicality and capable of increasing production amounts of raw material components by promoting hydrolysis of oligomers and capab...
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JP2001302558A |
To provide a method for producing a metal complex in which a ligand can rapidly be coordinated with a substitution-inactive metal ion to obtain the metal complex in high yield. This method is to produce an organic ligand-containing metal...
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JP3223112B2 |
To obtain a compound advantageously in terms of economic and environmental aspects by reacting a carboxlic acid with a haloiminium salt. (A) A carboxlic acid containing a hydroxyl group and/or amino group (e.g. 5-amino-2,4,6-triiodoisoph...
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JP2001517647A |
This invention relates to methods and devices for removing acetic acid from cyclohexane in the direct oxidation of cyclohexane to adipic acid, especially after recycling catalyst which is precipitated by introduction of additional cycloh...
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JP2001517225A |
Processes for preparing compounds of the formula (I) are described: P1OOC-CH(OH)-CHR1-CONH-Z wherein P1 is hydrogen or a protecting group, Z is a group -CHR2COOP2 or -CHR2CONR3R4 wherein P2 is hydrogen or a protecting group and R1-R4 are...
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JP2001516734A |
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to intermediate oxidation products, such as adipic acid for example, by removing the catalyst from the reaction mixture, outside the reac...
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JP2001516733A |
This invention relates to methods of recycling catalyst in oxidations of hydrocarbons, such as cyclohexane for example, to respective intermediate oxidation products, such as adipic acid for example, by a direct process. The catalyst rem...
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JP2001253845A |
To provide a producing method for obtaining dibasic acids simultaneously comprising glutaric acid and succinic acid in addition to adipic acid as a principal reaction product with high selectivity by oxidizing cyclohexanone with molecula...
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JP2001514192A |
The invention relates to a method for isolating anionic organic substances from aqueous systems using polymer nanoparticles with cationic pH-sensitive surface groups. Extraction can be carried out directly from diluted solutions, biologi...
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JP2001246254A |
To produce a novel palladium-rhenium catalyst having rhenium extremely uniformly distributed and carried on a coal, coconut or peat type activated carbon as a carrier and having a good hydrogenation capability for dicarboxylic acids and ...
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JP2001511809A |
A process for producing a cleaved product from castor oil, or derivatives thereof, by high temperature caustic oxidation reaction accomplished by combining at least one chemically inert heat transfer fluid, a catalyst, and an alkali in a...
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JP3197518B2 |
To provide a process for treatment of a reaction mixture obtained from the oxidation process of cyclohexane to adipic acid. This process relates to the treatment of a reaction mixture obtained from direct oxidation of cyclohexane to adip...
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JP2001213840A |
To provide a method for producing adipaldehyde acid, suitable for industrially carrying out the production in the field of separation of a catalyst from the product and the unreacted raw material, and from the viewpoint of the repeated u...
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JP2001510817A |
This invention relates to methods and devices of preparing acids, such as adipic acid for example, by oxidizing a hydrocarbon, such as cyclohexane for example, with a gas containing an oxidant, preferably oxygen. A respective hydrocarbon...
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JP2001508048A |
Methods for oxidizing a hydrocarbon to an intermediate oxidation product by utilizing an activated initiator. The initiator is activated by partially oxidizing a first mixture of the initiator and a hydrocarbon, which mixture contains a ...
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JP2001164239A |
To provide an aqueous dispersion for chemically machine polishing that can polish the processed membranes in the semiconductor devices at a sufficient speed, particularly in the polishing of copper membranes.This chemically machine-polis...
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JP2001507713A |
The present invention relates to a novel class of compounds for treating hyperlipidemia, obesity and impaired glucose tolerance/noninsulin dependent diabetes mellitus without adversely affecting energy metabolism, and pharmaceutical comp...
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JP3174305B2 |
A process for preparing an oligomeric copolymer of an unsaturated acidic reactant and a high molecular weight olefin having a sufficient number of carbon atoms such that the resulting copolymer is soluble in lubricating oil and wherein a...
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JP2001135636A |
To provide chemical solution to form an oxide coating that has an improved insulation property and cannot cause hillocks to be generated easily while the chemical solution is used for the anode oxidation of metal, especially aluminum and...
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JP2001131112A |
To provide an industrially advantageous method without emitting harmful substances such as N2O, NOX, etc., in a method for producing adipic acid and an aromatic carboxylic acid. An aromatic aldehyde and cyclohexane are cooxidized with mo...
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JP2001131115A |
To provide a method of manufacturing for an adipate of 1,3-bis(aminometyl)cyclohexane having high concentration of cis isomer by using 1,3-bis(aminometyl)cyclohexane which is a mixture of cis and trans isomers and adipic acid as raw mate...
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JP2001506235A |
Substantially anhydrous nylon salts are made in a solid state process in which solid diamine carbamates are contacted and mixed with solid dicarboxylic acids in a near instantaneous reaction to produce the salt, and preferably are prepar...
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JP2001505918A |
A method of making high purity acids and their derivatives, particularly citric acid and ammonium citrate. These purified compositions are useful in the manufacture of integrated circuits for the semiconductor industry. Purification is d...
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JP2001504115A |
Methods and devices for controlling the oxidation of a hydrocarbon to an acid by regulating the temperature hold-up time, and conversion in consecutive reaction zones. The temperature in the consecutive reaction zones progressively decre...
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JP2001503758A |
Methods for controlling the oxidation rate of a hydrocarbon to an acid by adjusting addition of a rate-modulator are disclosed. In order to control oxidation rate, the ratio of hydrocarbon to rate modulator is appropriately adjusted. Pre...
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JP2001072642A |
To obtain a dicarboxylic acid in high yield by subjecting a long-chain saturated dicarboxylic acid and an unsaturated fatty acid to the cleavage of fatty acid and the oxidative ozonolysis, dissolving a mixture of medium-chain carboxylic ...
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JP2001503425A |
This invention provides a process for the preparation of adipic acid from pentenoic acids or esters of pentenoic acids by hydrocarboxylation of a reaction mixture in which gamma-valerolactone constitutes 30 to 70% by weight of the reacti...
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JP2001057320A |
To prevent the damage of the case of an electrolytic capacitor and reduce the change of the electric characteristic of its electrolyte, by using a solvent having as the main component thereof an organic solvent, and by dissolving as its ...
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JP3132745B2 |
PURPOSE: To obtain a novel flux composition for soldering electronic components onto printed circuit boards. CONSTITUTION: The novel flux composition contains pimelic acid, a first solvent, such as, for example, isopropyl alcohol, which ...
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JP2000336058A |
To selectively obtain a carboxylic acid not followed by a problem such as corrosion of facilities, etc. without using a solution of strong acid.At least one synthetic raw material selected from the group consisting of an alcohol, an olef...
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JP2000327623A |
To obtain high-purity brassylic acid useful as raw materials of perfumes or flavors and free from offensive odor in high yield relatively easily by recrystallizing it using butyl acetate as a solvent in the purification of fermented bras...
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JP2000302724A |
To obtain an α,ω-dicarboxylic acid useful as a cross-linking agent in a coating material composition by purifying the α,ω-dicarboxylic acid produced by a fermentation method of a normal paraffin as a raw material until the nitrogen c...
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JP2000297063A |
To obtain a difunctionalized 6C-hydrocarbon by an economically excellent reaction path by subjecting one or more two kinds of specific olefins to self double decomposition or cross double decomposition in the presence of a homogeneous ca...
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JP2000512638A |
Optically active carboxylic acids, salts or esters, such as the profen-type compounds, are racemized in the presence by nitrogenous bases such as methylbenzylamine by heating an aqueous solution of such optically active compounds in the ...
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JP3091493B2 |
A method for isomerising carboxylic acids and particularly branched acids into the corresponding straight acids. In particular, the method is for isomerising at least one branched saturated carboxylic acid by heating it in the presence o...
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JP3085776B2 |
In a novel process for the recovery of adipic acid from the aqueous mother liquor, arising in the industrial manufacture of adipic acid, by selective crystallisation of the dissolved adipic acid, such a quantity of an aqueous adipic acid...
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JP3086564B2 |
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JP3084072B2 |
A physical mixture which consists essentially of compositions of lysine monohydrochloride and potassium chloride alone or admixed with small amounts of succinic acid, in particular weight ratios, and which has a salty taste comparable to...
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JP2000226379A |
To obtain a derivative of a substituted 2,4-thiazolidione free from effect on insulin serection, having an action on insulin resistance, free from hepatotoxic action, having activity against diabetic not accompanying hyperinsulinism and ...
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JP2000219898A |
To produce a cobalt soap desirable in transportation, handling properties, and forming and processing properties, and having the high softening point by bringing an oxidative gas or an oxidizer into contact with the cobalt soap having a ...
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JP3073961B2 |
A process for the oxidation of hydrocarbons, alcohols and/or ketones to carboxylic acids using O2, or an O2-containing gas, in the liquid phase and in a polar protic or aprotic solvent in the presence of a soluble catalyst. This comprise...
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JP2000212124A |
To obtain a new compound for providing a 3-(2-chloro-2- fluorovinyl)-2,2-dimethylcyclopropanecarboxylic acid ester derivative by reacting the compound with a base. This compound is shown by formula I (R is a lower alkyl or H) such as met...
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JP3067809B2 |
The present invention generally relates to a process for producing Compounds of formula I: wherein D, X, A, and n are defined herein.
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JP3066155B2 |
A process for working up mother liquors resulting from the preparation of adipic acid by oxidation of cyclohexanol or cyclohexanone or mixtures thereof with nitric acid entails removal of nitric acid by azeotropic distillation with water...
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JP3062584B2 |
PCT No. PCT/US91/06449 Sec. 371 Date Sep. 9, 1991 Sec. 102(e) Date Sep. 9, 1991 PCT Filed Sep. 9, 1991 PCT Pub. No. WO93/05007 PCT Pub. Date Mar. 18, 1993.Zeolites, particularly X type zeolites, essentially irrespective of the cation the...
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JP3059695B2 |
The preparation of diacids from washing water of cyclohexane oxidation products comprises (a) removing the peroxide of the washing water by catalytic hydrogenation at 0-100 degrees C, in a continuous mode in a catalytic hydrogenation rea...
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