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JP2766274B2 |
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JPH10505867A |
A method for oxidising liquid-phase hydrocarbons, alcohols or ketones in the presence of a heterogeneous catalyst. The method particularly enables the oxidation of a liquid-phase hydrocarbon, alcohol or ketone to carboxylic acid using mo...
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JP2761530B2 |
Isomerization of branched saturated alkyl carboxylic acids to linear or isomeric branched alkyl carboxylic acids, or vice versa, by heating in the presence of a iodide or bromide promoted rhodium catalyst and carbon monoxide.
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JPH10139717A |
To obtain the subject composition useful as an electrolyte solution for the driving of an electrolytic capacitor by using a useful new dibasic acid derived from a specific cyclohexanone compound. One or more kinds of compounds of the for...
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JP2756039B2 |
Waste nylon 6 and/or nylon 6,6 are converted to adipic acid monomer by depolymerization with an aliphatic monocarboxylic acid to form alkylamides followed by oxidation of the alkylamides to adipic acid.
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JPH10120616A |
To obtain a new dibasic acid capable of providing an electrolyte for working an electrolytic capacitor, having a low specific resistance and a high sparking voltage and hardly precipitating a crystal even at a low temperature by performi...
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JPH10114702A |
To separate an oxidation reaction product and an oxidation catalyst from an oxidation reaction mixture in high efficiency without causing the decomposition of the oxidation catalyst. A substrate (e.g. hydrocarbon) is oxidized by using an...
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JPH10109921A |
To prepare a detergent composition for hair excellent in foaming power, conditioning and antiseptic properties and further preservation stability by compounding a specific anionic surfactant with propionic acid or its salt. This detergen...
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JPH1067701A |
To obtain the subject compound in a high yield useful as a synthetic material by a catalytic oxidation of a C3 component. This objective malonic acid or its salt can be obtained by carrying out the catalytic oxidation of the C3 component...
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JP2713380B2 |
The present invention relates to an improved method for the preparation of dialkyl dichlorosuccinates which are useful intermediates in the preparation of anilinofumarates. Anilinofumarates are, in turn, used in the preparation of 2-(2-i...
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JPH1036310A |
To produce an organic acid solution with a concentration higher than the saturated solubility (molar concentration) of the corresponding organic acid salt by bipolar membrane electrodialysis. The production process for this organic acid ...
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JP2702591B2 |
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JP2697787B2 |
It is a process for producing trimellitic acid (trimellitic acid, 1, 2, 4-tricarboxylic acid) by oxidizing pseudocumene with a molecular oxygen containing gas. More particularly, pseudocumene is oxidized into trimellitic acid by introduc...
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JP2693774B2 |
Method of retarding plant growth comprises applying an effective amt. of cpd. of formula (I), R1 and R2 are independently a substd. or unsubstd. carbocyclic or heterocyclic ring system, Y1 and Y2 are independently a substd. or unsubstd. ...
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JPH09313951A |
To efficiently and easily separate and remove cobalt dissolved in a water phase (water extract) when a water-soluble carboxylic acid formed as a byproduct in a method oxidizing cyclohexane to produce cyclohexanone and cyclohexanol is ext...
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JP2683621B2 |
Process for preparing adipic acid or esters thereof by:- (1) reacting 1,3-butadiene with CO and water or an alcohol with formation of pentenoic acid or esters thereof in the presence of a first carbonylation catalyst comprising a Pd comp...
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JP2672398B2 |
PCT No. PCT/IT90/00073 Sec. 371 Date Jan. 29, 1992 Sec. 102(e) Date Jan. 29, 1992 PCT Filed Sep. 14, 1990 PCT Pub. No. WO91/01963 PCT Pub. Date Feb. 21, 1991.Sebacic acid and the pharmacologically acceptable derivatives thereof, such as ...
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JPH09510233A |
The present invention relates to optically active diphosphines. It is also targeted at their preparation according to a process for the resolution of the racemic mixture of the said phosphines to optically active isomers. The subject of ...
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JPH09509941A |
Cyclohexyladipates are formed in a staged reactor, e.g. a reactive distillation column. A mixture containing a major amount of benzene and a minor amount of cyclohexene is fed to the lower portion of the reaction zone and adipic acid is ...
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JPH09249685A |
To provide a novel compound which is prepared by polyfucosylating a specific dicarboxylic acid and has an inhibitory action against cell adhesion and is useful as a medicine or a diagnostic agent for diseases relating to cell adhesion me...
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JP2655014B2 |
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JPH09507850A |
Process for the preparation of a linear omega -formyl-carboxylic acid or a corresponding linear formylnitrile compound starting from an internally unsaturated C4-C12 carboxylic acid or a corresponding ester or nitrile by means of hydrofo...
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JPH09188648A |
To obtain a perfluorosuccinyl difluoride in high yield by carrying out a one-stage reaction for selecting a readily available and inexpensive (fluorosulfonyl)difluoroacetyl fluoride as a raw material and carrying out the pyrolytic coupli...
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JPH09136865A |
To provide the subject compound having excellent heat-insulation stability and useful as a synthetic intermediate for an antifogging agent for a silver halide photosensitive material, especially a thermally developing sensitive material....
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JP2608762B2 |
The invention concerns the use of a compound selected from aliphatic mono- and dicarboxylic acids having 7 to 13 carbon atoms, the salts thereof, the monogyceride and monosucrose esters thereof for the manufacture of a medicament for the...
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JPH09124542A |
To produce a solution of a dicarboxylic acid useful as a raw material for producing a copolyamide without producing a polycondensate even when water is contained at the time of storage for a long period and without causing decomposition ...
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JP2599570B2 |
PURPOSE: To efficiently prepare a carboxylic acid salt. CONSTITUTION: A process for preparation of a carboxylic acid salt which comprises bringing an aqueous solution of a primary alcohol into contact with an alkali metal hydroxide in th...
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JPH0995464A |
To reduce the amount of water used and thereby produce succinic acid with high productivity at a low cost without passing succinic anhydride through complicated crystallizing steps, etc., by hydrating the succinic anhydride at a temperat...
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JPH09503219A |
Method for the preparation of mono or di_2-substituted cyclopentanone characterized in that it consists in performing in sequence four stages (a) to (d) which can be successively carried out, if desired, in the same reactor: (a) addition...
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JP2590350B2 |
A process for the production of carboxylic acids by the hydrocarboxylation of olefinically unsaturated alkenes or esters using a rhodium catalyst, an iodide promoter, a solvent selected from the class consisting of methylene chloride, 1,...
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JP2585721B2 |
The preparation of adipic acid comprises the following steps: a) hydroformylation of pentenoic esters by reaction with carbon monoxide and hydrogen at elevated temperature and under elevated pressure in the presence of cobalt carbonyl or...
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JP2583545B2 |
The present invention provides pharmaceutical compositions containing at least one alpha -halogenated dicarboxylic acid of the general formula:- wherein Hal is a chlorine, bromine or fluorine atom, R is a hydrogen atom or Hal and m is a ...
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JP2581759B2 |
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JPH09501452A |
Ashless dispersants are formed using polymers of propylene characterized in that they are liquid substantially linear polymers, they have stereo-irregularity in the polymer chain, at least 60 mol percent of the polymer has a terminal vin...
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JPH0917892A |
PURPOSE: To provide a nonvolatile semiconductor memory device and manufacturing method thereof which is highly integrated, without having any contact holes whereby a high coupling ratio (Cox to Cono ratio) can be obtained. CONSTITUTION: ...
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JPH0912453A |
To provide a blend effective for superinfection without remarkably loosing biological bacterial florae on skin. This active material blend contains (I) 0.01-10wt.% α-ω-alkane dicarboxylic acid of the formula, HOOC-(CH2 )n -COOH [(n) is...
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JPH08325191A |
PURPOSE: To separate and recover a high purity polybasic organic acid in a good efficiency, at a low cost and with safety. CONSTITUTION: This method for separating and recovering a polybasic organic acid comprises passing a solution cont...
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JPH08325012A |
PURPOSE: To produce the grains having angular form and stabilized crystal structure by adding an aq. solution contg. oxalate ions, ammonium ions and hydrogen ions to a rare earth element salt aq. solution in an amount enough to provide s...
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JP2546830B2 |
Chiral diphosphinerhodium complexes of the formula in which X, Y and L are as defined in Claim 1 and their preparation are described.
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JP2544926B2 |
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JP2538516B2 |
PURPOSE: To obtain a treating agent for the skin wrinkled with sunstroke, etc. CONSTITUTION: This wrinkle treating agent contains a therapeutically effective amt. of a compd. selected from among 7-13C straight chain mono- or di- carboxyl...
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JPH08245611A |
To continuously prepare succinic anhydride with a long catalyst life without producing γ-butyrolactone, a monocarboxylic acid and a hydroxycarboxylic acid having a low number of carbon atoms by catalytically hydrogenating maleic anhydri...
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JP2535962B2 |
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JP2533060B2 |
PURPOSE: To provide a producing method of a dicarboxylic acid by which both of hydrolysis of a dicarboxylic acid ester and separation of an alcohol produced can be carried out. CONSTITUTION: This producing method for a dicarboxylic acid ...
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JP2530675B2 |
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JPH08225485A |
To provide a method for recovering adipic acid from an aqueous nitric acid mother liquor that arises during industrial adipic acid production by which the adipic acid of a comparatively elevated purity or technical glutaric acid can simp...
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JPH08198803A |
PURPOSE: To obtain a stable easily water-soluble composition comprising amorphous citric acid, an organic acid, calcium and magnesium, and to provide the method for producing the composition. CONSTITUTION: This composition is obtained by...
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JPH08193044A |
To provide a method for producing mono- or di-carboxylic acid in high yield and at high purity by oxidation of the corresponding aldehyde in a carboxylic acid under specific conditions in the presence of an oxidizing agent. This method i...
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JPH08506805A |
PCT No. PCT/FR93/01232 Sec. 371 Date Jul. 23, 1995 Sec. 102(e) Date Jul. 23, 1995 PCT Filed Dec. 10, 1993 PCT Pub. No. WO94/13616 PCT Pub. Date Jun. 23, 1994Process for the treatment of a material comprising a polymer, especially a polya...
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JP2512386B2 |
PURPOSE: To provide a hydroxycarbonylation method for converting various valerolactones and their isomers into corresponding dibasic acids by the reaction with carbon monoxide and water. CONSTITUTION: At least one kind of lactone having ...
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