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JP3056790B2 |
PCT No. PCT/FR95/00944 Sec. 371 Date Feb. 26, 1997 Sec. 102(e) Date Feb. 26, 1997 PCT Filed Jul. 13, 1995 PCT Pub. No. WO96/03365 PCT Pub. Date Feb. 8, 1996A process for recycling a catalyst containing cobalt including treating a reactio...
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JP3048644B2 |
Dicarboxylic acid and diamine are recovered from polyamides by hydrolysis with nitric acid, followed by separation of the dicarboxylic acid, and hydrogenation of the nitric acid, and then recovery of the diamine.
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JP3041223B2 |
To economically obtain a mono and dicarboxylic acid in good yield by two stage method subjecting an unsaturated fatty acid of rapeseed oil, sunflower oil, etc., or its derivative to oxidation controlled with H2O2 in the presence of a met...
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JP2000103760A |
To obtain adipic acid in a high yield by oxidizing hydroxycaproic acid and/or -caprolactone with oxygen or an oxygen-containing gas in the presence of a platinum group metal as a catalyst.This method for producing adipic acid comprises o...
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JP2000095724A |
To produce a dicarboxylic acid in high yield by reacting an unsaturated monocarboxylic acid ester with carbon monoxide in an acid in the presence of a univalent compound of a group IB metal and contacting the reaction product with water....
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JP2000086574A |
To produce carboxylic acids in excellent yield and selectivity even if the hydrogen peroxide solution as an oxidant is in a low concentration by carrying out an oxidation reaction of an olefin by using a specific catalyst. (A) An olefin ...
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JP2000503343A |
Electrolytic hydrodimeric coupling of dialkyl maleates in alkanol solutions containing an alkanol-soluble alkali metal alkoxide/quaternary ammonium tetrafluoroborate mixed supporting electrolyte yields tetraalkyl 1,2,3,4-butanetetracarbo...
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JP3015018B1 |
A method of recovering adipic acid and 6-hydroxycaproic acid from the waste solution of alkali metal salts of organic acids coming from the process of cyclohexane oxidation, which comprises: (i)basifying the reaction mixture coming from ...
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JP2000044512A |
To provide a method for industrially advantageously producing 1,2,4- butanetricarboxylic acid at high selectivity and high yield. 1,2,4-Butanetricarboxylic acid is obtained by subjecting 2-methylene diglutarate to cyanolysis in the prese...
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JP2998850B2 |
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JP2995206B2 |
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JPH11322674A |
To obtain the new compound having excellent long term stability and excellent high temperature stability, having high solubility in alcoholic solvents and useful as a raw material for synthesizing glycidyl esters, polyamides, polyesters,...
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JPH11315047A |
To provide a method for synthesizing a carboxylic acid by reacting a synthesis raw material selected from an alcohol, an olefin and a diene with carbon monoxide in the presence of a solid acid catalyst, capable of producing the carboxyli...
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JPH11512142A |
The invention provides alkenyl-substituted dicarboxylic derivatives, having (a) an alkenyl group derived from an atactic propylene oligomer substantially of the formula (I) where n is in the range 15 to 120, having number average molecul...
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JPH11279110A |
To obtain the subject compound, useful as a stock for medicines and agrocbemicals, efficiently from a readily available, inexpensive stock by a simple procedure by reacting a specific substituted propanediol with an oxygen-containing gas...
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JP2955022B2 |
Copper and vanadium catalyst components are recovered and dialkyl esters of dicarboxylic acids are synthesized by precipitating the catalyst metals with an alcohol selected from the group consisting of methanol, ethanol, and isopropanol ...
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JPH11263744A |
To provide a method for obtaining high-purity dichlorofluoroacetyl fluoride while suppressing the formation of an undesirable by-product. This method for producing dichlorofluoroacetyl fluoride (CFCl2COF) comprises steps of (a) the fluor...
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JPH11246480A |
To produce a new malonic acid compound capable of readily being produced at a low cost without the problem of waste material, and useful as a production raw material for a fluorine-containing carboxylic acid by introducing a specific flu...
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JP2944157B2 |
A process for preparing a carboxylic acid of high purity comprises preparing an undersaturated solution of a salt of the carboxylic acid; subjecting the undersaturated salt solution to water-splitting electrodialysis to form base and a s...
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JPH11209828A |
To provide the method for recovering a high-purity rare-earth oxide by a simple process. Oxalic acid is added to a soln. where the material contg. the rare-earth element and zinc is dissolved in strong acid to precipitate the rare- earth...
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JP2915309B2 |
The subject of the present invention is a process for the preparation of an iridium-based solution in which at least one oxide or hydroxide, which may or may not be hydrated, of iridium, or a mixture thereof, is brought into contact, in ...
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JPH11507350A |
A completely solubilized alcohol-free topical composition of azelaic acid in a glycol base which is stable at normal temperatures and which is useful as a commercial substitute for dispersed azelaic acid preparations. The composition has...
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JPH11158110A |
To obtain an iron phosphate compound having a catalytic function or the like. This compound is an iron phosphate-oxalic acid composite compound shown by the general formula FePO4.x(H2O)2.y(COX)2 (X is a hydroxyl, alkoxyl or O-M group; M ...
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JP2896507B2 |
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JP2895233B2 |
PCT No. PCT/FR93/01028 Sec. 371 Date Jul. 11, 1995 Sec. 102(e) Date Jul. 11, 1995 PCT Filed Oct. 19, 1993 PCT Pub. No. WO94/08939 PCT Pub. Date Apr. 28, 1994The present invention relates to a process for the hydroxycarbonylation of pente...
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JP2893464B2 |
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JP2889702B2 |
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JP2889914B2 |
The invention refers to a novel process for the recovery of gadolinium and its complexing agent from aqueous solutions containing their complexes and/or salts of said complexes.
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JPH11116528A |
To economically and industrially obtain the subject compound useful for an intermediate in organic synthesis, alkyd resin, etc., in high yield by reacting a tricyanobutane with an alcohol so as to synthesize the corresponding ester compo...
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JP2876550B2 |
Conversion of certain lactones by reaction with carbon monoxide and water, in the presence of a homogeneous rhodium catalyst and an iodide or bromide promoter, to produce adipic acid.
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JP2872723B2 |
A process for producing and purifying succinic acid comprises growing a succinate salt-producing microorganism on an inexpensive substrate containing carbohydrate, other nutrients, sodium ions and tryptophan under a CO2 partial pressure ...
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JPH1177064A |
To provide a method which can treat a waste solution containing ammonium adipate by the used of sulfuric acid and sodium hydroxide, which are easily available and economical, by a simple process and convert recovered adipic acid and ammo...
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JPH1177063A |
To highly efficiently recover an adipic acid component and an ammonium component by adding a calcium source to an ammonium adipate-containing waste soln. to make the waste soln. weak alkaline and separating generated ammonia gas while su...
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JPH1177065A |
To provide a method which removes adipate ions and ammonium ions efficiently from a waste solution containing ammonium adipate generated in the chemical treatment of aluminum and in other cases to convert the waste solution into safe dra...
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JPH1180072A |
To obtain the subject highly pure compound useful as a rust-preventive agent by gradually adding the aqueous solution of a lower saturated aliphatic carboxylic acid to the aqueous solution of hydroxylamine under stirring in a reaction sy...
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JP2869529B2 |
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JPH1160568A |
To provide a method for producing a high-purity alkenylsuccinic anhydride hardly colored, having low viscosity and 1:1 molar ratio of butene oligomer to maleic anhydride. In a method for producing an alkenylsuccinic anhydride by reacting...
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JP2856849B2 |
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JP2852801B2 |
A four step process for transforming (2S,3S)-2-amino-3-phenyl-1,3-propanediols into their (2R,3R)-enantiomers is described. The final compounds are useful intermediates for the synthesis of antibiotics like Chloramphenicol, Thiamphenicol...
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JP2843679B2 |
PCT No. PCT/AU94/00433 Sec. 371 Date Jan. 26, 1996 Sec. 102(e) Date Jan. 26, 1996 PCT Filed Jul. 29, 1994 PCT Pub. No. WO95/04026 PCT Pub. Date Feb. 9, 1995Compounds of general formula (I) (I) characterised in that R1 and R2 are independ...
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JPH10324659A |
To obtain the subject compound useful as an intermediate for agricultural and horticultural chemicals and medicines by an alkali saponification of a 1-4C alkyl ester corresponding to the subject compound in alkalinity under a specific co...
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JP2825677B2 |
A process for the hydrocarboxylation of alkenes and non-conjugated olefinically unsaturated nitriles and esters using a rhodium catalyst, a bromide or iodide promoter, and a nitrile accelerator.
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JP2821725B2 |
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JPH10291978A |
To obtain a separating agent for separating polybasic carboxylic acids by disposing two or ore specific forming potions in a compound. This agent for separating polybasic carboxylic acids comprises a compound having two or more coordinat...
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JPH10510808A |
Crystallization of adipic acid using low intensity ultrasonic agitation during crystallization results in purer product that is more readily handled. Apparatus for carrying out the process is also disclosed.
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JP2805455B2 |
At least a fraction of at least one branched, saturated aliphatic diacid having 6 carbon atoms, for example 2-methylglutaric acid and/or 2-ethylsuccinic acid and/or dimethylsuccinic acid, is separated from admixtures thereof with adipic ...
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JPH10237032A |
To obtain the subject new compound excellent in biodegradability and in metal-making ability and useful as an additive for photographic treatments. A compound of formula I [R1, R2 are each H, an alkyl, an aryl, a heterogeneous ring, carb...
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JPH10509146A |
Inhibitors for matrix metalloproteases, pharmaceutical compositions containing them, and a process for using them to treat a variety of physiological conditions. The presently claimed compounds have the generalized formula in which each ...
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JPH10218836A |
To produce malonic acid and an alkylmalonic acid in high yields without generating salts by bringing an aqueous mixture of an ester into contact with a specific acidic ion-exchanger, distilling away the alcohol produced at the time, remo...
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JPH10204074A |
To provide a method for producing succinic anhydride at a low cost by which the succinic anhydride is produced extremely at a high conversion and the catalytic activity is maintained at a high level for a long time. Maleic anhydride is c...
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