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JPH0240651B2 |
In a process for the continuous preparation of adipic acid by hydrolysis of C1-C4-alkyl adipates with water at an elevated temperature in the presence of a strongly acidic ion exchanger, the improvement that the esters and excess water a...
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JPH0238578B2 |
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JPH02169524A |
PURPOSE: To recover an organic acid with a simple installation by a simple method in a relatively short time and at a low cost by bringing an organic acid-containing solution into contact with a polyamino group-having ion exchange resin ...
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JPH02131493A |
NEW MATERIAL:A compound expressed by formula I or II [R1 is H, -COR', -COOR", -CONHR''', -SO2R4' or -PO(R5')2 (R' to R5 are alkyl or aryl); R2 is phenyl having 1-3 substituent groups, such as lower alkyl or alkoxy; R3 is cyclohexyl]. EXA...
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JPH0222056B2 |
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JPH02121946A |
PURPOSE: To continuously produce succinic acid useful as a seasoning in high yield at a low cost by using an aqueous solution of maleic acid having a specific concentration, supplying the solution to a fixed bed packed with a noble metal...
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JPH0299519A |
PURPOSE: To provide a partially fluorinated compound which is effectively used as a chemical intermediate for improving the stability in thermal oxidation and the solvent resistance, when it is included in a polymer, by bringing a partia...
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JPH0286679A |
PURPOSE: To prevent an undesirable influence on a substrate such as a plastic resin, a skin of a hematerm or the like received from ultraviolet rays by blending a specific compound and a carrier. CONSTITUTION: This composition is provide...
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JPH0248550A |
PURPOSE: To obtain a compound by a method in which an adipic acid halide is halogenated and esterified, a by-produced acid compound is brought into contact with the mixture of a racemic-form and a meso-form, the meso-form is crystallized...
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JPH0232037A |
PURPOSE: To directly obtain diammonium salt of long-chain dibasic acid useful for electrolysis solution for driving electrolytic condenser containing a slight water by dissolving long-chain dibasic acid in polyhydric alcohol containing s...
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JPH0217147A |
NEW MATERIAL: Compounds given by formula I [Y is OR1 (R1 is H or 1-4C alkyl), Cl, CH3, formula II (R2 is 1-4C alkyl), formula III (R3=R2) or formula IV; X is F, Cl, or Br; when Y is OH, X ≠ Br, when Y is CH3, X ≠ F is excluded; only ...
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JPH026427A |
PURPOSE: To simultaneously and efficiently obtain a dicarboxylic acid and a formylcarboxylic acid from an unsaturated carboxylic acid, carbon monoxide, hydrogen and water by reacting the raw materials in the presence of cobalt catalyst b...
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JPH026412A |
PURPOSE: To produce the subject compd. useful as an acylating agent in high purity from a carboxylic acid and inorg. acid halide by using a Mg halide or Mg in a form capable of being halogenated or a metal similar to Mg as a catalyst. CO...
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JPH0154334B2 |
Process for the concurrent preparation of olefinically unsaturated or saturated alpha , omega -dialdehydes and alpha , omega -diacids, characterized by the fact that the monoozonide of a a mono- or polyunsaturated cycloolefine in solutio...
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JPH0151942B2 |
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JPH0151153B2 |
A process and a binder composition for extending the induced plasticity of a particulate ceramic material mixture with uranium dioxide and a volatile binder and the product thereof for subsequent compaction by compression-moulding in the...
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JPH01249733A |
NEW MATERIAL: A compd. of formula I [R1 to R3 and R6 are each (CH2)nCOOH, (CH2)nCOOR7. (CH2)nOCO(CH2)m, (CH2)nOH or (CH2)nCOH; R4, R5 and R7 are each 1-10C alkyl; (n) and (m) are an integer from 0 to 10; (p) is an integer from 9 to 13] a...
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JPH01502821A |
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JPH0142254B2 |
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JPH0142253B2 |
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JPH01224092A |
PURPOSE: To efficiently recover relatively expensive adipic acid from waste liquor and to reutilize the acid by adding a specified chloride and a specified ammonium salt to the waste liquor in an acidic state to cause complex action. CON...
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JPH0141155B2 |
NEW MATERIAL:A complex compound of calcium octaphosphate and an organic acid expressed by the formula (R is methylsuccinic ion, citraconic acid ion, beta- dihydromuconic acid ion, phthalic acid ion or isophthalic acid ion; Z is larger th...
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JPH01201030A |
PURPOSE: To obtain a compsn. based on an oxide having a spinel structure and useful as a dehydrogenation catalyst by decomposing a mixture of org. salts of iron and other metals and reducing the resultant oxide. CONSTITUTION: A mixture o...
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JPH0137386B2 |
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JPH0133457B2 |
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JPH0133096B2 |
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JPH01168639A |
PURPOSE: To efficiently obtain the title compounds useful as a raw material for various high polymer compounds and organic chemicals, by reacting an unsaturated carboxylic acid as a main raw material with an alcohol or water and carbon m...
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JPH0128011B2 |
Ionic compounds of the formula wherein X is -CONR1R2, -CH2NHxAcyl or -CH2OH; Y is -NR3R4, -NHxAcyl or OR5; R1, R2, R3 and R4 can be identical or different, and each is hydrogen, C1-6- alkyl or C2-8-alkyl substituted by 1-5 OH groups and/...
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JPH0127047B2 |
Monomethyl-substituted methylene compounds are obtained by reacting methylene compounds of the formula in which R1 and R2 independently of one another represent -CN, -CO-R3, -SO2-R3 or -NO2 and R1 can additionally denote -aryl(R1)n, wher...
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JPH0127002B2 |
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JPS6463531A |
PURPOSE: To separate a low molecular weight compound such as an alcohol, carboxylic acid, amine, etc., by passing a liquid containing the low molecular weight compound through a column packed with a crosslinked glucomannan spherical part...
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JPS6456614A |
PURPOSE: To obtain a Maillard reaction inhibitor containing a specific compound, such as thiosemicarbazide or 2-aminonicotinic acid. CONSTITUTION: A Maillard reaction inhibitor containing a compound selected from compounds expressed by f...
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JPS6445358A |
PURPOSE: To provide the compd. which is useful as an effective bleaching agent in low-temp. washing and has high stability by bringing the specific fatty oil Helianthus annuus into reaction with hydrogen peroxide after fat splitting, dis...
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JPS644504B2 |
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JPS6416743A |
PURPOSE: To easily separate dicarboxylic acid on a relatively large scale with increasing treatment capacity at a high separation efficiency by controlling pH of an aq. soln. of dicarboxylic acid mixture in such a way that one component ...
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JPS6363487B2 |
PURPOSE:To prepare fine powder of rare earth element oxide having large specific surface area, by reacting an aqueous solution of rare earth element salt with oxalic acid in a solid state to give an oxalate, decomposing it thermally in t...
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JPS6357414B2 |
PURPOSE:To obtain the titled compound usable for a water-resisting agent, etc., by reacting a higher fatty acid with a metallic hydroxide or chloride in the presence of small amount of a suitably selected surfactant in water, mechanicall...
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JPS63264546A |
PURPOSE: To obtain a carboxylic acid at a low cost using an industrial waste acid composed mainly of ammonium bisulfate, by mixing the waste acid with an aqueous solution of an ammonium carboxylate to produce a carboxylic acid and concen...
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JPS63258830A |
The invention provides a dimerized fatty acid with a content of dicarboxylic acid of at least 97.5 wt. %, preferably at least 98.5 wt. %. Also provided is a process for the preparation of a pure dimerized fatty acid in which a fatty acid...
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JPS63258441A |
PURPOSE: To simultaneously produce a carboxylic acid and ammonia at a low cost without adding organic solvent and generating waste acid, by decomposing an ammonium carboxylate using ammonium bisulfate as a deammoniation agent. CONSTITUTI...
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JPS63222163A |
PURPOSE: To obtain the titled substance in high efficiency, by reacting a mixture of an alkene polymer, maleic anhydride, a naphthalene derivative and a small amount of bromine compound and removing unreacted maleic anhydride, the naphth...
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JPS6345737B2 |
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JPS6345657B2 |
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JPS63501948A |
PCT No. PCT/FR86/00338 Sec. 371 Date Jul. 2, 1987 Sec. 102(e) Date Jul. 2, 1987 PCT Filed Sep. 30, 1986 PCT Pub. No. WO87/02033 PCT Pub. Date Apr. 9, 1987.The disclosed particulate composition of simple or mixed oxalate of ferromagnetic ...
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JPS6332776B2 |
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JPS6332775B2 |
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JPS6332778B2 |
The invention concerns new 3-methyl-5-keto- alpha , omega -alkene-dioic acids of the general formula wherein the double bond is in one of the positions indicated by the broken lines, R1 and R2 independently of one another are a hydrogen ...
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JPS6330296B2 |
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JPS6326736B2 |
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JPS6320414B2 |
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