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Matches 501 - 550 out of 2,608

Document Document Title
WO/1994/013616A1
Process for the treatment of a material comprising a polymer, especially a polyamide. The process consists in subjecting the polyamide to hydrolysis in the presence of a hydrolyzing nitrous grouping and transforming the hydrolyzed compou...  
WO/1994/010122A1
A process for the preparation of carboxylic acids and esters thereof, comprises the operation of mixing an unsaturated fatty acid or corresponding ester with an oxidative substance, in the presence of a catalyst belonging to the group co...  
WO/1994/008939A1
A method for hydroxycarbonylating pentenoic acids, wherein one or more pentenoic acids are hydroxycarbonylated into adipic acid with carbon monoxide and water in the presence of an iridium and/or rhodium based catalyst and at least one i...  
WO/1994/007833A1
The present invention relates to a process for the preparation of C5-C8 aliphatic dibasic acids through oxidation of corresponding saturated cycloaliphatic hydrocarbons by: (1) reacting, at a cycloaliphatic hydrocarbon conversion level o...  
WO/1994/006745A1
A method for making a valproic acid derivative comprising a functionalized spacer arm attached to a delta carbon atom of a valproic acid molecule is disclosed. The method proceeds by attaching a spacer arm joined to an inorganic moiety t...  
WO/1994/004269A1
An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phosphorus, zinc, lithium and molybdenum mixed oxides which comprises carrying out the crystallization step under static cond...  
WO/1994/002245A1
New titanium zeolite Beta catalysts which have been found to be useful as catalysts for the oxidation of organic compounds using organic hydroperoxides as oxidation catalysts. They are particularly useful as ring opening oxidation cataly...  
WO/1994/002128A1
Compounds of alpha,w dicarboxylic acids of formula (I) in which X and Y, which may be the same or different, are hydrogen, halogen, C1-C6-alkyl, C1-C6-alkoxy, hydroxy, cyano, carboxyl, C1-C6-alkoxycarbonyl or carbamoyl, R1 and R2, which ...  
WO/1994/000385A1
High temperature superconductors (e.g. Y-Ba-Cu-O) can be formed at commercial quantities with high phase purities by conducting the coprecipitation process at a constant pH. By selecting a precipitate (e.g. oxalates) which confers plasti...  
WO/1993/025514A1
Disclosed is a method for the simultaneous preparation of dicarboxylic acids and diamines from (a) polymers based on polyamides made by reacting dicarboxylic acids or derivatives thereof with diamines or (b) compounds containing essentia...  
WO/1993/025299A1
The invention concerns the electrochemical preparation of dicarboxylic acids by subjecting an aqueous solution containing essentially the alkali-metal salt of a dicarboxylic acid of the general formula (I): HOOC-(CH¿2?)¿n?-COOH, in whi...  
WO/1993/025513A1
Disclosed is a method for the simultaneous preparation of dicarboxylic acids and diamines from (a) polymers based on polyamides made by reacting dicarboxylic acids or derivatives thereof with diamines or (b) compounds containing essentia...  
WO/1993/012064A1
The method is carried out in a two-phase aqueous-organic system in which the organic phase contains the unsaturated fatty acid and/or the esters thereof and the aqueous phase contains hydrogen peroxide. The oxidative cleavage is carried ...  
WO/1993/012063A1
A process for the preparation of adipic acid from pentenoic compounds by hydrocarboxylation using an iridium catalyst, an iodide promoter, water, carbon monoxide and a carboxylic acid solvent.  
WO/1993/008122A1
Contrast agent for X-ray imaging, consisting of a halogenated, especially iodinated or brominated, derivative of boron, having characteristics necessary for its use in X-ray imaging. The contrast agent may be used for imaging a corporeal...  
WO/1993/005007A1
Zeolites, particularly X type zeolites, essentially irrespective of the cation they contain, are effective heterogeneous catalysts for the oxidative conversion of the products of reaction of organic molecules containing a -HC=CH- structu...  
WO/1992/017405A1
Hydrophobised double-layer hydroxide compounds may be produced if double-layer hydroxide compounds of general formula (I): [M?(II)��1-x?M?(III)��x?(OH)�2?] A�x? * n H�2?O, in which M?(II)� is a divalent metal cation, M?(I...  
WO/1992/015545A1
The invention concerns basic calcium aluminium hydroxide dicarboxylates of the following formula: Ca�x?Al�2?(OH)�2(x+3-y)?A�y? . m H�2?O, wherein x is a number between 2 and 12; (2x+5)/2 > y > 0; m is a number between 0 and 12;...  
WO/1992/014543A1
In accordance with the present invention there is provided a method of making a cascade polymer including the steps of alkylating the branches of a multi-branch core alkyne building block including multiple ether side chains and simultan...  
WO/1992/012955A1
Branched fatty substances may be produced by reacting maleic acid anhydride containing fatty acids having 16 to 24 carbon atoms and 1, 2, 3, 4 or 5 double bonds or its esters with alcohols 1 to 4 carbon atoms in the presence of at least ...  
WO/1992/009564A1
Compounds of formula (I) are described wherein R represents a -CONHOH, carboxyl (-CO2H) or esterified carboxyl group; R1 represents an optionally substituted alkyl, alkenyl, aryl, aralkyl, heteroaralkyl or heteroarylthioalkyl group; R2 r...  
WO/1992/009565A1
Compounds of formula (I) are described wherein R represents a -CONHOH, carboxyl (-CO2H) or esterified carboxyl group; R1 represents an optionally substituted alkyl, alkenyl, aryl, aralkyl, heteroaralkyl or heteroarylthioalkyl group; R2 r...  
WO/1992/001644A1
The process disclosed enables aluminium oxide fibres containing up to about 40 wt % of Sio2 to be produced by reacting aluminium hydroxide or aluminium oxide hydrate with oxalic acid in an aqueous medium, optionally in the presence of an...  
WO/1991/014672A1
A chiral catalyst is disclosed together with methods of using it for enantioselective syntheses. The chiral catalyst includes a nucleus with two metal atoms that has four bridging ligands oriented radially to the axis of the nucleus. Eac...  
WO/1991/011421A1
The invention describes basic calcium aluminium hydroxyde dicarboxylates of the general formula: Ca�x?Al�2?(OH)�2(x+2)?A. m H�2?O in which x = 2 - 8; m = 0 -12; and A is an aliphatic, aromatic or heteroaromatic dicarboxylic acid ...  
WO1991009025A3  
WO1991001963A3  
WO/1991/009025A2
Partially fluorinated compounds of specified formulas that are useful as chemical intermediates and monomers are disclosed. Partially fluorinated polymers prepared from one of these compounds are also disclosed. Fluoro-2,2-dimethyldioxol...  
WO/1991/004959A1
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...  
WO/1991/001963A2
Sebacic acid and the pharmacologically acceptable derivatives thereof, such as the novel compounds sodium sebacate and potassium sebacate, the sebacic acid triglyceride and the sodium and potassium salts of the triglyceride are useful fo...  
WO/1990/004581A1
To prepare (+)-isocitric acid and its derivatives, maleic acid and/or fumaric acid and/or their derivatives are added to haloacetic acid and its derivatives at high temperature under the action of photomechanical energy and the halogen g...  
WO/1990/003359A1
Novel copolymers of unsaturated acidic reactants and high molecular weight olefins wherein at least 20 percent of the total high molecular weight olefin comprises the alkylvinylidene isomer are useful as dispersants in lubricating oils a...  
WO/1988/004650A1
Succinic acid is recovered from its mixture with other carboxilic acids by a process which comprises the steps of: (A) heating the mixture of carboxilic acids under conditions of temperature and pressure and for a time sufficient to dehy...  
WO1987005898A3  
WO/1988/002746A1
Medicaments containing known alpha-halogenated dicarboxylic acids of formula (I), whereby in general formula (I), Hal is fluorine, chlorine and bromine; R is hydrogen and Hal, and m is a number between 4 and 16; or new compounds of gener...  
WO/1987/005898A2
Method for retarding plant growth by applying to the plant an effective amount of a malonic acid derivative compound. This invention also relates to novel malonic acid derivative compounds and processes for the preparation thereof.  
WO/1987/002033A1
The disclosed particulate composition of simple or mixed oxalate of ferromagnetic metals is characterized in that it is provided in the form of needle-shaped particles having a length comprised between 0.05 and 0.5 micrometer, with a pro...  
WO/1986/000298A1
alpha,omega-dicarboxylic acids having the general formula (I') in which: R1 and R2, which may be different or the same, represent a lower alkyl group which can be substituted by hydroxy, lower alkoxy, halogen or phenyl, the phenyl being ...  
WO/1983/001951A1
Prostacyclin derivatives having the general formula I$(10,)$wherein R1 is either the OR3 rest, wherein R3 may be hydrogen or an alkyl group with 1 to 10 atoms of carbon and optionally substituted by halogen, aryl, C1-C4-alkoxy or C1-C4-d...  
WO/1979/000538A1
A process for obtaining carboxylic acids by reacting (Alpha)-olefines or cycloalkenes with liquid nitrogen dioxide N2O4 in a liquid-liquid phase in a continuous or batch system, and oxidizing or oxidizing and ring-opening these compounds...  
WO/1979/000278A1
A process of producing, with a high yield, aliphatic acids by reacting aliphatic acids or aliphatic ketons with liquid nitrogen dioxide N2O4 in a liquid-liquid phase through a continuous or batch system and subjecting the results to acid...  
JP2020526490A
長鎖アミノ酸および長鎖二塩基酸を分離する 方法であって、(1)蒸留、または抽出溶媒 による抽出によって、アルキルアミンを回収 するステップと;(2)酸および抽出溶...  
JP2020526544A
長鎖アミノ酸および長鎖二塩基酸を分離する 方法であって、(1)混合アミド誘導体をア ンモニアまたは水酸化アンモニウムの水溶液 と溶媒または触媒の存在下または非存在...  
JP2020526517A
長鎖アミノ酸および長鎖二塩基酸を製造する 方法であって、(1)長鎖ケト脂肪酸をヒド ロキシルアミンと反応させるか、またはケト 脂肪酸にアンモオキシム化反応を行って...  
JP2020526491A
長鎖アミノ酸および長鎖二塩基酸を分離する 方法であって、(1)水および抽出溶媒を混 合アミド誘導体の酸加水分解の水性懸濁液に 添加して、水溶液および抽出剤相を得る...  
JP2020526489A
長鎖アミノ酸および長鎖二塩基酸を分離する 方法であって、(1)混合アミド誘導体の水 酸化アルカリ加水分解の水溶液から蒸留、ま たは抽出溶媒による抽出によって、アル...  
JP6739434B2  
JP2020114850A
To provide a method for producing highly pure succinic acid having needle-like crystals. A method for producing succinic acid comprising the following steps. A step of adding hydrogen chloride to an aqueous solution of magnesium succinat...  
JP2020108890A
[Subject] A method for preparing cocrystal which provides solution to a problem of a method for preparing cocrystal of conventional technology is provided. [Means for Solution] The present invention relates to a method for manufacturing ...  
JP6716615B2  

Matches 501 - 550 out of 2,608