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Matches 401 - 450 out of 2,566

Document Document Title
WO/2000/015598A1
The invention concerns an improved method for treating a reaction medium derived from the direct oxidation of hydrocarbon into carboxylic acid, using molecular oxygen or a gas containing same, in liquid phase, in a solvent and in the pre...  
WO/2000/011008A1
Chiral phosphine ligands derived from chiral natural products including D-mannitol and tartaric acid. The ligands contain one or more 5-membered phospholane rings with multiple chiral centers, and provide high stereoselectivity in asymme...  
WO/2000/001655A1
This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by separating the catalyst from the reaction mixture, outside the reaction zone. Substantially all ...  
WO/2000/001647A2
Organic compounds, e.g., fluoro-organic compounds such as fluorocarboxylic acids or carboxylic acid chlorides can contain small quantities of carboxylic acid fluorides, HF or hydrolysable fluoride. Corrosive fluorides or hydrofluoric aci...  
WO/2000/001656A1
This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by extracting the catalyst from the reaction mixture, outside the reaction zone. Substantially all ...  
WO/2000/001654A1
An aliphatic diacid and nitrous oxide are produced by the following methods: the aliphatic dibasic acid is produced by oxidation of an hydrolylated aromatic compound with nitrous oxide to form the aliphatic dibasic acid and the nitrous o...  
WO1999044707A3
Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion ...  
WO/1999/062917A1
The invention relates to phospholanes and diphospholanes of general formula (I), whereby R represents H, C¿1?-C¿6?-alkyl, aryl, alkyl aryl, SiR?2¿¿3?, R?2¿ represents alkyl or aryl, A represents H, C¿1?-C¿6?-alkyl, aryl, Cl, or (a...  
WO/1999/059953A1
This invention relates to methods of controlling the oxidation of hydrocarbons to respective intermediate oxidation products, e.g., dibasic acids, by adjusting the bulk temperature of the liquid mixture under oxidation by a cooling eleme...  
WO1999037599A3
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxid...  
WO/1999/044707A2
Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion ...  
WO/1999/044980A1
The invention concerns the treatment of reaction mixtures derived from an oxidation reaction of cyclohexane into adipic acid and more particularly the separation of the different constituents of said mixtures and the purification of the ...  
WO/1999/042282A1
A modified PbZrTiO¿3? perovskite crystal material thin film, wherein the PbZrTiO¿3? perovskite crystal material includes crystal lattice A-sites and B-sites at least one of which is modified by the presence of a substituent selected fr...  
WO/1999/042430A1
This invention relates to methods for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxidation zone, after t...  
WO/1999/040058A1
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasis acids, in the presence of a cobalt catalyst and a monobasic acid, such as acetic acid, by treating the catalyst from the react...  
WO/1999/037599A2
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxid...  
WO/1999/028286A1
Process to separate rhodium from an organic starting mixture comprising of an organic solvent, C¿6?-dicarboxylic acids and iodide compounds, wherein rhodium is separated by extracting the organic starting mixture with an aqueous solvent...  
WO/1999/025461A1
A low-cost and practical global warming prevention method and device that can decompose N¿2?O contained in gases to be treated at a relatively low temperature. Specifically, a method and device for global warming prevention, wherein, a ...  
WO1999010527A3
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...  
WO/1999/015489A1
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 precipitaded by introduction of additional cycloh...  
WO/1999/014178A1
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...  
WO/1999/014179A1
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...  
WO/1999/010527A2
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...  
WO/1999/008988A1
A process for preparing malonic acid from the hydrolysis of cyanoacetic acid in the presence of aqueous hydrochloric acid, the process conditions being such that they allow high yields in malonic acid product. The product of said acid hy...  
WO/1999/005086A1
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...  
WO/1999/000352A1
Dilute solutions of fermentation sales may be concentrated by extracting water using low-miscibility, low-molecular-weight secondary and tertiary amines, e.g. triethylamine (TEA), diisopropyl amine (DIA), N,N-diethylmethylamine (DEMA), a...  
WO/1998/054119A1
Water-soluble dodecandioates wherein the cationic moiety is selected from the group comprising the cations of basic aminoacids (e.g. lysine) and choline and orally or parenterally administrable compositions containing same, are disclosed.  
WO/1998/043946A1
Processes for preparing compounds of the formula (I) are described: P?1�OOC-CH(OH)-CHR?1�-CONH-Z wherein P?1� is hydrogen or a protecting group, Z is a group -CHR?2�COOP?2� or -CHR?2�CONR?3�R?4� wherein P?2� is hydrogen...  
WO1998026449A3
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...  
WO/1998/039282A1
The invention provides a process for directly manufacturing a diamine/dicarboxylic acid salt with a low water content. The process includes reacting a diamine with a dicarboxylic acid to form a diamine/dicarboxylic acid salt. The reactio...  
WO/1998/035929A1
The invention relates to a method of producing dicarboxlic acid crystallizates from a solution containing at least one organic dicarboxylic acid, wherein at least one anionic polyelectrolyte with a molar mass of at least 2.000 is added t...  
WO/1998/035925A1
A process for producing a cleaved product from castor oil, or derrivatives thereof, by high temperature caustic oxidation reaction accomplished by combining at least one chemically inert diluent, a catalyst, and an alkali in aqueous solu...  
WO/1998/030530A1
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...  
WO/1998/027029A1
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 ...  
WO/1998/026449A2
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...  
WO/1998/025882A1
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...  
WO/1998/020966A1
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 decr...  
WO/1998/019789A1
Methods and devices 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 a...  
WO/1998/019987A1
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 react...  
WO/1997/049485A1
Methods and devices for controlling the reaction of a hydrocarbon to an acid by making phase-related adjustments are disclosed. In order to improve reaction rate and reactivity of the oxidation, a single phase at the operating temperatur...  
WO/1997/047612A1
The invention relates to the field of chemistry and more particularly to that of therapeutic chemistry. The invention more precisely features novel 5-phenoxyalkyl 2,4-thiazolidinediketones of general formula (I): in which A represents on...  
WO/1997/047580A1
The invention discloses pentenoic acid hydroxycarbonylation into adipic acid. More particularly it concerns one pentenoic acid hydroxycarbonylation method involving reaction water and carbon monoxide, in presence of a catalyst comprising...  
WO/1997/047572A1
Optically active carboxylic acids, salts or esters, such as the profen-type compounds, are racemized in the presence by nitrogenous bases such as methylbenzyl-amine by heating an aqueous solution of such optically active compounds at a t...  
WO/1997/046509A1
The invention discloses a method for purifying adipic acid in water. More precisely it discloses an improvement in adipic acid crystallization or recrystallization in water, characterised in that the said crystallization or recrystalliza...  
WO/1997/046510A1
The invention discloses a method for purifying adipic acid by crystallization or recrystallization in at least one carbolyxic acid. More precisely, it discloses an improvement in adipic acid crystallization or recrystallization, characte...  
WO/1997/036673A1
A method for separating a catalyst from a solution containing same by membrane electrodialysis is disclosed. Specifically, the separation of a catalyst used in a homogeneous-phase molecular oxidation reaction is disclosed. According to t...  
WO/1997/028202A1
The disclosure relates to a method of producing press-moulding materials, in particular wood chip boards, by hot pressing of materials containing lignocellulose and mixed and/or impregnated with polyisocyanates as binders, using latent, ...  
WO/1997/027763A1
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 which have a salty taste comparable to tabl...  
WO/1997/025452A1
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...  
WO/1997/013723A1
A solution process for the purification of calcium hydroxide, particularly from hydrated carbide lime, which is subsequently used as a feed stock for a high-value calcium product, preferably calcium carbonate. Precipitated calcium carbon...  

Matches 401 - 450 out of 2,566