| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
|---|
| 03/09/2004 | US6703528 Process for producing carbonyl or hydroxy compound |
| 03/09/2004 | CA2122345C A method to produce highly pure eicosapentaenoic acid or its ester |
| 03/04/2004 | WO2004018404A1 Process for manufacture of carboxylic acid salts |
| 03/04/2004 | WO2004018403A1 Method of vapor phase catalytic oxidation using multitubular reactor |
| 03/04/2004 | WO2003048098A3 Process for preparing monochloroacetic acid |
| 03/04/2004 | WO2003027050A3 Process for preparing pentacene derivatives |
| 03/04/2004 | US20040044248 Vapor phase oxidation, ammoxidation using catalyst |
| 03/04/2004 | US20040044247 Method for reactivating catalyst fo methacrylic acid preparation |
| 03/04/2004 | US20040044246 Method of removing iron contaminants from liquid streams during the manufacture and/or purification of aromatic acids |
| 03/04/2004 | US20040044245 Continuous processing; carbonylation of methanol using rhodium, iridium catalyst; process control |
| 03/04/2004 | US20040044243 Preparation of 3-acyloxy-2-methylbenzoic acids |
| 03/04/2004 | US20040044230 Forming g-butyrolactone |
| 03/04/2004 | US20040044120 Method for preventing polymerization in an acrylic acid manufacturing process |
| 03/04/2004 | DE10336386A1 Absorptive separation of acrylic acid, useful for the production water absorbents and adhesives, comprises recycling organic raffinate from the acid water extraction to the absorption unit at least one theoretical stage below its head |
| 03/04/2004 | DE10313209A1 Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, useful for the production of adhesive, comprises use of a gas phase mixture having a molar ratio of oxygen to propene of 1.5-2.5 |
| 03/03/2004 | EP1394170A1 Process for preparing cis alkenes and new catalysts therefor |
| 03/03/2004 | EP1394143A1 Process for the production of fluorocarboxylic acid anhydrides |
| 03/03/2004 | EP1394141A1 Preparation of aryl olefins |
| 03/03/2004 | EP1394109A1 Method of separating acid |
| 03/03/2004 | EP1392637A2 Modulators of peroxisome proliferator activated receptors |
| 03/03/2004 | EP1392636A1 Process for preparing carboxylic acids and derivatives thereof |
| 03/03/2004 | EP1392635A1 Crystallization method for production of purified aromatic dicarboxylic acids |
| 03/03/2004 | EP1392634A1 Two stage oxidation process for the production of aromatic dicarboxylic acids |
| 03/03/2004 | EP1392621A2 Solid phase extraction method for obtaining high-purity unsaturated compounds or derivatives of said compounds |
| 03/03/2004 | EP0970942B1 Process for the simultaneous preparation of acrylonitrile and acrylic acid |
| 03/03/2004 | CN1479733A Method for hydrogenation of maleic anhydride and related compounds in fluid bed reactor |
| 03/03/2004 | CN1479719A Process for producing 5-cyanovaleric, adipic acid or dimethyl adidpate |
| 03/03/2004 | CN1479715A Amide for inhibition of IL-8-induced chemiotaxis of neutrophil leucocytes |
| 03/03/2004 | CN1479713A Rapidly cooling for hot gas mixture containing (meth) acrylic acid |
| 03/03/2004 | CN1479706A 2-butyl-3-(4-[3-(dibutylamino) propoxy] benzoyl)-5-nitro-benzofuran hydrochloride and preparation thereof |
| 03/03/2004 | CN1479696A Mtehod for co-precipitating actinides and method for preparing mixed actinide oxides |
| 03/03/2004 | CN1140532C Process for preparing bisphosphines |
| 03/03/2004 | CN1140508C Substed 4-biphenyl-4-hydroxybutyric acid derivs, and matrix metalloprotease inhibitors |
| 03/03/2004 | CN1140346C Process for preparing carboxylic acid salts and catalyst useful in such process |
| 03/03/2004 | CN1140338C Oxide catalyst for oxidiznig or ammonia oxidizing reaction |
| 03/03/2004 | CN1140309C Method for separating vaporous phthalic acid anhydride from gas tream |
| 03/02/2004 | US6700029 Vapor phase using composite oxide catalyst |
| 03/02/2004 | US6700016 Crystallization obtains mother liquor; washing |
| 03/02/2004 | US6700015 Vapor phase oxidation of an alkane and/or alkene to unsaturated carboxylic acid; or ammoxidation to unsaturated nitrile |
| 03/02/2004 | US6700008 Method and catalyst composition for producing aromatic carbonates |
| 02/26/2004 | WO2003066815A3 Method for producing 2-hydroxyisobutyric acid and methacrylic acid from acetone cyanohydrin |
| 02/26/2004 | WO2002083299B1 Palladium catalyst and processes for using the same |
| 02/26/2004 | US20040038346 Vectors, host cells, and recombinant methods for making and using the novel molecules |
| 02/26/2004 | US20040035715 Preparation of butanetetracarboxylic acid derivatives by coupled electrosynthesis |
| 02/26/2004 | US20040035045 Effective in fuel in improving operation of diesel engine particulate traps |
| 02/26/2004 | DE10244633B3 Preparation of alkynoic acid, e.g. propiolic or acetylenedicarboxylic acid, used in synthesis, e.g. cycloaddition or nucleophilic addition, by alkaline oxidation in presence of nitroxyl involves adding alkynol and hypohalite during reaction |
| 02/26/2004 | DE10237579A1 Production of phthalic acid dichloride involves reacting phthalic anhydride with phosgene in inert solvent in presence of N,N-dialkylformamide, the phosgene and amide being added continuously or semi-continuously |
| 02/26/2004 | DE10236919A1 Verfahren zur Herstellung von 3,3-Dimethyl-2-oxobuttersäure A process for the preparation of 3,3-dimethyl-2-oxobutanoic acid |
| 02/25/2004 | EP1390340A1 Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds |
| 02/25/2004 | EP1390339A2 Process for the preparation of 7-substituted 3-alkyl-3h-isobenzofuran-1-one derivatives |
| 02/25/2004 | EP1390338A1 Method for oxidising hydrocarbons |
| 02/25/2004 | EP1294672B1 Method for producing propylene hydroformylation products and acrylic acid and/or acrolein |
| 02/25/2004 | EP1242355B1 Method for producing diamine and carboxylic diacid salt |
| 02/25/2004 | EP1230206B1 Method for production of formic acid |
| 02/25/2004 | EP1218329B1 Method for improving the stability and/or avoiding deactivation of a catalyst when making an acetic acid and/or methyl acetate |
| 02/25/2004 | EP1087925B1 Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid |
| 02/25/2004 | EP1087924B1 Method for preparing p-hydroxymandelic compounds optionally substituted |
| 02/25/2004 | CN2604435Y Flash evaporator for technology of methyl alcohol low pressure carbonyl synthesizing acetic acid |
| 02/25/2004 | CN2604434Y Bubble tower converter for technology of methyl alcohol low pressure liquid phase carbonyl synthesizing acetic acid |
| 02/25/2004 | CN1478073A Process for producing fluorosulfonyl fluoride compound |
| 02/25/2004 | CN1478071A Method for carbonylation of pentenoic acid and derivatives thereof |
| 02/25/2004 | CN1477107A Electrodialysis method for separating sugar and acid in biomass hydrolysate |
| 02/25/2004 | CN1139426C Oxidative reaction using mixed conductive oxygen selective membrane |
| 02/24/2004 | US6696604 Oxidizing pseudocumene in presence of a solvent and a catalyst comprising multivalent metals to produce trimellitic acid; crystallizing and filtering; dehydrating to produce trimeillitic anhydride; distillation |
| 02/24/2004 | US6696603 Method for cleaning off-gas flows |
| 02/24/2004 | US6696590 Reacting alcohol with phosgene, diphosgene and/or triphosgene under pressure to form chloroformate |
| 02/24/2004 | US6696582 Oxidation with oxygen or oxygen containing gases at 0-100 degrees celsius in at least 2 stages |
| 02/24/2004 | US6695952 Method for the separation of and purification of an aqueous mixture consisting of the main components acetic acid and formic acid |
| 02/24/2004 | US6695928 Removing of adhered solid substance is performed without overhauling of the device |
| 02/19/2004 | WO2004015046A1 Method for the production of conjugated linoleic acids |
| 02/19/2004 | WO2004015003A2 Preparation method of naphthalene dicarboxylic acid |
| 02/19/2004 | WO2004014830A1 Method for producing carbonyl compound |
| 02/19/2004 | WO2004014819A2 Multi-step method for the production of carboxylic acids and/or anhydrides with intermediate separation |
| 02/19/2004 | WO2004014552A1 A phospha-adamantane (s) catalytic system |
| 02/19/2004 | WO2003004126A3 Azeotropic distillation of cyclic esters of hydroxy organic acids |
| 02/19/2004 | WO2002030356A3 Synthesis of epothilones and relates analogs |
| 02/19/2004 | US20040034249 For gas phase oxidation; improved selectivity and life |
| 02/19/2004 | US20040034243 Oxidation of monomethylolalkanal or polymethylolalkanal to produce monomethylolalkanoic acid or polymethylolalkanoic acid using hydrogen peroxide |
| 02/19/2004 | US20040033995 Nitrogen compounds, stereoisomers and/or racemic mixtures used as enzyme inhibitors for prophylaxis of inflammatory diseases |
| 02/19/2004 | US20040031674 Workup of (meth)acrylic acid and (meth)acrylic esters |
| 02/19/2004 | DE10237380A1 Production of formic acid-formate e.g. as preservative or animal feed additive, involves partial hydrolysis of methyl formate with water, distillation to give formic acid and water, and combination with the corresponding formate |
| 02/19/2004 | DE10237379A1 Production of formic acid-formate e.g. preservative and animal feed additive, comprises partial hydrolysis of methyl formate, separation of formic acid, base hydrolysis of remaining ester and combination with formic acid |
| 02/19/2004 | DE10236698A1 Production of carboxylic acid or anhydride, e.g. phthalic anhydride, comprises multi-stage oxidation of aromatics involves fractionating the stage one product and oxidizing the fraction with the higher intermediate oxidation stage |
| 02/19/2004 | DE10236086A1 Production of conjugated linoleic acid, e.g. as food additive, comprises isomerization of lower alkyl linoleate in presence of alkali alcoholate, hydrolysis with alkali and neutralization with phosphoric acid |
| 02/18/2004 | EP1389609A1 Method of purifying aromatic polycarboxylic acid |
| 02/18/2004 | EP1235782B1 Method for oxidation of xylene derivatives |
| 02/18/2004 | EP1235780B1 Method for producing o-chloromethyl benzoic acid chlorides |
| 02/18/2004 | CN1476425A Production process of butane tetra carboxylic acid derivatives by means of coupled electrosynthesis |
| 02/18/2004 | CN1138748C Carbonylation method |
| 02/18/2004 | CN1138747C Carbonylation method |
| 02/18/2004 | CN1138746C Process for preparing acetate from gas phase oxidation saturated C4-hydrocarbons and mixture of same and unsaturated C4-hydrocarbons |
| 02/18/2004 | CN1138745C Improved process for producing highly pure aromatic carboxylic acids |
| 02/18/2004 | CN1138744C Method for producing optically active chrysanthemic acid |
| 02/18/2004 | CN1138596C Catalyst and process for oxidation of ethane and/or ethylene |
| 02/17/2004 | US6693216 A calcium double salt of organic (preservative) acids of formula ca(r1)(r2) where r1 and r2 are different and are each ooc-r3, r3=saturated or monounsaturated or polyunsaturated c1-c5-alkyl, c1-c5-hydroxyalkyl or phenyl |
| 02/17/2004 | US6693215 Process for the preparation of salts of L-carnitine and alkanoyl L-carnitine with mucic acid |
| 02/17/2004 | US6693214 Intermediate for sweetener with high sweetness and process for producing the same |
| 02/17/2004 | US6693210 Triphenylphosphine derivative, production process therefor, palladium complex thereof, and process for producing biaryl derivative |
| 02/17/2004 | US6693099 Substituted piperazine compounds optionally containing a quinolyl moiety for treating multidrug resistance |
| 02/17/2004 | US6693059 Vapor phase catalytic oxidation of alkanes to unsaturated aldehydes or acids |