| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 02/27/2001 | US6194607 Oxidizing, with feed gas comprising oxygen and carbon dioxide, alkyl aromatic compound or partially oxidized intermediate using catalyst comprising cobalt, manganese, and bromine, alkali metal or alkaline earth metal dissolved in solvent |
| 02/27/2001 | US6194601 5,6-dihydronaphthalenyl derivatives having retinoid-like activity |
| 02/27/2001 | US6194588 Method for production of maleic anhydride |
| 02/27/2001 | US6194587 Reacting mixture of molecular oxygen containing gas n-butane in reactor at conditions effective for formation of maleic anhydride; scrubbing reaction gas mixture to recover maleic anhydride; separating liquid, adding n-butane and reacting |
| 02/27/2001 | CA2082286C Novel process for the preparation of the lactone of 1r,cis 2,2-dimethyl 3-formyl cyclopropane-1-carboxylic acid, and its precursors |
| 02/27/2001 | CA2082285C Novel process for the preparation of the lactone of 1r,cis 2,2-dimethyl 3-formyl cyclopropane-1-carboxylic acid, and its halogenated precursors |
| 02/23/2001 | CA2315884A1 Polyoxometallate supported catalysts |
| 02/22/2001 | WO2001012318A1 Recovery process for oxidation catalyst in the manufacture of aromatic carboxylic acids |
| 02/22/2001 | WO2000071500A8 Halogen compounds |
| 02/22/2001 | DE19938874A1 Verfahren zum Entfernen von kurzkettigen Fettsäuren aus einer wäßrigen Glycerinlösung A process for removing short-chain fatty acids from an aqueous glycerol solution |
| 02/22/2001 | DE19938841A1 Inhibitorkomposition zur Stabilisierung von radikalisch polymerisierbaren Substanzen Inhibitor composition for the stabilization of radically polymerizable substances |
| 02/22/2001 | DE19938736A1 Verfahren zur Herstellung von [Bis-(trifluormethyl)-phenyl]-essigsäuren und deren Alkylestern sowie [Bis-(trifluormethyl)-phenyl]-malonsäure-dialkylester A process for preparing [bis (trifluoromethyl) phenyl] -acetic acids and alkyl esters thereof as well as [bis (trifluoromethyl) phenyl] malonic acid dialkyl esters |
| 02/21/2001 | EP1077245A2 Inhibitor composition for stabilising radically polymerisable substances |
| 02/21/2001 | EP1077208A2 Process for the preparation of (bis-(trifluormethyl)-phenyl)-acetic acids and their alkyl esters as well as dialkyl esters of (bis-(trifluormethyl)-phenyl)-malonic acid |
| 02/21/2001 | EP1077082A1 Heteropolyacid/polyoxometallate catalysts |
| 02/21/2001 | EP1076636A1 Method for producing substituted benzenes |
| 02/21/2001 | CN2420280Y Production equipment for sodium diacetate |
| 02/21/2001 | CN1284940A Method and apparatus for recovering terephthalic acid |
| 02/21/2001 | CN1284939A Process for making certain benzoic acid compounds |
| 02/21/2001 | CN1284495A Prep. of calcium propionate and device for the same |
| 02/21/2001 | CN1284400A Heteropoly acid/multimetal oxacid salt catalyst |
| 02/21/2001 | CN1062260C Continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid or mixture thereof |
| 02/20/2001 | US6191308 Process for the manufacture of oxygenates |
| 02/20/2001 | US6191307 Heating a reaction mixture comprised of a phthalimide, a mineral acid, water, and an aprotic, dipolar, water-soluble catalytic agent in which reaction mixture is soluble; high speed reaction |
| 02/16/2001 | CA2315587A1 Process for preparing (bis-(trifluoromethyl)-phenyl)-acetic acids and alkyl esters thereof and dialkyl (bis-(trifluoromethyl)-phenyl)-malonates |
| 02/15/2001 | WO2001010885A2 Birch bark processing and the isolation of natural products from birch bark |
| 02/15/2001 | WO2001010822A1 Process for preparing acids via alpha-chloroepoxy esters |
| 02/15/2001 | WO2001010810A1 A process for the preparation of divinyl stilbene compounds |
| 02/15/2001 | WO2001010808A1 Process for purifying polycarboxylic acids |
| 02/15/2001 | WO2001010807A1 Method of producing carboxylic acids by carbonylation of olefins |
| 02/15/2001 | CA2381967A1 Birch bark processing and the isolation of natural products from birch bark |
| 02/15/2001 | CA2381023A1 Process for purifying polycarboxylic acids |
| 02/15/2001 | CA2381010A1 Process for preparing acids via alpha-chloroepoxy esters |
| 02/14/2001 | EP1075458A1 Process for purifying isophthalic acid by crystallization |
| 02/14/2001 | EP0664782B2 Enantiomeric resolution |
| 02/14/2001 | CN1283606A Method and appts for absorbing propenoic acid compound |
| 02/14/2001 | CN1283604A Process for mfg. acrolein and propenoic acid |
| 02/14/2001 | CN1283521A Catalyst compsns, its prepn, process and process of purifying terephthalic acid |
| 02/14/2001 | CN1061971C Process for prepn of maleic anhydride |
| 02/13/2001 | US6187964 Forming an aryl formate and aromatic carboxylic acid by oxidation an aromatic aldehyde with oxygen, separation a carboxylic acid, aryl formate, unreacted aldehyde mixture and decomposition of formate to phenol |
| 02/13/2001 | US6187952 Reacting 4-fluorobenzaldehyde with a chlorinating agent in the presence of a free-radical initiator, then reacting the reaction product 4-fluorobenzoyl chloride in the presence of a chlorination catalyst |
| 02/13/2001 | US6187903 Method of preparing dimeric fatty acids and/or esters thereof containing low residual interesters and the resulting dimeric fatty acids and/or dimeric fatty esters |
| 02/08/2001 | WO2001009152A1 Process for purifying 2-keto-l-gulonic acid |
| 02/08/2001 | WO2001009102A2 Process for preparing 1,5-diaryl-3-substituted pyrazoles |
| 02/08/2001 | WO2001009089A1 Process for the preparation of isotretinoin |
| 02/08/2001 | WO2001009083A1 Production of n-substituted 2,7-dialkyl-4-hydroxy-5-amino-8-aryl-octanoylamides |
| 02/08/2001 | WO2001009079A1 2-alkyl-5-halogen-pent-4-ene carboxylic acids and their production |
| 02/08/2001 | WO2001009075A1 Photocurable composition containing iodonium salt compound |
| 02/08/2001 | WO2001009074A1 Process for the recovery of organic acids |
| 02/08/2001 | WO2001009066A1 Method of preparing dimeric fatty acids and/or esters thereof |
| 02/08/2001 | WO2001008798A1 Catalytic composition, method for manufacturing thereof and method for the purification of terephthalic acid |
| 02/08/2001 | DE19936979A1 Verfahren zur Herstellung von Carbonsäuren durch Carbonylierung von Olefinen A process for preparing carboxylic acids by carbonylation of olefins |
| 02/08/2001 | CA2388299A1 Process for purifying 2-keto-l-gulonic acid |
| 02/08/2001 | CA2380026A1 Process for the preparation of isotretinoin |
| 02/07/2001 | EP1074540A1 Process for the recovery of saturated dicarboxylic acids from the ozonolysis of unsaturated fatty acids |
| 02/07/2001 | EP1074539A2 Process for producing optically active 3,3,3,-trifluoro-2-hydroxy-2-methylpropionic acid, and salt thereof |
| 02/07/2001 | EP1074538A2 Process for producing acrolein and acrylic acid |
| 02/07/2001 | EP1074536A1 Oxidation method |
| 02/07/2001 | EP1073621A1 Preparation of organic acids |
| 02/07/2001 | EP1073619A1 Process for the manufacture of acetic anhydride |
| 02/07/2001 | EP1073518A1 Multi-metal oxide compounds |
| 02/07/2001 | EP1073517A1 Production of unsaturated acids or esters thereof and catalysts therefor |
| 02/07/2001 | EP0874797B1 Processes employing indicator ligands |
| 02/07/2001 | CN1282727A Improved method of preparing acrylic acid from propylene and purification of produced acrylic acid |
| 02/07/2001 | CN1282630A Compound oxide catalyst and method for preparing (methyl) propenal and (methgl) acrylic acid |
| 02/06/2001 | US6184421 Selective oxidation, to a carboxy group, of the group in the 2 position with respect to the hydroxyl groups of a mixture of phenols having formyl and/or hydroxymethyl groups in positions 2 or 4; preparing vanillin and ethyl vanillin |
| 02/06/2001 | US6184415 Asymmetric hydrogenation of a 2-halo(electronegative)alkenoic acid/salt (2-haloacrylic acid or salt), using an enantiometrical riched catalyst of 2,2'-bis(diarylphosphino-phino-1,1'-binaphthyl complex of ruthenium; halide promoters |
| 02/06/2001 | US6184413 Supported phase catalyst |
| 02/06/2001 | US6184173 Multimetal oxides containing molybdenum, vanadium and one of tungsten, niobium, titanium, zirconium, hafnium, tantalum, chromium, silicon and germanium and having three dimensional atomic arrangement are used in oxidation catalysts |
| 02/06/2001 | US6183947 Dissolving an organic acid in water; adding alkali to form aqueous solution or suspension containing alkali salt of organic acid, cooling aqueous solution or suspension; adding silver nitrate form organic silver salt dispersion |
| 02/06/2001 | US6183698 Devices for controlling the reaction rate of a hydrocarbon to an intermediate oxidation product by pressure drop adjustments |
| 02/06/2001 | CA2226302C Method for separating a palladium catalyst |
| 02/06/2001 | CA2110871C Functionalization of polymers based on koch chemistry and derivatives thereof |
| 02/05/2001 | CA2314943A1 Method of producing dicarboxylic acids suitable for synthesis of polymers or polyamides |
| 02/01/2001 | WO2001007393A1 Processes for preparing oxygenates |
| 02/01/2001 | WO2001007391A1 Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid |
| 02/01/2001 | WO2001007390A1 A method for the separation and purification of an aqueous mixture consisting of acetic acid and formic acid as the main components |
| 02/01/2001 | WO2001007389A1 Process for crystallization of dicarboxylic acids |
| 02/01/2001 | WO2001007388A1 Carbonylation reactions |
| 02/01/2001 | WO2001007387A1 Oxidative carbonylation of toluene catalyzed by rhodium and iridium |
| 02/01/2001 | WO2001007137A1 Column chromatography separation method |
| 02/01/2001 | DE19935298A1 Verfahren zur Herstellung von Calciumpropionat und Vorrichtung zur Durchführung des Verfahrens Process for the preparation of calcium propionate and apparatus for carrying out the method |
| 02/01/2001 | CA2378749A1 Carbonylation reactions |
| 01/31/2001 | EP1072623A2 Polyvalent metal salts of salicyclic acid resin and process for the preparation thereof |
| 01/31/2001 | EP1072581A2 Method for producing calcium propionate and installation for carrying out this production |
| 01/31/2001 | EP1072580A1 Process for producing chloromethylphenylacetic acid |
| 01/31/2001 | EP1072579A2 Method for producing aromatic carboxylic acid compounds |
| 01/31/2001 | EP1071687A1 Stable concentrated rare earth carboxylate liquids |
| 01/31/2001 | EP1071652A1 Process for the generation of alpha,beta-unsaturated carboxylic acids and esters using niobium catalyst |
| 01/31/2001 | EP1071650A1 Improved method for making mixed high purity (meth)acrylic anhydrides |
| 01/31/2001 | EP1071647A1 Process for the production of acetic acid and/or acetic anhydride |
| 01/31/2001 | EP1071507A1 Multi-metal oxide compounds with a two-phase structure |
| 01/31/2001 | CN1282314A Method to produce aromatic carboxylic acids |
| 01/31/2001 | CN1281846A Method for preparation of cyclopropyl acrylic derivative |
| 01/31/2001 | CN1281840A Process for preparation of cyclopropyl acethlene derivative |
| 01/31/2001 | CN1061270C Method for preparation of catelytically active multi-metal compositions containing V and Mo oxide |
| 01/30/2001 | US6180827 Recovery of acrylic acid from process or waste water streams |
| 01/30/2001 | US6180825 Oxidation using catalyst prepared by admixing metal compounds, at least one of which is an oxygen containing compound, and at least one solvent to form solution, removing solvent to obtain catalyst precursor, calcining under inert atmosphere |
| 01/30/2001 | US6180823 Stereoselective process for alkyl phenylglycolic acids |
| 01/30/2001 | US6180822 Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic compounds or partially oxidized intermediates thereof with carbon dioxide containing gas |