Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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06/09/1998 | US5763662 Method for producing formic acid of its derivatives |
06/09/1998 | US5763659 Preparation of optically active 2-halopropionic acids |
06/09/1998 | US5763658 Hydrophobic smectite clay |
06/09/1998 | US5763656 Method of preparing tartaric acid |
06/09/1998 | US5763655 Preparation of pentenoic acids via hydroxycarbonylation of butadiene |
06/09/1998 | US5763654 Process for the production of acetic acid by the carbonylation of dimethyl ether |
06/09/1998 | US5763652 Process for producing a carboxylic acid |
06/09/1998 | US5763651 Process for manufacturing polyene esters and acids |
06/09/1998 | US5763649 Process for producing aromatic carboxylic acids |
06/09/1998 | US5763648 Process for producing an aromatic carboxylic acid |
06/09/1998 | US5763481 Vinylcarboxylic acid derivatives |
06/09/1998 | US5763373 Tall oil, water, surfactant, alkaline earth metal salt dispersion |
06/09/1998 | CA2128719C Production method of high purity isomers of benzenedicarboxylic acids |
06/04/1998 | WO1998023573A1 Purification of acrylic acid obtained by catalytic oxidation of propylene |
06/04/1998 | WO1998023572A1 Solvent assisted process for recovery of phthalic anhydride in the liquid phase by distillation |
06/04/1998 | WO1998023571A1 Liquid phthalic anhydride recovery process using a rectification tower with benzoic acid control |
06/04/1998 | WO1998023371A1 Shell catalyst for producing acetic acid by gas phase oxidation of unsaturated c4 hydrocarbons |
06/04/1998 | DE19649827A1 Verfahren zur Racemisierung von substituierten 4-Ketocarbonsäuren A process for the racemization of substituted 4-ketocarboxylic acids |
06/04/1998 | DE19649426A1 Schalenkatalysator zur Herstellung von Essigsäure durch Gasphasenoxidation von ungesättigten C¶4¶-Kohlenwasserstoffen A coated catalyst for preparing acetic acid by gas-phase oxidation of unsaturated hydrocarbons C¶4¶ |
06/04/1998 | CA2272461A1 Purification of acrylic acid obtained by catalytic oxidation of propylene |
06/03/1998 | EP0845452A1 HOAC process III |
06/03/1998 | EP0782399A4 Hydroxycitric acid concentrate and method of making |
06/03/1998 | CN1183811A Method for isolation and purification of lipid cell-wall components |
06/03/1998 | CN1183761A Recovery of acetic acid from dilute aqueous streams formed during carbonylation process |
06/03/1998 | CN1183760A Method for oxidising hydrocarbons, alcohols or ketones using heterogeneous catalyst |
06/03/1998 | CN1038580C Process for production of terephthalic acid |
06/02/1998 | US5760288 Process for producing aromatic carboxylic acid |
06/02/1998 | US5760287 Process for the resolution of 6-methoxy-alpha-methyl-2-naphthaleneacetic racemic acid into its enantiomers |
06/02/1998 | US5760284 Process and catalyst for carbonylating olefins |
06/02/1998 | US5760279 Process for the carbonylation of alkyl alcohols |
06/02/1998 | US5760217 Porphyrins and their synthesis from dipyrromethanes and aldehydes |
06/02/1998 | US5760088 Wood preservatives comprising microbiocides |
06/02/1998 | US5759826 Process of preparing an organic acid |
06/02/1998 | US5759358 Process for pure grade acrylic acid |
05/29/1998 | CA2191684A1 Recycle heat exchange flash treater and process |
05/28/1998 | WO1998022484A1 Heteroarylic-arylic diphosphines as chiral ligands |
05/28/1998 | WO1998022436A1 Substituted 4-biphenyl-4-hydroxybutyric acid derivatives as matrix metalloprotease inhibitors |
05/28/1998 | WO1998022421A1 Process for the simultaneous preparation of acrylonitrile and acrylic acid |
05/28/1998 | WO1998022420A1 Process for the production of acetic acid |
05/28/1998 | WO1998022419A1 Method for preparing a 4-hydroxybenzaldehyde and derivatives |
05/28/1998 | WO1998022216A1 Production of aromatic carboxylic acids and recovery of co/mn cattalyst from ash |
05/28/1998 | CA2271421A1 Process for the simultaneous preparation of acrylonitrile and acrylic acid |
05/28/1998 | CA2268770A1 Substituted 4-biphenyl-4-hydroxybutyric acid derivatives as matrix metalloprotease inhibitors |
05/27/1998 | EP0844251A1 Process for the production of ruthenium (III) acetate solution |
05/27/1998 | EP0844230A2 Optical resolution method of (plus, minus)-3,4-dihydroxybutanoic acid |
05/27/1998 | CN1183093A Process for preparation of esters of stilbenedicarboxylic acid |
05/27/1998 | CN1182733A Method for producing diethyl ester by alcohol dehydration |
05/26/1998 | US5756858 Process for the preparation of substituted phenylacetic acid derivatives and novel intermediates |
05/26/1998 | US5756853 Multistage reaction of phenol by carboxylation, hydroxymethylation, oxidation and decarboxylation |
05/26/1998 | US5756849 Reducing concentration needed |
05/26/1998 | US5756840 Process for the preparation of a particularly pure monochloroacetic |
05/26/1998 | US5756838 Method of asymmetrically synthesizing optically active compounds using supported phase chiral sulfonated BINAP catalyst |
05/26/1998 | US5756837 Method of recycling a catalyst in a reaction involving the direct oxidation of cyclohexane into adipic acid |
05/26/1998 | US5756836 Reacting methanol or methyl acetate with carbon monoxide in presence of catalyst |
05/26/1998 | US5756834 Process for preparing fluorinated aromatics |
05/26/1998 | US5756833 Catalytic purification and recovery of dicarboxylic aromatic acids |
05/26/1998 | US5756814 Vinyl compound, its synthetic intermediates and processes for producing the same |
05/26/1998 | US5756000 Water soluble, fluorine-free surfactants |
05/26/1998 | US5755975 Separation of substances from a liquid mixture by crystallization |
05/22/1998 | WO1998020966A1 Methods and devices for controlling the oxidation of a hydrocarbon to an acid by regulating hold-up time in multi-stage arrangement |
05/22/1998 | WO1998015517A3 Process for the recovery of lactic acid by contacting aqueous solutions containing the same with a basic organic extractant |
05/22/1998 | CA2291080A1 Methods and devices for controlling the oxidation of a hydrocarbon to an acid by regulating hold-up time in multi-stage arrangement |
05/20/1998 | EP0842137A1 A process for the preparation of cyclopropane carboxylic acids and intermediates therefor |
05/20/1998 | EP0714447B1 Process for preparing (l)-2-chlorpropionic acid and its salts |
05/20/1998 | EP0636600B1 Method of purifying aromatic dicarboxylic acid |
05/20/1998 | EP0629183B1 Mixed magnesium/zinc basic soaps |
05/20/1998 | CN1182074A Production process of solid sodium formate and production process of oxalic acid including the same |
05/20/1998 | CN1182068A Process for separation of mixture of enantiomers |
05/20/1998 | CN1038409C Process for production of terephthalic acid |
05/19/1998 | US5753495 Process for the preparation of (L)-2-chloropropionic acid and its salts using lipase from pseudomonas |
05/14/1998 | WO1998019988A1 Alpha-branched fluoroalkylcarbonyl fluorides and their derivatives |
05/14/1998 | WO1998019987A1 Manufacture of adipic acid |
05/14/1998 | WO1998019986A1 A method for the production of levulinic acid and its derivatives |
05/14/1998 | WO1998019984A1 Process for the preparation of an aldehyde |
05/14/1998 | WO1998019789A1 Methods and devices for controlling the oxidation rate of a hydrocarbon by adjusting the ratio of the hydrocarbon to a rate-modulator |
05/14/1998 | WO1998019511A2 Method for the preparation of citalopram |
05/14/1998 | DE19646378A1 Recycling di:carboxylic acids and di:ol(s) from polyester waste |
05/14/1998 | CA2270532A1 Methods and devices for controlling the oxidation rate of a hydrocarbon by adjusting the ratio of the hydrocarbon to a rate-modulator |
05/14/1998 | CA2270521A1 Process for the preparation of an aldehyde |
05/14/1998 | CA2267603A1 Manufacture of adipic acid |
05/13/1998 | CN1181371A Method for purification of 2-hydroxynaphthalene -6 -carboxylic acid |
05/13/1998 | CN1181370A Method for prepn. of trichlorine acetylchloride |
05/12/1998 | US5750815 Olefin metathesis coupling using ruthenium and osmium carbene complexes |
05/12/1998 | US5750791 Producing diamines and diacids |
05/12/1998 | US5750779 Preparation process of acyl halide or sulfonyl halide |
05/12/1998 | US5750778 Fungicide intermediates |
05/12/1998 | US5750777 Process for the preparation of carboxylic acids by controlled oxidation of the corresponding alkanes |
05/12/1998 | US5750776 Production of dicarboxylic acids or esters thereof |
05/12/1998 | US5750732 Solvent extraction; dehydration |
05/12/1998 | US5750731 Perfluorinated aromatic compounds |
05/12/1998 | US5750679 Process for obtaining pharmacologically active compounds from complex mixtures of substances |
05/12/1998 | US5750007 Process for the recovery of a carbonylation product |
05/12/1998 | CA2013743C Preparation of glutaric acid derivatives |
05/07/1998 | WO1998018750A1 Process for preparing aromatic dicarboxylic acids |
05/07/1998 | WO1998018749A1 Production of aromatic carboxylic acids |
05/07/1998 | WO1998018748A1 Method for preparing compounds with terminal acetylenic bonds |
05/07/1998 | DE19645066A1 Production of catalyst for oxidation of butane to maleic anhydride |
05/07/1998 | CA2267413A1 Production of aromatic carboxylic acids |
05/07/1998 | CA2241568A1 Process for preparing aromatic dicarboxylic acids |
05/06/1998 | EP0839897A1 Method for producing conjugated linoleic acid |