C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides

Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
10/2002
10/30/2002	CN1093426C Distilling apparatus and distilling method
10/29/2002	US6472558 Iridium compound such as iridium hexachloride and methyl iodide catalyzed carbonylation of carbon monoxide and methanol in presence of polydentate alkyl or aryl phosphine oxide; increased selectivity; by product inhibition
10/29/2002	US6472557 Process for recycling polyesters
10/29/2002	US6472552 Promoted multi-metal oxide catalyst
10/29/2002	US6472546 Method for preparing non-photosensitive fatty acid silver salt grains and an apparatus for preparing the same
10/29/2002	US6471844 Process for the isolation of aromatic hydroxycarboxylic acids
10/29/2002	CA2291068C Method for the preparation of citalopram
10/29/2002	CA2106078C Processes for recovering citric acid
10/24/2002	WO2002083625A1 Ferulic acid dimers and their pharmaceutically acceptable salts, their preparation and use thereof for treating dementia
10/24/2002	WO2002083615A1 Method for producing acrylic acid by heterogeneously catalyzed gas phase oxidation of propene with molecular oxygen in a reaction zone
10/24/2002	WO2002083299A2 Palladium catalyst and processes for using the same
10/24/2002	WO2002070450A3 Method for the production of glyceric acid
10/24/2002	US20020156320 Enantioselective synthesis of valproic acid analogues
10/24/2002	US20020156313 Process for preparation of 2-phenyl acetic acid derivatives
10/24/2002	US20020156309 Metal salt of binaphthol derivative and method for preparing the same
10/24/2002	US20020156304 Catalytic reacting acetylene with epoxide
10/24/2002	DE10119737A1 Purification of an organic solvent used for the absorption of maleic acid anhydride from a gaseous mixture, comprises separation of a low and high boiling fractions from essentially pure solvent.
10/24/2002	DE10118814A1 Production of acrolein or acrylic acid involves absorption of propane and propene from a gas mixture followed by desorption and oxidation, with no catalytic dehydrogenation of propane and no added oxygen
10/24/2002	CA2412307A1 Method for the manufacture of acrylic or methacrylic acid
10/23/2002	EP1251135A2 High activity ruthenium or osmium metal carbene complexes for olefin metathesis reactions and synthesis thereof
10/23/2002	EP1251117A1 Method of treating fluorine compound and treated substance
10/23/2002	EP1251116A1 Method of treating fluorine compound
10/23/2002	EP1251115A1 Process for producing optically active carboxylic acid substituted in 2-position
10/23/2002	EP1250308A1 Process for the recovery of purified terephthalic acid (pta)
10/23/2002	EP1250307A1 Utilization of an extracting agent as antifoaming agent in the production of anhydrous formic acid
10/23/2002	EP1250306A2 Method for cleaning off-gas flows
10/23/2002	EP1250305A2 Waste water treatment in a method for producing formic acid which is free of water
10/23/2002	EP1250302A1 Method for producing carboxylic acids by alcohol oxidation
10/23/2002	EP0894517B1 Process for the industrial recovery of oleanolic and maslinic acids contained in the olive milling subproducts
10/23/2002	EP0883615B1 Additives usable in preparation of alkenyl succinic anhydride
10/23/2002	CN1376140A Process for separating o-and P-substituted benzene compounds
10/23/2002	CN1375488A Method for distillating (methyl) acrylic acid solution
10/23/2002	CN1375487A Method for preparing acrylic acid from propane under the condition of free-dioxygen
10/23/2002	CN1375486A Prepn. of cobalt acetate
10/23/2002	CN1093118C Method for producing acrylic acid
10/23/2002	CN1093117C Production method of acrylic acid
10/23/2002	CN1093116C Iridium catalysed carbonylation process for production of acetic acid
10/23/2002	CN1093115C Dicarboxylic acid crystallizates
10/23/2002	CN1093114C Improved process for recovering hydrogen in producing pure theraphthalic acid
10/23/2002	CN1093113C Improved method for producing crystalline carboxylic acid and apparatus therefor
10/23/2002	CN1093108C Method for preparing aromatic carboxylic acids, aromatic aldehydes, and aroamtic alcohols
10/22/2002	US6469206 Bonding strength, adhesion to polyolefins; storage stability
10/22/2002	US6469205 Method for oxidation of xylene derivatives
10/22/2002	US6469183 Method of producing phthalic acid anhydride
10/22/2002	US6469005 Propargylether derivatives
10/22/2002	US6468487 Nitration or carboxylation catalysts
10/17/2002	WO2002081422A1 Method and device for the two-step production of acrylic acid
10/17/2002	WO2002081421A1 Method for the production of acrylic acid or methacrylic acid by gas phase oxidation of propane or isobutane
10/17/2002	WO2002081083A1 Catalyst support with intersecting channel network, catalysis reactor comprising same and method for making same
10/17/2002	WO2002081047A1 Method for eliminating oxygenated organic molecules that are present in an organic effluent using alumina agglomerates
10/17/2002	WO2001096283A9 Hiv integrase inhibitors
10/17/2002	US20020151748 Fluorinated carboxylic acid recovery and reuse
10/17/2002	US20020151747 Method for the manufacture of acrylic or methacrylic acid
10/17/2002	US20020151746 Low energy carbonylation process
10/17/2002	US20020151745 Process for producing pyromellitic acid
10/17/2002	US20020151744 Kinetic resolutions of chiral 2-and-3-substituted carboxylic acids
10/17/2002	US20020151594 Method to treat chronic heart failure and/or elevated cholesterol levels using 3,5-diiodothyropropionic acid and method to prepare same
10/17/2002	US20020151436 Doped with iron, noble metals or other metals for use as hydrogenation catalysts
10/16/2002	EP1249442A1 Novel arylpropionaldehyde derivatives and production and use of the same
10/16/2002	EP1249274A1 NOx treated mixed metal oxide catalyst for use in oxidation and ammoxidation reactions of alkanes
10/16/2002	EP1248766A2 Methods for manufacturing betulinic acid
10/16/2002	EP1248763A2 Aromatic di-keto derivatives as glucose-6-phosphate translocase inhibitors
10/16/2002	EP1248762A1 Process for the preparation of ethers deriving from hydroxybenzoic acids
10/16/2002	EP1248677A1 Vanadium-phosphorus oxide catalysts with promoter reagents
10/16/2002	CN1374937A Process for producing pure terephthalic acid with improved recovery of precursors, solvent and mentyl acetate
10/16/2002	CN1374936A Sulfur containing promoter for alkanes oxidative dehydrogenation processes
10/16/2002	CN1092636C Method for fractional condensation of hot gas misture containing acrylic acid or methacrylic acid and having high proportion of non-condensable constients
10/16/2002	CN1092635C Recovery of light useful products from distillation residues in producing process of acrylic acid and its ester
10/16/2002	CN1092634C Preparation of maleic anhydride with n-butane gas phase catalytic oxidation by in site calcination and activation with catalyst
10/16/2002	CN1092541C Catalyst system used in process for production of acetic acid
10/15/2002	US6465688 Process for the preparation of trifluoromethyl-substituted biphenylcarboxylic acids and novel trichloromethyl-and trifluoromethyl-substituted biphenylcarbonitriles
10/15/2002	US6465685 Such as chloro-o-xylene, are oxidized in a solvent in the presence of a metal compound catalyst with addition of promoter after the reaction has proceeded to an intermediate stage; product comprises chlorophthalic acid or anhydride
10/15/2002	US6465684 Process for the separation of a mixture of enantiomers
10/15/2002	US6465680 Process for preparing malonate derivatives or β-keto esters from epoxide derivatives
10/15/2002	US6464895 Reagent and process which are useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function
10/10/2002	WO2002079139A1 Conjugated unsaturated glyceride mixtures and a method for producing the same
10/10/2002	WO2002079136A1 Enantiomerically selective cyclopropanation
10/10/2002	WO2002079135A1 Manufacture of cyclic aliphatic acids and esters
10/10/2002	WO2002079134A1 Process for the manufacture of phenylacetic acid derivatives
10/10/2002	WO2002079127A1 Selective ring-opening cross-metathesis of cycloolefins
10/10/2002	US20020147363 Method and apparatus for rapid screening of multiphase reactant systems
10/10/2002	US20020147357 Process for the preparation of perfluorocarboxylic acids
10/10/2002	US20020146454 Active compound is prepared in aqueous solution/ suspension; sprayed onto neutral excipients, without isolating active compound as solid substance, and dried in parallel with this, or, mixing with binder granulating with excipients and drying
10/10/2002	DE10117678A1 Verfahren und Vorrichtung zur zweistufigen Herstellung von Acrylsäure Method and apparatus for two-stage production of acrylic acid
10/10/2002	DE10117357A1 Verfahren zur Herstellung von Acrylsäure oder Methacrylsäure durch Gasphasenoxidation von Propan oder Isobutan A process for the production of acrylic acid or methacrylic acid by gas phase oxidation of propane or isobutane
10/10/2002	CA2442934A1 Enantiomerically selective cyclopropanation
10/10/2002	CA2442636A1 Selective ring-opening cross-metathesis of cycloolefins
10/10/2002	CA2442106A1 Conjugated unsaturated glyceride mixtures and a method for producing the same
10/09/2002	EP1246796A1 Process for the preparation of diphenyl ether compounds
10/09/2002	EP1246794A1 Process and intermediates for preparing a cyclohexylnitrile
10/09/2002	EP1246788A2 Method for catalytic gas phase oxidation to produce phthalic acid anhydride
10/09/2002	EP1246784A1 Reaction of carbonyl compounds with organometallic reagents
10/09/2002	EP1246696A2 Oxidative reactions using membranes that selectively conduct oxygen
10/09/2002	EP1104396B1 Method for recovering methyl acetate and residual acetic acid in the production of pure terephthalic acid
10/09/2002	EP1100954B1 Continuous process for preparing optically pure (s)-3,4-dihydroxybutyric acid derivatives
10/09/2002	EP1100953B1 CONTINUOUS PROCESS FOR PREPARING OPTICALLY PURE ($i(S))-3-HYDROXY-GAMA-BUTYROLACTONE
10/09/2002	EP1100952B1 Process for preparing optically pure (s)-3,4-dihydroxybutyric acid derivatives
10/09/2002	EP1100951B1 PROCESS FOR PREPARING OPTICALLY PURE ($i(S))-3-HYDROXY-GAMA-BUTYROLACTONE
10/09/2002	CN1373743A Method for purifying acid chlorides
10/09/2002	CN1373742A Method for producing acid chlorides

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