| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 10/09/2002 | CN1373118A Intelligent control method for reaction temp in liquid-phase oxidizing reactor of p-xylene |
| 10/09/2002 | CN1373117A Process for purifying hihg-content o-methylbenzoic acid |
| 10/09/2002 | CN1373115A Synthesizing process for phenylhydroxy acetic acid and its salts, and application thereof in treating malaria |
| 10/09/2002 | CN1092180C Continuous distillative separation of liquid mixtures which contain (meth) acrylic acid as main component |
| 10/09/2002 | CN1092179C Process for improving productivity of carbonylation catalyst solution by removing corrosion metals |
| 10/09/2002 | CN1092081C Process for producing coated catalyst for synthesis of maleic anhydride by gas-phase oxidation |
| 10/09/2002 | CN1092080C Catalyst and process for producing unsaturated aldehyde and unsaturated acid |
| 10/08/2002 | US6462233 Process for the preparation of sorbic acid |
| 10/08/2002 | US6462232 Acrolein-containing gas obtained by subjecting propylene to vapor phase oxidation is heated or cooled as needed for oxidation to acrylic acid |
| 10/08/2002 | US6462231 Method of producing carboxylic acid and alcohol |
| 10/08/2002 | US6462230 Continuously supplying waste oligomers in a molten state or liquid state to a reactor, along with super-critical water or high pressure/high temperature water to reactor, bringing the water into contact with wastes, decomposing to monomers |
| 10/08/2002 | US6462227 Stabilized o-iodoxybenzoic acid compositions and process for the preparation thereof |
| 10/08/2002 | US6462082 Use of hydroxyeicosatetraenoic acid derivatives in intraocular surgery |
| 10/08/2002 | US6461996 Halogen promoted multi-metal oxide catalyst |
| 10/08/2002 | US6461700 Aromatic acid monomers, polymers, products and processes for their manufacture |
| 10/08/2002 | CA2282570C Low water diamine/dicarboxylic acid salt preparation |
| 10/08/2002 | CA2271396C Process for the preparation of shikimic acid and its derivatives |
| 10/08/2002 | CA2108160C Chiral tridentate bis(phospholane) ligands |
| 10/08/2002 | CA2108033C Hydrogenation catalyst, process for preparing and process of using said catalyst |
| 10/08/2002 | CA2059719C Process for the production of terephthalic acid |
| 10/03/2002 | WO2002076920A1 Metathesis of unsaturated fatty acid esters or unsaturated fatty acids with lower olefins |
| 10/03/2002 | WO2002076917A1 Method for the continuous extraction of (meth)acrylic acid |
| 10/03/2002 | WO2002076611A1 Catalyst for synthesizing unsaturated aldehyde and unsaturated carboxylic acid, method of preparing the same, and method of synthesizing unsaturated aldehyde and unsaturated carboxylic acid with the catalyst |
| 10/03/2002 | WO2002076382A2 Preparation of polyaryl carboxylic acids |
| 10/03/2002 | WO2002018611A3 Method for the improved production and isolation of trans-dihydroxycyclohexadiene carboxylic acids and/or derivatives thereof and a genetically modified organism suitable for the above |
| 10/03/2002 | US20020143212 Process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid, and salt thereof |
| 10/03/2002 | US20020143208 Useful for the vapor phase oxidation of an alkane or a mixture of alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of alkane and an alkene to an unsaturated nitrile |
| 10/03/2002 | US20020143206 Oxidizing aldehyde as substrate to corresponding acid in presence of periodate, catalytic amounts of dichromate or CrO3, and in presence of acid in water, water/solvent mixture or in a solvent |
| 10/03/2002 | US20020143192 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 |
| 10/03/2002 | US20020142914 Polyoxometallate supported catalysts |
| 10/03/2002 | CA2442823A1 Preparation of polyaryl carboxylic acids |
| 10/02/2002 | EP1245556A1 Process for the preparation of carboxylic acids by aldehyde oxidation in presence of periodate, dichromate and acid in water |
| 10/02/2002 | EP1244613A2 Methods for producing cyanobenzoic acid derivatives |
| 10/02/2002 | EP1244609A1 Preparing method of 2-phenylalkanoic acid derivatives |
| 10/02/2002 | EP1152826A4 Phosphorus/vanadium maleic anhydride catalyst preparation |
| 10/02/2002 | DE10115405A1 Production of polyhalogenated cinnamic acid derivatives useful as intermediates in producing indanone derivatives, involves reacting diazonium salt with acrylic acid compound in presence of palladium catalyst |
| 10/02/2002 | CN1372537A Process for recovery of organics acids |
| 10/02/2002 | CN1091649C Process for preparing carboxylic acid salts and catalysts useful in such process |
| 10/02/2002 | CN1091622C Recovering method for sublimate |
| 10/01/2002 | US6458996 Process for the production of acetic acid |
| 10/01/2002 | US6458995 Methanol carbonylation processes utilizing a homogeneous iridium catalyst system comprises adding a rate-promoting amount of an insoluble pyridine ring-containing polymer. typically, polyvinylpyridine is added to the reactor |
| 10/01/2002 | US6458994 Liquid phase oxidation of polyalkyl-substituted aromatic aldehyde and/or oxide derivative in water solvent in presence of catalyst of bromine and heavy metal, producing trimellitic or pyromellitic acid; continuous/batch processing |
| 10/01/2002 | US6458990 Nitrogen-based halogenating agents and process for preparing halogen-containing compounds |
| 10/01/2002 | US6458989 Preparing pure (meth)acrylic acid or a (meth)acrylate starting from a crude (meth)acrylic acid, which comprises the following stages to remove aldehyde |
| 10/01/2002 | US6458975 Production methods of citalopram and an intermediate therefor |
| 10/01/2002 | US6458971 Subjecting an aliphatic hydrocarbon having four or more carbon atoms to gas phase oxidation reaction in the presence of a catalyst, of vanadium and phosphorous oxide |
| 10/01/2002 | US6458970 Catalytic gas-phase oxidation of o-xylene or naphthalene or o-xylene/naphthalene mixtures with a gas comprising molecular oxygen over a coated catalyst comprising an inert, nonporous support material on which a catalytically active titanium |
| 10/01/2002 | US6458956 One nitroxyl radical (derivative), b) at least one phenol (derivative) and c) at least one chemical compound which contains at least one phosphorus atom which has the oxidation state +3 is preferably used for stabilizing compounds for free |
| 10/01/2002 | US6458740 Method for preparing heteropolyacid catalyst and method for producing methacrylic acid |
| 10/01/2002 | US6458367 Method for detecting the presence of a mycobacterium species and a kit and antibodies for use therein |
| 10/01/2002 | US6458335 Production of powders |
| 10/01/2002 | CA2074828C Gold carboxylates and process for preparing the same |
| 09/26/2002 | WO2002074725A1 Novel ligands of nuclear receptor superfamily, process for producing the same and use thereof |
| 09/26/2002 | WO2002074403A1 Process for obtaining an organic acid from an organic acid ammonium salt, an organic acid amide, or an alkylamine organic acid complex |
| 09/26/2002 | WO2002074402A1 Azeotropic distillation process for producing organic acids or organic acid amides |
| 09/26/2002 | WO2001028969A3 Improved method for producing symmetrical anhydrides |
| 09/26/2002 | WO2001016078A9 Process for the receovery of disproportionation reaction products |
| 09/26/2002 | WO2000068290A3 Poly(3-cyclopropyl-3-hydroxypropionate) and processes for its preparation and derivatives thereof |
| 09/26/2002 | US20020137967 Process for the preparation of a carboxylic acid |
| 09/26/2002 | US20020137960 Process for producing aluminum diacetate monobasic |
| 09/26/2002 | US20020137958 Free-flowing; reacting feedstock with calcium oxide and water under given conditions; feed supplement for ruminent animals |
| 09/26/2002 | US20020137949 Novel method for converting dihydrotagetone, a bifuctional acyclic monoterpene ketone, isolated from the plant species of tagetes, into a coconut flavoured two chiral centered compound 5-isobutyl-3-methyl-4,5-dihydro-2(3H)-furanone as a novel analogue of natural whisky lactone and coconut aldehyde |
| 09/26/2002 | US20020136678 Fixed-bed shell-and-tube reactor and its usage |
| 09/26/2002 | US20020134660 Method for distilling (meth) acrylic acid solution |
| 09/26/2002 | CA2440987A1 Process for obtaining an organic acid from an organic acid ammonium salt, an organic acid amide, or an alkylamine organic acid complex |
| 09/26/2002 | CA2439883A1 Azeotropic distillation process for producing organic acids or organic acid amides |
| 09/25/2002 | EP1243573A1 Process for the preparation of diol mixtures |
| 09/25/2002 | EP1243333A2 High surface microporous materials which are active in oxidation reactions. tiq-6 and metiq-6 |
| 09/25/2002 | EP1243331A1 Catalyst for the production of unsaturated aldehydes and unsaturated carboxylic acids |
| 09/25/2002 | EP1243330A1 Production of unsaturated acids or esters thereof and catalysts therefor |
| 09/25/2002 | EP1242521A2 Recovery of modifier compounds and polar organic compounds from a poly(arylene sulfide) recycle mixture |
| 09/25/2002 | EP1242356A1 Perfluorinated acid fluorides and preparation thereof |
| 09/25/2002 | EP1242355A1 Method for producing diamine and carboxylic diacid salt |
| 09/25/2002 | EP1242354A1 Method and device for cooling a hot reactor gas, for example in the production of phthalic anhydride |
| 09/25/2002 | EP1242353A1 Process for the recovery and recycle of d-tartaric acid |
| 09/25/2002 | EP1212310A4 Production of maleic anhydride |
| 09/25/2002 | EP0968167B1 Process for the preparation of dicarboxylic acid crystals |
| 09/25/2002 | CN1371384A Process for purifying 2-keto-L-gluonic acid |
| 09/25/2002 | CN1371362A Process for preparation of isotretinoin |
| 09/25/2002 | CN1371353A Process for producing vic-dichloro acid fluoride |
| 09/25/2002 | CN1371352A Rhodiunlinorganic iodide catalyst system for methanol carbonylation process with improved impurity profile |
| 09/25/2002 | CN1371351A Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile |
| 09/25/2002 | CN1371350A Vapor phase carbonylation process using promoted iridium catalyst |
| 09/25/2002 | CN1371349A Vapor phase carbonylation process using promoted iridium catalyst |
| 09/25/2002 | CN1370817A High alkali cleaning additive |
| 09/25/2002 | CN1370767A Synthesis of optically pure R-and S-2-hydroxyl-4-aryl butyric acid |
| 09/25/2002 | CN1091440C Process for preparation of 13-cis-retionic acid |
| 09/25/2002 | CN1091397C Process for transformation of vanadium/phophorus mixed oxide catalyst precursor into active catalyst for production of maleic anhydride |
| 09/25/2002 | CN1091387C Device for phase separation |
| 09/24/2002 | US6455733 Solvent extraction; crystallization; precipitation; efficiency |
| 09/24/2002 | US6455732 Method for storing and/or transporting pure acrylic acid |
| 09/24/2002 | US6455731 Process for producing a high purity aromatic polycarboxylic acid |
| 09/24/2002 | US6455725 Such as methyl-4-chloro-2-(3-methoxy-3-oxo-1-propenyl)-benzoate; insecticide precursors |
| 09/24/2002 | US6455716 Isomerization with catalyst comprising crystalline porous structure (zeolite) with metal (group viii) incorporated therein |
| 09/24/2002 | US6455715 Method of producing dicarboxylic acids suitable for synthesis of polymers or polyamides |
| 09/24/2002 | US6454541 Method for transferring easily-polymerizable substance |
| 09/24/2002 | CA2230561C Improved metal-ligand complex catalyzed processes |
| 09/19/2002 | WO2002072858A2 Degradation of epothilones and ethynyl substituted epothilones |
| 09/19/2002 | WO2002072644A1 Solid-phase-supported transition metal catalysts |
| 09/19/2002 | WO2002072528A1 Fluorinated trienes and their use as rxr modulators |