| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 07/13/2005 | EP1131277B1 Method of modifying components present in cashew nut shell liquid |
| 07/13/2005 | CN1639109A Dynamic resolution of isomers and resolved isomers |
| 07/13/2005 | CN1639106A Method of preparing phenoxy alkanoic, alkenoic, and alkynoic acids and salts thereof via a dicarboxylate intermediate |
| 07/13/2005 | CN1639102A Oxidation process in fluidised bed reactor |
| 07/13/2005 | CN1639100A Process for producing (meth)acrylic acid |
| 07/13/2005 | CN1639095A Process for catalytic vapor phase oxidation |
| 07/13/2005 | CN1639092A Alkene separation process |
| 07/13/2005 | CN1638863A Method for preparing a catalyst for partial oxidation of acrolene |
| 07/13/2005 | CN1638855A Method and apparatus for controlling feed of gaseous reaction component |
| 07/13/2005 | CN1636959A Process for producing pyromellitic acid |
| 07/13/2005 | CN1636958A Process for manufacturing reduced water content (meth)acrylic acid |
| 07/13/2005 | CN1636957A Process for preparation of (2R)-2-propyloctanoic acid |
| 07/13/2005 | CN1636953A Catalytic gas phase oxidation reaction |
| 07/13/2005 | CN1636632A Catalyst systems for converting alkanes to alkenes and to their corresponding oxygenated products |
| 07/13/2005 | CN1210281C Titanium derived compounds, rpeparation an use thereof |
| 07/13/2005 | CN1210252C Process for the preparation of 4-carboxy-5,8,11-tris (carboxymethyl)-1-phenyl-2-oxa-5,8,11-triazatridencan-13-oic acid |
| 07/13/2005 | CN1210246C Distillation method of solution with easy-to-polymerize material |
| 07/13/2005 | CN1210239C Process for producing unsaturated aldehyde and unsaturated carboxylic acid |
| 07/13/2005 | CN1210103C Catalysts for the oxidation of ethane to acetic acid and ethylene, methods of making and using the same |
| 07/12/2005 | US6916959 Halogen-containing aromatic compound |
| 07/12/2005 | US6916954 Comprises carbon monoxide and nucleophilic compound comprising palladium, phosphine, and polyethyleneimine |
| 07/12/2005 | US6916952 Method for preparing acetic acid and or methyl acetate in the presence of iridium and platinum |
| 07/12/2005 | US6916951 Continuous carbonylation process |
| 07/12/2005 | US6916945 NOx treated mixed metal oxide catalyst |
| 07/12/2005 | US6916763 Process for preparing a catalyst for the oxidation and ammoxidation of olefins |
| 07/07/2005 | WO2005061556A1 Method of evaluating polymerizability of (meth)acrylic acid mixture |
| 07/07/2005 | WO2005061428A1 Method for purifying (meth)acrylic acid and method for producing (meth)acrylic ester |
| 07/07/2005 | WO2005061427A2 Method for the production of substituted 2-(phenoxymethyl)-benzoic acids |
| 07/07/2005 | WO2005061414A1 Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system |
| 07/07/2005 | WO2004052819A8 Method for reducing mehq content in acrylic acid |
| 07/07/2005 | US20050148794 comprising a chlorination step and a hydrogenation step and is characterized in that process includes the removal of aldehydes from process stream by oxidation using a peroxycarboxylic acid; proceeds faster, is more selective, and requires less oxidizing agent than when hydrogen perox ide is used |
| 07/07/2005 | US20050148793 under conditions such that a heat transfer coefficient of the heat medium is 1,000 W/(m2*K) or higher, and preventing the reaction of vapor phase catalytic oxidation in an area of the reactor having a heat transfer coefficient of the heat medium less than 1,000 W/(m2*K) |
| 07/07/2005 | US20050148791 Without prior removal of oxygen; catalytic oxidation of alkane to alkene and carboxylic acid; selective chemical absorption from mixed gas stream into metallic salt solution then recovering |
| 07/07/2005 | US20050148783 Nonexplosive intermediates for preparation of fluoropolymers; environmentally friendly; including stable, high yield hypofluorite reactive molecules |
| 07/07/2005 | US20050148782 Gas phase oxidation of xylene and/or naphthalene in a shell-and-tube reactor thermostatted by means of a heat transfer medium over three or more different fixed-bed catalysts arranged in zones such that the maximum temperature in the second and third zones are lower than in the first; high yields |
| 07/07/2005 | CA2550627A1 Method for the production of substituted 2-(phenoxymethyl)-benzoic acids |
| 07/06/2005 | EP1549604A1 A process for the preparation of monochloroacetic acid |
| 07/06/2005 | EP1549603A1 Microporous catalyst and method for hydrogenating aromatic compounds |
| 07/06/2005 | EP1549602A2 Process for producing carboxylic acid and system for producing the same |
| 07/06/2005 | EP1549601A2 Improvements in metal salts |
| 07/06/2005 | EP1549432A1 Mixed metal oxide catalyst and process for production of acetic acid |
| 07/06/2005 | CN1636004A Process for the manufacture of hmg-coa reductase inhibitory mevalonic acid derivatives |
| 07/06/2005 | CN1635990A Method for producing 2-hydroxyisobutyric acid and methacrylic acid from acetone cyanohydrin |
| 07/06/2005 | CN1635989A Preparation of phthalic anhydride |
| 07/06/2005 | CN1635883A Preparation of polyaryl carboxylic acids |
| 07/06/2005 | CN1634850A Method for preparing superfine salicylic acid by adding polyhydroxy alcohol organic compounds |
| 07/06/2005 | CN1634849A One step synthesis method for 4, 6-dihydroxy-1, 3-benzene dicarboxylic acid and 2, 3-dihydroxy-1, 4-benzene dicarboxylic acid |
| 07/06/2005 | CN1634848A Process for producing terephthalic acid and device therefor |
| 07/06/2005 | CN1634847A Synthesis process for preparing glyoxalic acid solution by oxygen catalytic oxidation of glyoxal with nitrogen oxide |
| 07/06/2005 | CN1634846A Process for preparing sodium stibogluconate |
| 07/06/2005 | CN1634844A Process for preparing potassium sorbate |
| 07/06/2005 | CN1634843A Acetic acid refining method for improving acetic acid potassium permanganate test time |
| 07/06/2005 | CN1634842A Method for refining acetic acid |
| 07/06/2005 | CN1634841A Method for solid polyphase catalytic synthesis of acetic acid |
| 07/06/2005 | CN1209340C Method for preparing malonate |
| 07/06/2005 | CN1209338C Production process of pyrogallic acid |
| 07/06/2005 | CN1209337C Method for preparing sorbic acid |
| 07/06/2005 | CN1209336C Process for preparation of 2-halobenzoic acids |
| 07/06/2005 | CN1209335C Method for producing aromatic carboxylic acid |
| 07/06/2005 | CN1209334C Method and apparatus for sequestering entrained and volatile catalyst species in a carbonylation process |
| 07/06/2005 | CN1209333C Process for preparation of sorbic acid or salts thereof |
| 07/06/2005 | CN1209332C Method for producing acrolein and/or acrylic acid |
| 07/05/2005 | US6914155 High polymer gel and activation method for compounds containing active hydrogen |
| 07/05/2005 | US6914150 Vapor phase oxidation, ammoxidation using catalyst |
| 07/05/2005 | US6914029 An active and selective hydrocarbon partial oxidation catalyst comprises an activated partially-reduced polyoxometallate, preferably niobium polyoxomolybdate, that is prepared from a suitable polyoxoanion, which has been |
| 07/05/2005 | US6913734 Contacting a gaseous reactant and a liquid selected from the group consists of reactants, coolants and mixtures in presence of fluidized bed of catalyst, liquid and gaseous reactant are introduce into reactor through different inlets |
| 06/30/2005 | WO2005058850A1 Process for the separation of organic hydroxylamine and nitrosonium compounds and its use in the oxidation of hydroxy compounds |
| 06/30/2005 | WO2005058791A1 Carboxylic acid compound, epoxy compound obtained from the carboxylic acid compound, and cured epoxy resin |
| 06/30/2005 | WO2005058785A1 Method for producing (meth)acrylic acid or (meth)acrolein |
| 06/30/2005 | WO2005058498A1 Catalysts for alkane or alkene oxidation and ammoxidation |
| 06/30/2005 | WO2005058497A1 Catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid, method for producing same, and method for producing unsaturated aldehyde and unsaturated carboxylic acid |
| 06/30/2005 | WO2005058475A1 Catalyst filling method |
| 06/30/2005 | US20050143604 Method for producing acrylic acid |
| 06/30/2005 | US20050143603 unsaturated hydrocarbons can be subjected to selective allylic or vinylic oxidation by simple variation of the ligand; By using liquid phase containing acrylic acid in preparation of polymers, cost- and time-consuming concentration steps on acrylic acid can be avoided |
| 06/30/2005 | US20050143602 free from recesses formed on an inner surface of a reactor body thereof so as to conduct a stable oxidation reaction therein; reaction production gas is prevented from being condensed and polymerized in the sampling tube, thereby ensuring a long-term stable analysis with a high efficiency |
| 06/30/2005 | US20050143601 Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system |
| 06/30/2005 | US20050143600 using a palladium catalyst, having one- or more ligands containing coordinating nitrogen and/or oxygen and/or phosphorus atoms, to catalyze carbonylation of enol ester in presence of hydroxyl compound to yield 2-acetoxy ester and/or 2-hydroxy ester of corresponding carboxylic acid; catalysts are reusable |
| 06/30/2005 | US20050143597 alkyne compounds (acetylene compounds) over a wide range can be used; reacting an alkyne compound with water in the presence of a gold catalyst which is an organogold complex compound and acid in an organic solvent |
| 06/30/2005 | US20050143593 Process for producing 2-aralkylpropionic acid derivative |
| 06/30/2005 | CA2549458A1 A process for the liquefaction of lignocellulosic material |
| 06/29/2005 | EP1547994A1 Method of vapor phase catalytic oxidation using multitubular reactor |
| 06/29/2005 | EP1546295A2 Conjugated linoleic acid compositions |
| 06/29/2005 | EP1546082A1 New conjugated linolenic acids and methods for commercial preparation and purification |
| 06/29/2005 | EP1546081A2 Process for preparing fluorocarboxylic acids |
| 06/29/2005 | EP1546080A1 Method for carrying out heterogeneously catalysed gas phase partial oxidation of acrolein to form acrylic acid |
| 06/29/2005 | EP1546079A1 Process for the production of acetic acid |
| 06/29/2005 | EP1546074A1 Method for the production of at least one partial propylene oxidation and/or ammoxidation product |
| 06/29/2005 | EP1546073A1 Method for the production of at least one partial propylene oxidation and/or ammoxidation product |
| 06/29/2005 | EP0892773B1 Preparation of aromatic hydroxycarboxylic acids and dialkali metal salts thereof |
| 06/29/2005 | CN1633410A Substituted methylene amide derivatives as modulators of protein tyrosine phosphatases(ptps) |
| 06/29/2005 | CN1633406A Process for the production of metal salts of radical-polymerizable compounds |
| 06/29/2005 | CN1633336A Catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid and process for producing the same |
| 06/29/2005 | CN1208304C Lactic acid separating and purifying process |
| 06/29/2005 | CN1208303C Process for producing (methyl) acrylic acid |
| 06/29/2005 | CN1208302C Production process of itaconic anhydride |
| 06/29/2005 | CN1208301C Air lift externally circulating bubble tower oxidation unit for producing terephthalic acid |
| 06/29/2005 | CN1208300C Method of gas phase catalytic oxidation to give maleic acid anhydride |
| 06/29/2005 | CN1208299C Solvent-free synthesis process for simultaneously producing 2, 4-dihydroxybenzoic acid and 2, 6-diydroxybenzoic acid |
| 06/29/2005 | CN1208128C Cocatalytic polymetallic oxide catalyst |
| 06/28/2005 | US6911556 Processes for the preparation of olefins, unsaturated carboxylic acids and unsaturated nitriles from alkanes |