| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 05/13/2009 | CN101429109A Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system |
| 05/13/2009 | CN101428226A Selective hydrogenation catalyst for fine purification of p-benzene dicarboxylic acid |
| 05/13/2009 | CN101428218A P-benzene dicarboxylic acid hydrogen refining catalyst and preparation method thereof |
| 05/13/2009 | CN100487351C Shell and tube heat exchanger and method for producing (melhyl) propenoic acid using said heat exchanger |
| 05/13/2009 | CN100486954C Method of handling highly viscous substance |
| 05/13/2009 | CN100486953C Method for retrieving organic acid, ester from cyclic ethane oxidation liquid |
| 05/13/2009 | CN100486952C Preparing process and apparatus for nano aromatic copper salt |
| 05/13/2009 | CN100486951C Process of producing aromatic carboxylic acid with diamine compound as catalyst |
| 05/13/2009 | CN100486701C Liquid phase reaction process of methyl acetate and CO to produce acetic anhydride and its catalyst preparing process |
| 05/13/2009 | CN100486696C Method for preparing unsaturated aldehyde, catalyst and method for synthesis |
| 05/12/2009 | US7531690 Palladium, tungsten and zirconium-based catalyst for production of oxygen-containing compound, production process of the catalyst, and production process of oxygen-containing compound using the catalyst |
| 05/12/2009 | US7531677 Reacting fatty acids or fats and oils and excess glycerol with an acidic or alkaline catalyst and immediate removal of water; washing crude product with organic solvent to remove impurities less polar than glycerol; washing with distilled water to remove other impurities; at least 97% purity |
| 05/12/2009 | CA2471422C Process for forming polyalkenyl acylating agents |
| 05/12/2009 | CA2306087C Lactic acid processing; methods; arrangements; and, products |
| 05/07/2009 | WO2009059228A2 Recovery of acetic acid from wood extracts |
| 05/07/2009 | WO2009058182A1 Acetaldehyde removal from methyl acetate by distillation at elevated pressure |
| 05/07/2009 | WO2009057463A1 Gas phase catalytic oxidation reaction process |
| 05/07/2009 | WO2009032728A3 Preparation of fatty acids in solid form |
| 05/07/2009 | WO2009024872A3 Improved process for the recovery of terephthalic acid |
| 05/07/2009 | WO2009024446A3 Process and device for the oxidation of organic compounds |
| 05/07/2009 | US20090118542 Process for Production of Optically Active Carboxlic Acid Compound |
| 05/07/2009 | US20090118539 forming diastereomeric mixture of norbornenecarbonitrile via Diels-Alder reaction, separating, converting to diastereomeric norbornenecarboxaldehyde, and norbornenecarboxylic acid and alcohol; methathesis ring-opening polymerization |
| 05/07/2009 | US20090118538 Process for preparation of pure acitretin |
| 05/07/2009 | US20090118536 Process for the Production of Aromatic Carboxylic Acids in Water |
| 05/07/2009 | US20090118515 Process for preparing intermediates useful to prepare certain antibacterial n-formyl hydroxylamines |
| 05/07/2009 | DE102007052640A1 Verfahren zur Hydroformylierung A process for the hydroformylation |
| 05/07/2009 | CA2704414A1 Recovery of acetic acid from wood extracts |
| 05/07/2009 | CA2704289A1 Acetaldehyde removal from methyl acetate by distillation at elevated pressure |
| 05/06/2009 | EP2055378A1 Method for preparing ruthenium-carrying alumina and method for oxidizing alcohol |
| 05/06/2009 | EP2054376A1 Process for preparing carboxamides by hydrolysis of carboxylic acid nitriles in the presence of a catalyst comprising manganese dioxide |
| 05/06/2009 | EP2054367A2 Process for the preparation of sodium salt of ibuprofen of different particle sizes |
| 05/06/2009 | EP2054366A2 Process for the reduction of aldehyde concentration in a target stream |
| 05/06/2009 | EP1240130B1 Method for oxidation of xylene derivatives |
| 05/06/2009 | CN101426798A Metal-organic zirconium-based framework materials |
| 05/06/2009 | CN101426797A Methods for producing metal-organic framework materials containing metals of subgroup IV |
| 05/06/2009 | CN101426755A Method for preparing an organic amine-lactic acid complex |
| 05/06/2009 | CN101423478A Method for producing hexane diacid and hexanediamine by using nylon-66 disaggregation |
| 05/06/2009 | CN101423471A Method for preparing high-purity octanoic acid and capric acid |
| 05/06/2009 | CN101423470A Synthetic method of 2-methyl enanthic acid |
| 05/06/2009 | CN101423469A Oxidation process for aromatic compound |
| 05/06/2009 | CN101423449A Method for stabilising olefinically unsaturated monomers |
| 05/06/2009 | CN100484912C Carboxylic acid preparing process |
| 05/06/2009 | CN100484629C Method for catalytic oxidation of saturated hydrocarbons compound |
| 05/06/2009 | CN100484626C Process for producing metal oxide catalyst |
| 05/05/2009 | US7528281 Method for vapor phase catalytic oxidation |
| 05/05/2009 | US7528272 Biodiesel process |
| 05/05/2009 | US7528266 Process for the preparation of 7-substituted 3-alkyl-3H-isobenzofuran-1-one derivatives |
| 05/05/2009 | CA2279055C Process for the production of acetic acid |
| 04/30/2009 | WO2009055406A2 Improved oxidation catalyst for maleic anhydride production |
| 04/30/2009 | WO2009054424A1 Process for producing aromatic carboxylic acid |
| 04/30/2009 | WO2009053341A2 Method for the oxidation of cycloaliphatic alcohols, cycloaliphatic ketones, or mixtures thereof with aqueous nitric acid and treatment of the dicarboxylic acids |
| 04/30/2009 | WO2009024549A3 Process and apparatus for oxidizing organic compounds |
| 04/30/2009 | WO2006023798A3 Process for preparing hydroxy functional vegetable oils |
| 04/30/2009 | US20090107034 Method of producing a fatty acid alkyl ester, and fuel |
| 04/30/2009 | DE102007051694A1 Kupfer-Sauerstoff-Adduktkomplexe Copper-oxygen adduct |
| 04/30/2009 | CA2702779A1 Improved oxidation catalyst for maleic anhydride production |
| 04/29/2009 | EP2053066A1 Use of methylene blue as polymerization inhibitor |
| 04/29/2009 | EP2053032A1 Method for producing optically active hydroxycarboxylic acid derivative or salt thereof |
| 04/29/2009 | EP2051956A1 Process for obtaining an organic salt or organic acid from an aqueous sugar stream |
| 04/29/2009 | CN101421221A Method for producing 3,3,3-trifluoropropionic acid chloride |
| 04/29/2009 | CN101421220A Method of crystallization |
| 04/29/2009 | CN101421219A Process for the preparation of carboxylic acids and/or derivatives thereof |
| 04/29/2009 | CN101421214A Process for hydroformylation of propylene |
| 04/29/2009 | CN101421039A Process for the preparation of carbonylation products |
| 04/29/2009 | CN101421036A Catalyst system for preparing carboxylic acids and/or carboxylic anhydrides |
| 04/29/2009 | CN101417947A Method for preparing alkoxyl benzoic acids compounds |
| 04/29/2009 | CN101417946A Method for preparing pentachlorobenzoyl chloride |
| 04/29/2009 | CN101417945A Method for preparing 4-bromo-2,3,5,6-3-fluorophenylacetic acid |
| 04/29/2009 | CN101417944A Method for preparing 2,6-naphthalenedicarboxylic acid from 2,6-di-t-butyl naphthalin |
| 04/29/2009 | CN101417943A Simple method and system for refining mother liquor by high efficiency recovery and utilization of PTA apparatus |
| 04/29/2009 | CN101417942A Method for preparing p-hydroxymandelic acid |
| 04/29/2009 | CN101417941A Method for preparing ferrous oxalate hydrous salt crystal |
| 04/29/2009 | CN101417940A Method for preparing rare earth dilaurate |
| 04/29/2009 | CN101417939A Method for preparing caprylic-1-<13>C |
| 04/29/2009 | CN100482632C Preparation of (R)-2-alkyl-3-phenylpropionic acids |
| 04/29/2009 | CN100482631C Method of preparing boron lithium dioxalate complex salt |
| 04/28/2009 | US7524988 Reacting methanol and carbon monoxide with carbonylation catalyst, stabilizer, methyl iodide, water and methyl acetate; flashing to form vapor and liquid streams; distilling and condensing vapor stream; reacting heavy phase containing aldehyde with an alcohol, glycol or glycerine to form an acetal |
| 04/28/2009 | US7524987 Propane is partially dehydrogenated in a reaction zone, hydrogen formed is incinerated partly to water and product gas is charged directly to another reaction zone, where propylene formed is partially oxidized; product removed; CO2 scrubbed from residual gas and discharged recycled to first reaction zone |
| 04/28/2009 | US7524986 Methods for producing aromatic carboxylic acids |
| 04/28/2009 | US7524982 Process for the production of biodiesel in continuous mode without catalysts |
| 04/28/2009 | US7524886 L-(−)-moprolol L-(+)-tartrate |
| 04/28/2009 | US7524792 Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu |
| 04/28/2009 | CA2297636C Process for preparing cyanoacetic esters |
| 04/23/2009 | WO2009052341A1 Gsm intermediates |
| 04/23/2009 | US20090105501 Method for producing lactic acid ester |
| 04/23/2009 | US20090105500 reacting carbon monoxide with an alcohol to form an acid or ester using heteropoly acid ion exchanged with rhodium, iridium, copper or palladium and lithium, sodium, potassium or rubidium; e.g. reacting methanol and carbon monoxide to form acetic acid |
| 04/23/2009 | US20090105335 from high glyceride content polyunsaturated oils, including fish oils; saponification of fatty acid with mono or divalent metal hydroxide (potassium, calcium, copper, magnesium); antioxidant stabilizing oil; free flowing; storage stable; nutritional supplement; pet food |
| 04/23/2009 | DE102007050713A1 Producing dicarboxylic acid e.g. oxalic acid, malonic acid, succinic acid, glutaric acid, undecanedioic acid, adipic acid or dodecanedioic acid, comprises oxidation of cycloaliphatic alcohols and/or cycloaliphatic ketones with nitric acid |
| 04/23/2009 | CA2702911A1 Gsm intermediates |
| 04/22/2009 | EP2050776A1 Polymer having bis(diphenylphosphino)binaphthyl group |
| 04/22/2009 | EP2050733A1 Method for purifying hydroxycarboxylic acid, method for producing cyclic ester, and method for producing polyhydroxycarboxylic acid |
| 04/22/2009 | EP2050732A1 Method of replacing dispersion medium |
| 04/22/2009 | EP2049463A1 A process for the preparation of optically active cyclopropylamines |
| 04/22/2009 | EP2049254A2 Process for regenerating ruthenium catalysts for the ring hydrogenation of phthalates |
| 04/22/2009 | EP2049253A2 Process for regenerating ruthenium catalysts which are suitable for hydrogenation |
| 04/22/2009 | EP1572844B1 Method for producing conjugated linoleic acid |
| 04/22/2009 | EP1500432B1 Method for oxidizing alcohol on a ruthenium-carrying alumina catalyst |
| 04/22/2009 | EP1377537B1 Metathesis of unsaturated fatty acid esters or unsaturated fatty acids with lower olefins |
| 04/22/2009 | EP1286942B1 Method and catalyst for the selective production of acetic acid by catalytic oxidation of ethane and/or ethylene |
| 04/22/2009 | CN101415668A Methods for producing carboxylic acid chloride compounds |