| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 10/03/2007 | EP1339664B1 Production of butane tetracarboxylic acid derivatives by means of coupled electrosynthesis |
| 10/03/2007 | CN101048362A Process for removal of impurities from an oxidizer purge stream |
| 10/03/2007 | CN101048361A Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid |
| 10/03/2007 | CN101048360A Process for the synthesis of zirconium carboxylates |
| 10/03/2007 | CN101048340A 分离气体的方法 Method of separating gases |
| 10/03/2007 | CN101048139A Compositions for controlled delivery of pharmaceutically active compounds |
| 10/03/2007 | CN101045684A Method of preparing 2-hydroxynaphthyl-3,6-diformic acid |
| 10/03/2007 | CN101045683A Method of preparing high-purity terephthalic acid |
| 10/03/2007 | CN101045682A Method for retrieving organic acid, ester from cyclic ethane oxidation liquid |
| 10/03/2007 | CN101045681A Method for producing heavy stearate by reaction extrusion process of screus reactor |
| 10/03/2007 | CN101045680A Method for producing oxalate by tobacco waste material |
| 10/03/2007 | CN100340538C Method for preparing bromopentoic acid |
| 10/02/2007 | US7276633 Dehalogenation, carboxylation, decarboxylation, salt formation, desalting, oxidative desulfurization, fluorination, acidification, protonation, deprotonation, bromination |
| 10/02/2007 | US7276626 Carbonylation process using metal-tridentate ligand catalysts |
| 10/02/2007 | US7276625 Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
| 10/02/2007 | CA2372903C Process for brominating the side chain of 4-methylbiphenyl derivatives substituted in the 2' position |
| 09/30/2007 | CA2581987A1 Process for the purification of lanthanide carboxylates |
| 09/27/2007 | WO2007107724A1 Process for the production of acetic acid |
| 09/27/2007 | WO2007003200A3 High yield synthesis methods for producing organic salts of strontium |
| 09/27/2007 | US20070225522 Polymerization of 3-(acryloyloxy)propionic acid; improved thickening effect |
| 09/27/2007 | US20070225521 carbonylation of methanol in presence of carbon monoxide and ruthenium-based catalysts |
| 09/27/2007 | US20070225520 Stereoselective Synthesis of a 4,4-Disubstituted Cyclohexanepropanoic Acid |
| 09/27/2007 | US20070225519 transforming optically active sec-alcohol into an activated compound with a leaving group; alkyating malonic acid in ether or ester solvents; added cosolvent is not hexamethyl phosphoric acid triamide; decarboxylation; 3-methylhexanoic acid; industrial scale; stereoselective inversion; no racemization |
| 09/27/2007 | US20070225384 Methanol is reacted with oxygen to produce a syngas stream; syngas stream is separated into a carbon dioxide rich stream and a mixed stream containing hydrogen/carbon monoxide; mixed stream is separated into a hydrogen-rich stream and a carbon monoxide-rich stream |
| 09/27/2007 | US20070220688 Alpha-Hydroxy-Benzeneacetic Acid Derivatives, and Compounds Having Two 5-Membered Latone Rings Fused to Central Cyclohexa-1,4-Diene Nucleus Based Upon the Same, and Uses of the Compounds |
| 09/27/2007 | CA2645337A1 Process for the production of acetic acid |
| 09/26/2007 | EP1836002A2 Process for the production of strongly adherent coatings |
| 09/26/2007 | EP1323703B1 Process for producing fluorinated ester compound |
| 09/26/2007 | EP1015410B2 Method for producing acrylic acid and methacrylic acid |
| 09/26/2007 | CN101044108A Cage-shaped cyclobutanoic dianhydrides and process for production thereof |
| 09/26/2007 | CN101041649A Production method of reclaiming vitamin C and gulonic acid from vitamin C mother liquid |
| 09/26/2007 | CN101041617A Method for producing citric acid bismuth, oxalic acid bismuth and bismuth subsalicylate by electrolyzing active metal bismuth |
| 09/26/2007 | CN101041616A Method for purifying terephthalic acid from waste material |
| 09/26/2007 | CN101041615A Method for catalytic hydrogenation of six carbocyclic compound by schiff bases-porphyrin metallic compound |
| 09/26/2007 | CN101041466A Method for producing dichromium trioxide and ferrous oxalate by carbon ferro-chrome |
| 09/26/2007 | CN101041135A Method for the selective production of acetic acid by catalytic oxidation of ethane and/or ethylene |
| 09/26/2007 | CN100339353C Preparation method and use of alpine yarrow herb ketoacid |
| 09/26/2007 | CN100339351C Method for separating remaining sugar and extracting organic acid from organic acid fermentation liquor and corresponding organic acid mother liquor |
| 09/26/2007 | CN100339350C Process for organic acid extraction from fermentation liquid using membrane method |
| 09/26/2007 | CN100339349C Preparation method of long chain fatty acid calcium salt |
| 09/26/2007 | CN100339348C Method for the production of benzophenonen |
| 09/26/2007 | CN100339340C Method of controlling operation of gas-phase reactor |
| 09/25/2007 | US7273950 Feeding a reaction mixture into a stirred oxidation reactor at specific locations, thereby increasing the efficiency of the oxidation reaction; reactor for liquid-phase oxidation of an aromatic alkyl to an aromatic carboxylic acid |
| 09/25/2007 | US7273593 Comprising a bundle of catalyst tubes, through whose space surrounding the catalyst tubes a heat exchange medium is passed, a pump for circulating the heat exchange medium; especially for oxidation reactions |
| 09/25/2007 | CA2301066C Method for purifying lactic acid |
| 09/25/2007 | CA2217028C Recovery of acetic acid from dilute aqueous streams formed during a carbonylation process |
| 09/20/2007 | WO2007106289A1 Oxidation system with sidedraw secondary reactor |
| 09/20/2007 | WO2007106288A2 Polycarboxylic acid production system employing enhanced evaporative concentration downstream of oxidative digestion |
| 09/20/2007 | WO2007106287A1 Polycarboxylic acid production system with enhanced residence time distribution for oxidative digestion |
| 09/20/2007 | WO2007106099A1 Method for the preparation of alpha-beta-unsaturated carbonyl compounds |
| 09/20/2007 | WO2007105711A1 Process for production of adamantyl (mono- or poly-)acetate, and process for production of adamantyl (mono- or poly-)ethanol using the same |
| 09/20/2007 | WO2007105523A1 Method for producing unsaturated aldehyde and unsaturated carboxylic acid |
| 09/20/2007 | WO2007014204A3 Catalyst for methacrolein oxidation and method for making and using same |
| 09/20/2007 | US20070219397 Method for conversion of beta-hydroxy carbonyl compounds |
| 09/20/2007 | US20070219395 2-(3-Hydroxyphenoxymethyl)-6-methylbenzoic Acid as chemical intermediate for synthesizing PPAR agonists and antagonists |
| 09/20/2007 | US20070219394 Oxidizing a N-(5-alkoxy-2-methyl-4-nitrophenyl)acetamide with potassium permanganate in solution of water and a cosolvent in the presence of magnesium sulfate |
| 09/20/2007 | US20070219393 dialkyl aromatic compound (e.g., para-xylene) is oxidized to produce a crude aromatic dicarboxylic acid (e.g., crude terephthalic acid), and the resulting crude aromatic dicarboxylic acid is thereafter subjected to purification and separation to produce a purified aromatic dicarboxylic acid |
| 09/20/2007 | US20070219392 Polycarboxylic acid production system with enhanced heating for oxidative digestion |
| 09/20/2007 | US20070219384 Method of making esters and catalysts therefore |
| 09/20/2007 | US20070219339 Chemical Process For Recycling Polyethylene Terephtalate (Pet) Waste |
| 09/20/2007 | CA2643523A1 Oxidation system with sidedraw secondary reactor |
| 09/19/2007 | EP1834943A1 Process for producing aromatic dicarboxylic acid |
| 09/19/2007 | EP1833758A1 Method for separating gas |
| 09/19/2007 | EP1833603A1 Method of preparing acrylic acid from propane in the absence of water vapour |
| 09/19/2007 | EP1395536B1 Oxidative halogenation of c1 hydrocarbons to halogenated c1 hydrocarbons and integrated processes related thereto |
| 09/19/2007 | EP1300386B1 Method for producing fluorine-containing compound |
| 09/19/2007 | CN101040029A Propylene hydroformylation |
| 09/19/2007 | CN101039897A Method for preparing (meth)acrylic esters or anhydrides |
| 09/19/2007 | CN101039748A Process for producing metal oxide catalyst |
| 09/19/2007 | CN101037400A Preparation method of L-Ornithine-Malic Acid |
| 09/19/2007 | CN101037386A Synthesizing method of chloride |
| 09/19/2007 | CN101037385A Method for synthesizing 2,4-Dichlorobenzoyl chloride |
| 09/19/2007 | CN100338051C Method for preparation of citalopram |
| 09/19/2007 | CN100338008C 1-carboxy-1-(3,5-dimethoxy phenyl)-2-(4-R group phenyl) ethano and preparation method thereof |
| 09/19/2007 | CN100338007C Process for the purification of a crude carboxylic acid slurry |
| 09/19/2007 | CN100338006C Purification of alpha-, bera- or gamma-substituted carboxylic acids |
| 09/19/2007 | CN100338005C Method of oxidising hydrocarbons to acids |
| 09/19/2007 | CN100338002C Method for the isolation of trimethylolpropane and sodium formate from a reaction mixture |
| 09/19/2007 | CN100337750C Catalyst system for carbonylation of methanol for synthesizing ethanol, and application |
| 09/19/2007 | CN100337746C Method for reactivating catalyst for production of methacrylic acid |
| 09/18/2007 | US7271297 Process for producing vinyl ether compounds |
| 09/18/2007 | US7271293 distilling a mixture containing methyl iodide and acetaldehyde in a distillation apparatus to produce an overhead and a residuum; measuring the density of the overhead; and adjusting at least one process variable associated with said distillation apparatus |
| 09/18/2007 | US7271287 Process for producing aromatic hydroxycarboxylic acids |
| 09/18/2007 | US7271286 incubating CO2 and a strong Lewis acid at incubation conditions to produce a resulting mixture; reacting composition consisting essentially of CO2, strong Lewis acid, and Lewis acid: CO2 complex with an aromatic hydrocarbon at effective reaction pressure and effective reaction temperature |
| 09/18/2007 | US7271285 Process for producing aromatic carboxylic acids |
| 09/18/2007 | CA2445063C Crystallization method for production of purified aromatic dicarboxylic acids |
| 09/18/2007 | CA2271162C Stearidonic acid compositions and uses thereof |
| 09/13/2007 | WO2007103068A1 Methods and apparatus for isolating carboxylic acid |
| 09/13/2007 | WO2007103067A1 Versatile oxidation byproduct purge process |
| 09/13/2007 | WO2007103066A1 Carboxylic acid production process |
| 09/13/2007 | WO2007103064A1 Versatile oxidation byproduct purge process |
| 09/13/2007 | WO2007103063A2 A process to produce a post catalyst removal composition |
| 09/13/2007 | WO2007103039A2 Versatile oxidation byproduct purge process |
| 09/13/2007 | WO2007103029A1 Polycarboxylic acid production system employing enhanced multistage oxidative digestion |
| 09/13/2007 | WO2007103028A2 Polycarboxylic acid production system employing hot liquor removal downstream of oxidative digestion |
| 09/13/2007 | WO2007103024A2 Polycarboxylic acid production system employing cooled mother liquor from oxidative digestion as feed to impurity purge system |
| 09/13/2007 | WO2007103023A1 Methods and apparatus for isolating carboxylic acid |
| 09/13/2007 | WO2007103022A1 Methods and apparatus for producing a low-moisture carboxylic acid wet cake |
| 09/13/2007 | WO2007103021A1 Carboxylic acid production process |
| 09/13/2007 | WO2007102512A1 Method for producing 4-oxoquinoline compound |