| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 01/23/2003 | US20030017944 Mixed oxide catalyst |
| 01/23/2003 | US20030017095 Reactor having a heat exchange medium circulation |
| 01/23/2003 | CA2453330A1 Skeketal isomerization of fatty acids |
| 01/22/2003 | EP1277726A1 Process for the preparation of 2-halobenzoic acids |
| 01/22/2003 | EP1276709A2 Methods for preparing cla isomers |
| 01/22/2003 | EP1276559A2 Catalysts for the oxidation of unsaturated aldehydes to produce carboxylic acids, methods of making and using the same |
| 01/22/2003 | EP1276558A2 Catalysts for the oxidation of ethane to acetic acid and ethylene, methods of making and using the same |
| 01/22/2003 | EP1198445B1 A method for the separation of and purification of an aqueous mixture consisting of the main components acetic acid and formic acid |
| 01/22/2003 | EP1175154A4 Method for manufacturing rumen bypass feed supplement |
| 01/22/2003 | EP1000006B1 Improved process of preparation of linear aldehydes |
| 01/22/2003 | EP0937085B1 Magnesium (-)hydroxycitrate, method of preparation, applications, and compositions in particular pharmaceutical containing same |
| 01/22/2003 | CN1392133A Process for preparing bromodifluoacetic acid compounds |
| 01/22/2003 | CN1392132A Process for preparing carboxylic acid |
| 01/22/2003 | CN1391998A Improved sulfur-containing slag treatment system |
| 01/22/2003 | CN1391984A 混合金属氧化物催化剂 Mixed metal oxide catalysts |
| 01/21/2003 | US6509508 Molybdenum-bismuth-tungsten-iron oxide containing complex oxidation catalyst is useful for vapor phase oxidation of atleast compound selected from propylene, isobutylene, t-butanol and methyl-t-butyl ether with oxygen |
| 01/21/2003 | US6509498 Process for the preparation of sorbic acid or salts thereof |
| 01/21/2003 | US6509496 Process for making mineral, food or pharmaceutical grade salt products |
| 01/21/2003 | US6509495 Reacting halocompound comprising halogen heavier than fluorine and electron withdrawing group with hydrogen; catalysis |
| 01/21/2003 | US6509486 Process for the synthesis of 2-carboxyanthraquinone by oxidation of 2-ethylanthraquinone with nitric acid |
| 01/21/2003 | US6509293 Solid supported catalyst used in the present vapor phase carbonylation process includes a catalytically effective amount of gold associated with a solid support, material, and is further in the presence of a halide promoter |
| 01/21/2003 | US6509179 Preparing lactic acid from an aqueous feed which has been obtained by fermentation and mainly contains lactate |
| 01/16/2003 | WO2003005010A2 Method for producing optically active cyanohydrins |
| 01/16/2003 | WO2003004449A1 Improvement to methods for the continuous production of acetic acid and/or methyl acetate |
| 01/16/2003 | WO2003004447A2 Method for producing saturated alcohols, ketones, aldehydes and carboxylic acids |
| 01/16/2003 | WO2003004126A2 Azeotropic distillation of cyclic esters of hydroxy organic acids |
| 01/16/2003 | US20030013911 Production method of 2-cyclohexyl- 2-hydroxy-2-phenylacetic acid intermediate therefor and production method thereof |
| 01/16/2003 | US20030013904 A doped mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated acid |
| 01/16/2003 | US20030013603 Catalyst for oxidation, carbonylation, nitration, sulfonation |
| 01/16/2003 | CA2452341A1 Process for preparing saturated alcohols, ketones, aldehydes and carboxylic acids |
| 01/16/2003 | CA2452258A1 Improvement to methods for the continuous production of acetic acid and/or methyl acetate |
| 01/16/2003 | CA2440918A1 Azeotropic distillation of cyclic esters of hydroxy organic acids |
| 01/15/2003 | EP1275634A1 Method for purifying crude 2,6-Naphthalenedicarboxylic acid |
| 01/15/2003 | EP1275633A2 Method for decomposition of Michael type adduct |
| 01/15/2003 | EP1275631A2 Fluorination with aminosulfur trifluorides |
| 01/15/2003 | EP1274667A1 Method for preparing a hydrofluoroalkane and catalyst |
| 01/15/2003 | CN1391553A Novel intermediate for sweetener with high sweetness and process for producing the same |
| 01/15/2003 | CN1391551A Production of O-chloromethyl benzenecarbonyl chlorides |
| 01/15/2003 | CN1391549A Process for the preparation of diol mixtures |
| 01/15/2003 | CN1390826A Process for depolymerizing waste polyester |
| 01/15/2003 | CN1390825A Process for preparing cis-halochrysanthemic acid |
| 01/15/2003 | CN1390824A Process for preparing butane-tetracarboxylic acid |
| 01/15/2003 | CN1390823A Process and oxidizing reactor for preparing arylcarboxylic acid by aralkyl oxidization |
| 01/15/2003 | CN1390687A Anticorrosion table top |
| 01/15/2003 | CN1390642A Mixed metal oxide catalyst and preparation thereof |
| 01/15/2003 | CN1390641A High temperature mixture |
| 01/15/2003 | CN1390633A Preparation of chemical composition tank |
| 01/15/2003 | CN1098834C Process for preparing substituted benzoic acid |
| 01/15/2003 | CN1098727C 改进的反应器系统 Improved reactor system |
| 01/14/2003 | US6506944 Self metathesis or cross metathesis of specified olefin compounds in presence of homogenous catalyst comprising ruthenium compounds or ruthenium complexes |
| 01/14/2003 | US6506935 Contacting pretreated liquid feed stream with adsorbent comprising zeolite having specified silica to alumina molar ratio and cation exchanged with silver, mercury, copper, lead, thallium and/or palladium to adsorb residual iodine compound |
| 01/14/2003 | US6506933 Feeding gaseous mixture comprising alkyl alcohols, ethers and/or esters and carbon monoxide to carbonylation zone containing catalyst comprising gold associated with solid support material, recovering acid and/or ester product |
| 01/14/2003 | US6506932 Liquid phase catalytic oxidation |
| 01/14/2003 | US6506931 Liquid phase oxidation of alkylaromatic compound with molecular oxygen in reaction solvent comprising lower aliphatic carboxylic acid in presence of oxidation catalyst contained in hydrogen gas-treated liquid |
| 01/14/2003 | US6506908 From bicyclo(3.1.0)hexabe; decyclization; decarboxylation |
| 01/09/2003 | WO2003002504A1 Process for the preparation of 1.1-cyclohexanediacetic acid |
| 01/09/2003 | WO2003002501A1 Process for preparation of fluorine-containing carbonyl compounds |
| 01/09/2003 | WO2003002498A1 Intermediate halophenyl derivatives and their use in a process for preparing azole derivatives |
| 01/09/2003 | WO2003002493A1 Method for producing methacrylic acid from isobutane |
| 01/09/2003 | WO2003002492A1 Method for producing methacrolein from isobutane |
| 01/09/2003 | US20030009057 Utilization of an extracting agent as antifoaming agent in the production of anhydrous formic acid |
| 01/09/2003 | US20030008770 Encapsulated oxo-bridged organometallic cluster catalyst and a process for the preparation thereof |
| 01/09/2003 | US20030006195 Divalent and trivalent metal salts are added to solution containing fluorine compound and polymer containing fluorine to precipitate layered double hydroxide containing fluorine compound between layers |
| 01/09/2003 | US20030006026 Reactor filled with solid particle and gas-phase catalytic oxidation with the reactor |
| 01/08/2003 | EP1273565A1 Process for the preparation of (meth)acrylic anhydride |
| 01/08/2003 | EP1273343A1 Method of separating imide compound |
| 01/08/2003 | EP1273330A1 Sublimation purifying method and apparatus |
| 01/08/2003 | EP1272466A1 Method for the preparation of (s)-2-acetylthio-3-phenylpropionic acid |
| 01/08/2003 | EP1272453A1 Method for the purification of a crude acrylic acid melt |
| 01/08/2003 | EP1272452A2 Process for the preparation of (r)-2-bromo-3-phenyl-propionic acid |
| 01/08/2003 | EP1272451A2 Process and catalyst for dehydrogenating primary alcohols to make carboxylic acid salts |
| 01/08/2003 | EP1242521A4 Recovery of modifier compounds and polar organic compounds from a poly(arylene sulfide) recycle mixture |
| 01/08/2003 | EP1071687A4 Stable concentrated rare earth carboxylate liquids |
| 01/08/2003 | EP0894784B1 4-fluorosalicylic acid derivatives and process for producing the same |
| 01/08/2003 | CN1390190A Method for purifying acrylic acid obtained by oxidation of propylene and/or acrolein |
| 01/08/2003 | CN1389457A Preparation of alum antimonate catalyst using tin dioxide hydrate |
| 01/08/2003 | CN1389449A Electron-level ammonium citrate and its production process |
| 01/08/2003 | CN1389448A Method for preventing easy-to-polymerize material from polymerization and preparation method of (methyl) acrylic acid and acrylate |
| 01/08/2003 | CN1389406A Poly-metal deoxide material, its preparation method and use |
| 01/08/2003 | CN1098246C Complexing extraction process of purifying glyoxalic acid |
| 01/08/2003 | CN1098245C Method of scaling in phthalic acid oxidizing and drying machine |
| 01/08/2003 | CN1098124C Oxidation catalyst system and process for oxidation with the same |
| 01/07/2003 | US6504056 Transport and/or storage of acrylic acid |
| 01/07/2003 | US6504055 Catalysts and processes for the conversion of succinates to citraconates or itaconates |
| 01/07/2003 | US6504053 Promoted multi-metal oxide catalyst |
| 01/07/2003 | US6504051 Liquid-phase oxidation of an alkyl aromatic compound with an oxygen-containing gas in the presence of oxidation catalyst which results in reduced wastewater generation, reduced condensing capacity requirements |
| 01/07/2003 | CA2124784C Pentanoic acid derivatives |
| 01/07/2003 | CA2082534C Removal of halide impurities from organic liquids |
| 01/07/2003 | CA2079763C Process for the preparation of adipic acid by hydrocarboxylating pentenic acids |
| 01/07/2003 | CA2060052C Removal of carbonyl impurities from a carbonylation process stream |
| 01/03/2003 | WO2003000658A1 PROCESS FOR THE PREPARATION OF A HIGHLY PURE PHARMACEUTICAL INTERMEDIATE, 4-(CYCLOPROPYLCARBONYL)-α,α-DIMETHYLPHENYLACETIC ACID |
| 01/03/2003 | WO2003000640A1 Vapor-phase carbonylation of lower aliphatic alcohols using tin promoted iridium catalyst |
| 01/03/2003 | WO2003000639A1 Vapor-phase carbonylation of lower alkyl alcohols using tungsten promoted group viii catalyst |
| 01/03/2003 | WO2003000637A1 PROCESS FOR PREPARATION OF α,α-BIS(HYDROXYMETHYL)- CARBOXYLIC ACIDS |
| 01/03/2003 | WO2003000636A1 Resolution process for (r)-(-)-2-hydroxy-2-(2-chlorophenyl) acetic acid |
| 01/03/2003 | WO2003000409A1 Tin promoted iridium catalyst for carbonylation of lower alkyl alcohols |
| 01/03/2003 | WO2003000408A1 Tungsten promoted catalyst for carbonylation of lower alkyl alcohols |
| 01/02/2003 | US20030004379 Hydrothermally synthesized MO-V-M-X oxide catalysts for the selective oxidation of hydrocarbons |
| 01/02/2003 | US20030004375 Stripping acidulated slurry comprising lactic acid, calcium lactate, and calcium sulfate |
| 01/02/2003 | US20030004374 Vapor phase catalytic oxidation of methacrolein with oxygen in presence of solid oxidation catalyst using fixed bed tube type reactor |