Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
12/2008
12/03/2008CN100439314C Non-steroid anti-inflammatory agent felbinac preparation method
12/03/2008CN100439312C Polycarboxylic acid mixture
12/02/2008US7459584 Process for the preparation of lactic acid and glyceric acid
12/02/2008US7459570 High-purity biphenyltetracarboxylic dianhydride and process for producing the same
12/02/2008CA2337032C Derivatives of 1-oxyl-4-hydroxy- or 4-amino-2,2,6,6-tetramethylpiperidine as polymerization inhibitors for (meth)acrylate monomers
12/02/2008CA2307989C An improved process for purifying alpha-keto acids
12/02/2008CA2304177C Recovery of 2,6-naphthalene dicarboxylic acid from polyesters
12/02/2008CA2245252C Halogenated aromatic derivatives and process for the production thereof
11/2008
11/27/2008WO2008144198A1 Preparative-scale separation of enantiomers of chiral carboxylic acids
11/27/2008WO2008144008A1 Method and apparatus for making acetic acid with improved light ends column productivity
11/27/2008WO2008143126A1 Evaporation apparatus, method of evaporation and process for producing methacrolein or (meth)acrylic acid
11/27/2008WO2008143052A1 Process for producing methacrylic acid
11/27/2008WO2008143015A1 Process for production of succinic acid, and process for production of ammonium succinate solution
11/27/2008WO2008142127A1 Process for converting levulinic acid into pentanoic acid
11/27/2008US20080293968 Regenerating a heteropoly acid catalyst using aqueous solution of ammonium and nitrate ions; gas phase oxidation of methacrolein, isobutylaldehyde, isobutane or isobutyric acid to methacrylic acid; sufficiently recover the catalytic activity of a deactivated catalyst and impart a good catalyst life
11/27/2008US20080293967 Control of formic acid impurities in industrial glacial acetic acid
11/27/2008US20080293966 Control of impurities in reaction product of rhodium-catalyzed methanol carbonylation
11/27/2008US20080293965 Process for the Dynamic Resolution of (Substituted) (R)- or (S)- Mandelic Acid
11/27/2008US20080293964 Process for Preparing High Purity Terephthalic Acid
11/27/2008CA2687203A1 Process for converting levulinic acid into pentanoic acid
11/27/2008CA2684139A1 Method and apparatus for making acetic acid with improved light ends column productivity
11/26/2008EP1995231A1 Process for preparation of methyl methacrylate using recycled methanol
11/26/2008EP1994978A1 Process for preparation of methyl methacrylate by esterification during oxidation
11/26/2008EP1993989A2 Polycarboxylic acid production system employing oxidative digestion with reduced or eliminated upstream liquor exchange
11/26/2008EP1993988A1 Polycarboxylic acid production system employing enhanced multistage oxidative digestion
11/26/2008EP1993987A2 Polycarboxycic acid production system employing hot liquor removal downstream of oxidative digestion
11/26/2008EP1993986A1 Process for the preparation of aromatic derivatives of 1-adamantane
11/26/2008EP1993727A2 Use of chemical reaction to separate ethylene from ethane in ethane-based processes to produce acetic acid
11/26/2008EP1871522B8 Process for preparing improved catalysts for selective oxidation of propane into acrylic acid
11/26/2008CN101312936A System and method for acetic acid dehydration
11/26/2008CN101312935A Method for safely carrying out gas phase partial oxidation
11/26/2008CN101311159A Process for preparation of methyl methacrylate by esterification during oxidation
11/26/2008CN101311158A Process for preparation of methyl methacrylate using recycled methanol
11/26/2008CN101311156A Method for preparing ferrous oxalate
11/26/2008CN101311155A Process for preparing chloro-pivalyl chloride
11/26/2008CN100436399C Method of preparing (S)-(-)-2-chloropropionate and (R)-(+)-2-chloro propionic acid
11/26/2008CN100436398C Oxidizing reaction device and method
11/26/2008CN100436397C Process for producing pyromellitic acid
11/26/2008CN100436396C New method for synthesizing p-isopropyl benzoic acid
11/26/2008CN100436395C Method for producing substituted arylcarboxylic acid chlorides
11/26/2008CN100436385C Process for production of iodine compounds and process for production of high-purity 5-iodo-2-methylbenzoic acid
11/26/2008CN100435941C Catalyst comprising a support and a catalytically active oxide material applied to the surface of the substrate
11/25/2008US7456306 Stearate composition and method of production thereof
11/25/2008US7456305 Catalytic esterification of animal/vegetable fats at high temperature under vacuum with alcohol
11/25/2008US7456218 3-(4-{[4'-(benzyloxy)-2',6'-dimethylbiphenyl-3-yl]methoxy}-2-fluorophenyl)propanoic acid; superior GPR40 receptor function modulating action, can be used as an insulin secretagogue, an agent for the prophylaxis or treatment of diabetes
11/25/2008US7456136 alkylphenol-formaldehyde-salicylic acid resins and overbased compounds of the resins, used in lubricants, oil or fuel additives, having oxidation resistance
11/20/2008WO2008139790A1 Process for production of ether carboxylates
11/20/2008WO2008138892A1 Process for the catalytic cleavage of vegetable oils.
11/20/2008US20080287707 Adsorption Of Volatile Organic Compounds Derived From Organic Matter
11/20/2008US20080287706 Method and apparatus for making acetic acid with improved light ends column productivity
11/20/2008US20080287698 Ferrocenyl Ligands For Homogeneous, Enantioselective Hydrogenation Catalysts
11/20/2008US20080287616 Process for Production of (Meth)Acrylic Acid with High Boiling Fraction Work-Up By Means of Crystallization
11/20/2008US20080287441 Alpha-(trifluoromethyl-substituted aryloxy, arylamino, arylthio or arylmethyl)-trifluoromethyl-substituted phenylacetic acids and derivatives as antidiabetic agents
11/20/2008US20080286186 Composite oxide catalyst and method of producing the same
11/20/2008DE102007023256A1 Purifying fluoroalkyl- and fluoroacyl-compound, comprises providing solution of e.g. fluoroalkyl compound, leading this solution over first stationary phase, forwarding eluate over second stationary phase, washing and flowing from phase
11/20/2008CA2684683A1 Process for the catalytic cleavage of vegetable oils
11/19/2008EP1992607A1 Method for producing 4-oxoquinoline compound
11/19/2008EP1991517A2 Method for preparing an organic amine-lactic acid complex
11/19/2008EP1397338B1 Vapor-phase carbonylation of lower alkyl alcohols using tungsten promoted group viii catalyst
11/19/2008CN101309889A Process for preparing acrolein or acrylic acid or a mixture thereof from propane
11/19/2008CN101306993A Refine process of L-lactic acid of polymerization grade
11/19/2008CN101306992A Process for preparating L-lactic acid by continuously acidizing, crystallizing from L-calcium lactate
11/19/2008CN101306990A Second-stage reaction process for preparing propenoic acid or ester from lactic acid or ester
11/19/2008CN101306989A Process for separating acetic acid from water by salt-containing extracting, rectifying and separating
11/19/2008CN101306981A Azeotropy process for catalyzing, rectifying and hydrolyzing methyl acetate
11/19/2008CN101306971A Preparation of at least one partial oxidation and/or ammoxidation product of a hydrocarbon
11/19/2008CN101306362A Catalyst for producing alpha, beta-unsaturated carboxylic acid and method for preparation thereof, and method for producing alpha, beta-unsaturated carboxylic acid
11/19/2008CN100434413C Method for separating and purifying mandelic acid using wealk alkali anion exchange agent
11/19/2008CN100434171C Process for preparing vanadyl pyrophosphate catalyst
11/19/2008CN100434156C Maintenance method for multi-tubular reactor
11/18/2008US7452999 Chemical process for the preparation of intermediates to obtain N-formyl hydroxy-lamine compounds
11/18/2008US7452522 Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid
11/18/2008CA2409933C Process for the selective preparation of acetic acid by catalytic oxidation of ethane and/or ethylene
11/18/2008CA2381420C Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile
11/18/2008CA2331701C Process for selective oxidation of primary alcohols
11/13/2008WO2008137491A1 Process and catalyst for oxidizing aromatic compounds
11/13/2008WO2008136900A1 Use of bipolar trans carotenoids as a pretreatment and in the treatment of peripheral vascular disease
11/13/2008WO2008136857A1 Process for the production of non-aromatic carboxylic acids
11/13/2008WO2008135676A1 Improved method for producing acrolein and/or acrylic acid from propylene
11/13/2008WO2008135482A2 Ionic liquids comprising polyethercarboxylates as anions, production and use thereof
11/13/2008WO2008117054A3 Chiral diphosphines, methods for their preparation, transition metal complexes comprising them and use in chiral synthesis
11/13/2008US20080281125 Process for Preparing Enantiopure E-(2S)-Alkyl-5-Halopent-4-Enoic Acids and Esters
11/13/2008US20080281124 Method For Purifying (Meth)Acrylic Acid Obtained By Oxidizing a Gaseous Substrate
11/13/2008US20080281114 Novel Method for Preparing Unsaturated Fatty Hydroxyacids
11/13/2008CA2685468A1 Process and catalyst for oxidizing aromatic compounds
11/12/2008EP1989167A1 Methods and apparatus for producing a low-moisture carboxylic acid wet cake
11/12/2008EP1989166A1 Versatile oxidation byproduct purge process
11/12/2008EP1989165A1 Carboxylic acid production process
11/12/2008EP1989164A2 Polycarboxylic acid production system employing cooled mother liquor from oxidative digestion as feed to impurity purge system
11/12/2008EP1989163A1 Polycarboxylic acid production system with enhanced residence time distribution for oxidative digestion
11/12/2008EP1989161A2 Integrated process for the production of acetic acid and vinyl acetate
11/12/2008EP1988999A2 Multiple-metal complex-containing compound and metal complex, and manufacture methods therefor, and exhaust gas purification catalyst manufacture method using the same
11/12/2008EP1988989A1 Oxidation system with sidedraw secondary reactor
11/12/2008CN101302152A Method for recovering terephthalic acid from coloured terephthalic acid residue by complexation-crystallization
11/12/2008CN101302151A Preparation of isopimaric acid
11/12/2008CN101302150A Synthetic method of 2-(2,4- dichlorophenoxy) propionic acid
11/12/2008CN101302149A Synthetic method of 4-methoxyl phenoxyl alkylphenate
11/12/2008CN101302148A Method for producing aminic acid by glycerin water thermal reduction of CO2
11/12/2008CN101302147A Method for preparing hexane diacid by liquid-phase catalytic oxidation of cyclohexanol
11/12/2008CN100432038C Method for producing nitrile compound, carboxylic acid compound or carboxylate compound
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