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)
10/2008
10/22/2008CN101289379A Process for preparing bromoundecanoic acid by tower type addition of undecylenic acid
10/22/2008CN100427452C Method of preparing 1,1-cyclohexanepentanedioic acid by catalyst-free hydrolyzing alpha,alpha'-dicyano-1,1-1,1-cyclohexanediacetylimide ammonium salt in near-critical water medium
10/22/2008CN100427451C Process for producing (meth)acrylic acid or (meth)acrylic ester
10/22/2008CN100427450C Method of synthesizing glutaric acid by environment friendly phase transfer catalyst catalyzing and oxidizing cyclopentene
10/22/2008CN100427449C Purification method for acetic acid synthesized by low pressure methanol carbonylation
10/22/2008CN100427448C Method of vapor phase catalytic oxidation using multitubular reactor
10/22/2008CN100427185C Method for recovering organic acid from organic solvent
10/21/2008US7439392 Separation of citric acid from gluconic acid in fermentation broth using a weakly or strongly basic anionic exchange resin adsorbent
10/21/2008US7439391 Multi-stage glycolic acid crystallization
10/21/2008US7439390 Reacting aldehyde with amide, carbon monoxide and hydrogen in amidocarbonylation reaction to give N-acyl amino acid in presence of cobalt carbonyl catalyst, precipitating Co(N-acyl-amino acid)2 by feeding oxygen into mixture, separating Co(N-acyl-amino acid)2, hydrolyzing residue to obtain amino acid
10/21/2008US7439389 Particularly suitable for fixed bed gas phase partial oxidation, carried out in tube bundle reactor in one stage, of propene to acrolein and/or acrylic acid, and for first and second stage of heterogeneously catalyzed fixed bed gas phase partial oxidation, carried out in tube bundle reactor in two stages
10/21/2008US7439388 Reacting amidoalcohol with oxidizing agent in presence of hindered nitroxide radical, solvent, and optional co-catalyst, where solvent is solely water and where, prior to completion of reaction, composition separates into layers comprising water layer and solid organic layer into which amidoalcohol stays
10/21/2008US7439377 Crystallization; desolventizing
10/21/2008US7438871 Temperatures at the hot spots are effectively controlled and runaway may be avoided, and in which a structure of a heat exchanging system corresponding to divided spaces within a shell is simplified
10/21/2008CA2529709C A process for energy recovery in processes for the preparation of aromatic carboxylic acids
10/16/2008WO2008123975A1 Mixed metal oxide catalysts and catalytic conversions of lower alkane hydrocarbons
10/16/2008WO2008123974A1 Improved mixed metal oxide catalysts and process for (amm) oxidation of lower alkane hydrocarbons
10/16/2008WO2008123925A2 Biodiesel process
10/16/2008WO2008122537A1 Method for feeding a longitudinal section of a contact pipe
10/16/2008US20080255374 Process for charging a longitudinal section of a catalyst tube
10/16/2008US20080253943 Method for vapor phase catalytic oxidation
10/15/2008EP1979305A1 Process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of an organic starting compound
10/15/2008EP1979304A1 Process for the production of acetic acid
10/15/2008EP1979303A1 Process for the production of acetic acid
10/15/2008EP1979302A1 Process for the production of acetic acid
10/15/2008EP1871522B1 Process for preparing improved catalysts for selective oxidation of propane into acrylic acid
10/15/2008EP1699748B1 Method for the production of substituted 2-(phenoxymethyl)-benzoic acids
10/15/2008EP1635942B1 Apparatus for and method of producing aromatic carboxylic acids
10/15/2008EP1436300B1 Method for producing, via organometallic compounds, organic intermediate products
10/15/2008EP1206481B1 Birch bark processing and the isolation of natural products from birch bark
10/15/2008CN101287697A Stabilization of monomer emulsions against premature polymerization
10/15/2008CN101287696A A process to enrich a carboxylic acid composition
10/15/2008CN101287695A Method for producing 5-halo-2,4,6-trifluoroisophthalic acid
10/15/2008CN101287694A Process for preparing acrolein/acrylic acid or a mixture thereof from propane
10/15/2008CN101284778A Synthetic method of 2, 6-dimethoxy benzoic acid
10/15/2008CN101284777A Process for preparing terephthalic acid and ethane diacid by degrading waste polyethylene glycol terephthalate plastic
10/15/2008CN101284776A Method for preparing dimecrotic acid and magnesium salt thereof
10/15/2008CN101284775A Process for reclaiming 2-keto-L-gulonate by salting out method
10/15/2008CN101284774A Process for preparing glyceric acid by one-step of direct catalytic oxidation with oxygen
10/15/2008CN101284772A Synthetic method of D-(+)-2-chloro-propanoyl chloride
10/15/2008CN101284771A Exhaust steam trap and method of use thereof
10/15/2008CN100425589C Method for producing methacrylic acid
10/15/2008CN100425588C Novel flow chart for preparing acetic acid, methanol and dimethyl ether from methane by non synthetic gas process
10/15/2008CN100425587C Method for azeotropic distillation
10/15/2008CN100425345C Hydrogenation catalyst, preparation thereof and hydrogenation processes using this catalyst
10/15/2008CN100425341C Catalyst for catalytic gas phase oxidation of acrolein and process for producing acrylic acid by catalytic gas phase oxidation using said catalyst
10/15/2008CN100425334C Pilot test method for multitubular reactor
10/14/2008US7435849 Process for the production of acid chlorides
10/14/2008CA2346142C Process for preparing 1,5-diaryl-3-substituted pyrazoles
10/14/2008CA2333888C Production of optically active phospholanes
10/09/2008WO2008120956A1 Method for preparing unsaturated aldehyde and/or unsaturated fatty acid using fixed-bed catalytic partial oxidation reactor
10/09/2008WO2008120289A1 Method of supplying terephthalic acid slurry
10/09/2008WO2008120091A2 Improved manufacturing process for aromatic carboxylic acids
10/09/2008WO2008095629A8 Carbon-supported gold catalyst, processes for its production and use for oxidation of organic compounds
10/09/2008US20080245995 Improved Process for the Production of Derivatives of Saturated Carboxylic Acids
10/09/2008US20080245652 Method for purifying (meth)acrylic acid
10/08/2008EP1413572B1 Process for producing acid anhydride
10/08/2008CN101279912A Preparation of 2,2-dimethylolbutyric acid
10/08/2008CN101279911A Method for preparing glyceric acid directly by dioxygen catalytic oxidation of glycerol
10/08/2008CN101279910A Preparation of acrylic acid
10/08/2008CN101279909A Refinement and purification method of nonane diacid
10/08/2008CN101279908A Preparation of 3,3-dimethyl butyryl chloride
10/08/2008CN101279907A Preparation of trimeric palladium acetate
10/08/2008CN101279906A Method for producing acetic acid by liquid phase catalytic degradation of waste polypropylene plastic
10/08/2008CN101279905A Preparation of ethynyl benzoic acid
10/08/2008CN101279904A Improved method for preparing aromatic carboxyl acid
10/08/2008CN101279294A Rhodium catalyst for acetic oxide carbonyl synthesis from methyl acetate and preparation thereof
10/08/2008CN100424066C Process of preparing malonic ester
10/08/2008CN100424065C Process for production of (meth)acrylic compounds
10/08/2008CN100424064C Process for producing (meth)acrylic acid or (meth)acrolein
10/08/2008CN100424063C Method of manufacturing lase-of-polymerization substance
10/08/2008CN100424062C Process for preparing hydroaromatic polybasic carboxylic acid and process for preparing hydroaromatic polybasic carboxylic anhydride
10/08/2008CN100424058C Process for producing unsaturated aldehyde and unsaturated carboxylic acid
10/08/2008CN100423836C Process for producing metal oxide catalyst
10/08/2008CN100423834C Composite oxide catalyst and method for production thereof
10/07/2008US7432404 Process for removal of acrolein from acrylonitrile product streams
10/07/2008US7432395 For removing catalyst from a carboxylic acids; isomers of carboxybenzaldehyde, toluic acid, phthalic acid, benzene-tricarboxylic acid, dicarboxybiphenyl , phthalic acid, hydroxybenzoic acid, benzoic acid
10/07/2008CA2190030C Method for preparing 3-carboxy-4-hydroxybenzaldehydes and derivatives thereof
10/02/2008WO2008118457A2 Synthesis of resolvins and intermediates, compounds prepared thereby, and uses thereof
10/02/2008WO2008117054A2 Chiral diphosphines, methods for their preparation, transition metal complexes comprising them and use in chiral synthesis
10/02/2008WO2008116810A1 Method for the recovery of maleic anhydride by distillation
10/02/2008WO2008116799A1 Method for producing formic acid
10/02/2008WO2008116777A1 Method for transporting a liquid monomer phase, removed from a storage container, in the tank of a tanker lorry or tanker ship
10/02/2008WO2008116776A1 Method for storing a monomer phase that is liquid under storage conditions
10/02/2008WO2008070756A3 Processes for the production of fatty acid alkyl esters
10/02/2008US20080242889 Method for the production of pyruvic acid
10/02/2008US20080242887 Carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures; oxidizing p-xylene to form terephthalic acid that can be purified more easily that if higher temperatures were required.
10/02/2008US20080242876 Enantioselective hydrogenation of compounds such as (Z)-[-(3-;Benzyloxy-4-methoxyphenyl)]-2-ethoxyacrylic acid in presence of catalyst comprising a catalyst ligand having a metallocene group with a chiral phosphorus or arsenic substituent to provide substituted propionic acids
10/02/2008US20080242816 Continuous neutralization process in which at least one ethylenically unsaturated carboxylic acid is neutralized at least partly with a base and the temperature of the neutralized solution is less than 70 degrees C.; occurrence of undesirably high temperature peaks is avoided
10/02/2008US20080242815 Oxide catalyst, process for producing acrolein or acrylic acid and process for producing water absorbent resin
10/02/2008DE102007015035A1 Substituierte Dibenzoesäure-Derivate und ihre Verwendung Substituted dibenzoic acid derivatives and their use
10/02/2008DE102007014914A1 Katalytisch hochwirksame Edelmetall-Carboxylat-Verbindungen von Ir, Ru, Rh, Pd, Pt und Au Highly catalytically active noble metal-carboxylate compounds of Ir, Ru, Rh, Pd, Pt and Au
10/02/2008CA2682335A1 Chiral phosphorus compounds
10/02/2008CA2681508A1 Process for preparing formic acid
10/01/2008EP1973865A1 Production of sodium diformate
10/01/2008EP1973864A1 Preparation of compounds having a perfluoroalkylcarbonyl group
10/01/2008EP1973641A1 Process for heterogeneously catalysed gas phase partial oxidation of at least one organic starting compound
10/01/2008EP1663934A4 Alpha-hydroxy-benzeneacetic acid derivatives, and compounds having two 5-membered lactone rings fused to central cyclohexa-1,4-diene nucleus based upon the same, and uses of the compounds
10/01/2008CN101277921A Carrier for separation, method for separation of compound, and method for synthesis of peptide using the carrier
10/01/2008CN101277920A Process for producing glycolic acid
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