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)
03/1998
03/24/1998US5731486 Process for preparing 3-methyl-2-pentene
03/24/1998US5731473 Hydroformylation, carbon dioxide
03/24/1998US5731469 Process for the preparation of 3-chloropropionic acid
03/24/1998US5731467 Oxidative degradation of 5-ketogluconic acid in alkaline medium
03/24/1998US5731466 Method for preparing alkylbenzoic acid
03/24/1998US5731460 Hydrogen peroxide
03/24/1998US5731448 (+) and (-)-8-chloro-6-sulfonyloxy-octanoic acid, its derivatives, and methods for making
03/24/1998US5731443 Liquid phthalic anhydride recovery process using a rectification tower
03/24/1998US5731252 Ion exchanging
03/24/1998US5730844 Liquid phthalic anhydride recovery process using a rectification tower with benzoic acid control
03/24/1998CA2215007A1 Process for synthesizing benzoic acids
03/19/1998WO1998011048A1 Improved method for purifying acrylic acid
03/19/1998WO1998011047A1 Method for purifying crude naphthalenedicarboxylic acid and process for preparing polyethylene naphthalate
03/19/1998WO1998011045A1 Production of 6-bromo-2-methoxynaphthalene and derivatives
03/19/1998WO1998011041A1 Production of 6-bromo-2-naphthol and derivatives
03/19/1998CA2266128A1 Improved method for purifying acrylic acid
03/19/1998CA2264884A1 Production of 6-bromo-2-methoxynaphthalene and derivatives
03/19/1998CA2264699A1 Production of 6-bromo-2-naphthol and derivatives
03/19/1998CA2264525A1 Method for purifying crude naphthalenedicarboxylic acid and process for preparing polyethylene naphthalate
03/18/1998EP0828707A1 Process for producing cyclohexanonoxim and caprolactam
03/18/1998EP0828702A1 Process for resolving chiral acids with 1-aminoindan-2-ols
03/18/1998EP0828701A1 Improved oxidation process
03/18/1998EP0828699A1 Separation of alpha-arylpropionic acid ester diastereomers by distillation
03/17/1998US5728917 Polymer depolymerization using ruthenium and osmium carbene complexes
03/17/1998US5728893 Process using multistaged reactors
03/17/1998US5728872 Stabilized acrylic acid compositions
03/17/1998US5728871 Process for the preparation of acetic acid
03/17/1998US5728870 Hydrolyzing a dialkyl-2,6-naphthalenedicarboxylate with water and recovering 2,6-naphthalenedicarboxylic acid
03/17/1998US5728866 Process for the preparation of (+)-(1R) -cis-3-oxo-2-pentyl-1-cyclopentaneacetic acid
03/17/1998US5728865 Process for the preparation of octyl p-methoxy cinnamate
03/17/1998US5728366 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalent organic anions
03/17/1998US5728364 Two powder synthesis of hydrotalcite and hydrotalcite like compounds
03/17/1998US5728363 React trivalent metal oxide powder with divalent metal compound and react intermediate formed with anion source, separation
03/17/1998US5728360 Vanadyl pyrophosphate precursors
03/17/1998US5728272 Separation by rectification of unsaturated carboxylic acids from solvents
03/11/1998EP0827494A1 Compositions of enantiomeric diacyl tartaric anhydrides and preparation thereof
03/11/1998EP0827493A1 Preparation of aralkanoic acids and esters using mixed ligand catalyst
03/11/1998CN1175941A Organic compounds and processes for their manufacture
03/10/1998US5726327 Process for the production of petrochemicals
03/10/1998US5726321 Vinylation, ethynylation, carbonylation
03/05/1998WO1998008798A1 Process for separating by distillation pure (meth)acrylic acid from mixtures
03/05/1998WO1998008797A1 Naphthyl compounds, intermediates, compositions, and methods of use
03/05/1998WO1998008605A1 Catalyst recovery
03/05/1998DE19634614A1 Verfahren zur destillativen Abtrennung von Rein-(Meth)acrylsäure aus Gemischen, die im wesentlichen frei sind von Komponenten, deren Siedepunkt niedriger als der der (Meth)acrylsäure ist A process for distillative separation of pure (meth) acrylic acid from mixtures which are substantially free from components whose boiling point is lower than that of the (meth) acrylic acid
03/05/1998CA2263949A1 Process for separating by distillation pure (meth)acrylic acid from mixtures
03/04/1998EP0826679A2 Naphthyl compounds, intermediates, compositions, and method of use
03/04/1998EP0826672A1 Process for the preparation of azine-carboxylic acid chlorides
03/04/1998EP0664782B1 Enantiomeric resolution
03/04/1998CN1175241A Carbonylation of olefins
03/04/1998CN1174834A Process for preparation of acid chloride compounds
03/04/1998CN1174828A Process for separating oxidation reaction product and oxidation catalyst
03/04/1998CN1037601C Preparation of gallic acid by basic hydrolyzation
03/04/1998CN1037585C Gas-solid phase carbonylation catalyst and its prepn.
03/04/1998CN1037584C Iminazoles-rhodium catalyst and its prepn. and use
03/03/1998US5723677 Method for hydroperoxide decomposition using novel porphyrins synthesized from dipyrromethanes and aldehydes
03/03/1998US5723662 Process for preparing a particularly pure glycolic acid
03/03/1998US5723661 Process for preparing calcium pyruvate and its hydrates
03/03/1998US5723660 Process for producing acetic acid
03/03/1998US5723659 Catalytic hydrogenation after catalytic oxidation of alkylaromatic compounds
03/03/1998US5723658 Process for the preparation of salts of substituted or unsubstituted phthalic acids
03/03/1998US5723656 Process for preparing aromatic carboxylic acids with efficient energy recovery
03/03/1998US5723613 Process for the free-radical chlorination or bromination of methyl aromatic compounds
03/03/1998US5723098 Removal of iron ions from reaction solutions formed during nitric acid oxidation of cyclohexanol to adipic acid in the presence of copper and/or vanadium salts
02/1998
02/26/1998WO1998007680A1 Process for preparation of branched fatty acids
02/26/1998WO1998007679A1 Process for the preparation of derivatives of fatty acids
02/26/1998WO1998007678A1 Process for extracting dicarboxylic acids from aqueous solutions
02/26/1998WO1998007677A1 Methods and devices for controlling the reaction by adjusting the oxidant consumption rate
02/26/1998WO1998007671A1 Separating enantiomers by molecular imprinting
02/26/1998DE19633532A1 Verfahren zur Extraktion von Dicarbonsäuren aus wäßrigen Lösungen A process for the extraction of dicarboxylic acids from aqueous solutions
02/26/1998CA2263605A1 Methods and devices for controlling the reaction by adjusting the oxidant consumption rate
02/25/1998EP0825173A1 Method for preparing aromatic compounds
02/25/1998EP0825171A2 Process for the isolation of hydroxypivalic acid from aqueous solution
02/25/1998EP0825170A2 Process for preparing hydroxypivalic acid
02/25/1998EP0825165A2 A process for separating an oxidation reaction product and an oxidation catalyst
02/25/1998EP0824962A1 Oxidation catalyst system and process for oxidation with the same
02/25/1998EP0824653A1 Effluent gas treatment
02/25/1998EP0824511A1 Method for manufacture of products containing disalts of formic acid
02/25/1998CN1037508C Preparation method of cobalt acetate
02/24/1998US5721280 Heating with alkali metal hydroxide in dipolar aprotic solvent to recover tetracarboxylic acid and diamine
02/24/1998CA2029496C Removal of metal soaps from hydrogenated fatty products
02/23/1998CA2213584A1 Process for the preparation of acid chloride compounds
02/22/1998CA2212958A1 Method for preparing aromatic compounds
02/19/1998WO1998006688A1 Catalysed coupling of aryl magnesium halogenides and bromaryl carboxylic acid compounds for preparing biphenyl carboxylic acids
02/19/1998WO1997048849A3 Method of preparing an alkaline earth metal tallate
02/19/1998DE19633168A1 Production of cyclopropane-1,1-di:carboxylic acid derivatives
02/18/1998EP0689529B1 Process for the carbonylation of acetylenically unsaturated compounds
02/18/1998CN1173396A Novel metal ion-exchanged phosphorus-vanadium compound and solid acid catalyst using compound
02/18/1998CN1037434C Method for purification of sorbic acid
02/17/1998US5719318 Catalytic vapor phase oxidation of acrolein
02/17/1998US5719312 Process for the preparation of 5-formylvaleric acid and 5-formylvalerate ester
02/17/1998US5719308 Enzymatic process for the preparation of optically active tetralin derivatives
02/17/1998US5718808 From vapor phase oxidation product
02/12/1998WO1998005623A1 A process for the preparation of 2-aryl-propionic and 2-aryl-acetic acids starting from aryl-olefins
02/12/1998WO1998005622A2 Process for the separation of acrylic acid
02/12/1998WO1998005621A1 Recovery of highly fluorinated carboxylic acids from the gaseous phase
02/12/1998WO1998005620A1 Integrated process for the production of vinyl acetate and/or acetic acid
02/12/1998WO1998005619A1 Selective preparation process of acetic acid and catalysts therefor
02/12/1998WO1998005416A1 Mixing device for liquids
02/12/1998WO1998005398A1 Device for phase separation
02/12/1998DE19631662A1 Vorrichtung zur Phasentrennung A device for phase separation,
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