Patents
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
03/1996
03/13/1996CN1118344A Processes for producing tetrafluorophthalic anhydride and fluorobenzoic acids
03/13/1996CN1031285C Process for preparing high-concentration mixtures of polyunsaturated fatty acids and their esters from oils of animal and/or vegetable origin
03/13/1996CN1031260C Process for preparing carboxylic acids
03/12/1996US5498824 Olefin complexing reagents
03/12/1996US5498799 Process for producing optically active 2-norbornanone
03/12/1996US5498750 Process for the preparation of 1-fluoro-cyclopropane-1-carboxylic acid
03/12/1996US5498585 Selective hydrogenation
03/09/1996CA2157632A1 Catalytic gas-phase oxidation of acrolein to acrylic acid
03/08/1996CA2157238A1 Reactions catalyzed by haloporphyrins
03/07/1996WO1996006821A1 Neurotrophic and antiproliferative compounds
03/07/1996DE4428480A1 New 4-isopropyl-3-(methyl-sulphonyl)-benzoate ester cpds.
03/07/1996CA2198728A1 Neurotrophic and antiproliferative compounds
03/06/1996EP0699177A1 A process for the preparation of gemfibrozil
03/06/1996EP0591176B1 Method for the preparation of an aluminium triformate solution containing alkali metals and/or alkaline-earth metals, highly concentrated aluminium triformate solutions containing alkali metals and/or alkaline-earth metals, and the use of such solutions
03/06/1996CN1117975A Organometallic fluorenyl compounds, preparation, and use
03/05/1996US5496787 Process for producing a vanadium-phosphorus oxide catalyst precursor
03/05/1996CA1338121C Anticonvulsant and neuroprotective 2-aminoacetamide derivatives
02/1996
02/29/1996WO1996006099A1 1,2-disubstituted aromatic chelates
02/29/1996WO1996006065A1 Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
02/29/1996WO1996005741A1 Hydroxycitric acid concentrate and method of making
02/28/1996EP0698007A1 Improved basic calcium carboxylates
02/28/1996EP0632747B1 Shell catalyst, process for producing the same and its use
02/28/1996CN1117714A Separation process
02/28/1996CN1117485A Method for separation and extraction of knopper-gall tannin from the solution of same
02/27/1996US5495045 Reacting alkoxyalkanol with stable free radical nitroxide in presence of cerium salt, nitrite compound, polar solvent, oxidant and water
02/27/1996US5495034 Method for preparing α-substituted ω-hydroperfluoroalkanes
02/27/1996US5494994 Salts of pyromellitic acid, a process for their preparation and their use
02/22/1996WO1996005191A1 Natriuretic cyclic compounds
02/22/1996WO1996005165A1 Retinoic acid x-receptor ligands
02/22/1996WO1996005163A1 Method of manufacturing acetic acid
02/22/1996WO1996005162A1 Method of manufacturing lower aliphatic monocarboxylic acids
02/22/1996WO1996005140A1 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds
02/22/1996DE4428977A1 Processing by-prod. stream from direct oxidn. of cyclohexane to adipic acid
02/21/1996EP0696929A1 Method for the decomposition of trichloroacetic acid
02/21/1996CN1117290A Bicyclic carboxylic acid leukotriene B4 antagonists
02/21/1996CN1117270A Filtration process
02/21/1996CN1117091A Electrosynthesis of metal carboxylates
02/21/1996CN1117042A Improved, controlled temperature process for making2,2'-oxodisuccinates useful as laundry detergent builders
02/21/1996CN1117041A Process for producing a phosphours-vanadium oxide catalyst precursor, process for producing a phosphorus-vanadium oxide catalyst, and process for producing maleic anhydride by vapor phase oxidation...
02/21/1996CN1117040A Method and apparatus for recovering carboxylic acids from dilute solutions
02/21/1996CN1117039A Heteropolyacid-based catalysts and use thereof for the preparation of aliphatic carboxylic acids
02/21/1996CN1031050C Method for production of acrylic acid
02/20/1996US5493054 Process for the synthesis of acid halides and reactants useful for its implementation
02/20/1996US5493052 Catalytic vapor phase oxidation of acrolein to acrylic acid using mixed oxides of molybdenum, vanadium, tungsten, copper and nickel
02/20/1996US5493051 Lifibrol and its use
02/20/1996US5493048 Fluoro-trifluoromethylbenzoic acid derivatives
02/20/1996US5493037 Nickel catalyst
02/20/1996US5493033 Process for purifying tetrachlorophthalic anhydride
02/20/1996US5493025 Reacting polyfluoroacid chloride with an acid chloride in presence of tertiary amine; intermediate for 2-arylpyrimidine, an herbicide
02/20/1996US5492915 Substituted quinolyl compounds exhibiting selective leukotriene B4 antagonist activity
02/20/1996US5492877 Reacting fossil flour with an ammonia complex of nickel and copper; precipitation; filtration; drying; calcining; reduction with hydrogen
02/20/1996US5492830 Enzymatic resolution of α-tertiary carboxylic acid esters
02/20/1996US5492625 Method of recovering carboxylic acids from dilute solutions
02/20/1996US5492603 Apparatus for recovering acetic acid from aqueous streams
02/15/1996WO1996004289A1 High activity ruthenium or osmium metal carbene complexes for olefin metathesis reactions and synthesis thereof
02/15/1996DE4428567A1 Prepn. of lower aliphatic mono:carboxylic acids
02/14/1996EP0696566A1 Process for production of phenyllactic acid derivative
02/14/1996EP0696565A1 Method of purifying acetic acid
02/14/1996CN1116617A Process for producing acetic anhydride and acetic acid
02/13/1996US5491258 Molded catalyst or supported catalyst for synthesizing methacrolein and methacrylic acid, a process for production thereof, and a process of use thereof
02/13/1996US5491244 Acrylate ester
02/13/1996US5490936 Process for catalyst recovery
02/08/1996WO1996003365A1 Method of recycling a catalyst in a reaction involving the direct oxidation of cyclohexane into adipic acid
02/08/1996WO1996003356A1 Halogenation reactions
02/08/1996DE4427474A1 Adipic acid prepn. by oxidising cyclohexane with oxygen
02/08/1996CA2195576A1 Method of recycling a catalyst in a reaction involving the direct oxidation of cyclohexane into adipic acid
02/07/1996EP0695749A1 Process for the selective hydrogenation of activated, ethylenically unsaturated compounds
02/07/1996EP0695736A1 Purification of acrylic acid by areotropic distillation
02/07/1996EP0695735A1 Process for the preparation of trichloroacetyl chloride
02/07/1996EP0695286A1 Method of preparing caesium salts from caesium aluminium alum
02/07/1996EP0672029A4 SELECTIVE PRECIPITATION OF -g(a)-ARYL CARBOXYLIC ACID SALTS.
02/07/1996CN1116411A Catalytic decomposition process of nitrous oxide pure or contained in gaseous mixtures
02/07/1996CN1116197A Method for production of pyromellitic anhydride
02/07/1996CN1030909C Acetone removal process
02/06/1996US5489731 Preparation of aromatic vinyl compounds
02/06/1996US5489716 Partial oxidation of hydrocarbons to hydroxy-group containing compounds
02/06/1996US5489715 Process for preparing 4,5-difluorobenzaldehydes
02/06/1996CA2007730C Process for the recovery of catalyst values
02/03/1996CA2155155A1 Process for the preparation of trichloroacetyl chloride
02/01/1996WO1996002521A1 Resolution process using oxazolidinones
02/01/1996WO1996002488A1 Method of stabilizing polyunsaturated fatty acids and their application in therapy and cosmetics
02/01/1996WO1996002487A1 Process for carbonylating olefins
02/01/1996WO1996002486A1 Benzoyl derivatives and synthesis thereof
02/01/1996CA2200067A1 Method of stabilizing polyunsaturated fatty acids and their application in therapy and cosmetics
02/01/1996CA2194770A1 Benzoyl derivatives and synthesis thereof
01/1996
01/31/1996EP0694526A1 Process for preparation of fluorinated beta-keto ester
01/31/1996EP0694523A1 Preparation of difluoroacetic acid fluoride and difluoroacetic acid esters
01/31/1996EP0694522A2 Process for preparing arylacetic acid derivatives by carbonylation of arylmethylhalogenids
01/31/1996EP0694333A1 Catalyst for preparing carboxylic acids
01/31/1996EP0543937B1 Process for the purification of acetic anhydride and acetic acid
01/31/1996EP0441979B1 Optically active 2-(alkyl-substituted phenyl)-propionic acid derivative and optical resolution of ( )-1-methyl-3-phenylpropylamine
01/31/1996CN1115753A Process and apparatus for producing aromatic carboxylic acid
01/31/1996CN1115752A An improved purifiacation process for methacrylic acids
01/31/1996CN1115689A Gas-solid phase carbonylation catalyst and its prepn
01/31/1996CN1115688A Iminazoles-rhodium catalyst and its prepn
01/30/1996US5488174 Hydroformylation process
01/30/1996US5488156 Preparation of a heat-stable lactic acid
01/30/1996US5488154 Process for the preparation of alkoxyalkanoic acids
01/30/1996US5488153 Process for the carbonylation of methanol or a reactive derivative thereof
01/30/1996US5488152 Process for the preparation of 4-alkoxy-3,5,6-trifluoro-phthalic acids and 3-alkoxy-2,4,5-trifluorobenzoic acids