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)
07/1998
07/07/1998US5777142 Unsaturated hydroxycarboxylic compounds useful as intermediates for preparing lubricant and fuel additives
07/07/1998US5777141 Chromatography
07/07/1998US5776424 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalen inorganic anions
07/02/1998WO1998028252A1 Functionalized oligomer mixtures derived from cyclopentene
07/02/1998WO1998028074A1 Novel supported catalysts
07/02/1998WO1998015519A3 A process for the recovery of lactic acid esters and amides from aqueous solutions of lactic acid and/or salts thereof
07/02/1998DE19757627A1 Azulenderivate, Verfahren zu deren Herstellung und pharmazeutische Zusammensetzung, die diese Verbindungen enthält Azulene derivatives, processes for their preparation and pharmaceutical composition containing these compounds
07/02/1998CA2275472A1 Functionalized oligomer mixtures derived from cyclopentene
07/01/1998EP0851285A1 Photothermographic recording material coatable from an aqueous medium
07/01/1998EP0850925A1 Process for preparation of 13-cis-retinoic acid
07/01/1998EP0674666B1 Polymers functionalised by koch reaction and derivatives thereof
07/01/1998CN1186491A Method to produce and purity cyclic esters
07/01/1998CN1186490A Method to produce and purify cyclic esters
07/01/1998CN1186484A Process for producing cyclohexanonoxim and caprolactam
07/01/1998CN1186483A Separation of alpha-arylpropionic acid ester diastereomers by distillation
07/01/1998CN1186480A Production of cesium compounds
07/01/1998CN1186070A Process for preparation of 13-cis-retionic acid
07/01/1998CN1186064A Purification of gallic acid
07/01/1998CN1186063A Separation of isomers of chloro-benzoic anhydride
07/01/1998CN1186062A Preparation of erythrinus evening-primrose oil containing high gamma-linolenic acid content
06/1998
06/30/1998US5773653 Recovery of carboxylic acid from organic solution that contains an amine and and an extraction enhancer
06/30/1998US5773651 Process for the preparation of fluorine-containing chemical compounds
06/30/1998US5773642 Reaction of alcohol with carbon monoxide in the presence of iridium catalysts
06/30/1998US5773635 Preparation of polyenecarbonyl compounds having a high content of the all-E isomer, and of their acetals or ketals
06/30/1998US5773382 Mixing precursor with a pore modification agent; shaping; stripping; useful for the catalytic oxidation of a hydrocarbon to produce a carboxylic acid anhydride
06/30/1998US5772013 Method and apparatus for producing di- and more highly oxidized carboxylic acids
06/30/1998CA2098378C Process for decomposing .alpha.,.beta.-unsaturated carbonyl compounds in refining acetic anhydride and/or acetic acid
06/30/1998CA2095127C Process for improving flow characteristics of crystalline ibuprofen
06/25/1998WO1998027047A1 Process for the preparation of 4,4'-oxybisphthalic dianhydride
06/25/1998WO1998027046A1 Method for controlling the reactivity of an ozonization reaction product
06/25/1998WO1998027029A1 Methods of preparing an intermediate oxidation product from a hydrocarbon by utilizing an activated initiator
06/25/1998WO1998017619A3 Removal of permanganate reducing compounds and alkyl iodides from a carbonylation process stream
06/25/1998WO1998015518A3 A process for the recovery of lactic acid from aqueous lactate salt solutions, involving the use of ion exchangers
06/25/1998WO1998001411A3 Method of separating (meth)acrylic acid
06/25/1998DE19654980A1 Production of ceramic fibres based on PMN or PMNT
06/25/1998DE19654167A1 Funktionalisierte von Cyclopenten abgeleitete Oligomerengemische, Verfahren zu ihrer Herstellung und ihre Verwendung Functionalized cyclopentene-derived oligomer mixtures, processes for their preparation and their use
06/24/1998EP0849253A1 Process for producing benzoyl chlorides
06/24/1998EP0849252A1 Purification process of lactic acid
06/24/1998EP0849251A1 Iridium-catalysed carbonylation process for the production of acetic acid
06/24/1998EP0849250A1 Iridium-catalysed carbonylation process for the production of acetic acid
06/24/1998EP0849249A1 Iridium catalysed carbonylation process for the production of acetic acid
06/24/1998EP0849248A1 Iridium-catalysed carbonylation process for the production of acetic acid
06/24/1998EP0749409B1 Decarboxylation process
06/24/1998EP0645363B1 Process for producing adipic acid
06/24/1998CN1185757A Oxidation catalyst system and process for oxidation with the same
06/23/1998US5770770 Reactive distillation process and equipment for the production of acetic acid and methanol from methyl acetate hydrolysis
06/23/1998US5770768 Method for preparing carboxylic acids by carbonylation in the presence of iridium
06/23/1998US5770767 Reduction of the 2-chloro-compound using raney nickel catalyst, leaching aluminum from catalyst with base
06/23/1998US5770766 Nonionic porous synthetic adsorbent
06/23/1998US5770765 Process for the production of high-purity isophthalic acid
06/23/1998US5770764 Salt formation with di- or trialkylamine
06/23/1998US5770744 Process for the preparation of succinic anhydride
06/23/1998US5770729 Sulfide compound with polar substituents, formation of sulfoxide, mild conditions, safe, nonpolluting
06/23/1998CA2086779C Process for the purification of acrylic acid
06/23/1998CA2016817C Nickel/silica catalyst and the preparation and use thereof
06/18/1998WO1998026449A2 A method for purification of acids for use in semiconductor processing
06/18/1998WO1998025882A1 Preparation of nylon salts from diamine carbamates and dicarboxylic acids
06/18/1998DE19650212A1 Herstellung von Carbonsäurefluoriden Preparing carboxylic acid fluorides
06/17/1998EP0848286A1 Thermographic recording material with improved image tone and/or stability upon thermal development
06/17/1998EP0847994A1 Process for the preparation of mixed anhydrides
06/17/1998EP0847980A1 Process for the treatment of reaction mixtures obtained by oxidation of cyclohexane
06/17/1998EP0847979A1 Process for the preparation of dicarboxylic acids from the wash waters of cyclohexane oxidation
06/17/1998EP0847978A1 Process for producing (meth)acrylic acid
06/17/1998EP0847974A1 Process for the preparation of cyclopropylacetylene and its derivatives
06/17/1998EP0847800A2 Direct oxygen injection into bubble column reactors
06/17/1998CN1184806A Optical resolution method of (+ or -) -3, 4 -dihydroxybutanoic acid
06/17/1998CN1184805A Method for preparing alpha-flax oil acid
06/17/1998CN1184804A Method for processing the mixture from cyclohexane oxidation
06/17/1998CN1184803A Process for mfg. mixed anhydrides
06/17/1998CN1184802A Method for prepn. of diacid by using washing water from cyclohexane oxidation products
06/17/1998CN1038745C Process for selective hydrodefluorination of tetrafluorophenyl-0-diformaimine to produce 3, 4, 6 -trifluoro phthalic acid
06/16/1998US5767311 Method and apparatus for preparing purified terephtalic acid
06/16/1998US5766521 Process for obtaining cristallized pearls exhibiting the phenomenon of supercooling
06/12/1998CA2224529A1 Direct oxygen injection into bubble column reactors
06/11/1998WO1998024750A1 Production of carboxylic acid fluorides
06/11/1998WO1998024749A1 Method and apparatus for preparing purified terephthalic acid
06/11/1998WO1998024748A1 Process for the racemization of substituted 4-ketocarboxylic acids
06/11/1998WO1998024746A1 Process for the preparation of acrolein and acrylic acid
06/11/1998WO1998024744A1 Polyhalogen hexenes production thereof and production of halogenated c4 carboxylic acids from these compounds
06/11/1998WO1998024740A1 Fluorination of carbonyl-substituted aromatic compounds
06/11/1998WO1998024546A1 Catalytic system containing oxygen, molybdenum and phosphorus, and its application to the oxygen dehydrogenation of saturated carboxylic acids or of their esters, and to the oxidation of alkanes
06/11/1998WO1998024422A2 Method for controlling body fat and/or body weight in animals and pharmaceutical compositions for use therein
06/11/1998CA2269674A1 Method for controlling body fat and/or body weight in animals and pharmaceutical compositions for use therein
06/10/1998EP0846674A1 Iridium catalysed carbonylation process for the production of a carboxylic acid
06/10/1998EP0846146A1 Novel colorants and colorant modifiers
06/10/1998EP0846029A1 Method for separating a palladium catalyst
06/10/1998EP0828701A4 Improved oxidation process
06/10/1998EP0815098A4 Process and apparatus for the preparation and recovery of maleic anhydride
06/10/1998EP0755303B1 Coated catalytic compositions including bismuth, nickel, cobalt, iron and molybdenum, and use thereof for preparing unsaturated aldehydes
06/10/1998EP0684863B1 Separation process
06/10/1998EP0576547B1 Processes for recovering citric acid
06/10/1998DE19704885C1 Preparation of 3-acetoxy-2-methyl-benzoic acid
06/10/1998DE19650199A1 Polyhalogenhexene, ihre Herstellung und die Herstellung von halogenierten C¶4¶-Carbonsäuren daraus Polyhalogenhexene, their preparation and the preparation of halogenated carboxylic acids therefrom C¶4¶
06/10/1998CN1184099A Refining method of para-tert-butyl benzoic acid
06/10/1998CN1038683C Process for producing pyromellitic dianhydride
06/09/1998US5763680 Separation of phosphorus acidic compounds from reaction product fluids by treating with water, treating water with ion exchange resins
06/09/1998US5763679 Metal-ligand complex catalyzed processes
06/09/1998US5763677 Hydroformylation processes
06/09/1998US5763671 Separating phoshorous acidic compounds
06/09/1998US5763670 Hydroformylation processes
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