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)
11/2001
11/29/2001	WO2001027062A3 Process and device for hydrolytically obtaining a carboxylic acid and alcohol from the corresponding carboxylate
11/29/2001	US20010047109 Degassing an aqueous potassium sorbate solution to control the dissolved oxygen concentration to <3.0 mg/l; storage stability; discoloration inhibition; food preservative
11/29/2001	DE10026141A1 Verfahren zur Herstellung von Poly- oder Monomethylolalkansäuren Process for the preparation of poly- or monomethylolalkanoic
11/29/2001	DE10026139A1 Verfahren zur Steuerung der Partikelgröße in der Kristallisation von Dimethylolalkansäuren A method for controlling the particle size in the crystallization of dimethylolalkanoic
11/29/2001	DE10026134A1 Verfahren zur Isolierung von Polymethylolakansäuren und zur Entsorgung der dabei anfallenden Abfallströme A method for isolating Polymethylolakansäuren and disposal of the resulting waste streams
11/29/2001	DE10025700A1 Verfahren zur Herstellung von trifluorethoxysubstituierten Benzoesäuren A process for the preparation of trifluoroethoxy-substituted benzoic acids
11/29/2001	DE10024437A1 Verfahren zur selektiven Herstellung von Essigsäure durch katalytische Oxidation von Ethan Process for the selective production of acetic acid by catalytic oxidation of ethane
11/28/2001	EP1157981A2 Process for producing a high purity aromatic polycarboxylic acid
11/28/2001	EP1157980A1 Process for the production of lactic acid by evaporative crystallisation
11/28/2001	EP1157740A2 Rhodium containing solutions
11/28/2001	EP1157739A1 Catalyst for producing acetic acid, method for preparing the same and method for producing acetic acid using the same
11/28/2001	EP1157726A1 Reactive crystallization method to improve particle size
11/28/2001	EP1156996A1 Process for the shaping of alkaline (earth) metal benzoate particles
11/28/2001	EP1156877A1 Catalysts for catalytic oxidation of propane to acrylic acid, methods of making and using the same
11/28/2001	EP0877727B1 Integrated process for the production of vinyl acetate and/or acetic acid
11/28/2001	CN1324342A Process for the preparation of alpha-arylalkanoic acids
11/28/2001	CN1324341A Carbonylation of methanol in the presence of a rhodium/iridium/iodide ion catalytic system
11/28/2001	CN1324340A Process and the manufacture of alpha, alpha-branched carboxylic acids
11/28/2001	CN1323779A Method for starting reactor, and reactor system
11/28/2001	CN1134397C Carbonylation of methanol in the presence of a rhodium/iridium/iodide ion catalytic system
11/28/2001	CN1075495C Process for prepn. 2-(omega-alkoxycarbonylalkanoyl)-4-butanolide and long-chain omega-hydroxy carboxylic acid
11/28/2001	CN1075485C Process for prepn. of shikimic acid and its derivatives
11/27/2001	US6323364 Reacting methanol with carbon monoxide in a liquid reaction medium containing rhodium, water, acetic acid, soluble salt, iodide as co-promoter, methyl acetate, methyl iodide; recovering acetic acid
11/27/2001	US6323240 4-phenyl-4-oxo-butanoic acid derivatives with kynurenine-3-hydroxylase inhibiting activity
11/26/2001	CA2349136A1 Reactive crystallization method to improve particle size
11/22/2001	WO2001087815A2 Process for the production of carboxylic acids
11/22/2001	WO2001087476A1 Counterflow reactor with a bundle of contact tubes
11/22/2001	US20010044556 Carbon monoxide reacted with alcohol in presence of catalyst system comprising palladium cations, bidentate diphosphine, and anions derived from sulfonic acid, in apriotic solvent (anisole)
11/22/2001	US20010044550 Process for the branching of saturated and/or unsaturated fatty acids and/or alkyl esters thereof
11/22/2001	US20010043895 Method for the preparation of rhodium containing solutions
11/22/2001	DE10024342A1 Reactor having a contact tube bundle, useful for oxidation reactions, has a heat exchange agent recycle loop fed through the chamber and rotating disks that rotate in the reactor center and edge.
11/21/2001	EP1156027A1 A process for producing unsaturated aldehydes and unsaturated carboxylic acids
11/21/2001	EP1154978A1 Soluble double metal salt of group ia and iia of (-) hydroxycitric acid
11/21/2001	EP1154977A1 Methods of extracting catalyst in solution in the manufacture of adipic acid
11/21/2001	EP1056708B1 Method for separating maleic anhydride from maleic anhydride-containing mixtures by stripping
11/21/2001	EP1023259B1 Process for the oxidation of di-, tri-, oligo- and polysaccharides into polyhydroxycarboxylic acids
11/21/2001	EP0920408B1 Method for preparing arylic acid or methacrylic acid
11/21/2001	EP0915821B1 Selective preparation process of acetic acid and catalysts therefor
11/21/2001	EP0884300B1 Process for preparing free alpha-hydroxy acids from ammonium salts thereof
11/21/2001	EP0784044B1 Process for producing monocarboxylic and/or dicarboxylic acids
11/21/2001	CN1323300A An improved process for the preparation of new antidiabetic agents
11/21/2001	CN1323288A Method for crystallising carboxylic acid
11/21/2001	CN1323287A Process for making aromatic aldehydes
11/21/2001	CN1323286A Process for making aromatic aldehydes using ionic liquids
11/21/2001	CN1322706A Process for producing maleic anhydride through gas phase oxidizing reaction in the presence of catalyst
11/21/2001	CN1322524A Use of pentanoate derivant
11/20/2001	US6320083 Reacting alkyl aromatic compound with carbon monoxide in presence of acidic ionic liquid to form alkyl aromatic aldehyde
11/20/2001	US6320080 Dimerizing alpha olefins, isomerizing, reacting with carbon monoxide and hydrogen under oxo conditions using cobalt-carbonyl-phosphine catalyst, recovering branched alcohols, oxidizing, recovering branched alkyl carboxylates
11/20/2001	US6320077 Lactic acid processing; methods; arrangements; and, product
11/20/2001	US6320075 Oxidizing in gas phase saturated and/or unsaturated hydrocarbon with oxygen-containing gas and water vapor in presence of catalyst, reducing acid concentration in recirculated portion of outlet gas using countercurrent scrub
11/20/2001	US6320073 Process for separation of the dipotassium salt of naphthalene dicarboxylic acid using activated carbon beds
11/20/2001	US6320062 15-hydroxyeicosatetraenoic acid analogs with enhanced metabolic stability and methods of their use in treating dry eye disorders
11/20/2001	US6319952 Exposing the membrane to branched fatty acids or their salts, esters or amides which improve and enable the penetration and absorption of active ingredients through biomembranes
11/20/2001	US6319950 Formed by reacting an ester of ricinoleic acid with a tosyl chloride or a mesyl chloride and reacting said tosylate or mesylate of an ester of ricinoleic acid with diazabicycloundecene or diazabicyclononene
11/20/2001	CA2089850C Catalyst for dehalogenation of alpha-halogenated carboxylic acids and its use for the purification of monochloracetic acid
11/15/2001	WO2001085665A1 Process for producing acrylic acid
11/15/2001	WO2001085649A2 Synthesis of 2-halobenzyl alkanoic acid
11/15/2001	WO2001085337A1 Multi-metal oxide containing silver, vanadium and one or several elements of the phosphorous group and use thereof
11/15/2001	WO2001085330A2 Tubular reactor with gas injector for gas phase catalytic reactions
11/15/2001	US20010041811 Production of high purity aromatic carboxylic acid by oxidation in benzoic acid and water solvent
11/15/2001	US20010041742 Reacting adipic diester with alkoxide; coupling with halomethylstyrene
11/15/2001	US20010041359 Process for the preparation of optically and chemically highly pure (R) - or (S) -alpha- hydroxycarboxylic acids
11/15/2001	DE10022103A1 Multi-metal oxide catalyst for gas-phase partial oxidation of aromatic hydrocarbons, e.g. for phthalic anhydride production, contains silver, vanadium, a phosphorus group element and optionally other metals
11/15/2001	CA2378138A1 Synthesis of 2-halobenzyl alkanoic acid
11/14/2001	EP1153910A1 Process for the preparation of (2r)-2-propyloctanoic acid
11/14/2001	EP1153009A1 Method for carbonylation of lower aliphatic alcohols
11/14/2001	EP1153008A1 Method for carbonylation of lower alkyl alcohols
11/14/2001	EP1153007A1 Iridium catalyst for carbonylation of lower aliphatic alcohols
11/14/2001	EP1152826A1 Phosphorus/vanadium maleic anhydride catalyst preparation
11/14/2001	EP0891318B1 Azeotropic distillation process
11/14/2001	EP0686613B1 Ozonide reducing agent
11/14/2001	CN1322191A Aromatic acid monomers, polymers, products and processes for their manufacture
11/14/2001	CN1322190A Improved process for producing pure carboxylic acids
11/14/2001	CN1322151A Selective oxidation process and catalyst therefor
11/14/2001	CN1321632A (4S,5S)-and (4R,5R)-gamma-methyl-delta-hydroxyl-alkanoic acid and its alkyl ester, preparation method and application
11/14/2001	CN1321543A Catalyst for preparing pyromellitic acid dianhydride by gas phase oxidation of durene and its preparation method
11/14/2001	CN1074762C Process for preparing chromium L-threonate, its preparing process and application
11/14/2001	CN1074761C Process for separating and concentrating formic acid with phosphorus-contained extractant
11/13/2001	US6316668 Recovering carboxylic acid in solid phase; complexing alkylamine-carboxylic acid; heating to decompose
11/13/2001	US6316666 Precipitation by mixing alkaline aqueous solution of crude phenylenedioxydiacetic acid with mineral acid; etherification
11/13/2001	US6316665 Process for producing diacids by carboxylation of phenolic compounds
11/13/2001	US6316659 Heating 5-formyl valeric or 6-hydroxycaproic acid or ester with water and alcohols in presence of heterogeneous oxidic catalyst; cyclization, dehydrogenation, catalysis
11/13/2001	US6316646 Process for the continuous catalytic transformation of organic compounds
11/13/2001	US6316645 Synthesis of conjugated polyunsaturated fatty acids
11/13/2001	US6316643 Unsaturated fatty acids or derivatives is contacted with a salt or mixture of salts in liquid form to obtain branched fatty acids and oligomerized fatty acids
11/13/2001	US6316627 Process for the preparation of flecainide
11/08/2001	WO2001083421A1 Process for the preparation of 2-halobenzoic acids
11/08/2001	WO2001083420A2 Method of making substituted dihalo aromatic acid chlorides
11/08/2001	WO2001083407A1 Alkene oligomerization process
11/08/2001	WO2001083405A1 Process for the catalytic oxidation of hydrocarbons
11/08/2001	WO2001083104A2 Catalysts for the oxidation of unsaturated aldehydes to produce carboxylic acids, methods of making and using the same
11/08/2001	WO2001083103A2 Catalysts for the oxidation of ethane to acetic acid and ethylene, methods of making and using the same
11/08/2001	US20010039364 Reacting formaldehyde or derivative with carbon monoxide in the presence of catalyst comprised of acid and sulfone; efficiency
11/08/2001	US20010039240 Method for regenerating heteropolyacid catalyst and method for producing methacrylic acid
11/07/2001	EP1151981A2 Process for the purification of 2,6-dimethylnaphthalene and its use in the production of 2,6-naphthalenedicarboxylic acid
11/07/2001	EP1150938A1 Oxidation of hydrocarbons to acids in the presence of fluoro compounds
11/07/2001	EP1150759A1 Method and device for purifying substances by means of crystallisation
11/07/2001	EP0971869B1 Low water diamine/dicarboxylic acid salt preparation
11/07/2001	EP0626939B1 Tri-substituted phenyl derivatives as phosphodiesterase inhibitors
11/07/2001	CN1321110A Catalyst

1 ... 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 ... 432