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)
11/2002
11/20/2002	EP1257524A1 A process for the preparation of salts of l-carnitine and alkanoyl l-carnitine with mucic acid
11/20/2002	EP1257520A1 Production of high purity aromatic carboxylic acid by oxidation in benzoic acid and water solvent
11/20/2002	EP1257361A1 PHOSPHOR, ARSENIC AND ANTIMONY COMPOUNDS BASED UPON DIARYL-ANELLATED BICYCLO 2.2.N&excl; PARENT SUBSTANCES AND CATALYSTS CONTAINING SAME
11/20/2002	EP1082328B1 Production of optically active phospholanes
11/20/2002	EP0915728B1 Device for phase separation
11/20/2002	CN1380838A Method of separating imide compound
11/20/2002	CN1380279A (4-alkynyl), aromatic keto-acid compound, synthesis method and its application
11/20/2002	CN1380273A Methyl acetate hydrolysis process and its equipment
11/20/2002	CN1380139A Nox processed mixed metal oxide catalyst
11/20/2002	CN1094483C 加氢甲酰化方法 Hydroformylation process
11/20/2002	CN1094482C Azeotropic distillation process
11/19/2002	US6482981 Method for producing acrylic acid
11/19/2002	US6482980 Close control of temperature
11/19/2002	US6482979 Perfluorinated acid fluorides and preparation thereof
11/19/2002	US6482978 Production method of aromatic carboxylic acid derivative
11/19/2002	US6482906 Process for preparing and using neodymium neodecanoate
11/14/2002	WO2002090312A1 Process for preparing carboxylic acids and derivatives thereof
11/14/2002	WO2002090311A1 Process for the removal of undesired flavour and odour components from potassium lactate
11/14/2002	WO2002090310A1 Method for purifying a raw melt of at least one monomer by crystallization
11/14/2002	WO2002090309A1 Method for oxidising hydrocarbons
11/14/2002	WO2002090308A1 Method for the production of acrylic acid by heterogeneously catalyzed partial propane oxidation
11/14/2002	WO2002090307A1 2-[4-(2, 2-dihalocyclopropyl)phenoxy]-alkanoic acids and esters thereof production process
11/14/2002	WO2002090306A1 Process for production of cyclic ketone
11/14/2002	WO2002090299A2 Method for the production of a purified melt of at least one monomer
11/14/2002	WO2002072524A3 Method for producing vinyl, aryl and heteroaryl acetic acids and derivatives thereof
11/14/2002	US20020169331 Method of separating imide compound
11/14/2002	US20020169330 Method for production of pyromellitic dianhydride
11/14/2002	US20020168313 Quasi-crystalline carboxylates
11/14/2002	DE10138101A1 Process for the separation of acrylic acid, useful for absorbent resins, comprises recovery of crude acrylic acid, treatment with an aldehyde trap, distillation and thin film evaporation
11/14/2002	CA2446638A1 Process for preparing carboxylic acids and derivatives thereof
11/13/2002	EP1256564A1 Halogen-containing aromatic compound
11/13/2002	EP1256563A1 Method for production of pyromellitic dianhydride
11/13/2002	EP1256381A2 Promoted multi-metal oxide catalyst
11/13/2002	EP1255726A2 (r)-2-aryl-propionamides, useful in the inhibition of il-8 induced chemiotaxis of neutrophils
11/13/2002	CN1379752A Aromatic di-ceto-derivatives use as glucose-6-phosphate translocase inhibitors
11/13/2002	CN1379748A Process for preparing optically active alpha-hydroxy acids and derivatives thereof
11/13/2002	CN1379746A Process for simultaneous production of maleic anhydride and its hydrogenated derivatives
11/13/2002	CN1379012A Process for preparing calcium magnesium acetate by vacuum distillation method
11/12/2002	US6479699 Process for carboxylation of naphthoic acid to naphthalene dicarboxylic acid
11/12/2002	US6479518 Zwitterionic tachykinin receptor antagonists
11/12/2002	US6478965 Recovery of fermentation salts from dilute aqueous solutions
11/12/2002	CA2252436C Process for the manufacture of surfactants containing branch chain alkyl groups
11/12/2002	CA2221916C Recycle heat exchange flash treater and process
11/07/2002	WO2002088066A1 Method of purifying aromatic polycarboxylic acid
11/07/2002	WO2002062737A3 Heterogenically catalysed gas-phase partial oxidation for precursor compounds of (meth)acrylic acid
11/07/2002	US20020165416 Efficiently producing a compound having an alkyl group or alkenyl group bonded at the alpha position of an electron attractive group, by catalytic radical addition reaction with compound of Group 5,6,7,8, or 9
11/07/2002	US20020165410 Transport and/or storage of acrylic acid
11/07/2002	US20020165407 Reboiler made of nickel-chromium-iron alloy with 3-20% molybdenum and .5-7% of copper
11/07/2002	US20020165393 Kinetic resolutions of chiral 2- and 3-substituted carboxylic acids
11/07/2002	US20020165340 Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process
11/06/2002	EP1254942A2 Drilling fluid containing caesium compounds
11/06/2002	EP1254886A1 Process for producing fluorocarboxylic anhydride
11/06/2002	EP1254710A2 Single crystalline phase catalyst
11/06/2002	EP1254709A2 Recalcined catalyst
11/06/2002	EP1254708A2 Production of a catalyst by mixing of components at high temperature
11/06/2002	EP1254707A1 Method for improving a vanadium based mixed metal oxide catalyst by treating it with a liquid, the catalyst thereby obtainable and its use in oxidation and ammoxidation reactions
11/06/2002	EP1254706A2 Annealed and promoted catalyst
11/06/2002	EP1254102A1 Alkynylsubstituted propionic acid derivatives and their use against diabetes and obesity
11/06/2002	EP1254099A2 Material for a facility for the production of anhydrous formic acid
11/06/2002	EP1254098A1 Oxidation of alkyl aromatic compounds to aromatic acids in an aqueous medium
11/06/2002	EP1181097B1 Method of producing monolithic oxidation catalysts and their use in gas phase oxidation of carbohydrates
11/06/2002	CN1378556A Process for producing aspartame derivative, crystals thereof, novel production intermediates therefor and process for producing intermediate
11/06/2002	CN1378482A Method for producing acetic catalyst and said catalyst, and method for producing acetic acid by said catalyst
11/06/2002	CN1377874A Process for preparing sorbic acid
11/06/2002	CN1377873A Non-catalytic hydrolyzing method for methyl acetate
11/06/2002	CN1377872A Binary C4-C6 carboxylic acids and the separation, purifying and use of their mixtures
11/05/2002	US6476261 Oxidation process for the production of alkenes and carboxylic acids
11/05/2002	US6476260 Method of producing aldehydes and carboxylic acids by oxidizing primary alcohols
11/05/2002	US6476259 Heteropolyacid catalysts of complex oxide based on essentially molybdeum and phosphorus and and one based on cerium and zirconium; stability; durability; efficiency; vapor phase oxidation of methacrolein, isobutryaldehyde, etc.
11/05/2002	US6476258 Process for producing aryloxyacetic acids
11/05/2002	US6476257 Method for preparing aromatic carboxylic acids from alkylaromatics by liquid-phase oxidation
11/05/2002	US6476238 Purification method for obtaining high-purity PMDA
11/05/2002	US6476162 Method for preventing easily polymerizing substance from polymerization and method for production of (meth) acrylic acid or ester thereof
11/05/2002	US6475133 Methods for making 2-(ω-alkoxycarbonylalkanoyl)-4-butanolide, ester of omega-hydroxy-(ω-3)-ketoaliphatic acid, and derivatives thereof
10/2002
10/31/2002	WO2002085838A1 Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds
10/31/2002	WO2002085836A1 Binaphtol derivative and process for producing the same
10/31/2002	WO2002085835A1 Granule of parahydroxybenzoic acid or parahydroxybenzoic ester and process for producing the same
10/31/2002	WO2002085834A1 Method for purifying an organic solvent for the purpose of absorption of maleic acid anhydride
10/31/2002	WO2002085833A1 Processes for preparation of optically active 2-benzyl- succinic acid and optically active 2-benzylsuccinic acid monoamides
10/31/2002	WO2002048072A3 Organic reactions with co generating materials
10/31/2002	WO2000034220A3 Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization
10/31/2002	US20020161260 Such as methacrylic anhydride by reacting an unsaturated acid such as methacrylic acid and a lower aliphatic anhydride such as acetic anhydride in the presence of a catalyst and a stabilizer
10/31/2002	US20020161259 Catalyst comprising: a metal support comprising copper and a non-copper metal; and a copper-containing coating in specified amounts of copper; making N-(phosphonomethyl)glycine from monoethanolamine
10/31/2002	US20020161256 Orthorhombic phase mixed metal oxide of vanadium, molybdenum and/or tungsten, one of tellurium and selenium, and at least one other element; oxidation catalysts for production of acrylic acid or acrylonitrile
10/31/2002	US20020161243 Method of gas phase catalytic oxidation to give maleic aicd anhydride
10/31/2002	US20020157937 Mixing a feed stream (hydroxy organic acid, an ammonim salt, ester or amide) and a azeotroping agent, heating the above feed, producing a first vapor stream of ester of hydroxy organic acid and azotropic agent, separating the vapor stream
10/31/2002	EP1144353A3 Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization
10/31/2002	CA2444804A1 Method for purifying an organic solvent for the purpose of absorption of maleic acid anhydride
10/30/2002	EP1253156A2 High activity ruthenium or osmium metal carbene complexes for olefin metathesis reactions and synthesis and application thereof
10/30/2002	EP1253132A1 Process for producing (meth)acrylic acid
10/30/2002	EP1253128A1 Perfluoroisopropylbenzene derivatives
10/30/2002	EP1252130A1 Low temperature purification of naphthalene dicarboxylic acids
10/30/2002	EP1252129A2 Purification method for (meth)acrylic acid
10/30/2002	EP1252128A1 Method for producing anhydrous formic acid
10/30/2002	CN1377376A Recovery of modifier compounds and polar organic compounds from a poly (arylene sulfide)
10/30/2002	CN1377335A Process for producing a purified lactic acid solution
10/30/2002	CN1377292A Recovery process for volatile compounds from solids in aqueous solution
10/30/2002	CN1376663A Process for preparing tartaric acid
10/30/2002	CN1376534A Multi tubular reactor of solid bed and using method thereof
10/30/2002	CN1093525C Process for separating oxidation reaction product and oxidation catalyst

1 ... 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 ... 432