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)
11/2003
11/19/2003EP1362841A1 Process to isolate dianhydrides
11/19/2003EP1362840A1 Process for the preparation of aromatic and heteroaromatic carboxylic acids via catalytic ozonolysis
11/19/2003EP1362025A2 Polyhalogen-substituted cinnamic acids and cinnamic acid derivatives and a method for producing the same
11/19/2003EP1362024A1 Preparation of mandelic acid derivatives
11/19/2003EP1218330B1 A process for recovery of acid
11/19/2003EP1214285B1 Process for producing pure terephthalic acid with improved recovery of precursors, solvent and methyl acetate
11/19/2003CN1457335A Method for controlling reaction and controlling apparatus
11/19/2003CN1456546A Method for preparing potassium formate and sodium formate from carbide furnace tail gas as raw material
11/19/2003CN1128130C Method for producing oxalic acid by alkali fusion, oxidation and steam explosion of straw in alkali fusion circulation system
11/18/2003US6649792 Method of chemical recycling of polyethylene terephthalate waste
11/18/2003US6649791 By oxidation of an alkylaromatic with oxygen, using an encapsulated oxo-bridged organometallic cluster catalyst; preparation of terephthalic acid from para-xylene for example; by-product inhibition
11/18/2003US6649774 Catalysts and processes for the conversion of succinates to citraconates or itaconates
11/18/2003US6649773 Method for the manufacture of halophthalic acids and anhydrides
11/18/2003US6649585 Processes for preparing superbasic zinc soaps and methods of using said soaps
11/18/2003US6649028 Column treating process and apparatus thereof
11/15/2003CA2430171A1 Preparation of aromatic and heteroaromatic carboxylic acids by catalytic ozonolysis
11/13/2003WO2003093396A2 Integrated process for preparing fischer-tropsch products and acetic acid from synthesis gas
11/13/2003WO2003093212A1 High-purity (fluoroalkyl)benzene derivative and process for producing the same
11/13/2003WO2003093211A1 Continuous carbonylation process
11/13/2003WO2003093201A1 Method for producing organic alkyne compounds
11/13/2003WO2003092730A1 Hydroxycitric acid salt composition and method of making
11/13/2003WO2003064035B1 Method for the oxidative dehydrogenation of ethane
11/13/2003WO2003059860A3 Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream
11/13/2003WO2002032874A8 Substituted heterocyclic compounds for treating multidrug resistance
11/13/2003WO2002032868A8 2-substituted heterocyclic compounds and their use in treating multidrug resistance
11/13/2003US20030212297 Process for producing a fluorine atom-containing sulfonyl fluoride compound
11/13/2003US20030212295 Continuous carbonylation process
11/13/2003US20030212294 Depolymerization polylactone using catalyst
11/13/2003US20030212284 Stereoisomers or racemic mixture of complex
11/13/2003US20030212281 Heptanonic acid and furanone compounds and compositions
11/13/2003US20030212117 Efficient process for the preparation of a factor Xa inhibitor
11/13/2003US20030212067 Bone disorders; rheumatic diseases; wound healing agents
11/12/2003EP1361205A1 Compounds with hydroxycarbonyl-halogenalkyl side chains
11/12/2003EP1361203A2 Process for manufacturing high purity methacrylic acid
11/12/2003EP1360222A1 Organopolysiloxanes containing phosphonic groups, methods for the production and use thereof
11/12/2003EP1360165A1 Method for reducing eda in acetic anhydride production
11/12/2003EP1360164A1 Production of potassium formate
11/12/2003EP1360160A1 Method for producing high-purity diisobutene
11/12/2003EP1185497B1 Hydrogenation of phthalic acids
11/12/2003CN1454887A Method for preparing high-purity methyl-propenoic acid
11/12/2003CN1454886A Improved method for preparing methyl-propenoic acid and methyl acrylate
11/12/2003CN1454712A Liquid-phase selective oxidation catalyst, and preparing method thereof and its application
11/12/2003CN1454711A Loading type mixed metal oxide catalyst
11/12/2003CN1127471C Method and apparatus for preparing purified terephthalic acid
11/12/2003CN1127374C Carrier catalyst and use as hydrocarbon gaseous oxidation
11/11/2003US6646161 Method for the fractional condensation of a hot gas mixture containing acrylic acid or methacrylic acid and having a high proportion of non-condensable constituents
11/11/2003US6646159 Carbonylation process
11/11/2003US6646158 Catalytic oxidation of alkanes to corresponding acids
11/11/2003US6646154 Method for carbonylation of lower alkyl alcohols using tungsten promoted group VIII catalyst
11/11/2003US6646146 Fatty acid in the liquid phase is contacted with steam in the presence of a compound of a metal that is capable of forming a soap with a large hydration shell as a catalyst.
11/11/2003US6645906 High temperature mixing
11/11/2003US6645905 Contacting mixed metal oxide with liquid selected from organic acids, alcohols, inorganic acids and hydrogen peroxide; recovering insoluble material; calcining insoluble material; mixing with promoter in solvent; removing solvent; calcining
11/11/2003CA2112258C Chiral phospholanes via chiral 1,4-diol cyclic sulfates
11/06/2003WO2003091196A1 Process for the enantioselective synthesis of propargyl alcohol derivatives of r configuration from the racemic mixtures thereof
11/06/2003WO2003091195A1 Method of removing iron contaminants from liquid streams during the manufacture and/or purification of aromatic acids
11/06/2003WO2003090926A1 Method for preparing ruthenium-carrying alumina and method for oxidizing alcohol
11/06/2003WO2003016270A3 Selective estrogen receptor modulators
11/06/2003WO2002032571A9 Catalyst comprising a support and a catalytically active oxide material applied to the surface of the substrate
11/06/2003US20030208093 Reacting acetone cyanohydrin and sulfuric acid, oleum and/or mixtures, hydrolyzing to form alpha-sulfatoisobutyramide and alpha-hydroxyisobutyramide, then cracking and optionally esterifying with alcohols
11/06/2003US20030208092 Reacting cyclopropylcarboxaldehyde and ketene in the presence of catalyst to polylactones used as chemical intermediates such as 3-cyclopropylacrylic acid, vinylcyclopropane or cyclopropylacetylene
11/06/2003US20030208091 Process for producing pyromellitic acid
11/06/2003US20030208085 Oxidation catalysts on supports used for oxidation or ammoxidation of hydrocarbons to unsaturated carboxylic acids or nitriles; catalyst selectivity
11/06/2003US20030207942 Hydroxycitric acid salt composition and method of making
11/06/2003US20030205451 Process for manufacturing high purity methacrylic acid
11/06/2003DE10200200C1 Verfahren zur Herstellung von Sorbinsäure A process for producing sorbic acid
11/06/2003CA2452176A1 Process for preparing ruthenium-carrying alumina and process for oxidizing alcohol
11/05/2003EP1359138A2 Process for the production of maleic anhydride
11/05/2003EP1359137A1 Improved process for methacrylic acid and methacrylic acid ester production
11/05/2003EP1359136A2 Polymeric resin compounds and their preparation
11/05/2003EP1358932A1 Supported mixed metal oxide catalyst
11/05/2003EP1358170A1 Process for preparing higher primary alkanols
11/05/2003EP1358149A1 Method for cleaning crude terephthalic acid and catalysts suitable for the same and containing carbon fibres
11/05/2003EP1358148A1 Quasi-crystalline hydrated magnesium-aluminium hydroxy carboxylates, their preparation and their use
11/05/2003EP1358147A1 Improved method for the manufacture of acrylic acid
11/05/2003EP1358146A1 Low energy carbonylation process
11/05/2003EP1358145A1 Modification of the catalytic system in an industrial process for making acetic and/or methyl acetate acid
11/05/2003EP1159248B1 Method for the catalytic gas phase oxidation of propene into acrylic acid
11/05/2003EP1135355B1 Improved process for producing highly pure aromatic carboxylic acids
11/05/2003CN1454201A Gold catalyst for selective oxidation
11/05/2003CN1454115A Catalysts for the oxidation of ethane to acetic acid and ethylene, methods of making and using the same
11/05/2003CN1453273A Benzene anhydride recovering and refining method from rectified residue
11/05/2003CN1453262A Production process of pyrogallic acid
11/05/2003CN1453261A Continuous air oxidation process of producing methyl benzoic acid
11/05/2003CN1453260A Process for decomposing Michael type adduct
11/05/2003CN1453259A Method of catalyzing oxidation of aromatic methyl benzene with air to prepare aromatic carboxylic acid
11/05/2003CN1453071A Loaded V-P-O catalyst and its prepn and use
11/05/2003CN1453066A Catalyst for hydrogenating cis-butenedioic anhydride to prepare butanedioic anhydride and its prepn and application
11/05/2003CN1126730C Process for separating and purifying terephthalic acid from its waste
11/05/2003CN1126729C Method for preparing (S)-ibuprofen
11/05/2003CN1126728C Preparation of (S)-ibuprofen
11/05/2003CN1126587C Method for separating a catalyst by membrane electrodialysis
11/04/2003US6642419 Continuous reaction of such as N-hydroxyphthalimide utilizing water removal; by product inhibition; maintaining catalytic activity
11/04/2003US6642415 Method for recovering fluorinated emulsifiers
11/04/2003US6642414 Subjecting a compound selected from propylene, propane, acrolein, or a mixture or one selecated from isobutylene, tert-butyl aclohol, methyl-tert-butyl alcohol, to catalytic oxidation, then gas phase solvent absorption of the product
11/04/2003US6642413 Process for monitoring a continuous acetic acid and/or methyl acetate production
11/04/2003US6642412 Forming an amine salt of an aromatic polycarboxylic acid, continuously decomposing, removing the amine and water by distillation under heating, taking out a slurry, separating and recovering aromatic polycarboxylic acid crystals
11/04/2003US6642407 Production, purification and polymerization of aromatic dicarboxylic acids
11/04/2003US6642394 Reacting acid with fatty acid anhydride and neutralizing while avoiding polymerization; then reacting with secondary or tertiary alcohol having heterocyclic or fused cyclic functionality under alkaline conditions; high yield; purity
11/04/2003US6642174 Admixing compounds of molybdenum, vanadium, and a metal compound of tellurium or antimony) and one or more other metal compounds to form a gel, aging the gel and calcining to form mixed metal oxide (an oxidation) catalyst
11/04/2003US6642173 Contacting mixed metal oxide with liquid selected from organic acids, alcohols, inorganic acids and hydrogen peroxide; recovering insoluble material; calcining insoluble material; mixing with promoter in solvent; removing solvent; calcining
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