| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 10/11/2001 | WO2001074486A1 Catalytic composition for carbonylation including iridium and pyridine polymers |
| 10/11/2001 | US20010029309 From tetrahydrofuran using acid catalysts |
| 10/11/2001 | US20010029305 Reacting the corresponding unsaturated cyclopentenone compound with hydrogen cyanide |
| 10/11/2001 | US20010029235 A shaped catalyst for heterogeneously catalyzed reactions in the form of hollow cylinders or annular tablets whose end faces are rounded both to the outer edge to the edge of central hole comprising aluminum oxide as catalyst support |
| 10/11/2001 | US20010029234 A metal oxide catalyst which can produce acrylic acid by a vapor phase catalytic oxidation of propane in high yield and has excellent abrasion resistance comprising oxides of molybdenum, vanadium, antimony and niobium or tantalum |
| 10/11/2001 | US20010029233 Preparing an aqueous solution which contains hetercyclic compounds having nitrogen atom, nitrate anion, ammonium ions, in specific ratios, mixing raw materials containing catalyst constituing element with heterocyclic compound, calcining |
| 10/11/2001 | DE10015365A1 Mixed catalyst of di(oxovanadium) phosphate and specified metal is used for oxidation of alkane, e.g. butane to maleic anhydride, and oxidation or ammoxidation of alkylaromatic to aldehyde or nitrile |
| 10/10/2001 | EP1142862A2 Naphthyl and tetralone derivatives as intermediates |
| 10/10/2001 | EP1142860A1 Intermediates and process for producing fluorine-containing amino acid compound by using the same |
| 10/10/2001 | EP1142858A1 Process for producing aliphatic aldehydic acid and/or aliphatic dicarboxylic acid and catalyst for the production |
| 10/10/2001 | EP1142638A1 Method for regenerating heteropolyacid catalyst and method for producing methacrylic acid |
| 10/10/2001 | EP1140799A1 Novel propargylether derivatives |
| 10/10/2001 | EP1140771A1 Process for the preparation of methyl p-vinylbenzoate and p-vinyl benzoic acid, and their use in latex compositions |
| 10/10/2001 | EP1140767A1 Method for preparing formic acid |
| 10/10/2001 | EP1140766A1 Process for carbonylation of an allylic butenol or butenyl ester of a carboxylic acid |
| 10/10/2001 | EP1140765A1 A production method of aromatic carboxylic acids |
| 10/10/2001 | EP1140764A1 Vapor phase oxidation of acrolein to acrylic acid |
| 10/10/2001 | EP1140763A1 Process control method in acetic acid production |
| 10/10/2001 | EP1140735A1 Preparation of nuclear chlorinated aromatic compounds |
| 10/10/2001 | EP1140355A1 Catalytic oxidation of alkanes to corresponding acids |
| 10/10/2001 | EP1140349A1 Reactor for carrying out gas-liquid, liquid-liquid or gas-liquid-solid chemical reactions |
| 10/10/2001 | EP0912238B1 Production of powders |
| 10/10/2001 | CN1316987A Microbial processf or preparation of acetic acid as well as solvent for its extraction from fermentation liquid |
| 10/10/2001 | CN1316985A Crystal of z-hydroxynaphthalene-3-carboxylic acid and process for preparation thereof |
| 10/10/2001 | CN1316984A Process for production of acetic acid |
| 10/10/2001 | CN1072641C Process for separating and recovering naphthenic acid from fraction oil of petroleum |
| 10/10/2001 | CN1072633C 加氢甲酰化方法 Hydroformylation process |
| 10/09/2001 | US6300513 Causing n-oxyl compound, n-hydroxy-2,2,6,6-tetramethylpiperidine compound and 2,2,6,6-tetramethylpiperidine compound to co-exist in vinyl compound |
| 10/09/2001 | US6300505 Introducing phosphorus compound into gaseous feed stream comprising hydrocarbon, combining with molecular oxygen or molecular oxygen-containing gas, controlled so phosphorus compound is vaporized before feed stream enters catalyst bed |
| 10/09/2001 | US6300495 Process for the preparation of a metal salt of clavulanic acid |
| 10/09/2001 | US6300373 Antiproliferative and neurotrophic molecules |
| 10/04/2001 | WO2001072732A2 Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furan |
| 10/04/2001 | WO2001072678A1 Phenol derivatives, process for preparation of the same and use thereof |
| 10/04/2001 | WO2001072422A2 Method of removing organic iodides from organic media |
| 10/04/2001 | WO2001034545A3 Method for production of formic acid |
| 10/04/2001 | WO2001016083A3 Method for reduction of potassium in an integrated process for the production of 2,6-nda |
| 10/04/2001 | EP1138671A1 Production method of aromatic acylthiocarboxylic acid derivative |
| 10/04/2001 | EP1138667A1 Preparation of cyclopentanonnitriles |
| 10/04/2001 | EP1138664A2 Purified salt of B-hydroxyethoxy acetic acid, 2-P-dioxanone, and manufacturing method therefor |
| 10/04/2001 | EP1138663A1 Method for recovery of terephthalic acid from a material containing poly(ethylene terephthalates) |
| 10/04/2001 | EP1138657A1 Process for generating electrophiles from anions by reaction with electrophilic fluorinating agent |
| 10/04/2001 | EP1138385A1 Catalyst |
| 10/04/2001 | EP1137615A1 Selective hydrodehalogenation method |
| 10/04/2001 | EP1137596A1 Polymetal oxide containing silver oxide and vanadium oxide and the use thereof |
| 10/04/2001 | EP0937023B1 Process for the preparation of an aldehyde |
| 10/04/2001 | CA2400165A1 Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furan |
| 10/03/2001 | CN1316013A Process for preparing optically pure (S)-3,4-dihydroxybutyric acid derivatives |
| 10/03/2001 | CN1316012A Process for preparing optically pure (S)-3-hydroxy-gamma-butyrolactone |
| 10/03/2001 | CN1316011A Continuous process for preparing optically pure (S)-3,4-dihydroxybutyric acid derivatives |
| 10/03/2001 | CN1316010A Continuous process for preparing optically pure (S)-3-hydroxy-gamma-butyrolactone |
| 10/03/2001 | CN1316008A Process for preparing alpha-(1,4) linked oligosaccharide |
| 10/03/2001 | CN1315317A Process for preparing low-turbidity enetutanedioic acid anhydride |
| 10/03/2001 | CN1072203C Process for purifying crude acrylic acid by crystallization |
| 10/03/2001 | CN1072202C Recovery method for highly fluorinated carboxylic acids from gas phase |
| 10/02/2001 | US6297410 Process for the preparation of cyclopropylacetylene |
| 10/02/2001 | US6297350 Using cyclic esters as monomers and a metallic salt as catalyst, reproducible preparation of copolyesters with a random sequence under controlled conditions, metal salt of an aminocarboxylic acid, hydroxycarboxylic acid or a |
| 10/02/2001 | US6297348 2,6-naphthalene dicarboxylic acid (2,6-nda) with a process for producing polyethylene naphthalate, thus eliminating the need for drying and handling, and optimizing particle size, pumping 2,6-nda in an aqueous slurry directly into |
| 09/30/2001 | CA2342535A1 Production method of aromatic carboxylic acid derivative |
| 09/27/2001 | WO2001070364A1 Sublimation purifying method and apparatus |
| 09/27/2001 | WO2001038282A8 Method for oxidation of xylene derivatives |
| 09/27/2001 | WO2001016066A3 Closely linking a nda process with a pen process |
| 09/27/2001 | WO2001010885A3 Birch bark processing and the isolation of natural products from birch bark |
| 09/27/2001 | US20010025122 Countercurrent flow of high boiling hydrophobic liquid |
| 09/27/2001 | US20010025121 Heating 2,3,5,6-tetrachloro-1,4-benzenediamide |
| 09/27/2001 | US20010025114 Preparation of microbial polyunsaturated fatty acid containing oil from pasteurised biomass |
| 09/27/2001 | US20010024630 Shell-and-tube type reactor adapted to circulate heat medium preheated gas for efficient temperature conditions; quick start-up; (meth)acrylic acid and/or (meth)acrolein production by reaction of catalytic gas phase oxidation |
| 09/27/2001 | DE10108811A1 Purification of acetic anhydride for use e.g. in production of colorless polytetramethyleneglycol, involves ozone-treating acetic anhydride to reduce its diketene concentration |
| 09/27/2001 | DE10015063A1 Verfahren zur Herstellung von 1,3-Cyclopentanonnitrilen A process for the preparation of 1,3-Cyclopentanonnitrilen |
| 09/26/2001 | EP1136120A1 Mixed catalyst of vanadyl pyrophosphate and other compounds |
| 09/26/2001 | EP1135356A1 Method of producing acid fluorides from acid chlorides |
| 09/26/2001 | EP1135355A1 Improved process for producing highly pure aromatic carboxylic acids |
| 09/26/2001 | EP0846146B1 Colorant stabilizing composition |
| 09/26/2001 | CN1314879A Production of amides and/or acids from nitriles |
| 09/26/2001 | CN1314878A Method for preparing purified terephthalic acid and isophthalic acid from mixed xylenes |
| 09/26/2001 | CN1314877A Method of producing an aliphatic diacid and nitrous oxide |
| 09/26/2001 | CN1314827A Multilayered shell catalyst for catalytic gaseous phase oxidation of aromatic hydrocarbons |
| 09/26/2001 | CN1314437A Raw material compound and its producing method |
| 09/26/2001 | CN1314337A Method for producing 3,4,5 trimethoxybenzoic acid |
| 09/26/2001 | CN1314336A Method for splitting ibuprofen by two-component chiral reagent |
| 09/26/2001 | CN1314335A Method for absorbing propenoc acid and method for purifying propenoic acid |
| 09/26/2001 | CN1314331A Method for acrylic aldehyde and propenoic acid |
| 09/26/2001 | CN1071735C Method for preparing propenoic acid |
| 09/26/2001 | CN1071734C Method for processing the mixture from cyclohexane oxidation |
| 09/26/2001 | CN1071733C Process for preparking pure antimer of phenylpropionic compounds |
| 09/26/2001 | CN1071732C Manufacture of adipic acid |
| 09/25/2001 | US6294693 Production process for ether carboxylate salt |
| 09/25/2001 | US6294692 Reacting leucine with formamide in presence of formic acid, precipitating n-formylleucine by mixing reaction medium with water and acid, so that final ph of mixture is approximately 2 to 3 |
| 09/25/2001 | US6294691 Reacting branched olefin, or precursor, in batch reactor or plug flow reactor with carbon monoxide and water, in presence of acid ion exchanger and solvent selected from sulfolane, carboxylic acids and esters, recovering branched acid |
| 09/25/2001 | US6294689 Methods for removing catalyst after oxidation of hydrocarbons |
| 09/25/2001 | US6294687 Heating olefin with transition metal complex, protonic acid or hydrogen gas and proton source, in organic solvent, in carbon monoxide atmosphere in homogeneous medium, cooling, flushing with inert gas, removing solvent and catalyst, isolating |
| 09/25/2001 | US6294069 Method for preparing 2-aryl or 2-heterocyclyl chiral propionic acids and their esters |
| 09/25/2001 | US6294066 Apparatus and process for electrodialysis of salts |
| 09/25/2001 | US6294056 Uniformly distributing a supply liquid in a distillation tower over horizontal cross sectional area area in distillation tower to prevent polymerization in distillation tower for distillating (meth)acrylic acid or esters |
| 09/20/2001 | WO2001068891A1 Method of purifying shikimic acid |
| 09/20/2001 | WO2001068657A1 Triphenylphosphine derivative, production process therefor, palladium complex thereof, and process for producing biaryl derivative |
| 09/20/2001 | WO2001068626A1 Method for producing maleic acid anhydride |
| 09/20/2001 | WO2001068583A2 Process for the carbonylation of ethylenically unsaturated compounds |
| 09/20/2001 | WO2001068581A2 The method of chemical recycling of polyethylene terephthalate waste |
| 09/20/2001 | WO2001068245A1 Hollow cylindrical catalyst and a method for producing a maleic acid anhydride |
| 09/20/2001 | US20010023303 By reacting with anhydrous metal salts of a weaker acid than terephthalic acid, until a water soluble compound is obtained, followed by dissolution in water and acidification; nondiscolored product, efficient use of reagents, energy |