| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 03/15/2001 | WO2001017931A2 Regeneration of onium fluoride-hf adducts |
| 03/15/2001 | WO2001017899A1 Metal phosphates |
| 03/15/2001 | DE19943858A1 Verfahren zur Reinigung von Carbonsäurechloriden A process for purifying carboxylic acid chlorides |
| 03/15/2001 | DE19943844A1 Verfahren zur Herstellung von Carbonsäurechloriden A process for the preparation of carboxylic acid chlorides |
| 03/14/2001 | EP1082328A1 Production of optically active phospholanes |
| 03/14/2001 | EP1082317A1 Method for producing phthalic anhydride by means of catalytic vapor-phase oxidation of o-xylol/naphthalene mixtures |
| 03/14/2001 | EP1082286A1 Method for preparing purified terephthalic acid and isophthalic acid from mixed xylenes |
| 03/14/2001 | EP1082285A1 Hydroformylation of olefins using supported bis(phosphorus) ligands |
| 03/14/2001 | EP1082283A1 Method for producing hexanediol-1,6 |
| 03/14/2001 | EP0934241B1 Production of 6-bromo-2-methoxynaphthalene and derivatives |
| 03/14/2001 | EP0879222B1 Method for preparation of perfluoroalcanecarboxylic and perfluoroalcanesulfonic acids |
| 03/14/2001 | CN1287552A Method for separating maleic anhydride from maleic anhydride-containing mixtures by stripping |
| 03/14/2001 | CN1287504A Method for separating vaporous phthalic acid anhydride from a gas stream |
| 03/14/2001 | CN1287113A Process for producing (methyl) propenoic acid |
| 03/14/2001 | CN1287112A Method of scaling in phthalic acid oxidizing and drying machine |
| 03/14/2001 | CN1287111A Technology for producing aromatic carboxylic acid |
| 03/14/2001 | CN1063169C Process for producing alkylbenzoic acid |
| 03/13/2001 | US6201152 Heating mixture of methyl-3,5-dichloro-4-methylbenzoate and alpha,alpha,alpha-trichloromethylbenzene in presence of ammonium molybdate catalyst |
| 03/13/2001 | US6201021 Pentanoic acid derivatives |
| 03/13/2001 | CA2034543C Process for the preparation of dodecanedioic acid |
| 03/08/2001 | WO2001016085A1 Process for producing a vic-dichloro acid fluoride |
| 03/08/2001 | WO2001016083A2 Method for reduction of potassium in an integrated process for the production of 2,6-nda |
| 03/08/2001 | WO2001016082A2 Purification of aromatic diacids |
| 03/08/2001 | WO2001016081A2 A process for improving yields in a disproportionation reaction (high yield henkel) |
| 03/08/2001 | WO2001016080A1 A method for increasing the yield of 2,6-nda |
| 03/08/2001 | WO2001016079A2 A process for separation of the dipotassium salt of naphthalene dicarboxylic acid using activated carbon beds |
| 03/08/2001 | WO2001016078A2 Process for the receovery of disproportionation reaction products |
| 03/08/2001 | WO2001016077A1 Alkyl carboxylate salts as solvents for henkel-related processes |
| 03/08/2001 | WO2001016076A1 A method for solvent free hydrodebromination in the production of aromatic carboxylic acids |
| 03/08/2001 | WO2001016075A1 Process for making an aromatic diacid in one step using a single catalyst system |
| 03/08/2001 | WO2001016074A2 An integrated process for the production of 2,6-naphthalene dicarboxylic acid |
| 03/08/2001 | WO2001016073A1 A process for producing diacids by carboxylation of phenolic compounds |
| 03/08/2001 | WO2001016072A1 Carboxylation of hydrocarbons to terephthalic acid or naphthalene dicarboxylic acid |
| 03/08/2001 | WO2001016071A1 A process for carboxylation of naphthoic acid to naphthalene dicarboxylic acid |
| 03/08/2001 | WO2001016070A1 Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile |
| 03/08/2001 | WO2001016069A1 Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile |
| 03/08/2001 | WO2001016068A2 Disproportionation catalyst |
| 03/08/2001 | WO2001016067A2 A process for separation of crude naphthalene dicarboxylic acid using reverse osmosis |
| 03/08/2001 | WO2001016066A2 Closely linking a nda process with a pen process |
| 03/08/2001 | DE19956365A1 Regenerierung von Oniumfluorid-HF-Addukten Regenerating onium fluoride-HF adducts |
| 03/08/2001 | CA2384507A1 Process for making an aromatic diacid in one step using a single catalyst system |
| 03/08/2001 | CA2383507A1 A process for separation of the dipotassium salt of naphthalene dicarboxylic acid using activated carbon beds |
| 03/08/2001 | CA2383506A1 Alkyl carboxylate salts as solvents for henkel-related processes |
| 03/08/2001 | CA2383422A1 Carboxylation of hydrocarbons to terephthalic acid or naphthalene dicarboxylic acid |
| 03/08/2001 | CA2383377A1 A method for solvent free hydrodebromination in the production of aromatic carboxylic acids |
| 03/08/2001 | CA2383374A1 Method for reduction of potassium in an integrated process for the production of 2,6-nda |
| 03/08/2001 | CA2383359A1 A process for producing diacids by carboxylation of phenolic compounds |
| 03/08/2001 | CA2383354A1 A process for improving yields in a disproportionation reaction (high yield henkel) |
| 03/08/2001 | CA2383353A1 A method for increasing the yield of 2,6-nda |
| 03/08/2001 | CA2383346A1 Purification of aromatic diacids |
| 03/08/2001 | CA2383337A1 An integrated process for the production of 2,6-naphthalene dicarboxylic acid |
| 03/08/2001 | CA2383312A1 Process for the recovery of disproportionation reaction products |
| 03/08/2001 | CA2383246A1 A process for carboxylation of naphthoic acid to naphthalene dicarboxylic acid |
| 03/08/2001 | CA2383239A1 Disproportionation catalyst |
| 03/08/2001 | CA2383232A1 A process for separation of crude naphthalene dicarboxylic acid using reverse osmosis |
| 03/08/2001 | CA2383229A1 Closely linking a nda process with a pen process |
| 03/07/2001 | EP1081124A2 Process for catalytic selective oxidation of a hydrocarbon substrate |
| 03/07/2001 | EP1080784A1 A catalyst useful for oxidation of alkanes |
| 03/07/2001 | EP1080781A1 Method for catalytic gas phase oxidation |
| 03/07/2001 | EP1080780A1 Reactor for catalytic gas phase oxidation |
| 03/07/2001 | EP1080779A2 Reactor for catalytic selective oxidation of a hydrocarbon substrate |
| 03/07/2001 | EP1080133A1 Polymer conjugates of polyethylene glycols or oxides with polyethyleneimine or polypropyleneimine for extracting carboxylic acids from solutions |
| 03/07/2001 | EP1080096A1 Novel furylphosphines and organometallic complexes containing them |
| 03/07/2001 | EP1080064A1 Controlled oxidation of hydrocarbons to intermediate oxidation products |
| 03/07/2001 | EP1080063A1 Method of preparing alkyl carboxylic acids by carboxylation of lower alkanes methane |
| 03/07/2001 | CN1286709A Processes for producing polyester and producing sorbic acid |
| 03/07/2001 | CN1286688A Method for preparation of citalopram |
| 03/07/2001 | CN1286678A Process for preparation of sorbic acid |
| 03/07/2001 | CN1286677A Process for preparation of sorbic acid or salts thereof |
| 03/07/2001 | CN1286676A Process for preparation of sorbic acid |
| 03/07/2001 | CN1286675A Process for preparation of sorbic acid |
| 03/07/2001 | CN1062852C Process for recovery of Co- and Mn-catalyst from production of phthalic acid |
| 03/06/2001 | US6197997 Loaded ion exchange resins, their preparation and uses |
| 03/06/2001 | US6197075 As sediment reducing additives for petroleum fuels |
| 03/01/2001 | WO2001014359A1 Production of maleic anhydride |
| 03/01/2001 | WO2001014309A1 Branched, substantially unsaturated ester oils |
| 03/01/2001 | WO2001014307A1 Columnar crystals of 6-hydroxy-2-naphthoic acid and process for the production thereof |
| 03/01/2001 | WO2001014306A1 Vapor phase carbonylation process using promoted iridium catalyst |
| 03/01/2001 | WO2001014305A1 Vapor phase carbonylation process using promoted iridium catalyst |
| 03/01/2001 | WO2001014304A1 Non-corrosive catalytic hydrolysis of fatty acid esters to fatty acids |
| 03/01/2001 | WO2001014056A1 Group 4 metal promoted iridium carbonylation catalyst |
| 03/01/2001 | WO2001014055A1 Group 5 metal promoted iridium carbonylation catalyst |
| 03/01/2001 | DE19939630A1 Verfahren zum Feinreinigen einer wäßrigen Lösung, die eine fermentativ hergestellte organische Säure enthält A method for fine cleaning an aqueous solution which contains an organic acid produced by fermentation |
| 03/01/2001 | CA2348401A1 Columnar crystals of 6-hydroxy-2-naphthoic acid and process for the production thereof |
| 02/28/2001 | EP1078921A1 Novel intermediates and processes for the preparation of optically active octanoic acid derivatives |
| 02/28/2001 | EP1078911A2 Process for the fine purification of an aqueous solution containing an organic acid produced by fermentation |
| 02/28/2001 | EP1078910A1 Non-corrosive catalytic hydrolysis of fatty acid esters to fatty acids. |
| 02/28/2001 | EP1078906A1 Process for the removal of short chain fatty acids from aqueous glycerol solutions |
| 02/28/2001 | EP1078687A1 Polyoxometallate supported catalysis |
| 02/28/2001 | EP1078669A1 Process and crystallizer for purifying materials or mixtures thereof |
| 02/28/2001 | EP1077919A1 New compounds, their preparation and use |
| 02/28/2001 | EP1077911A1 Method for orthometalation of a carbocyclic aromatic derivative bearing at least an electron donor group |
| 02/28/2001 | CN1285815A Method for hydrogenating benzene polycarboxylic acids or derivatives thereof by using catalyst containing macropores |
| 02/28/2001 | CN1285814A Method and devices for separating catalyst from oxidation mixtures containing dibasic acids |
| 02/28/2001 | CN1285341A Palladium-carbon catalyst on-line regeneration method for terephthalic acid production apparatus |
| 02/28/2001 | CN1285240A Multi-metal axide supported catalyst |
| 02/28/2001 | CN1062550C Process for production of unsaturated aldehyde and unsaturated carboxylic acid |
| 02/27/2001 | US6194610 Contacting gaseous feed comprising ethane or ethylene and oxygen with catalyst comprising molybdenum, palladium and elements selected from of cr, mn, nb, ta, ti, v, te, b, al, ga, in, pt, zn, cd, bi, ce, co, rh, ir, cu, ag, au, fe, ru |
| 02/27/2001 | US6194609 Crystallization in a plate heat exchanger |
| 02/27/2001 | US6194608 Mixture of alkali metal salts of hydroxynaphthalenecarboxylic acids is adsorbed to nonionic porous synthetic adsorbent and treated with water or water and water-soluble organic solvent to purify and separate hydroxynaphthalenecarboxylic acids |