| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 05/15/2001 | US6232352 Diverting synthesis gas (hydrogen, carbon monoxide, and carbon dioxide) from methanol synthesis loop to a carbon monoxide separator and reacting methanol with the carbon monoxide to make acetic acid |
| 05/15/2001 | US6231821 Process to separate rhodium from an organic mixture |
| 05/15/2001 | CA2034970C Carbonylation catalyst system |
| 05/12/2001 | CA2325707A1 Process for the production of acetic acid |
| 05/12/2001 | CA2325656A1 Process for the production of acetic acid |
| 05/10/2001 | WO2001032681A1 Process for producing phytosterols by saponification in an alcohol/water solvent |
| 05/10/2001 | WO2001032595A1 Method for producing compounds of the valproinic acid |
| 05/10/2001 | WO2001032594A1 Methanol plant retrofit for manufacture of acetic acid |
| 05/10/2001 | WO2001032563A1 Method for recovering fluorinated emulsifiers |
| 05/10/2001 | WO2001032301A1 Method for catalytic gas phase oxidation to (meth)acrolein and/or (meth)acrylic acid |
| 05/10/2001 | WO2001032300A1 Method for the production of fatty granules |
| 05/10/2001 | WO2001019908A3 Recovery of modifier compounds and polar organic compounds from a poly(arylene sulfide) recycle mixture |
| 05/10/2001 | WO2001017931A3 Regeneration of onium fluoride-hf adducts |
| 05/10/2001 | WO2001016067A3 A process for separation of crude naphthalene dicarboxylic acid using reverse osmosis |
| 05/10/2001 | DE19953832A1 Verfahren zur Herstellung von Ameisensäure A process for the preparation of formic acid |
| 05/10/2001 | DE19953285A1 Verfahren zur Rückgewinnung fluorierter Emulgatoren A process for the recovery of fluorinated emulsifiers |
| 05/10/2001 | DE19952964A1 Verfahren zur katalytischen Gasphasenoxidation zu (Meth)Acrolein und/oder (Meth)Acrylsäure A process for the catalytic gas-phase oxidation to (meth) acrolein and / or (meth) acrylic acid |
| 05/10/2001 | CA2387781A1 Method for recovering fluorinated emulsifiers |
| 05/09/2001 | EP1097917A1 Preparing method of alpha-ketocarboxylic acid derivatives |
| 05/09/2001 | EP1097916A2 Method for production of acrylic acid and apparatus for production of acrylic acid |
| 05/09/2001 | EP1097745A1 Reactor for catalytic gas phase oxidation |
| 05/09/2001 | EP1097742A1 Distillation process for easily polymerizable substance-containing solution |
| 05/09/2001 | EP1097741A2 Column treating process and apparatus therefor |
| 05/09/2001 | EP0951351B1 Use of a shell catalyst for producing acetic acid by gas phase oxidation of unsaturated c 4 hydrocarbons |
| 05/09/2001 | EP0918741B1 Method for purifying adipic acid by crystallization |
| 05/09/2001 | CN1294573A Recovery of acrylic acid from process or waste water streams |
| 05/09/2001 | CN1294569A 氧化方法 Oxidation method |
| 05/09/2001 | CN1294115A Process for preparing loxoprofen sodium |
| 05/09/2001 | CN1065522C Process for prepn. of 5-formylvaleric acid and 5-formylvalerate ester |
| 05/09/2001 | CN1065511C Prepn. for carbonyl fluoride |
| 05/08/2001 | US6229052 Utilizing supported diols and chelating bis(phosphorus) ligands covalently bonded to a support (crosslinked polystyrene resin) |
| 05/08/2001 | US6229046 Lactic acid processing methods arrangements and products |
| 05/08/2001 | US6229045 Carboxylation of primary aliphatic alcohols in alkaline solution via contacting with a catalyst comprising cobalt, copper, cerium, iron, zinc, and/or zirconium |
| 05/08/2001 | US6229040 Using free radical catalysts |
| 05/08/2001 | US6229031 Method for manufacturing rumen bypass feed supplements |
| 05/08/2001 | US6228798 Process for producing a vanadium phosphorus oxide catalyst |
| 05/08/2001 | US6228227 Separation of (meth)acrylic acid by rectification |
| 05/03/2001 | WO2001030736A2 Aromatic di-keto derivatives as glucose-6-phosphate translocase inhibitors |
| 05/03/2001 | DE19959066C1 Preparation of ortho-chloromethyl-benzoyl chloride derivatives from phthalide and thionyl chloride, for use as pesticide intermediate, using boron trifluoride dihydrate and quaternary ammonium catalysts |
| 05/03/2001 | DE10010771C1 Production of aliphatic carboxylic acid, e.g. n-butyric, 2-methylbutyric, n-heptanoic or isononanoic acid, by oxidizing corresponding aldehyde uses group 5-11 metal or compound as catalyst |
| 05/02/2001 | EP1095939A2 Process for the preparation of piperidinylaminomethyl trifluoromethyl cyclic ether compounds |
| 05/02/2001 | EP1095929A1 Crystal of 2-hydroxynaphthalene-3-carboxylic acid and process for the preparation thereof |
| 05/02/2001 | EP1095012A1 Novel salts of n-tert-butylhydroxylamine |
| 05/02/2001 | EP1095009A2 A process for the preparation of 4-carboxy- 5,8,11- tris(carboxymethyl)- 1-phenyl- 2-oxa- 5,8,11- triazatridecan- 13-oic acid |
| 05/02/2001 | EP1095007A1 Water-soluble zinc pyruvates or their hydrates, method for the production thereof and their use |
| 05/02/2001 | EP1095006A1 Derivatives of 1-oxyl-4-hydroxy-or 4-amino-2,2,6,6-tetramethylpiperidine as polymerization inhibitors for (meth) acrylate monomers |
| 05/02/2001 | EP1095005A1 Preparation of carboxylic compounds and their derivatives |
| 05/02/2001 | EP1095004A1 A process for the isolation of aromatic hydroxycarboxylic acids |
| 05/02/2001 | EP1094999A2 Production of organic compounds which are low in fluoride |
| 05/02/2001 | EP0778820B1 Neurotrophic and antiproliferative compounds |
| 05/02/2001 | CN1293675A Process for preparation of bisphosphines |
| 05/02/2001 | CN1293193A Preparation of piperidyl amino methyl trifluoro methyl cyclo other compounds |
| 05/02/2001 | CN1293184A Process and equipment for preparing aromatic carboxylicacid |
| 05/02/2001 | CN1293183A Process for preparing synthetic fatty acid from straight-run light diesel oil |
| 05/02/2001 | CN1065233C Method for inhibiting polymerization of (meth) acrylic acid and esters thereof |
| 05/01/2001 | US6225498 Removing high molecular weight organic iodides from non-aqueous organic media by contacting with silver or mercury exchanged cationic ion exchange substrate at temperature greater than 50 degrees celsius |
| 05/01/2001 | US6225475 Enhanced production of hydrocarbyl anhydrides |
| 05/01/2001 | US6224731 Apparatus and process for electrodialysis of salts |
| 04/26/2001 | WO2001028969A2 Improved method for producing symmetrical anhydrides |
| 04/26/2001 | WO2000043341A3 Method for producing acrolein by heterogeneous catalytic gas-phase partial oxidation of propene |
| 04/25/2001 | EP1094362A1 Method for producing silver salt of organic acid and photothermographic material utilizing the same |
| 04/25/2001 | EP1094054A1 Process for the separation and purification of lactic acid from a fermentation medium |
| 04/25/2001 | EP1094053A1 Method of preparing fluoroaromatic compounds |
| 04/25/2001 | EP1094052A2 Process for preparing trichloroacetic acid and apparatus for use in such process |
| 04/25/2001 | EP1093850A2 Packed column and polymerizable compound treating method using the same |
| 04/25/2001 | EP1093467A1 Process for selective oxidation of primary alcohols |
| 04/25/2001 | EP1093441A1 Method for recovering fluorinated alkanoic acids from waste waters |
| 04/25/2001 | CN1292471A Method for transmitting polymer |
| 04/25/2001 | CN1064973C Continuous process for production of functionalized olefins |
| 04/25/2001 | CN1064952C New substituted 2,2-dimethyl-omega-phenoxyalkanoic acids and esters, process for their preparation and pharmaceutical compositions containing them |
| 04/25/2001 | CN1064951C Method for refining long-chain bibasic acid |
| 04/25/2001 | CN1064950C Method and apparatus for recovering acetic from aqueous streams |
| 04/25/2001 | CN1064949C Process for producing aromatic carboxylic acid |
| 04/24/2001 | US6222070 Method for reducing EDA in acetic anhydride production |
| 04/24/2001 | US6222069 Method for purifying adipic acid in water |
| 04/24/2001 | US6222064 Fluorination with aminosulfur trifluorides |
| 04/24/2001 | US6222060 Reacting lactone compound with thionyl chloride; esterifying with alcohol; reacting with salt of thiosulfonic acid; chlorinating to prepare o-(carboalkoxy)phenylmethanesulfonyl chloride derivative |
| 04/24/2001 | US6222049 2-(ω-alkoxycarbonyl alkanoyl)-4-butanolide |
| 04/24/2001 | US6221901 Magnesium (-)hydroxycitrate, method of preparation, applications, and compositions in particular pharmaceutical containing same |
| 04/24/2001 | US6221639 Process for preparing optically pure(S)-3,4-dihydroxybutyric acid derivatives |
| 04/24/2001 | US6221225 Apparatus and process for electrodialysis of salts |
| 04/19/2001 | WO2001027142A1 Process for producing aspartame derivative, crystals thereof, novel production intermediates therefor and process for producing the intermediate |
| 04/19/2001 | WO2001027064A1 Continuous process for preparing lactic acid |
| 04/19/2001 | WO2001027063A1 A process for recovery of acid |
| 04/19/2001 | WO2001027062A2 Process and device for hydrolytically obtaining a carboxylic acid and alcohol from the corresponding carboxylate |
| 04/19/2001 | WO2001027058A1 Process for the simultaneous production of maleic anhydride and its hydrogenated derivatives |
| 04/19/2001 | CA2386859A1 Process for production of aspartame derivative, crystal thereof, novel production intermediate therefor, and process for production of intermediate thereof |
| 04/18/2001 | EP1092874A2 Method for transferring easily-polymerizable substance |
| 04/18/2001 | EP1092702A2 Method for preparing methacrylic acid |
| 04/18/2001 | EP1091924A1 Novel retinoids and use thereof |
| 04/18/2001 | EP1091923A1 Method for purifying acrylic acid or methacrylic acid by crystallization and distillation |
| 04/18/2001 | EP1091922A1 Method of purifying aromatic dicarboxylic acids |
| 04/18/2001 | EP1091921A1 Methods of separating catalyst in solution from a reaction mixture produced by oxidation of cyclohexane to adipic acid |
| 04/18/2001 | EP1091806A1 Method for producing shell catalysts for the catalytic vapor-phase oxidation of aromatic hydrocarbons and catalysts obtained in such a manner |
| 04/18/2001 | EP0897267A4 A process for the production of chromium(iii) salts of short chain fatty acids for use in animals feeds |
| 04/18/2001 | EP0861225B1 Hydroformylation process |
| 04/18/2001 | CN1292023A Purification of organic acid using anion exchange chromatography |
| 04/18/2001 | CN1291971A Method for separating and purifying adipic acid |
| 04/18/2001 | CN1064670C Terephthalic acid production using evaporative cooling |
| 04/18/2001 | CN1064669C Preparation of o-chloromethylbenzoyl chlorides |