| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 02/28/2008 | WO2008023040A2 Acrylic acid based on renewable raw materials, water-absorbing polymer structures, and method for the production thereof by means of dehydration |
| 02/28/2008 | WO2008023039A1 Process for preparing acrylic acid purified by crystallization from hydroxypropionic acid and apparatus therefor |
| 02/28/2008 | WO2008022911A1 Catalysts from vpo precursors having a defined particle size distribution, production and use thereof |
| 02/28/2008 | WO2008007002A3 Membrane catalyst for synthesizing acrylic acid from glycerol |
| 02/28/2008 | US20080051601 Preparation of acetic acid |
| 02/28/2008 | US20080051600 Process for producing trans-1, 4-cyclohexanedicarboxylic acid |
| 02/28/2008 | US20080051593 Process of Making Alkyl Esters of Free Fatty Acids |
| 02/28/2008 | DE19635722B4 Organisches Blei-, Magnesium- und Niobionen enthaltendes Sol (PMN-Sol) sowie Verfahren zur Herstellung dünner keramischer Schichten Organic lead, magnesium and niobium ion containing sol (PMN-Sol) and processes for preparing thin ceramic layers |
| 02/28/2008 | CA2659865A1 Process for the preparation of sodium salt of ibuprofen of different particle sizes |
| 02/27/2008 | EP1890992A2 An enrichment process using compounds useful in a polyester process |
| 02/27/2008 | EP1890991A1 Optimized liquid-phase oxidation |
| 02/27/2008 | EP1890990A1 Method for making carboxylic acids |
| 02/27/2008 | EP1890813A1 Catalyst and method for producing phthalic anhydride |
| 02/27/2008 | EP1890806A1 Method for preforming oxidation catalysts |
| 02/27/2008 | EP1463706B1 Process for production of 3,3-dimethyl-2-formylcyclopropanecarboxylic acid derivatives |
| 02/27/2008 | EP1317409B1 Method for the purification of an alpha-hydroxy acid on an industrial scale |
| 02/27/2008 | EP1268385B1 Method for producing aliphatic carboxylic acids from aldehydes |
| 02/27/2008 | CN201028958Y Benzene anhydride refrigerating device gas-liquid separator |
| 02/27/2008 | CN101133013A Process for removing methacrolein from liquid phase comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component |
| 02/27/2008 | CN101133012A Process for removing methacrylic acid from liquid phase comprising acrylic acid as a main constituent and target product, and methacrylic acid as a secondary component |
| 02/27/2008 | CN101133011A Process for the manufacture of substituted propionic acids |
| 02/27/2008 | CN101133010A Process and intermediate compounds useful in the preparation of statins |
| 02/27/2008 | CN101130497A Method for dewatering raw material of acetic acid used in preparation of sec-butyl acetate |
| 02/27/2008 | CN101130494A Method for recycling p-benzene dicarboxylic acid from coloured p-benzene dicarboxylic acid |
| 02/27/2008 | CN101130493A Improved method for producing prohexadione |
| 02/27/2008 | CN101130492A Method for purifying calcium gluconate solution |
| 02/27/2008 | CN101130491A Oligomer having fatty acid synthase restraining activity and uses thereof |
| 02/27/2008 | CN101130490A Method for preparing cobaltous acetate solution |
| 02/27/2008 | CN101130482A Method and equipment for improving technique of methyl acetate hydrolyzation |
| 02/27/2008 | CN100371314C 2-butyl -3-(4 -[3(dibutylamino) propoxy]benzoyl) -5-nitro -benzofuran hydrochloride and preparation thereof |
| 02/27/2008 | CN100371312C Controlled release type butyric acid, its preparation method and use |
| 02/27/2008 | CN100371310C Method for separating ethyl ether, ethyl alcohol and acid water by combining rectifying and azeotropic distilling |
| 02/27/2008 | CN100371074C Novel catalytic formulation and its preparation method |
| 02/26/2008 | CA2224818C A process for the preparation of cyclopropane carboxylic acids and intermediates therefor |
| 02/21/2008 | WO2008021054A2 Method for the preparation of organic acids via oxidization using nitric acid |
| 02/21/2008 | WO2008019582A1 Supported pd/c catalyst and the preparation methodthereof |
| 02/21/2008 | WO2008019468A1 Process for obtaining an organic salt or organic acid from an aqueous sugar stream |
| 02/21/2008 | WO2007150027A3 System and method for removing a dissolved substance from a solution |
| 02/21/2008 | WO2007133976A3 Process for the production of aromatic carboxylic acids in water |
| 02/21/2008 | US20080045748 Process for Producing (Meth)Acrolein or (Meth)Acrylic Acid |
| 02/21/2008 | US20080045731 Branched Biodiesels |
| 02/21/2008 | US20080045594 Use of at Least One Conjugated Triene-Containing Fatty Acid for Preparing a Medicine for Treating Inflammation |
| 02/21/2008 | CA2661531A1 Method of obtaining an organic salt or acid from an aqueous sugar stream |
| 02/21/2008 | CA2660389A1 Method for the preparation of organic acids via oxidization using nitric acid |
| 02/20/2008 | EP1889657A2 Multi-metal oxide catalyst and method for producing unsaturated aldehydes and/or carboxylic acids |
| 02/20/2008 | EP1888503A1 Methods for producing alkyl(meth)acrylates |
| 02/20/2008 | EP1888501A1 An enriched terephthalic acid composition |
| 02/20/2008 | EP1888499A1 A process for the dynamic resolution of (substituted) (r) - or (s) -mandelic acid |
| 02/20/2008 | EP1888498A1 A process to produce an enrichment feed |
| 02/20/2008 | EP1888497A1 A process to produce an enriched composition through the use of a catalyst removal zone and an enrichment zone |
| 02/20/2008 | EP1888496A2 Process for production of esters from olefin-containing hydrocarbon streams and vegetable or animal oils |
| 02/20/2008 | EP1888493A2 Process for the conversion of synthesis gas to oxygenate |
| 02/20/2008 | EP1888232A2 Novel phosphorus addition process for improvement of catalysts suitable for maleic anhydride production |
| 02/20/2008 | EP1888229A1 Multi-layered catalyst for producing phthalic anhydride |
| 02/20/2008 | EP1140765B2 A production method of aromatic carboxylic acids |
| 02/20/2008 | CN101128415A Method of producing unsaturated aldehyde and/or unsaturated acid |
| 02/20/2008 | CN101125813A Method for synthesizing allyl cyclohexoxyacetate |
| 02/20/2008 | CN101125812A Method for producing (methyl) propenoic acid and (methyl) acrylate |
| 02/20/2008 | CN101125811A Method for synthesizing tetrapion by hydrogen peroxide solution method |
| 02/20/2008 | CN101125810A Method for preparing isooctanoic acid |
| 02/20/2008 | CN101125809A Solvent-free heating-free method for synthesizing potassium diformate |
| 02/20/2008 | CN100370167C Method and device for feeding polymerization liquid |
| 02/20/2008 | CN100369883C Separation method of o-chlorobenzoic acid and p-chlorobenzoic acid mixture |
| 02/20/2008 | CN100369881C High-content 9,11 conjugated linoleic acid composition and preparation method thereof |
| 02/20/2008 | CN100369880C Process for the production of carboxylic acids |
| 02/19/2008 | US7332628 feeding carbon monoxide and fluorine to a reactor and allowing carbon monoxide to react with fluorine under the conditions of a reactor internal pressure of less than atmospheric pressure; temperature rise inside the reactor is inhibited |
| 02/19/2008 | US7332626 Subjecting raw material of (meth)acrylic acid to a reaction of catalytic gas phase oxidation, a step of absorbing (meth)acrylic acid, and circulating part of a gas discharged as a recycle gas to a reactor and discarding the remainder of the discharged gas as waste gas to to the out side of system |
| 02/19/2008 | US7332625 passing a gas mixture including propane, water, vapor, and optionally an inert gas and/or molecular oxygen, on a mixed oxide catalyst comprising molybdenum, vandadium and niobium |
| 02/19/2008 | US7332624 Method for production of acrylic acid |
| 02/19/2008 | US7332139 By reducing width of the reaction spaces, the ratio of the surface to the volume of the reaction spaces increases. As a result, problems arising from the limited heat transfer within gases are decreased |
| 02/19/2008 | US7332085 Method for the purification of an α-hydroxy acid on an industrial scale |
| 02/19/2008 | US7331354 Cleaning of tray columns which have been used for rectificatively treating liquids comprising (meth)acrylic acid and/or esters thereof |
| 02/19/2008 | CA2434894C Method for manufacturing alkanedicarboxylic acid |
| 02/14/2008 | WO2008018823A1 A process for the preparation of optically active cyclopropylamines |
| 02/14/2008 | WO2008018520A1 Method for producing optically active hydroxycarboxylic acid derivative or salt thereof |
| 02/14/2008 | WO2008018195A1 Polymer having bis(diphenylphosphino)binaphthyl group |
| 02/14/2008 | WO2008017342A1 Catalytic oxidation of terpenes using noble metal catalysts |
| 02/14/2008 | US20080039653 Process for Producing Adipic Acid |
| 02/14/2008 | US20080039652 Integrated Process for Acetic Acid and Methanol |
| 02/14/2008 | US20080039650 Versatile oxidation byproduct purge process |
| 02/14/2008 | US20080039649 Versatile oxidation byproduct purge process |
| 02/14/2008 | US20080039648 Producction of terephthalic acid, separation of oxidation byproducts into benzoic acid and non-benzoic acid oxidation byproducts; polyethylene terephthalate production; waste treatment |
| 02/14/2008 | DE102006037447A1 Katalytische Oxidation von Terpenen mit Edelmetallkatalysatoren Catalytic oxidation of terpenes with noble metal catalysts |
| 02/14/2008 | CA2659091A1 A process for the preparation of optically active cyclopropylamines |
| 02/13/2008 | EP1885823A2 Production of biodiesel from balanites aegyptiaca |
| 02/13/2008 | EP1885681A2 A process to produce a post catalyst removal composition |
| 02/13/2008 | EP1885680A1 Process for the preparation of adamantane derivatives |
| 02/13/2008 | EP1748975B1 Method for the production of optically active 3-alkyl carboxylic acids and the intermediate products thereof |
| 02/13/2008 | EP1708984A4 Recovery of organic acids |
| 02/13/2008 | EP1590313B1 A low water methanol carbonylation process for high acetic acid production and for water balance control |
| 02/13/2008 | EP1273330B1 Sublimation purifying method and apparatus |
| 02/13/2008 | CN101124192A Process and apparatus for the efficient oxidation of alkyl aromatic compounds |
| 02/13/2008 | CN101124191A Production method of acetic acid |
| 02/13/2008 | CN101121655A Technique for purifying crude terephthalic acid |
| 02/13/2008 | CN101121654A Supercritical CO2 extraction separation purification method for silkworm chrysalis alpha-linolenic acid |
| 02/13/2008 | CN101121652A Preparation method of intermediate for preparing eplerenone |
| 02/13/2008 | CN100368375C 3- alkoxy -4-carbalkoxyphenylacetate and 3-alkoxy-4-carbalkoxyphenylacetic acid synthesis method |
| 02/13/2008 | CN100368373C Carboxyl substituted resveratrol analog compound and its preparation method |
| 02/13/2008 | CN100368372C Purification of a monomer by extraction with a phase-separating agent and crystallisation |
| 02/13/2008 | CN100368371C Method for preparing calcium formate |