| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 05/07/2008 | CN101172942A Method for producing calcium acetate with egg shell |
| 05/07/2008 | CN101172941A Method for recycling acetic acid in dilute acetic acid |
| 05/07/2008 | CN101172940A Extractive agent for recycling acetic acid in dilute acetic acid |
| 05/07/2008 | CN101172939A Oxidation reactor for producing polybasic carboxylic acid |
| 05/07/2008 | CN101172938A Reactor for contact vapor-phase oxidation and production method for acrylic acid using it |
| 05/07/2008 | CN100386303C Method for eliminating sulfur dioxide in citrate solution enhanced by ultrasonic |
| 05/07/2008 | CN100386302C Method for extracting (methyl) acrylic acid aqueous solutior |
| 05/07/2008 | CN100386301C Convenient method for producing shikimic acid |
| 05/07/2008 | CN100386300C Method for preparing alpha-olefine acid by olefin oxidation |
| 05/06/2008 | US7368615 Catalyst comprising a cyclic imide compound and process for producing organic compounds using the catalyst |
| 05/06/2008 | US7368603 Mixing compound with ion exchanger; controlling temperature; removal supernatant |
| 05/06/2008 | US7368602 Contacting (meth)acrylic acid-containing gas obtained by gas phase catalytic oxidation in a tower and withdrawing the crude (meth)acrylic acid solution from an outlet positioned between a supply point for the gas and a supply point for absorbent on the tower; formation of Michael adducts is supressed |
| 05/06/2008 | US7368601 Stopping the distillation column; successively washing the column with water, an aqueous alkali solution, and an organic solvent; and restarting the column; monomer polymerization is prevented |
| 05/06/2008 | US7368599 Ethane oxidation catalyst and process utilising the catalyst |
| 05/06/2008 | US7368598 Process for converting methane to acetic acid |
| 05/06/2008 | US7368597 Carbonylation process using metal-polydentate ligand catalysts |
| 05/02/2008 | WO2008024820A3 Process for the preparation of sodium salt of ibuprofen of different particle sizes |
| 05/02/2008 | WO2007125096A8 Method for gas phase oxidation using a moderator layer |
| 05/01/2008 | US20080103335 Efficient acetaldehyde removal; redistilling overhead fraction to produce second overhead stream and performing multiple aqueous extractions |
| 05/01/2008 | US20080103333 Hydrogenation using metal catalyst supported on heat, acid, abrasion and attrition resistant, high surface area silicon carbide support |
| 05/01/2008 | US20080103332 Method of manufacturing pta oxidized catalyst with lower corrosion |
| 04/30/2008 | EP1915209A2 Catalyst for methacrolein oxidation and method for making and using same |
| 04/30/2008 | EP1397207B1 Tin promoted iridium catalyst for carbonylation of lower alkyl alcohols |
| 04/30/2008 | CN101168623A Method for inhibiting polymerization of (meth) acrylic acid and its esters using an inhibitor and a process for making a compound useful as such an inhibitor |
| 04/30/2008 | CN101168504A Method for separating sec-butyl acetate, acetic acid and heavy hydrocarbon |
| 04/30/2008 | CN101168503A Method for extracting and separating shikimic acid from star anise |
| 04/30/2008 | CN101168501A Technique for extracting and refining DHA enriched fatty acid from Crypthecodinium cohnii |
| 04/30/2008 | CN101168500A Method for preparing medicinal accessories sodium caprylate |
| 04/30/2008 | CN101168499A Synthesis method for aluminum carboxylate nucleater without acidic byproduct |
| 04/30/2008 | CN100384813C Process for preparing nateglinide and intermediates thereof |
| 04/30/2008 | CN100384808C Method and apparatus for refining materials containing components easy to polymerize |
| 04/30/2008 | CN100384807C Method for production of acrylic acid |
| 04/30/2008 | CN100384806C Method for preventing exhaust pipe from block |
| 04/30/2008 | CN100384805C Method for production of potassium diformate |
| 04/30/2008 | CN100384804C Production of aldehydes, carboxylic acids, and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide |
| 04/30/2008 | CN100384793C Production method and refinishing equipment of polymerizable matter |
| 04/30/2008 | CN100384792C Method of deuterization |
| 04/29/2008 | US7365228 Method for producing unsaturated fatty acids |
| 04/29/2008 | US7365219 Solid phase extraction method for obtaining high-purity unsaturated compounds or derivatives of said compounds |
| 04/24/2008 | WO2008048520A2 Methods of making organic compounds by metathesis and hydrocyanation |
| 04/24/2008 | WO2008048106A1 Method for the production of alpha-keto acids and esters thereof |
| 04/24/2008 | WO2008046840A1 Method of separating the acrylic acid from benzoic acid contained in a product gas mixture from a heterogeneously catalyzed gas phase partial oxidation of a c3-precursor compound of acrylic acid |
| 04/24/2008 | US20080097131 Synthesis of carbon-labeled perfluoroalkyl compounds |
| 04/24/2008 | US20080097124 Continuous process; methanol and carbon monoxide; methyl iodide, methyl acetate, and water; rhodium catalyst; adjusting amount of carbon monoxide and hydrogen in liquid phase of reaction system; inhibit precipitation of metal catalyst, generation of by-product; improve formation rate |
| 04/24/2008 | US20080097123 Process for separating acrylic acid and benzoic acid present in a product gas mixture of a partial heterogeneously catalyzed gas phase oxidation of a c3 precursor compound of acrylic acid |
| 04/24/2008 | US20080097120 depolymerization by chemical hydrolysis and separation of terephthalic acid and ethylene glycol; recycling /wastes/; suspension is in the presence of water steam to avoid the formation of terephthalaldehyde |
| 04/24/2008 | US20080097118 liquid phase oxidation of aromatic hydrocarbons para-xylene to produce aromatic carboxylic acid terephthalic acid; catalytic oxidation in solvent; performing a high efficiency heat exchange separation and purification from exothermic oxidation reaction |
| 04/24/2008 | US20080097114 Converting free fatty acids to triglycerides by reacting the feed with methanol; Esterification reaction, in the presence of acid ion exchange resin catalyst; triglycerides are converted to biodiesel by reacting with methanol by transesterification in the presence of and alkaline catalyst |
| 04/24/2008 | US20080097111 Chemical intermediates of byproduct-free 7-thio-3H-isobenzofuran-1-one derivatives and herbicidal 7-[(4,6-dimethoxy-pyrimidin-2-yl)thio]-3-methyl-3H-isobenzo-furan-1-one |
| 04/24/2008 | DE102006049939A1 Separating acrylic acid from a gas-phase oxidation product gas comprises separating acrylic acid from benzoic acid by crystallization |
| 04/23/2008 | EP1914270A1 Method for recovery of valuable ingredient from dyed polyester fiber |
| 04/23/2008 | EP1912928A2 Process for removal of benzoic acid from an oxidizer purge stream |
| 04/23/2008 | EP1912927A2 Process for removal of benzoic acid from an oxidizer purge stream |
| 04/23/2008 | EP1912926A2 Process for producing carboxylic acid |
| 04/23/2008 | EP1912739A1 Supported gold catalyst |
| 04/23/2008 | EP1912736A1 Complex metal oxide catalyst with high (meth)acrylic acid selectivity |
| 04/23/2008 | EP1912735A1 Process for producing catalyst mouldings whose active mass is a multi-element oxide |
| 04/23/2008 | EP1756030A4 Improved filtrate preparation process for terephthalic acid filtrate treatment |
| 04/23/2008 | EP1392636B1 Process for preparing carboxylic acids and derivatives thereof |
| 04/23/2008 | CN101166710A Process for rectificatively separating a liquid comprising acrylic acid and/or methacrylic acid |
| 04/23/2008 | CN101166709A Method for preparing tetracarboxylic acid |
| 04/23/2008 | CN101166572A Multi-layered catalyst for producing phthalic anhydride |
| 04/23/2008 | CN101165041A Method for synthesizing 4-methyl octoic acid |
| 04/23/2008 | CN101165040A Method for synthesizing 4-methyl nonanoic acid |
| 04/23/2008 | CN100383106C Process for refining rheinic acid |
| 04/23/2008 | CN100383105C Process for producing terephthalic acid |
| 04/23/2008 | CN100383104C Synthesis and purification process of (2-methyl)-3-chloropropionyl chloride |
| 04/23/2008 | CN100383103C 3,5-di (4-carboxy phenoxy) benzene carbonic acid-and its preparing method |
| 04/23/2008 | CN100382889C Composite-oxide catalyst and process for production of acrylic acid using said catalyst |
| 04/23/2008 | CN100382866C High capacity purification of thermally unstable compounds |
| 04/22/2008 | US7361784 Optimized liquid-phase oxidation |
| 04/22/2008 | CA2354619C Intermediates and process for producing fluorine-containing amino acid compound by using the same |
| 04/17/2008 | WO2008043445A1 Method for producing nanoscale, metal-organic framework compounds |
| 04/17/2008 | WO2008012249A3 Process for the long-term operation of a continuously operated heterogeneously catalyzed partial dehydrogenation of a hydrocarbon to be dehydrogenated |
| 04/17/2008 | WO2007092188A8 Integrated process for the production of acetic acid and vinyl acetate |
| 04/17/2008 | WO2007008888A3 Method of making aromatic dihydroxy diacid dihalides and precipitates resulting therefrom |
| 04/17/2008 | US20080091048 Method for the Purification of (Meth) Acrylic Acid |
| 04/17/2008 | US20080091047 Multi-stage glycolic acid crystallization |
| 04/17/2008 | US20080091046 Contacting an aliphatic alcohol with carbon monoxide in the absence of the halogens and in the presence of a mordenite catalyst which has been ion-exchanged or loaded with copper, nickel, iridium, rhodium or cobalt |
| 04/17/2008 | US20080091045 Novel method for the preparation of 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid |
| 04/17/2008 | US20080091039 Hydrogen peroxide treated basic copper carbonate catalyst of natural malachite mineral; selective hydrogenation of oils that contain unsaturated fatty acyl components; vegetable, animal or synthetic fat or oil; lubricants, metalworking fluids, transformer fluids, cosmetics, inks, releasing agents |
| 04/17/2008 | US20080091032 aldol reacting indole-3-pyruvic acid and oxalacetic acid/pyruvic acid and decarboxylating; for producing monatin for use in sweeteners and drugs |
| 04/17/2008 | US20080090907 Crystal Comprising (2R)-2-Propyloctanoic Acid and Amine |
| 04/17/2008 | DE102006048043A1 Verfahren zur Herstellung metallorganischer Gerüstverbindungen Process for the preparation of organometallic frameworks |
| 04/16/2008 | EP1911737A1 Process for preparing an organic acid or its derivatives using a homogeneous MC-Type catalyst an O2/CO2 mixture |
| 04/16/2008 | EP1911357A1 Metal soap for addition to food and process for production thereof |
| 04/16/2008 | EP1911074A2 Beta-diketiminate ligand sources and metal-containing compounds thereof, and systems and methods including same |
| 04/16/2008 | EP1910266A1 Process for preparing l- ( + ) -lactic acid |
| 04/16/2008 | EP1910265A1 Assembly for the treatment of a polymerizable material |
| 04/16/2008 | EP1910264A2 Aroma composition and method |
| 04/16/2008 | EP1740526A4 Method for recovering acrylic acid |
| 04/16/2008 | EP1622854B1 Carbonylation process using metal-tridentate ligand catalysts |
| 04/16/2008 | EP1556329A4 Composition and method for preventing fouling in (meth)acrylic acid processes |
| 04/16/2008 | CN101163668A Calcium bis [ (2s) - 3- [3-[ (2s) -3- (4-chloro-2-cyanophenoxy) -2- fluoropropoxy]phenyl ]-2-isopropoxypropionate] and intermediate thereof |
| 04/16/2008 | CN101163658A Process for the production of acetic acid |
| 04/16/2008 | CN101161628A Method for preparing gallic acid and pyrogallic acid synchronously by non-catalyzed hydrolysis of tannin-containing biomass in high-temperature liquid water medium |
| 04/16/2008 | CN101161627A Method for preparing hydroxyl conjugated linoleic acid by reduction in alcohol-water system |
| 04/16/2008 | CN101161626A Method for preparing phenylacetic acid by non-catalyzed hydrolysis of benzene acetonitrile in near-critical water medium |
| 04/16/2008 | CN101161625A Process for the reduction of sulfur, nitrogen and the production of useful oxygenates from hydrocarbon materials via one-pot selective oxidation |
| 04/16/2008 | CN100381416C Method for preparing acrylic acid |