| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 04/22/2009 | CN101415667A Method of drying aromatic carboxylic acid and process for producing dry aromatic carboxylic acid |
| 04/22/2009 | CN101412670A Method for synthesizing loxoprofen sodium |
| 04/22/2009 | CN101412669A Method for producing lactic acid by hydrothermal degradation of biomass wastes |
| 04/22/2009 | CN101412668A 3-acryloyl chloride derivative and preparation thereof |
| 04/22/2009 | CN101412658A Method for saponification and acidolysis of hydrogenated castor oil by using high concentration acid and alkali |
| 04/22/2009 | CN101411997A Single teeth syn-dicarbonyl rhodium-triphenylphosphine complex catalyst for carbonyl group combined to acetic acid as well as preparation method and use thereof |
| 04/22/2009 | CN100480232C L-(-)-moprolol l-(+)-tartrate |
| 04/22/2009 | CN100480228C Method of separating acetic acid and t-butyl acetate by azeotropic distillation and water washing combined method |
| 04/22/2009 | CN100480227C Continuous co-production method for high concentration formic acid and high pure sodium hexametaphosphate |
| 04/22/2009 | CN100479922C Process for the removal of corrosion metals from carbonylation catalyst solutions |
| 04/21/2009 | US7521029 Catalytic oxidation, hydration, dehydration, ammoxidation carbonylation, nitration and alkylation; pressure reduction space is formed by a chamber housing the check valve arrangement; bundle of contact tubes, gas intake hood, supply pipe; withstands combustion and detonation |
| 04/21/2009 | US7520964 Method for the rectifying separation of fluids containing (meth)acryl monomers |
| 04/21/2009 | CA2398994C Low temperature purification of naphthalene dicarboxylic acids |
| 04/16/2009 | WO2009048553A2 Process for the ammoxidation or oxidation of propane and isobutane |
| 04/16/2009 | WO2009048509A1 Method and apparatus for making acetic acid with improved productivity |
| 04/16/2009 | WO2009047447A1 Method for the synthesis of a symmetrical alpha-omega-difunctional hydrocarbon compound from an omega-octenoic aldehyde |
| 04/16/2009 | WO2009047446A2 Method for the coproduction of methyl 7-oxoheptanoate and undecylenic acid from ricinoleic acid |
| 04/16/2009 | WO2009047445A1 Method for the synthesis of omega-unsaturated fatty acids |
| 04/16/2009 | WO2009047444A1 Methods for the synthesis of fatty diacids by the metathesis of unsaturated diacids obtained by fermentation of natural fatty acids |
| 04/16/2009 | WO2008099413A3 High purity (-) hydroxycitric acid metal salt derivatives and method of preparation of the same |
| 04/16/2009 | WO2007120554A3 Process for the reduction of aldehyde concentration in a target stream |
| 04/16/2009 | WO2007030452A3 Methods and apparatus for producing lower alkyl esters |
| 04/16/2009 | US20090099389 Via methanol carbonylation using rhodium or iridium catalyst with methyl iodide promoter, treating the light ends residue stream to separate a portion of the acetic acid from the residue stream and reduce the amount of acid that is recycled to the reaction system |
| 04/16/2009 | US20090099388 Recovery of aromatic dicarboxylic acids from waste polyester resin in the presence of a polyamide |
| 04/16/2009 | US20090099379 Cold polar solvent precipitation of long chain polyunsaturated fatty acids; or eliminating low temperature haze formation |
| 04/16/2009 | CA2702069A1 Method and apparatus for making acetic acid with improved productivity |
| 04/15/2009 | EP2046712A1 Removing permanganate-reducing impurities from acetic acid |
| 04/15/2009 | EP2046711A2 Preparation of acetic acid |
| 04/15/2009 | EP2046710A1 Process for alkaline hydrolysis of carboxylic acid derivatives to carboxylic acids |
| 04/15/2009 | EP2046709A1 A process for producing succinic acid |
| 04/15/2009 | EP2046706A1 Process for preparing isopropanol and 2-butanol from the corresponding alkanes |
| 04/15/2009 | EP1945600B1 Method for carrying out in a stable manner a process for continuously producing acrolein or acrylic acid or the mixture thereof from propane |
| 04/15/2009 | EP1912735B1 Process for producing catalyst bodies whose active mass is a mixed oxide |
| 04/15/2009 | EP1385816B1 Method for purifying an organic solvent for the purpose of absorption of maleic acid anhydride |
| 04/15/2009 | CN101410365A Process for producing carboxylic acid |
| 04/15/2009 | CN101410360A Method for producing methacrolein and/or methacrylic acid |
| 04/15/2009 | CN101410173A Oxidation system with internal secondary reactor |
| 04/15/2009 | CN101407457A Carboxyl substituted chalcone derivative, preparation and use |
| 04/15/2009 | CN101407456A Effective ingredient having beta-secretase inhibition effect in Homalonema occulta |
| 04/15/2009 | CN101407455A Preparation of 4,4'-stilbenedicarboxylic acid |
| 04/15/2009 | CN101407454A Process for preparing citrate salt from mother liquor for citric acid production |
| 04/15/2009 | CN101407453A A process for resolving, optionally substituted, mandelic acids by salt formation with a chiral base cyclic amide |
| 04/15/2009 | CN100478348C Method of separating and concentrating iridoid glycosides and crocin in cape jasmine fruit |
| 04/15/2009 | CN100478322C Process of extracting omega-3 polyunsaturated fatty acid from turtle oil |
| 04/15/2009 | CN100478321C Process for producing aliphatic dicarboxylic acid compound |
| 04/14/2009 | US7518022 High-quality; suitable as a raw material for cosmetics; good retention of liquidity and is unlikely to become cloudy on change of temperature |
| 04/14/2009 | US7518016 Gas phase partial oxidation of at least one organic compound over a catalyst bed, in which, in order to counteract the deactivation of the catalyst bed, the working pressure in the gas phase is increased during time operation; producing acrolein and/or acrylic acid from propylene |
| 04/14/2009 | US7518015 Reaction gas mixture comprising compounds such as propylene, and oxygen is conducted through the fixed catalyst bed and heat of reaction is removed by indirect heat exchange with a fluid heat carrier conducted outside the reaction chamber to produce acrolein and/or acrylic acid |
| 04/14/2009 | CA2595907C Creatine hydroxycitric acid salts and methods for their production and use in individuals |
| 04/14/2009 | CA2437256C Improved method for the manufacture of acrylic acid |
| 04/09/2009 | WO2009045637A2 Methods for the synthesis of acrylic acid and derivatives from fumaric acid |
| 04/09/2009 | WO2009045253A1 Methyl acetate purification and carbonylation |
| 04/09/2009 | WO2009045016A2 Method for separating and refining high purity 2,6-naphthalene dicarboxylic acid using crystallization |
| 04/09/2009 | WO2009044081A1 Process for manufacturing acrolein from glycerol |
| 04/09/2009 | WO2009044051A1 Method for the reactive vaporization of glycerol |
| 04/09/2009 | US20090093648 Soapstock treatment |
| 04/09/2009 | US20090093638 Allylic Oxidations Catalyzed by Dirhodium Catalysts under Aqueous Conditions |
| 04/09/2009 | CA2701713A1 Hydrocortisone derivatives and use thereof for therapeutic or cosmetic indications |
| 04/09/2009 | CA2696018A1 Methods for the synthesis of olefins and derivatives |
| 04/08/2009 | EP2043992A2 Elastomer blends of polyesters and copolyetheresters derived from polyethylene terephthalate, method of manufacture, and articles therefrom |
| 04/08/2009 | CN101405251A Process for production of 5-phenylisophthalic acid |
| 04/08/2009 | CN101405250A Process for the production of acetic acid |
| 04/08/2009 | CN101402565A Halogenated 2-(a-hydroxyl pentyl) benzoate, production method and uses thereof |
| 04/08/2009 | CN101402564A Dissolution processing method for CTA draff in PTA production |
| 04/08/2009 | CN101402563A Steam stripping processing method for CTA draff in PTA production |
| 04/08/2009 | CN101402561A Racemization method for L-naproxen |
| 04/08/2009 | CN101402560A Production process for separating and purifying naproxen with crystallization |
| 04/08/2009 | CN101402559A Purification method for D, L-naproxen |
| 04/08/2009 | CN101402558A Method for separating and purifying alpha-linolenic acid from cold pressed flax seed oil |
| 04/08/2009 | CN101402557A Process for preparing sorbic acid potassium salt |
| 04/08/2009 | CN101402045A Catalyst for synthesis of propionic acid with ethyl alcohol carbonylation method |
| 04/08/2009 | CN100475766C Trimellitic acid production method by stagewise catalytic oxidation |
| 04/08/2009 | CN100475765C Preparation technique for dibromochrysanthemic acid |
| 04/08/2009 | CN100475763C Method for catalytic oxidation of 1,2-cyclopentanediol to glutaric acid |
| 04/08/2009 | CN100475325C Intelligent control method of PTA particle diameter in fine terephthalic acid production device |
| 04/07/2009 | US7514581 Method for purifying and producing acrylic acid |
| 04/07/2009 | US7514576 Process for the separation of alkyl branched fatty acids from a fatty acid mixture |
| 04/07/2009 | CA2447803C Synthesis of 4-phenylbutyric acid |
| 04/07/2009 | CA2344451C Process for the manufacture of quaternary carboxylic acids |
| 04/07/2009 | CA2343962C Process for preparing carboxylic acids |
| 04/02/2009 | WO2009042853A2 Fluorinated oxy-carboxylic acids, derivatives, and methods of preparation |
| 04/02/2009 | WO2009042078A1 Method and apparatus for making acetic acid with improved purification |
| 04/02/2009 | WO2009040398A1 Method for recovering fluorocarboxylic acids |
| 04/02/2009 | WO2009040246A1 Improved vaporisation in oxidation to phthalic anhydride |
| 04/02/2009 | WO2009040245A1 Improved mixing in oxidation to phthalic anhydride |
| 04/02/2009 | WO2009040054A1 Method for the production of optically active alpha alkyl carbonyl compounds |
| 04/02/2009 | WO2009012157A3 Anti-viral properties of zosteric acid and related molecules |
| 04/02/2009 | US20090088588 Organocatalysts and methods of use in chemical synthesis |
| 04/02/2009 | US20090088587 Method and apparatus for making acetic acid with improved purification |
| 04/02/2009 | US20090088586 Catalyst and Method For Preparing Aromatic Carboxylic Acids |
| 04/02/2009 | US20090088585 Process and Catalyst for Oxidizing Aromatic Compounds |
| 04/02/2009 | US20090088316 Method for regenerating catalyst |
| 04/02/2009 | US20090084667 Process for manufacturing high purity methacrylic acid |
| 04/02/2009 | CA2699762A1 Method and apparatus for making acetic acid with improved purification |
| 04/01/2009 | EP1487575B2 Method for the production of a catalyst containing vanadium, phosphorus, and oxygen |
| 04/01/2009 | EP1440964B1 Process for production of (meth)acrylic compounds and method of distillation |
| 04/01/2009 | CN101400638A Method for making carboxylic acids |
| 04/01/2009 | CN101400637A Process for production of adamantyl (mono- or poly-)acetate, and process for production of adamantyl (mono- or poly-)ethanol using the same |
| 04/01/2009 | CN101397246A Method for preparing 2,3-dialkyl succinic acid and ester compounds thereof |
| 04/01/2009 | CN101397245A Method for purifying perflurooctanoic acid |