| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 02/17/2009 | US7491369 liquid-phase oxidation of para-xylene to produce terephthalic acid, then purification and separation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures |
| 02/17/2009 | CA2323906C Process for the preparation of bisphosphines |
| 02/17/2009 | CA2271090C Method for preparing a 4-hydroxybenzaldehyde and derivatives |
| 02/12/2009 | WO2009020725A1 Apparatus and method for producing biodiesel from fatty acid feedstock |
| 02/12/2009 | WO2009019395A2 Use of particle filters for limiting catalyst deactivation |
| 02/12/2009 | US20090043128 Catalyst and process for production of acrylic acid |
| 02/12/2009 | US20090043127 first step of producing (meth)acrolein as a main product from reaction material selected from propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether |
| 02/12/2009 | US20090043124 Avoiding high concentrations of pseudocumene at the beginning of the oxidation and limiting the degree of oxidation by gradually and simultaneously feeding pseudocumene and air or oxygen into an acetic acid/catalyst solution; catalyst consistency; by-product inhibition; industrial scale |
| 02/12/2009 | US20090043114 Flow reactors for chemical conversions with heterogeneous catalysts |
| 02/12/2009 | US20090042262 Preparation of Pregabalin and Related Compounds |
| 02/12/2009 | DE102008005346A1 Neuer synthetischer Kraftstoff und Verfahren zum Herstellen desselben Same new synthetic fuel and method of producing |
| 02/11/2009 | EP1346766B1 Process for producing oxygen-containing unsaturated compound |
| 02/11/2009 | CN101365673A Method for high-purity terephthalic acid preparation |
| 02/11/2009 | CN101362688A 2,2¡¯-bialkoxyl-4,4¡¯-biphenyl dicarboxylic acid and synthesis method thereof |
| 02/11/2009 | CN101362687A Method and equipment for preparing terephthalic acid by air oxidation of p-xylene |
| 02/11/2009 | CN101362686A 乙醛酸生产技术 Glyoxylic acid production technology |
| 02/11/2009 | CN101362685A Preparation technology for extracting DHA from walnut |
| 02/11/2009 | CN101362684A Solution containing vanadium oxalate and preparation method thereof |
| 02/11/2009 | CN101362683A Method for preparing super-clean and high-purity acetic acid and apparatus thereof |
| 02/11/2009 | CN101362682A Method for producing formic acid with joint production of sodium phosphate by peroxyphosphoric acid and sodium formate |
| 02/11/2009 | CN101362681A Process for production of iodine compounds |
| 02/11/2009 | CN101362103A Unidentate rhodium carbonyl complexes catalyst of carbonyl synthesis acetic acid, acetic anhydride |
| 02/11/2009 | CN100460379C Method of synthesizing 9-phenanthrene acid |
| 02/11/2009 | CN100460366C Cimicifuga rhizome organic acid extraction method and novel uses |
| 02/10/2009 | US7488847 Fluorinated adamantane and its derivatives |
| 02/10/2009 | US7488845 Method for the safe operation of a gas-phase partial oxidation |
| 02/10/2009 | US7488843 Oxidation process for aromatic compound |
| 02/10/2009 | US7488838 Antifogging agent for plastics |
| 02/10/2009 | CA2345448C Improved process for producing highly pure aromatic carboxylic acids |
| 02/10/2009 | CA2294098C Novel thyroid receptor ligands and method |
| 02/05/2009 | WO2009017909A2 System and process for production of fatty acids and wax alternatives from triglycerides |
| 02/05/2009 | WO2009017425A1 Use of ionic liquids for extraction or fractionation of lipids |
| 02/05/2009 | WO2009017074A1 Process for producing acrylic acid by two-stage catalytic vapor-phase oxidation |
| 02/05/2009 | WO2008153708A3 Reaction product of rhodium-catalyzed methanol carbonylation |
| 02/05/2009 | WO2008132128A3 Synthesis of a pharmaceutically active compound |
| 02/05/2009 | WO2007141662A8 Amidine-carboxylic acid complex, bridged polynuclear complex derived therefrom, production methods therefor, and use for preparing supported metal or metal oxide clusters |
| 02/05/2009 | US20090036710 distillation, separating lower boiling and high boiling point components |
| 02/05/2009 | US20090036707 Method for manufacturing catalyst for use in production of methacrylic acid |
| 02/05/2009 | US20090036703 Process for the production of acid chlorides |
| 02/05/2009 | DE10348674B4 Racemisierung von optisch aktiven 2-substituierten Phenylglycinestern Racemization of optically active 2-substituted Phenylglycinestern |
| 02/05/2009 | CA2677221A1 System and process for production of fatty acids and wax alternatives from triglycerides |
| 02/04/2009 | CN101360561A Conversion of a precatalyst to a catalytically active silver-vanadium oxide bronze |
| 02/04/2009 | CN101360553A Oxidation system employing internal structure for enhanced hydrodynamics |
| 02/04/2009 | CN101357886A 3-hydroxy benzoate preparation method |
| 02/04/2009 | CN101357885A Method for synthesizing sodium succinate through solid phase reaction |
| 02/04/2009 | CN101357884A Method for preparing symmetrical acid anhydride |
| 02/04/2009 | CN101357333A Pd/C catalyst for preparing alcohol ether carboxylate and production method and use thereof |
| 02/04/2009 | CN100457707C Enriching of alpha-linolenic acid by physical-method dissociating fat |
| 02/04/2009 | CN100457706C Technological process of synthesizing acetyl bromide, acetic acid, acetate from methane |
| 02/04/2009 | CN100457269C Methanol carbonylated primary aromatic amine N-pyridine ethyl derivative chelating rhodium catalyst |
| 02/04/2009 | CN100457264C Catalyst for methacrylic acid production and process for producing the same |
| 02/03/2009 | US7485749 Preparation of acetic acid |
| 02/03/2009 | US7485747 Oxidation of a dialkyl benzene by a two-stage process utilizing certain conditions |
| 02/03/2009 | US7485746 Staged countercurrent oxidation |
| 02/03/2009 | US7485738 dissolving crystals of xanthophyll or its fatty acid ester with ethylene glycol or propylene glycol, then adding a strong base to the solution for isomerization, diluting the solution with a mixture of water and ethanol, then separation and vacuum drying the crystals |
| 01/29/2009 | WO2009014471A2 Method for producing mechanically activated amorphous and amorphocrystalline compounds of gluconic acid calcium salt |
| 01/29/2009 | WO2009014235A1 Hydroxy acid amine salt, method for producing the same, and rubber composition containing the same |
| 01/29/2009 | WO2009014167A1 Novel compound, method for producing the same and method for producing fluoropolymer |
| 01/29/2009 | WO2009014098A1 Process for producing aromatic carboxylic acid |
| 01/29/2009 | WO2009013198A1 Process for obtaining a purified hydrofluoroalkane |
| 01/29/2009 | US20090030231 Asymmetrically hydrogenating a beta-keto acid/ester in the presence of a catalyst of a transition metal complex having a 2,3-bis(dialkylphosphino)pyrazine derivative as a ligand; ethyl (S)-3-hydroxy-3-phenylpropionate; stereospecific; catalyst selectivity;industrial scale; chemical intermediates |
| 01/29/2009 | US20090030230 Mixed oxide catalysts for the catalytic gas-phase oxidation of olefins and processes for producing them |
| 01/29/2009 | US20090030224 Process for producing metal oxide catalyst |
| 01/29/2009 | US20090030219 Heterogeneous acid-catalyzed process for biodiesel production from fatty acids |
| 01/29/2009 | US20090030214 Oxidation Process |
| 01/29/2009 | US20090030173 Novel fluorine-containing dicarboxylic acids and their novel polymer compounds |
| 01/29/2009 | US20090030165 Process for manufacturing reduced water content (meth) acrylic acid |
| 01/29/2009 | US20090029903 1,1'-(1,2-Ethynediyl)Bis-Benzene Derivatives As Ptp 1-B Inhibitors |
| 01/28/2009 | EP2018404A1 Process for driving gas blowers or fans in a solid-state polymerization process using steam from a terephthalic acid plant |
| 01/28/2009 | EP2018218A1 Mixing apparatus |
| 01/28/2009 | EP1412043B1 Azeotropic distillation of cyclic esters of hydroxy organic acids |
| 01/28/2009 | CN101353302A Preparation of naphthalenetetracarboxylic acid |
| 01/28/2009 | CN101353301A Synthetic process of rhodium caprylate dimer |
| 01/28/2009 | CN101353300A Method for preparing calcium stearate by geoceric acid one-step synthesis |
| 01/28/2009 | CN101352688A Catalyst for producing acroleic acid by lactic acid dewatering and reaction technique |
| 01/28/2009 | CN101352433A Formulation capable of effectively balancing blood pressure, blood fat and promoting cardio-cerebral arterial vascular softening, and preparation method thereof |
| 01/28/2009 | CN100455557C Preparation method of methylphenyl acetic acid |
| 01/27/2009 | US7482485 Method for extracting slurry |
| 01/27/2009 | US7482482 Optimized liquid-phase oxidation |
| 01/22/2009 | WO2009012157A2 Anti-viral properties of zosteric acid and related molecules |
| 01/22/2009 | WO2009010782A1 A process for the carbonylation of an ethylenically unsaturated compound and a catalyst system |
| 01/22/2009 | WO2009010435A2 Method for the chemical depolymerization of waste polyethylene terephthalate |
| 01/22/2009 | US20090023952 Palladium-containing catalyst, method for producing same, and method for producing alpha, beta-unsaturated carboxylic acid |
| 01/22/2009 | US20090023930 Processes and intermediates for the preparation of heterocyclic sulfonamide compounds |
| 01/22/2009 | US20090023916 Tetrazine-based bio-orthogonal coupling reagents and methods |
| 01/22/2009 | CA2691698A1 A process for the carbonylation of an ethylenically unsaturated compound and a catalyst system |
| 01/21/2009 | EP2017254A1 Method of crystallization |
| 01/21/2009 | EP2016040A1 Method for gas phase oxidation using a moderator layer |
| 01/21/2009 | EP2016039A1 Terphenyl derivatives for treatment of alzheimer' s disease |
| 01/21/2009 | EP2016038A1 Recovery of aromatic dicarboxylic acids from waste polyester resin in the presence of a polyamide |
| 01/21/2009 | CN101351494A Ethanolysis of PET to form DET and oxidation thereof |
| 01/21/2009 | CN101351437A Production of acid propionates |
| 01/21/2009 | CN101348807A Method for enrichment of n-3 polyunsaturated fatty acid glyceride from fish oil |
| 01/21/2009 | CN101348474A Method for preparing salvianolic acid B and tanshinol from Salvia miltiorrhiza stem |
| 01/21/2009 | CN101348431A Method for producing low lead light density granular calcium citrate |
| 01/21/2009 | CN101348430A Method for preparing acetylpropionic acid by solid superacid catalysis of stalk |
| 01/21/2009 | CN101348429A Method for extracting amber acid in fermentation liquor by cationic resin exchange |
| 01/21/2009 | CN101348428A Method for extracting amber acid in fermentation liquor by anion resin adsorption |
| 01/21/2009 | CN101348427A Simple synthetic method of isononanoyl chloride |
| 01/21/2009 | CN101348426A Preparation technique of cobalt decanoate by hybrid reaction of cobaltous carbonate and organic acid |