| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 10/03/2012 | CN101633616B Preparation method and medicinal application of tanshinol |
| 10/03/2012 | CN101607883B Technique for producing zinc stearate by dry method and device |
| 10/03/2012 | CN101607881B Dry production technique and device of calcium stearate |
| 10/03/2012 | CN101565369B Method for preparing 3-bromine-5-trifluoromethylbenzoic acid |
| 10/03/2012 | CN101429109B Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system |
| 10/03/2012 | CN101312935B Method for safely carrying out gas phase partial oxidation |
| 10/03/2012 | CN101273005B Improved process for the production of derivatives of saturated carboxylic acids |
| 10/03/2012 | CN101269333B Method for preparing unsaturated aldehyde and/or unsaturated carboxylic acid |
| 10/02/2012 | US8279435 Nanostructured metal-polyaniline composites and applications thereof |
| 10/02/2012 | US8278467 Process and intermediate compounds useful in the preparation of statins |
| 10/02/2012 | US8278354 Method for increasing ruminant fertility |
| 10/02/2012 | US8277860 Method of stabilizing 1,4-dihydroxy-2-naphthoic acid |
| 09/27/2012 | WO2012129037A1 Process for preparing carboxylic acids |
| 09/27/2012 | WO2012126088A1 Method for the synthesis of dha |
| 09/27/2012 | WO2012103325A3 A method of purifying a dicarboxylic acid compound |
| 09/27/2012 | US20120245385 Reactive distillation process and plant for obtaining acetic acid and alcohol from the hydrolysis of methyl acetate |
| 09/27/2012 | US20120245383 Fluoroolefin monomers and copolymers thereof |
| 09/27/2012 | US20120245382 Producing acetaldehyde and/or acetic acid from bioethanol |
| 09/27/2012 | US20120245366 Novel arylated camphenes, processes for their preparation and uses thereof |
| 09/27/2012 | US20120240457 Method of production of fuels from biomass, from low quality coals and from wastes, residues and sludges from sewage treatment plants |
| 09/27/2012 | DE102011015150A1 Syntese von alpha, omega-Dicarbonsäuren und deren Estern aus ungesättigten Fettsäurederivaten Syntese of alpha, omega-dicarboxylic acids and esters thereof from unsaturated fatty acid derivatives |
| 09/27/2012 | CA2812126A1 Method for the synthesis of dha |
| 09/26/2012 | EP2502899A1 Synthesis of alpha, omega-dicarboxylic acids and their esters from unsaturated fatty acid derivatives |
| 09/26/2012 | EP2502895A1 Process for producing acrylic acid |
| 09/26/2012 | EP2501472A1 Multilayer catalyst for producing carboxylic acids and/or carboxylic acid anhydrides with vanadium antimonate in at least one catalyst layer, and method for producing phthalic acid anhydride with a low hot-spot temperature |
| 09/26/2012 | CN202446850U Hydrogen chloride tail gas recovering and purifying system in acetyl chloride production |
| 09/26/2012 | CN102690236A Four types of sulfuric acid nepresol organic drug eutectics and preparation method thereof |
| 09/26/2012 | CN102690196A Preparation and purification method of 3,4,5-trimethoxybenzoic acid |
| 09/26/2012 | CN102690195A Para-hydroxybenzoic acid continuous production technique by liquid-phase method |
| 09/26/2012 | CN102690194A Preparation method of 3-cyclopropylmethoxy-4-difluoromethoxy-benzoic acid |
| 09/26/2012 | CN102690193A Preparation technology of tanshinol using spray counterflow extraction method |
| 09/26/2012 | CN102690192A Bismuth citrate synthesizing method |
| 09/26/2012 | CN102690191A Method for producing calcium lactate by taking duck egg shell as raw material |
| 09/26/2012 | CN102690190A Method for extracting kolavenic acid from polyalthia longifolia var.prndulla R.Br. |
| 09/26/2012 | CN102690189A Method for extracting and separating succinic acid from succinic acid fermentation solution or succinic acid crystallization mother solution |
| 09/26/2012 | CN102690188A Catalytic oxidation of tetrahydrofuran by several natural amino acid transition metal complexes |
| 09/26/2012 | CN102690187A Stabilizer production system |
| 09/26/2012 | CN102690186A Methyl acetate hydrolysis partition reaction rectification column and operating method thereof |
| 09/26/2012 | CN102690185A Reactive distillation process and plant for obtaining acetic acid and alcohol from the hydrolysis of methyl acetate |
| 09/26/2012 | CN102690184A Method for synthesizing alpha-hydroxycarboxylic acid metallic soap by hydrolysis of alpha-halogenated carboxylic acid |
| 09/26/2012 | CN102690183A Synthesis of alpha, omega-dicarboxylic acids and their esters from unsaturated fatty acid derivatives |
| 09/26/2012 | CN102690166A Preparation methods of 2, 4, 5-trifluoro-benzyl chloride and 2, 4, 5-trifluoro-phenylacetic acid |
| 09/26/2012 | CN101906031B Method for preparing formic acid |
| 09/26/2012 | CN101759849B Zinc hydroxy acid complex catalyst for copolymerization of carbon dioxide and propylene oxide and preparation method |
| 09/26/2012 | CN101048340B Method for separating gas |
| 09/25/2012 | US8273916 Crystal comprising (2R)-2-propyloctanoic acid and amine |
| 09/25/2012 | US8273313 System for producing methacrylic acid |
| 09/25/2012 | CA2772366A1 Synthesis of alpha, omega-dicarboxylic acids and esters thereof from unsaturated fatty acid derivatives |
| 09/25/2012 | CA2556966C Process for producing acetic acid |
| 09/20/2012 | WO2012125218A1 Processes for producing terephthalic acid and terephthalic esters |
| 09/20/2012 | WO2012124956A2 Method and apparatus for continuously recovering (meth)acrylic acids |
| 09/20/2012 | WO2012122747A1 A method for preparing 2,5-dimethylphenylacetic acid |
| 09/20/2012 | WO2012082485A3 Eductor-based reactor and pump around loops for production of acetic acid |
| 09/20/2012 | US20120238777 Method and device for concentrating material solutions |
| 09/20/2012 | US20120238770 Glycidyl ester reduction in oil |
| 09/20/2012 | US20120238763 Process for producing 3-alkoxy-2-amino-6-fluorobicyclo [3.1.0] hexane-2,6-dicarboxylic acid derivative and intermediate thereof |
| 09/20/2012 | US20120238722 Process for the crystallization of succinic acid |
| 09/19/2012 | CN202440450U System for extracting sodium formate generated in pentaerythritol |
| 09/19/2012 | CN102686550A Method for producing polyoxyalkylene alkyl ether carboxylic acid and salt thereof |
| 09/19/2012 | CN102676143A Fatty alcohol-polyoxyethylene ether propionate surfactant and preparation method thereof and application thereof to tertiary recovery |
| 09/19/2012 | CN102675184A Salt form of tyrosine kinase inhibitor |
| 09/19/2012 | CN102675091A Preparation method of gallic acid by extraction from plant through separation |
| 09/19/2012 | CN102675090A Deep oxidation method and deep oxidation device in KPTA (Kunlun pure terephthalic acid) production |
| 09/19/2012 | CN102675089A Recycling method of waste polyester-cotton blended fabric |
| 09/19/2012 | CN102675088A Preparation method of alpha-hydroxy-cyclohexanecarboxylic acid |
| 09/19/2012 | CN102675087A Preparation method of novel alpha-ketovaline calcium |
| 09/19/2012 | CN102675086A Method for preparing levulinic acid from steam explosion produced straw short fiber by adding polymerization inhibitor and performing solid acid catalysis |
| 09/19/2012 | CN102675085A Synthetic method of 3,5-dimethyl benzoyl chloride |
| 09/19/2012 | CN102675084A A method for producing adipic acid by using waste polyurethane soles |
| 09/19/2012 | CN102675083A Preparation method of ferrous oxalate |
| 09/19/2012 | CN102675082A Preparation method of calcium propionate by egg shell |
| 09/19/2012 | CN102675081A Preparation method of high-purity acetic acid |
| 09/19/2012 | CN102675080A Preparation method of low-carbon chain symmetric anhydride |
| 09/19/2012 | CN102675079A Recovery method of aliphatic calcium alpha-keto acid |
| 09/19/2012 | CN102674643A Method for recovering ferric oxide from red mud by leaching-photocatalysis by oxalic acid |
| 09/19/2012 | CN102671712A Preparation method of novel solid superacid catalyst and application thereof in catalysis of microcrystalline cellulose for synthesis of levulinic acid |
| 09/19/2012 | CN102671424A Apparatus for replacing dispersion medium |
| 09/19/2012 | CN102671406A Basic annular plate |
| 09/19/2012 | CN102093207B Amorphous Sb-doped zinc tartrate micro-nano spheres and preparation method thereof |
| 09/19/2012 | CN101688015B Method for the chemical depolymerization of waste polyethylene terephthalate |
| 09/19/2012 | CN101622068B Process for regeneration of a catalyst bed deactivated in the context of a heterogeneously catalyzed partial dehydrogenation of a hydrocarbon |
| 09/19/2012 | CN101607891B Recrystallization production method for citric acid |
| 09/18/2012 | US8269033 Process for carbonylating phenylalkyl derivatives by means of carbon monoxide |
| 09/18/2012 | US8269028 Method and apparatus for refining biodiesel |
| 09/18/2012 | US8269027 Bipolar trans carotenoid salts and their uses |
| 09/18/2012 | US8268772 Depot preparations |
| 09/18/2012 | US8268131 Apparatus and method for recovery of acetic acid from an aqueous solution thereof |
| 09/18/2012 | CA2490986C Substituted 1,3-diphenylprop-2-en-1-one derivatives and preparation and uses thereof |
| 09/13/2012 | WO2012119629A1 Distillation column and method for distilling acrylic acid |
| 09/13/2012 | DE102011013561A1 Destillationskolonne und Verfahren zur Destillation von Acrylsäure Distillation column and process for the distillation of acrylic acid |
| 09/12/2012 | EP2497761A1 Process for the purification of anthraquinone derivatives |
| 09/12/2012 | EP2496537A2 Method and device for producing alkene derivatives |
| 09/12/2012 | CN202427210U Pipe sedimentation device for removing large solid particles from coarse dimer acid suspension |
| 09/12/2012 | CN102666465A Alkali metal cinnamate powder and method for preparation |
| 09/12/2012 | CN102659882A Method for extracting tartaric acid acetylisovaleryl tylosion |
| 09/12/2012 | CN102659609A Fenofibric acid salt, and preparation method, application and medicinal composition thereof |
| 09/12/2012 | CN102659607A Preparation method of quaternary ammonium ionic liquid |
| 09/12/2012 | CN102659588A Synthesis method of tert-butyl bromoacetate |
| 09/12/2012 | CN102659584A Chemical reaction system for producing oxalic acid diester as main products by using sodium formate as raw materials |
| 09/12/2012 | CN102659577A Preparation method of pamoic acid |