| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 01/16/2013 | CN102874848A Method for recovering sodium bicarbonate and organic acid sodium salt from cyclohexanone waste alkali solution |
| 01/16/2013 | CN102872863A Carrier type catalyst and application of carrier type catalyst in low-pressure rosin hydrogenation |
| 01/16/2013 | CN102872856A Process for preparing a catalyst consisting of a support body and a catalytically active composition applied on the surface of the support body |
| 01/16/2013 | CN102872782A Bleaching tank for production of dicarboxylic acid |
| 01/16/2013 | CN101993052B Microreaction system for ammonium salt production and application |
| 01/16/2013 | CN101851156B Method for recovering fumaric acid from tiamulin production mother solution |
| 01/16/2013 | CN101823957B Method for synthesizing 2-carboxyl anthraquinone by using dichromic acid to oxidize 2-ethyl anthraquinone |
| 01/16/2013 | CN101735034B Method for preparing trifluoroacetyl chloride |
| 01/16/2013 | CN101184717B Method for producing glycolic acid |
| 01/16/2013 | CN101045684B Method of preparing 2-hydroxynaphthyl-3,6-diformic acid |
| 01/10/2013 | WO2013006594A1 Methods for the ozonolysis of organic compounds |
| 01/10/2013 | WO2013004577A1 Process for the preparation of formic acid by reacting carbon dioxide with hydrogen |
| 01/10/2013 | WO2012140276A3 Process for the preparation of 3-hydroxy-3-methylbutyric acid or its calcium salts |
| 01/10/2013 | WO2012103310A3 Process for reconditioning a gas from the ozonolysis of an unsaturated fatty acid |
| 01/10/2013 | WO2011100081A8 Processes utilizing switch condensers |
| 01/10/2013 | US20130012740 Method for Producing Difluoroacetyl Chloride |
| 01/10/2013 | US20130012739 Process for preparing formic acid by reacting carbon dioxide with hydrogen |
| 01/10/2013 | US20130012738 Method for recovery of acetic acid from an aqueous solution thereof |
| 01/10/2013 | CA2841049A1 Methods for the ozonolysis of organic compounds |
| 01/10/2013 | CA2838907A1 Process for the preparation of formic acid by reacting carbon dioxide with hydrogen |
| 01/09/2013 | EP2543675A1 Mononuclear metal complex, hydrogenation reduction catalyst, dehydrogenation catalyst, method for producing hydrogenation reduction product, method for producing hydrogen (h2), and method for producing dehydrogenation reaction product |
| 01/09/2013 | EP2543657A2 Methods for the synthesis of acrylic acid and derivatives from fumaric acid |
| 01/09/2013 | EP2542518A1 Method for preparing carboxylic acids by oxidative cleavage of a vicinal diol |
| 01/09/2013 | EP2542516A2 Production of ethylenically unsaturated carboxylic acid salts by the carboxylation of alkenes |
| 01/09/2013 | EP2542341A2 Modified zinc salts of c4-8-alkane dicarboxylic acids and use thereof as polymerization catalysts |
| 01/09/2013 | CN202658103U Calcium hydrogen citric acid production device |
| 01/09/2013 | CN202655026U Multi-layer stirring reactor |
| 01/09/2013 | CN202654890U Energy-saving and emission-reduction equipment for production of sodium gluconate by using catalytic oxidation method |
| 01/09/2013 | CN202654740U Equipment for preparing sodium gluconate through forced circulation and integral crystallization |
| 01/09/2013 | CN102869654A Method for the catalytic gas phase oxidation of hydrocarbons and catalysis reaction device |
| 01/09/2013 | CN102869444A Modified zinc salts of C4-8-alkane dicarboxylic acids and use thereof as polymerization catalysts |
| 01/09/2013 | CN102864189A Method for preparing alpha-linolenic acid based on urea envelope method of molecular distillation |
| 01/09/2013 | CN102863405A Dissolving pulp prehydrolysis solution autocatalysis furfuraldehyde preparation method and recycling method for acetic acid in prehydrolysis solution waste water and furfuraldehyde waste water |
| 01/09/2013 | CN102863331A Terephthalic acid hydrofining catalyst activity status judgment method |
| 01/09/2013 | CN102863330A Method for separating and refining industrial benzoic acid from PTA (pure terephthalic acid) process wastewater |
| 01/09/2013 | CN102863329A Purification method for lobule protopine |
| 01/09/2013 | CN102863327A Production device and production method of calcium citrate |
| 01/09/2013 | CN102863326A Preparation method of antiepileptic drug intermediate |
| 01/09/2013 | CN102863325A Periodic automatic control method for preparing chloroacetic acid |
| 01/09/2013 | CN102863315A Method of using lanolin to prepare wool acid metal soap and lanonol |
| 01/09/2013 | CN102861578A Method for producing a metal-containing shell catalyst without intermediate calcining |
| 01/09/2013 | CN102861542A Methylbenzene oxidation tower in 10000-tone level benzoic acid production |
| 01/09/2013 | CN102115408B Method for preparing pentaerythritol with co-production of potassium formate and sodium carbonate |
| 01/09/2013 | CN102050785B Imidazoline ionic liquid and preparation method and application thereof |
| 01/09/2013 | CN101921186B Method for extracting linoleic acid from safflower seed oil by silvered silica-gel column chromatography |
| 01/09/2013 | CN101781190B Method for extracting refined citric acid from citric acid fermentation liquid |
| 01/09/2013 | CN101671246B Method for producing sodium acetate trihydrate and anhydrous sodium acetate as byproducts |
| 01/09/2013 | CN101659609B Method for production of aqueous (meth)acrylic acid |
| 01/09/2013 | CN101560150B Method for extracting shikimic acid from aniseed |
| 01/09/2013 | CN101555194B Method for separating aqueous phase byproduct from Fischer-Tropsch synthesis reaction |
| 01/09/2013 | CN101553455B Process for production of isophthalic acid |
| 01/08/2013 | US8350082 Process for producing fluorine-containing compounds |
| 01/08/2013 | US8350081 Process for preparation of methyl metharylate using recycled methanol |
| 01/08/2013 | US8350070 Methods of preparing hydroxy functional vegetable oils |
| 01/08/2013 | CA2648215C Process for separating saturated and unsaturated fatty acids |
| 01/08/2013 | CA2566369C Pentenoic acid derivatives, processes for the preparation thereof, pharmaceutical compositions comprising them, and therapeutic applications thereof |
| 01/08/2013 | CA2556348C Stereoselective synthesis of a 4,4-disubstituted cyclohexanepropanoic acid |
| 01/08/2013 | CA2546018C Anthracene and other polycyclic aromatics as activators in the oxidation of aromatic hydrocarbons |
| 01/03/2013 | WO2012146978A3 A novel process for the preparation of tapentadol or a pharmaceutically acceptable salt thereof |
| 01/03/2013 | WO2011099834A3 Procedure for the purification of crude diacerein via potassium salt/dimethylformamide |
| 01/03/2013 | US20130006015 Process for preparing formic acid |
| 01/03/2013 | US20130006009 Process for continuously producing geometric shaped catalyst bodies k |
| 01/03/2013 | US20130006006 Chemicals Produced from Oil-Bearing Microbial Biomass |
| 01/03/2013 | US20130005976 Processes and Intermediates for Preparing a Macrocyclic Protease Inhibitor of HCV |
| 01/03/2013 | US20130000209 Functionalized microscale diamond particles and related structures and methods |
| 01/02/2013 | EP2540708A1 Metal complex, and adsorbent, occlusion material and separator material made from same |
| 01/02/2013 | EP2540393A1 Method for preparing catalyst for production of methacrylic acid |
| 01/02/2013 | EP2539071A1 Method of making heteropoly acid compound catalysts |
| 01/02/2013 | CN202643487U Pure terephthalic acid (PTA) mother liquor recovery system |
| 01/02/2013 | CN102858731A Processes for producing succinic acid from fermentation broths containing diammonium succinate |
| 01/02/2013 | CN102858448A Process for the production of anhydrides |
| 01/02/2013 | CN102850393A Method for synthesizing glyphosate original drug or its aqua through one-pot process |
| 01/02/2013 | CN102850264A Flupirtine A crystal form and its preparation method |
| 01/02/2013 | CN102850211A Gallic acid and clean and efficient production process thereof |
| 01/02/2013 | CN102850210A Method for purifying sodium citrate mother liquor |
| 01/02/2013 | CN102850209A Production method of calcium citrate and application of calcium citrate |
| 01/02/2013 | CN102850208A Enyne bromide compounds and preparation method and use thereof |
| 01/02/2013 | CN102850207A Method for oxidizing styrene |
| 01/02/2013 | CN102850206A Refinement method for ibuprofen |
| 01/02/2013 | CN102850205A Method for producing 1,2-cyclohexanediol and adipic acid |
| 01/02/2013 | CN102850204A Resolution method of (S)-2-arylpropionic acid non-steroidal anti-inflammatory drug |
| 01/02/2013 | CN102850198A Cyclohexanol oxidation method |
| 01/02/2013 | CN102850154A Method for directly oxidizing and hydroxylating aromatic hydrocarbons by using molecular oxygen under CO promotion |
| 01/02/2013 | CN102847550A Catalyst for preparation of acetic acid and methyl acetate through carbonylation of methanol and preparation method thereof |
| 01/02/2013 | CN102847499A Quench absorption tower and method for adopting quench absorption tower to absorb methacrolein and methacrylic acid |
| 01/02/2013 | CN102845423A Method for preparing dicamba cholinergic agent and dicamba cholinergic active compound |
| 01/02/2013 | CN102160956B Method for absorbing and utilizing phosgene tail gas |
| 01/02/2013 | CN102153543B Maleate salts of a quinazoline derivative useful as an antiangiogenic agent |
| 01/02/2013 | CN102010291B Method for producing formic acid and preparing acetone through hydrothermal reduction of CO2 by isopropanol |
| 01/02/2013 | CN101709029B Polybenzimidazole material and midbody organic diacid thereof as well as preparation methods thereof |
| 01/02/2013 | CN101696162B Method for preparing glutaric acid from dimethyl glutarate |
| 01/02/2013 | CN101657409B Process for preparing acrolein or acrylic acid or a mixture thereof from propane |
| 01/02/2013 | CN101591241B Method for preparing chiral 1, 2, 3, 4-tetrahydro-1-naphthoic acid |
| 01/02/2013 | CN101573320B Method and apparatus for the purification of high-purity 2,6-naphthalene dicarboxylic acid |
| 01/02/2013 | CN101379017B Acrolein preparation method |
| 01/02/2013 | CN101346337B Production of sodium diformate |
| 12/27/2012 | WO2012176621A1 Method for producing unsaturated carboxylic acid amide composition |
| 12/27/2012 | WO2012175255A2 Method for the production of 2-ethylheptanoic acid |
| 12/27/2012 | WO2012175229A1 Process for separating monochloroacetic acid and dichloroacetic acid via extractive distillation |
| 12/27/2012 | WO2012138750A3 Method of manufacturing a crystalline metal - organic frameworks by cathodic electrodeposition |