| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 10/11/1994 | US5354899 Production process of 1,4,5,8-naphthalene tetracarboxylic acid |
| 10/11/1994 | US5354898 Method for purifying crude aromatic carboxylic acids |
| 10/11/1994 | US5354897 Process for obtaining orthohydroxymandelic acid and its salts |
| 10/11/1994 | US5354887 Preparation of hexene-1,6-dioic acids |
| 10/11/1994 | CA1332425C Controlled temperature process for making 2,2'-oxodisuccinates useful as laundry detergent builders |
| 10/11/1994 | CA1332424C Spent acid recycle in methacrylic acid or ester manufacture |
| 10/10/1994 | WO1994024083A1 Process for producing adipic acid |
| 10/08/1994 | CA2120589A1 Alkaline earth metal salts, transition metal salts and transition metal complexes of ketocarboxylic acids as corrosion inhibitors |
| 10/05/1994 | EP0618186A1 Process and apparatus for producing terephthalic acid |
| 10/05/1994 | EP0618185A1 Process for the removal of corrosion metal contaminants from liquid compositions |
| 10/05/1994 | EP0618184A1 Process for the preparation of carboxylic acids or corresponding esters in presence of a catalyst based on rhodium and iridium |
| 10/05/1994 | EP0618183A1 Process for the preparation of carboxylic acids or corresponding esters in presence of a catalyst based on rhodium and iridium |
| 10/05/1994 | EP0618009A1 Method for stabilizing rhodium compound |
| 10/04/1994 | US5352825 Recovery of organic acid salts from impure process streams by addition of bases |
| 10/04/1994 | US5352824 Process for the preparation of alkoxyalkanoic acids |
| 10/04/1994 | US5352823 Forming saturated solution in hydrocarbon solvent, seeding with solid ibuprofen, cooling at controlled reducing temperature, precipitaion |
| 10/04/1994 | US5352813 Carbonylation of methanol using a novel transition metal catalyst |
| 10/04/1994 | US5352811 Method of preparing alkanoyloxytetrodecanoic acid by assymmetric allylboratron |
| 10/04/1994 | US5352415 Control system for acetic acid manufacturing process |
| 09/29/1994 | WO1994021766A1 Process for separating docosahexaenoic acid or ester thereof from marine microalgae |
| 09/29/1994 | WO1994021589A1 Citraconic anhydride preparation process |
| 09/29/1994 | WO1994021588A1 Method of preparing monochloroacetic acid with a reduced dichloroacetic acid content |
| 09/29/1994 | WO1994021587A1 Basic calcium carboxylates |
| 09/29/1994 | WO1994021586A1 Carboxylic acid isomerisation method |
| 09/29/1994 | WO1994021585A1 Process for the carbonylation of acetylenically unsaturated compounds |
| 09/29/1994 | CA2160546A1 Basic calcium carboxylates |
| 09/29/1994 | CA2156418A1 Process for isomerizing carboxylic acids |
| 09/28/1994 | EP0617002A1 Process for preparing naphthalenepolycarboxylic acids |
| 09/28/1994 | EP0616998A1 Process and plant for the purification of acrylic acid |
| 09/28/1994 | EP0616997A1 Process for the recovery of a carbonylation product |
| 09/28/1994 | EP0616846A1 Process for the production of a noble metal hydrogenation catalyst supported on active carbon |
| 09/28/1994 | EP0616607A1 Process for removing acetone from carbonylation processes. |
| 09/27/1994 | US5350872 Process for the preparation of carboxylic acids and derivatives of them |
| 09/27/1994 | US5350868 ω-hydroxy-(ω-3)-ketonitrile and method for preparing ω-hydroxyaliphatic acid |
| 09/26/1994 | CA2119991A1 Process for the isomerization of double bonds |
| 09/23/1994 | CA2119298A1 Process for the removal of corrosion metal contaminants from liquid compositions |
| 09/22/1994 | DE4407985A1 Process for the preparation of benzylpyruvic acids and their esters |
| 09/22/1994 | DE4308867A1 Process for the preparation of enantiomerically pure (S)-ketoprofen |
| 09/22/1994 | DE4308865A1 Process for the preparation of enantiomerically pure (S)-ketoprofen or (R)-ketoprofen by crystallisation |
| 09/20/1994 | US5349092 Process for producing catalysts for synthesis of unsaturated aldehydes and unsaturated carboxylic acids |
| 09/20/1994 | US5349084 Solvent extraction, precipitation with high pressure gas, separation |
| 09/20/1994 | US5348927 Dechlorination of oxidation catalysts using hydrogen chloride as a reducing agent for vanadium |
| 09/20/1994 | US5348923 Silica-based substrates modified by grafting of polyalkylguanidinium groups, their process of manufacture and their use as catalysts |
| 09/15/1994 | WO1994020510A1 Homogeneous bimetallic hydroformylation catalysts and processes utilizing these catalysts for conducting hydroformylation reactions |
| 09/15/1994 | WO1994020450A1 Process for the recovery of cyclohexanedicarboxylic acids |
| 09/15/1994 | WO1994020448A1 Method and device for producing monocarboxylic acids from carbohydrates, carbohydrate derivatives or primary alcohols |
| 09/15/1994 | WO1994020447A1 Catalyst and method for purifying crude terephthalic acid, isophthalic acid or naphthalene dicarboxylic acid |
| 09/15/1994 | DE4308087A1 Process for the separation of acrylic acid from the reaction gases of the catalytic oxidation of propylene and/or acrolein |
| 09/15/1994 | CA2157192A1 Catalyst and method for purifying crude terephthalic acid, isophthalic acid or naphthalene dicarboxylic acid |
| 09/14/1994 | EP0614872A1 Process for removal of solid organic matters |
| 09/14/1994 | EP0614870A2 Process for producing optically active aldehydes |
| 09/14/1994 | EP0614868A1 Process for the preparation of 3 to 5 C-atoms containing alpha, beta-monoethylenic unsaturated aldehydes, carboxylic acids and nitriles |
| 09/14/1994 | EP0614457A1 Leukotriene-b 4? derivatives, process for preparing the same and medicaments. |
| 09/14/1994 | EP0474666B1 Oxidative preparation of a-nor-17 beta-carboxy-3,5-secoandrostan-5-one-3 oic acid |
| 09/14/1994 | CN1092064A Tri-substituted phenyl derivatives and processes for their preparation |
| 09/14/1994 | CN1091998A Catalysts for the production of maleic anhydride containing vanadium-phosphorus oxide with selected promoter elements |
| 09/13/1994 | US5347048 Process for producing (±)-2,5,5,8a-tetramethyl-1-(carboxymethyl)-2-hydroxydecalin |
| 09/13/1994 | US5347047 Phosgene |
| 09/13/1994 | US5347023 Process for treating fatty acids |
| 09/11/1994 | CA2115973A1 Preparation of c3-c5.alpha., .beta.-monoethylenically unsaturated aldehydes, carboxylic acids, or nitriles |
| 09/07/1994 | EP0613878A1 Citric acid extraction |
| 09/07/1994 | EP0613456A1 Resolution of ketoprofen |
| 09/07/1994 | EP0530238B1 Activation of noble metal catalysts for use in hydrodehalogenation of halogen-substituted hydrocarbons containing fluorine and at least one other halogen |
| 09/07/1994 | EP0513055B1 Process for reacting a low molecular weight hydroxy compound with a carboxylic acid halide |
| 09/07/1994 | CN1091607A Method for producing edible or medical calcium acetate |
| 09/07/1994 | CN1025849C New continuous industrial manufacturing process for an aqueous solution of glyoxylic acid |
| 09/06/1994 | US5344977 Process for the preparation of 2,3-dibromopropionyl chloride |
| 09/06/1994 | US5344976 Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides |
| 09/06/1994 | US5344975 Catalytic decarboxylation by hydrolysis in the presence of acid catalyst |
| 09/06/1994 | US5344972 Isomerization, methyl formate and carbon monoxide |
| 09/06/1994 | US5344970 Ruthenium-phosphite complex |
| 09/06/1994 | US5344969 Dissolving in mixed solvent of amine and alcohol and crystallizing |
| 09/06/1994 | US5344968 Method for producing o-alkoxybenzoic acid |
| 09/06/1994 | US5344960 Catalyst for carbonylating naphthalene mono- and disulfonates and process using said catalyst |
| 09/01/1994 | WO1994019308A1 Alkaline calcium/zinc mixed soaps |
| 09/01/1994 | WO1994019307A1 Lactic acid extraction and purification process |
| 09/01/1994 | WO1994019082A1 Separation process |
| 09/01/1994 | CA2153651A1 Separation process |
| 08/31/1994 | EP0612748A1 Process for the preparation of pyromellitic dianhydride (PMDA) |
| 08/31/1994 | EP0612721A1 Aliphatic omega-hydroxy-3-ketonitriles and process for the preparation of aliphatic omega-hydroxycarboxylic acids |
| 08/31/1994 | EP0612714A1 Process and plant for the purification of raw maleic anhydride recovered from gaseous reaction mixtures |
| 08/31/1994 | EP0612713A1 Process for the carbonylation of allylic butenols and their esters |
| 08/31/1994 | EP0612712A1 Process for the production of carboxylic acid anhydrides |
| 08/31/1994 | EP0612711A1 Process for the hydroxycarbonylation of lactones |
| 08/31/1994 | EP0612310A1 Process for the manufacture of cinnamic acid derivatives. |
| 08/31/1994 | CN1091439A Preparation of polyoxyalkylene-alpha, omega-dicarboxylic acids |
| 08/31/1994 | CN1091417A Acetic acid recovery |
| 08/31/1994 | CN1091416A Oil-removing purifying of crude naphthenic acid by amination |
| 08/31/1994 | CN1091411A Process for separating enantiomers from a racemic mixture |
| 08/30/1994 | US5342979 Removing by-products by azeotropic rectification with alkanediol as entrainer |
| 08/30/1994 | US5342965 Process for producing branched fats |
| 08/30/1994 | CA2012567C Process for purifying and recovering the contaminated catalyst solution arising in the carbonylation of methanol and/or methyl acetate and/or dimethyl ether |
| 08/26/1994 | CA2115530A1 Process for the production of carboxylic acid anhydrides |
| 08/24/1994 | EP0611399A1 Hydrogenation of enzymatically-produced glyoxylic acid/aminomethyl-phosphonic acid mixtures |
| 08/24/1994 | EP0611398A1 Enzymatic preparation of n-(phosphonomethyl)glycine |
| 08/24/1994 | CN1091119A Process for preparing carboxylic acids |
| 08/24/1994 | CN1025731C Anhydrous diluents for the isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid |
| 08/18/1994 | WO1994018152A1 Method of purifying aromatic dicarboxylic acid |
| 08/18/1994 | WO1994017892A1 Filtration process |
| 08/17/1994 | EP0610506A1 Process for producing high-purity eicosapentaenoic acid or ester thereof |