| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 07/18/1990 | EP0378022A1 Functional chlorofluorinated compounds and their preparation |
| 07/18/1990 | EP0377637A1 Process for the preparation of oxy-diphthalic anhydrides |
| 07/17/1990 | US4942258 Reaction of propionic acid and formaldehyde in the presence of a catalysts of cesium and silica |
| 07/17/1990 | US4942257 Method of manufacturing alkali metal salt of 2,3,6,7-naphthalenetetracarboxylic acid |
| 07/17/1990 | US4942242 Anticholesterol agents |
| 07/17/1990 | US4942231 Method of preparing a chlorinated, brominated, radio-brominated, iodinated and/or radioiodinated aromatic or heteroaromatic compound |
| 07/17/1990 | US4941895 Process for the continuous separation of maleic anhydride from process gases |
| 07/17/1990 | CA1271738A1 Fumed silica modified catalyst and process for oxidation of n-butane to maleic anhydride |
| 07/14/1990 | CA2007686A1 Process for the continuous oligomerization of hexafluoropropene oxide |
| 07/14/1990 | CA2007685A1 Process for the oligomerization of hexafluoropropene oxide |
| 07/14/1990 | CA2007684A1 Process for the dimerization of hexafluoropropene oxide |
| 07/12/1990 | WO1990007511A1 Enhanced chemiluminescence from 1,2-dioxetanes through energy transfer to tethered fluorescers |
| 07/12/1990 | WO1990007480A1 Acid catalyzed process |
| 07/11/1990 | EP0377430A1 Process for the separation of acids from salts and hydrocarbon-containing substrates |
| 07/11/1990 | CN1043695A Improved process for production of polycarboxylic aromatic acids |
| 07/11/1990 | CN1008693B Catalyst recovery process |
| 07/10/1990 | US4940814 Reaction of hexafluoropropene oxide with fluorinated carboxylic acid fluorides |
| 07/10/1990 | US4940813 Resolution of a carboxylic acid |
| 07/10/1990 | US4940787 Process for the carbonylation of acetylenic unsaturated compounds |
| 07/10/1990 | US4940696 Benzonaphthalene derivatives and their use in therapeutic and cosmetic compositions |
| 07/10/1990 | CA1271495A1 1,1-(3-ethylphenyl)phenylethylene and method for preparing it |
| 07/10/1990 | CA1271422A1 Pharmaceutical compounds |
| 07/10/1990 | CA1271416A1 Antimicrobial compositions containing benzoic acid derivatives for use as disinfectants drugs or preservative agents |
| 07/05/1990 | CA2007126A1 Process of separating acids from substrates containing salts and carbohydrates |
| 07/04/1990 | EP0376117A1 Preparation of methacrylic acid by the oxidation of methacrolein |
| 07/04/1990 | EP0375812A1 Process for the production of an aromatic polycarboxylic acid |
| 07/04/1990 | CN1043494A Nitrogen dioxide process for producing oxali acid |
| 07/04/1990 | CN1008635B Ether carboxylate detergent builders and process for preparation |
| 07/03/1990 | US4939303 Chemical intermediates for pyrethroids |
| 07/03/1990 | US4939298 Isomerization of carboxylic acids |
| 07/03/1990 | US4939297 Extraction process for removal of impurities from terephthalic acid filtrate |
| 07/03/1990 | US4939296 Process for the production of catalytically-active metallic glasses |
| 07/03/1990 | US4939290 Benzoic acid derivatives |
| 07/03/1990 | US4939261 N-substituted butyramide derivatives useful for treatment of conditions responsive to inhibition of enkephalinase |
| 07/03/1990 | US4938984 Nutritive compositions containing fatty substances |
| 07/03/1990 | US4938898 Chlorination of acty chloride |
| 06/28/1990 | WO1990006908A1 Lead/alkaline earth complexes, process for producing them and their use as stabilizers for plastics |
| 06/28/1990 | WO1990006669A2 An improved process for production of polycarboxylic aromatic acids |
| 06/27/1990 | EP0375463A1 Process for recovering lactic acid from solutions which contain it |
| 06/27/1990 | EP0374850A1 Method for preparing alpha-(4-isobutylphenyl)propionic acid or its precursor |
| 06/27/1990 | EP0374760A1 Dioxane addition compounds of aromatic meta- or para-hydroxy-carboxylic acids, and process for their preparation |
| 06/27/1990 | EP0374687A2 Isomerization of carboxylic acids |
| 06/27/1990 | EP0374233A1 Dihalogeno-3,3 fluoro-2 propenols-1, preparation method and utilization for the synthesis of fluoro-2 acrylic and dihalogeno-3,3 fluoro-2 acrylic acids and their derivatives |
| 06/27/1990 | EP0248074B1 Process for the co-production of aromatic carboxylates and alkyl iodides |
| 06/27/1990 | EP0151581B1 Phosphorus-containing metal salt/olefin compositions and reaction products of same with active sulfur |
| 06/27/1990 | CN1043315A Improved process for extracting citric acid |
| 06/27/1990 | CN1043314A Improved process for extracting citric acid |
| 06/27/1990 | CN1043313A Process for continuous crystallization of citric acid and its apparatus |
| 06/27/1990 | CN1043312A Process for preparing levulinic acid |
| 06/26/1990 | US4937379 Carboxylic acid synthesis process |
| 06/26/1990 | US4937378 Catalytic hydrogenation |
| 06/26/1990 | US4937377 Heating in a solvent selected from dimethylacetamide, methyl pyrrolidone and quinoline |
| 06/26/1990 | US4937375 (Phenylethenyl)phenylpropionic acid and its ester, and method for producing (benzoylphenyl)propionic acid or its ester |
| 06/26/1990 | US4937373 Substituted naphthalene carboxylic acids |
| 06/26/1990 | US4937362 Process for production of α-(4-isobutylphenyl)propionic acid |
| 06/26/1990 | US4937320 Dimerized fatty acid having a high content of dicarboxylic acid |
| 06/26/1990 | EP0297126A4 Phase transfer catalysis. |
| 06/26/1990 | CA1270844A1 Quinone derivative and pharmaceutical composition containing the same |
| 06/26/1990 | CA1270832A1 Diphenyl ether herbicides |
| 06/26/1990 | CA1270808A1 Iron/lithium-promoted catalysts for the production of maleic anhydride and a process for the preparation thereof |
| 06/26/1990 | CA1270766A1 Cosmetic compositions containing as active ingredient at least one bicyclic naphtoic compound |
| 06/22/1990 | CA2005921A1 Process for recovering lactic acid from solutions which contain it |
| 06/20/1990 | EP0373619A2 Process for preparing para-hydroxybenzoic acid |
| 06/20/1990 | EP0373578A2 Catalyst recovery |
| 06/20/1990 | EP0373484A1 Lead and alkaline earth complexes, process for their preparation and their use as stabilizers in plastics |
| 06/20/1990 | CN1043123A Anhydrous diluents for isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid |
| 06/20/1990 | CN1043122A Treatment of acetic acid with hydrogen in presence of hydrogenation catalyst |
| 06/19/1990 | US4935549 Process for producing acetic acid |
| 06/19/1990 | US4935541 Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,4,6-trifluorophthalic anhydride |
| 06/19/1990 | US4935540 Oxidizing aryloxyethanol in presence of palladium and thalliu m on carbon catalyst, acidifying |
| 06/19/1990 | US4935539 Method for increasing yield and product quality while reducing power costs in oxidation of an aromatic alkyl hydrocarbon to an aromatic carboxylic acid |
| 06/19/1990 | US4935446 Prostaglandin analogues, process for their preparation and pharmaceutical compositions containing them |
| 06/19/1990 | US4935100 Dehydration of formic acid by extractive distillation |
| 06/19/1990 | CA2005858A1 Dioxane adducts of aromatic meta- or para-hydroxy-carboxylic acids and process for their preparation |
| 06/19/1990 | CA1270462A1 Process for preparation of glyoxylic acid through electrochemical anodic oxidation of glyoxal |
| 06/14/1990 | WO1990006296A1 Direct fluorination process for making perfluorinated organic substances |
| 06/13/1990 | EP0373082A1 Process for preparing levulinic acid |
| 06/13/1990 | EP0373057A1 Process for the preparation of (2-propyl)2-pentenoic acid and its esters |
| 06/13/1990 | EP0372993A1 Treatment of acetic acid with hydrogen in the presence of a hydrogenation catalyst |
| 06/13/1990 | EP0372900A2 Process for drying hydrogen fluoride - carboxylic acid mixtures |
| 06/13/1990 | EP0372706A2 Process for production of acrylate and acrylate-containing polymer |
| 06/13/1990 | EP0372385A2 Naphthalene carboxylic acids, their preparation and application as medicaments |
| 06/13/1990 | CN1042906A Process for preparing quinolone carboxylic acid intermediates |
| 06/12/1990 | US4933492 Hydrogenation using catalyst bed containing two group viii noble metal components |
| 06/12/1990 | US4933491 Method for purifying a crude naphthalene dicarboxylic acid |
| 06/12/1990 | US4933490 Process for the preparation of L(-)carnitine hydrochloride and of L(-)carnitine inner salt |
| 06/12/1990 | US4933367 Carboxylic acid derivatives, processes for the preparation thereof, the use thereof, and pharmaceutical compositions which contain these compounds |
| 06/12/1990 | US4933312 Maleic anhydride catalysts and process for their manufacture |
| 06/12/1990 | CA2004961A1 Catalyst recovery |
| 06/12/1990 | CA1270256A1 5-arylalkyl-4-alkoxy-2(5h)-furanones, intermediates and processes for the preparation thereof and medicaments containing them |
| 06/12/1990 | CA1270252A1 Allylbicyclo[2.2.1]hept-5-ene-2-carboxylic acids and derivatives thereof |
| 06/09/1990 | CA2004586A1 Treatment of acetic acid with hydrogen in the presence of a hydrogenation catalyst |
| 06/08/1990 | CA2004696A1 Naphthalene carboxylic acids |
| 06/06/1990 | EP0371748A2 Inhibition of polymerization during distillation of monomers |
| 06/06/1990 | EP0371721A2 Preparation process for aromatic hydroxycarboxylic acid |
| 06/06/1990 | CA2003924A1 Process for drying hydrogen fluoride-carboxylic acid mixtures |
| 06/05/1990 | US4931590 Preparation of adipic acid |
| 06/05/1990 | US4931572 Oxidation of hydrocarbon with oxygen and catalyst from group 1a oxides, titanium dioxide, vanadium pentoxide |
| 06/05/1990 | CA1269994A1 Method for producing cyclopropanecarboxylic acid derivatives |
| 05/31/1990 | WO1990005720A1 Process for producing carbacyclin derivatives by stereoselective introduction of the 5.6 double bond |