Patents
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
10/1992
10/27/1992US5158941 Lipid A analog as stimulant for production of interleukin-1 in human monocytes and tumor cell growth inhibitor
10/27/1992US5158923 Phosphorous/vanadium oxidation catalyst
10/27/1992US5158921 Carbonylation catalyst and process
10/27/1992CA2067077A1 Process for the preparation of perfluoroethercarboxylic acids
10/27/1992CA1309418C Preparation of methacrylic acid
10/26/1992CA2067075A1 Process for the preparation of 2,3,4,5-tetrafluorobenzoic acid
10/24/1992CA2061880A1 Methods and compositions for inhibiting (meth) acrylic acid polymerization
10/23/1992CA2059470A1 Photochlorination of phthalic anhydride
10/21/1992EP0509518A1 Process for the preparation of 2,4-dichlorophenoxyacetic acid
10/21/1992EP0509213A1 Process for the simultaneous and continuous production of carbonyloxy silanes and of carboxylic acid chlorides
10/20/1992US5157130 Adding a monochloroaliphatic alcohol, a copper compound and a zinc compound; heat resistance; storage stability
10/20/1992US5157042 3-oxa-5-fluoro-carbacyclins, their preparation and use as medicinal agents
10/20/1992CA1309106C SUBSTITUTED PHENYL .alpha.-FLUOROACRYLATES
10/20/1992CA1309087C Cyclodextrin clathrates of carbacyclin derivatives and their use as medicinal agents
10/20/1992CA1309080C Polymerization catalysts and polymerization process using such catalysts
10/19/1992CA2066382A1 Process for the simultaneous and continuous preparation of acyloxysilanes and carboxylic acid chlorides
10/15/1992WO1992017434A1 Process for producing oligomeric fatty acids and their low alkyl esters
10/14/1992EP0508264A1 Process for the arylation of olefines
10/14/1992EP0508261A2 Process for preparing beta-halogen tert.alkyl carboxylic acid chlorides
10/14/1992EP0508147A2 Process for producing carboxylic acid chloride
10/14/1992EP0508006A1 Process for preparing soap-acyl isethionate compositions
10/14/1992EP0396650B1 Device for carrying out catalytic reactions
10/13/1992US5155266 Purification of acetic acid with ozone in the presence of an oxidation catalyst
10/13/1992US5155265 Removal of iodide, unsaturated, carbonyl impurities
10/13/1992US5155263 Contacting 1,2-butanediol with molecular oxygen in the presence of a platinum catalyst
10/13/1992US5155262 Anhydrous diluents for the isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid
10/13/1992US5155261 Process for acetic acid preparation and heterogenous catalyst for same
10/13/1992US5155260 Process for the preparation of 2,2-dimethyl-5-(2,5-dimethyl-phenoxy)-pentanoic acid, intermediates for preparing this compound and process for preparing the intermediates
10/13/1992US5155258 Intermediates for drugs, herbicides
10/13/1992US5155235 Reducing pentavalent to tetravalent vanadium compound; reacting with phosphoric acid in presence of magnesium or zirconium compound; separating, drying, calcining
10/13/1992US5155231 Process for preparation of 3,4,5,6- tetrahydrophthalimide
10/13/1992US5155104 Phenylalkan(en)oic acid
10/13/1992US5154800 Using DMSO, DMF, sulfolane and dimethylacetamide
10/13/1992CA1308737C Process for producing methacrylic ester
10/09/1992WO1992018456A1 PROCESS FOR DECOMPOSING α,β-UNSATURATED CARBONYL COMPOUNDS IN REFINING ACETIC ANHYDRIDE AND/OR ACETIC ACID
10/08/1992DE4110836A1 Verfahren zur hestellung oligomerer fettsaeuren und deren niedrigalkylester Process for the operations department of oligomeric fatty acids and their lower alkyl
10/08/1992DE4110835A1 Verfahren zur herstellung hydrophobierter doppelschichthydroxid-verbindungen A process for preparing hydrophobicized double layer hydroxide compounds
10/07/1992EP0507617A2 Two stage process for producing maleic anhydride from butane
10/07/1992CN1018548B Carboxylic acid derivatives, processes for preparation thereof and pharmaceutical compositions containing them
10/06/1992US5153353 Antilipemic agents
10/06/1992US5153339 Oxidizing naphthalene and phthalic anhydride solvent extraction with hydrocarbon
10/06/1992US5153335 Process for the preparation of oxydiphthalic anhydride and acyloxyphthalic anhydrides
10/06/1992US5153334 Partially fluorinated tetracarboxylic acid and the dianhydride thereof
10/06/1992US5153162 Catalyst for the production of methacrylic acid
10/06/1992US5152899 Purification of carboxylic acid salt solutions by permeation through semipermeable membrane of polymeric perfluorosulfonic acid salts
10/05/1992WO1992017405A1 Process for producing hydrophobised double-layer hydroxide compounds
10/05/1992CA2107685A1 Process for producing hydrophobicized double-layer hydroxide compounds
10/01/1992WO1992016534A1 Recovery of phytic and/or lactic acid and direct retrieval of inositol
10/01/1992WO1992016499A1 General synthesis method by photochemical process of cyclopropanic components present in natural pyrethrines and in synthetic pyrethroids and their 1-aza-1,4,6 trianic precursors
10/01/1992WO1992016490A1 Processes for recovering citric acid
10/01/1992WO1992016489A1 Process for preparing 3-hydroxypropionic acid
10/01/1992WO1992016488A1 Process for preparing malonic acid
10/01/1992WO1992016476A2 Process for the manufacture of adipic acid
10/01/1992CA2106081A1 Recovery of phytic and/or lactic acid and direct retrieval of inositol
09/1992
09/30/1992EP0506240A2 Process for the recovery of acetic acid from compositions comprising acetic acid and water
09/30/1992EP0505863A1 Catalyst for the production of hardened fatty acids and process for producing the same
09/30/1992EP0505746A2 Process for preparing alkaline earth acetates
09/29/1992US5151551 Method for purification of ibuprofen comprising mixtures
09/29/1992US5151550 Cyclopentane derivatives
09/24/1992DE4109387A1 Temp. control in salt bath phthalic anhydride prodn. - using mathematical relationship relating hot spot temp., O-xylene feed concn. and various standard values
09/23/1992EP0504839A1 Separation process of catalysts from suspensions by filtration
09/23/1992EP0504277A1 Oxidative secondary rhodium recovery process.
09/23/1992CN1064676A Process for production of terephthalic acid
09/23/1992CN1064675A Process for production of terephthalic acid
09/23/1992CN1064674A Method of manufacturing ferulic acid
09/22/1992US5149880 Nitrogen-containing aromatic heterocyclic ligand-metal complexes and their use for the activation of hydrogen peroxide and dioxygen in the reaction of organic compounds
09/22/1992US5149869 Process for the production of dimethylcyclopropanecarboxylic acid
09/22/1992US5149868 Carbonylation process
09/22/1992US5149867 Crystallization of water-insoluble dicarboxylic acid
09/22/1992US5149866 Process for the preparation of omega-arylalkanoic acids
09/22/1992US5149865 New p-oxibenzoic acid derivatives, process for their preparation and their use as drug
09/22/1992US5149858 Reacting with chlorine gas in presence of organic cation catalysts
09/22/1992US5149854 Preparation of platinum group metal and rhenium carboxylates
09/22/1992US5149831 Isomerizing 5-methylcycopentadiene to 1-and 2-; Diels-Alder reaction with maleic anhydride
09/22/1992US5149643 Fungal fermentation of sugars or molasses, crystallization; purification
09/22/1992US5149552 Neutralized cirtric acid; fructose sweetener for soft drink
09/22/1992CA1307796C Method for preparing optically active 3,4-dihydroxy butyric acid derivatives
09/22/1992CA1307795C Recovery of acrylic acid and/or ethyl acrylate from black acid
09/20/1992CA2063324A1 Process for separating catalysts from suspensions by filtration
09/17/1992WO1992015400A1 Ruthenium-binap asymmetric hydrogenation catalyst
09/17/1992DE4109049A1 Vanadium oxide-titanium-carrier catalyst evaluation for phthalic acid prodn. - by comparing IR peak intensity at 800-900 cm with those at 750-1050 and at 1100-1200 cm
09/17/1992DE4108351A1 Neue leukotrien-b(pfeil abwaerts)4(pfeil abwaerts)-derivate, verfahren zu ihrer herstellung und ihre verwendung als arzneimittel New leukotriene b (Down Arrow) 4 (down arrow) derivatives, process for their production and their use as drug
09/17/1992DE4107987A1 Verfahren zur herstellung von 3-hydroxypropionsaeure A process for producing 3-hydroxypropionic acid
09/17/1992DE4107986A1 Verfahren zur herstellung von malonsaeure A process for preparing malonic acid
09/16/1992EP0504069A2 Process for preparing E-2-propyl-2-pentenoic acid and intermediate products
09/16/1992EP0503650A2 Method of manufacturing ferulic acid
09/16/1992EP0503294A2 Process for preparing perfluorpolyetheracrylfluorides
09/16/1992CN1064477A Oxo process for organic acid with halohydrocarbon under normal pressure
09/13/1992WO1992016504A1 New leukotriene b4 derivatives, method for preparing them and their use as drugs
09/13/1992CA2082818A1 Leukotriene b4 derivatives, method for preparing them and their use as drugs
09/09/1992EP0502628A2 Process for the production of terephthalic acid
09/09/1992EP0502387A1 Process for producing 3,3',4,4'-tetramethyldiphenylmethane
09/09/1992EP0502384A2 Process for the recovery of adipic acid
09/09/1992EP0502106A1 Substituted indole-, indene-, pyranoindole- and tetrahydrocarbazole- alkanoic acid derivatives as inhibitors of pla2 and lipoxygenase
09/08/1992US5145995 Rhodium carboyxlation catlysts
09/08/1992US5145994 Reduction of sodium 4-hydroxymandalate
09/08/1992US5145993 Process for preparing D-2-(6-methoxy-2-naphthyl)-propionic acid and intermediate thereof
09/08/1992US5145992 Oxyalkylation of an alcohol, reaction with monoaloacetic acid and then with hydrochloic acid
09/08/1992US5145989 Recovery of acrylic acid and/or ethyl acrylate from black acid
09/08/1992US5145987 Stereoselective carboyxlation