| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
|---|
| 04/14/1992 | US5104845 Carbonylation catalyst |
| 04/14/1992 | US5104844 Containing phosphorus, vanadium, molybdenum and ammonium components |
| 04/14/1992 | US5104799 Spray granulation from purified fermentation broth; free-flowing |
| 04/14/1992 | US5104503 Photochemical dimerization of organic compounds |
| 04/14/1992 | US5104492 Solvent extraction, dewatering recycling of solvent and precipitation mother liquor reduces waste products |
| 04/14/1992 | CA1298857C PROCESS FOR THE FABRICATION OF .beta.-HYDROXYBUTYRIC ACID AND ITS SALTS BY THE HYDROLYSIS OF OLIGOMERS OF .beta.-HYDROXYBUTYRIC ACID IN A BASIC MEDIUM |
| 04/14/1992 | CA1298845C Octahydronaphthalene derivatives and their preparation |
| 04/12/1992 | CA2052633A1 Process and catalyst for the production of ethylene and acetic acid |
| 04/08/1992 | EP0479692A1 Process for the smooth oxydation of ethane into a mixture of ethylene and acetic acid |
| 04/08/1992 | EP0479593A2 Process for acylation or alkylation of aromatic compounds in hydrogen fluoride |
| 04/08/1992 | EP0479463A2 Process for the production of carboxylic acid anhydrides |
| 04/08/1992 | EP0479084A2 Method for the production of granular citric acid and salts thereof |
| 04/08/1992 | EP0478721A1 New benzocycloalkene carboxylic acid and process for producing it. |
| 04/08/1992 | EP0446211A4 Process for preparing polymeric dispersants having alternating polyalkylene aud succinic groups |
| 04/08/1992 | CN1060042A Maleic anhydride catalyst and its use |
| 04/07/1992 | US5103047 Process for preparation of 4- and 5-ketocarboxylic acids |
| 04/07/1992 | US5103043 Carbonylation catalyst system |
| 04/07/1992 | US5102847 Dissolving bismuth nitrate or bismuth oxide in nitric acid as a bismuth source for a mixed oxide containing phosphorous, molybdenum, vanadium, copper and other metals |
| 04/07/1992 | US5102846 Process for preparing catalysts for producing methacrylic acid |
| 04/07/1992 | US5102630 Apparatus for increasing yield and product quality while reducing power costs in oxidation of an aromatic alkyl to an aromatic carboxylic acid |
| 04/06/1992 | CA2051366A1 Method for the production of granular citric acid and salts thereof |
| 04/05/1992 | WO1992005870A1 Shaped oxidation catalyst structures for the production of maleic anhydride |
| 04/05/1992 | CA2091767A1 Shaped oxidation catalyst structures for the production of maleic anhydride |
| 04/04/1992 | CA2052632A1 Process for the production of carboxylic acid anhydrides |
| 04/02/1992 | WO1992006062A1 Acetone removal process |
| 04/02/1992 | WO1992005139A1 Process for manufacture of 3,3',4,4'-biphenyltetracarboxylic acid |
| 04/01/1992 | EP0478472A2 Process for preparing adipic acid by hydrocarboxylation of pentenic acids |
| 04/01/1992 | EP0478197A1 Control process of isomer ratio of aromatic hydroxycarboxylic acid |
| 04/01/1992 | EP0477928A2 Process for recovering high-purity organic acid |
| 04/01/1992 | EP0477184A1 Inhibitors of mono-amine oxidase, process for their preparation, and their use in therapeutics. |
| 04/01/1992 | CN1059902A Process for simultaneous preparation of acetic acid and acetic anhydride |
| 03/31/1992 | US5101070 From an acetoacetic acid ester; by-product minimization |
| 03/31/1992 | US5101050 Process for the production of aromatic anhydrides and aromatic esters with superior color properties |
| 03/31/1992 | US5100850 Solvent extraction with hydrogen peroxide and acetic acid to recover rhodium catalyst values from acetic anhydride production process |
| 03/31/1992 | US5100592 Heated rotary spreaders, two feed streams, melting and coating powders |
| 03/31/1992 | CA1298309C Benzocycloheptene derivatives |
| 03/31/1992 | CA1298292C Aromatic compounds, their preparation process and their use in cosmetic |
| 03/31/1992 | CA1298290C Solution ibuprofen complexes, compositions and processes for preparing the same |
| 03/26/1992 | DE4129642A1 Novel catalyst for methacrylic acid or ester prepn. - obtd. by thermal activation of a vanadium phosphate precursor |
| 03/25/1992 | EP0477112A2 Process for preparing adipic acid by hydrocarboxylation of pentenic acids |
| 03/25/1992 | EP0476333A2 Process for simultaneous production of acetic acid and acetanhydride |
| 03/25/1992 | EP0476009A1 Extraction process for removal of impurities from terephthalic acid filtrate. |
| 03/24/1992 | US5099064 Method for increasing conversion efficiency for oxidation of an alkyl aromatic compound to an aromatic carboxylic acid |
| 03/24/1992 | US5099062 Carbonylation catalyst and process |
| 03/24/1992 | US5099036 α-(ω-cyanoalkanoyl)-γ-butyrolactone and method for producing the same |
| 03/24/1992 | US5098991 Process of preparing polyamide-imide and polyimide polymers from acid anhydrides and dianhydrides of disubstituted maleic anhydrides |
| 03/24/1992 | US5098895 Benzonaphthalene derivatives, a process for their preparation and their use in therapeutic and cosmetic compositions |
| 03/24/1992 | US5098841 Process for the preparation of hydroxy acids |
| 03/24/1992 | CA1297902C Process for preparing glyoxylic acid |
| 03/24/1992 | CA1297900C Preparation of (z)-2-(2-arylethenyl)arylcarboxylic acids |
| 03/22/1992 | CA2050570A1 Process for the simultaneous preparation of acetic acid and acetic anhydride |
| 03/21/1992 | WO1992005138A1 Manufacture of high-purity hydroxyacetic acid |
| 03/21/1992 | CA2091906A1 Manufacture of high-purity hydroxyacetic acid |
| 03/19/1992 | WO1992004167A1 Method of producing metal soap |
| 03/19/1992 | WO1992004118A1 Carbonylation of methanol using a novel transition metal catalyst precursor |
| 03/19/1992 | WO1991019692A3 Calcium citrate malate composition |
| 03/19/1992 | DE4029067A1 Verfahren zur herstellung der salze der 3,3-dideutero-2-fluoracrylsaeure und der trideutero-2-fluoracrylsaeure und deren verwendung A process for the preparation of the salts of 3,3-dideutero-2-fluoracrylsaeure and trideutero-2-fluoracrylsaeure and their use |
| 03/18/1992 | EP0475926A2 Oxidation of dialkyl polyaromatics to dicarboxypolyaromatics |
| 03/18/1992 | EP0475137A1 Process for the preparation of carboxylic acid chlorides |
| 03/18/1992 | EP0474666A1 Oxidative preparation of a-nor-17 beta-carboxy-3,5-secoandrostan-5-one-3 oic acid. |
| 03/18/1992 | CN1059525A Deprotection of allylic esters and ethers |
| 03/18/1992 | CN1059512A Reclamation of oxalic acid from effluents of antibiotic prodn. |
| 03/17/1992 | US5097069 Ferrous or cobaltous ions, quaternary ammonium or phosphonium or alkali or alkali earth metal compound, iodide ion |
| 03/17/1992 | US5097066 Dissolving 4,4'-dicarboxydiphenyl ether, 4,4'-carboxybis/ benzoic acid/ or terephthalic acid in monocarboxylic acid anhydride, removing impurities from solution, recovering purified acid by recrystallization or hydrolysis |
| 03/17/1992 | US5097064 By reduction of arylacrylic acid using a rhodium derivative and water soluble chiral ligand as catalyst |
| 03/17/1992 | US5097061 From isobutylbenzene and ethylene, dehydrogenation, carboxylation of the p-isobutylstyrene product, catalytic |
| 03/17/1992 | US5096925 Enkephalinase enzyme inhibitor analgesics, hypotensive agents |
| 03/17/1992 | CA1297486C Catalyzed process for the preparation of oxydiphthalic anhydrides |
| 03/17/1992 | CA1297485C Process for the preparation of oxydiphthalic anhydrides |
| 03/14/1992 | WO1992005128A1 Process for producing 3,3-dideutero-2-fluoracrylic acid and trideutero-2-fluoracrylic acid salts and their use |
| 03/14/1992 | CA2092689A1 Process for the preparation of the salts of 3,3-dideutero-2-fluoroacylic acid and of trideutero-2-fluoroacrylic acid and their use |
| 03/11/1992 | EP0474509A2 Method for purification of ibuprofen comprising mixtures |
| 03/11/1992 | EP0474303A1 Process for the preparation of cyclopentane derivatives and intermediates therefor |
| 03/11/1992 | EP0474200A2 Process for the resolution of racemic 2,2-dimethyl cyclopropane carboxylic acid |
| 03/11/1992 | EP0465653A4 Method for obtaining a promoter of adhesion between rubber and metal cord |
| 03/11/1992 | CN1059335A Synthesizing method of tetrachloroquinone anhydride |
| 03/11/1992 | CN1059297A Method of preparing catalyst for producing maleic anhydride by n-butane oxidation with fluid bed method |
| 03/11/1992 | CA2050866A1 Oxidation of dialkyl polyaromatics to dicarboxypolyaromatics |
| 03/10/1992 | US5095147 2,2-difluorocyclopropyl derivatives |
| 03/10/1992 | US5095146 Water addition to crystallization train to purify terephthalic acid product |
| 03/10/1992 | US5095145 Preparation of purified terephthalic acid from waste polyethylene terephthalate |
| 03/10/1992 | US5095144 Process for dimerizing aromatic halogen compound |
| 03/10/1992 | US5095143 Alkylaromatic to aromatic carboxylic acid |
| 03/10/1992 | US5095142 Catalytic oxidation |
| 03/10/1992 | US5095141 Process for pseudocumene oxidation to trimellitic acid with mother liquor recycle |
| 03/10/1992 | US5095135 Oxidation, catalyst reuse |
| 03/10/1992 | US5095125 Hydrocarbon oxidation |
| 03/10/1992 | US5094995 Supported perfluorinated ion-exchange polymers |
| 03/10/1992 | CA1297127C2 Polycyclical aromatic derivatives and cosmetic use |
| 03/10/1992 | CA1297125C Naphthylaromatic compounds; process for preparing the same and their use in cosmetics |
| 03/05/1992 | WO1992003404A1 Process for transforming (benzoyl-3 phenyl)-2 propionic acid into an s(+) isomer |
| 03/05/1992 | CA2089558A1 Process for transforming r(-)-benzoyl-3-phenyl)-2-propionic acid into an s(+)-isomer |
| 03/05/1992 | CA2050560A1 Process for resolution of racemates of 2,2-dimethylcyclopropanecarboxylic acid |
| 03/04/1992 | EP0473541A2 Process for enrichment or separation, copolyamide and copolyimidamide and their use |
| 03/03/1992 | US5093529 Process for the preparation of fluorinated benzoic acids |
| 03/03/1992 | US5093523 Oxidation of dibromoperfluorobutane, sulphuric anhydride and oleum, catalyst of mercury, mercury sulphate and boric anhydride |
| 03/03/1992 | US5093522 Carboxylic acid halides containing trifluoromethyl groups and a process for their preparation |
| 03/03/1992 | US5093521 Process for producing methacrylic acid |
| 03/03/1992 | US5093516 Aromatic compounds, a process for their preparation and their use in human and veterinary medicine and for cosmetic compositions |
| 03/03/1992 | US5093510 Process for producing copper formate |