| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 03/03/1993 | CN1019970C Recovery of acrylic acid and/or ethyl acrylates from black acid |
| 03/03/1993 | CN1019969C Synthesis of conjugated carboxylic alkeneacid |
| 03/02/1993 | US5191132 Fluorene Derivatives |
| 03/02/1993 | US5191118 Hydrogenation in the presence of group VIII metal catalysts sulfur compoumds |
| 03/02/1993 | US5191116 Heteropoly acid catalyst |
| 03/02/1993 | US5191115 Method for obtaining carboxylic acids by reaction of alkanes and formiates |
| 03/02/1993 | US5191112 Salt formation, crystallization |
| 03/02/1993 | US5191098 Continuous process for preparation of aqueous dispersions of metal soaps |
| 03/02/1993 | US5191097 Salt formation with calcium oxide and fatty acid in a solution with sodium carbonate and bicarbonate |
| 03/02/1993 | US5191096 Process for producing ω-hydroxy fatty acids |
| 03/02/1993 | US5191095 Preparation of ibuprofen |
| 03/02/1993 | US5190905 Phosphine ligand |
| 03/02/1993 | US5190619 Distillation mixtures in a rectification column and extraction |
| 03/02/1993 | CA1314051C Method for producing -(p-isobutylphenyl)-propionic acid or its alkyl esters |
| 02/28/1993 | CA2075868A1 Method of separating organic solvents |
| 02/25/1993 | DE4127888A1 Prepn. of E,E- and E,Z-isomers of di:methyl-10-methylene-dodeca-2,6-11-tri:en:al. mixts. - by gamma alkylation of tiglic acid and 3-chloro-2-methyl-6-methylene-octa-1,7-diene, followed by redn. and oxidn. of the prod. |
| 02/25/1993 | DE4125031C1 Prepn. of hydroxylated fatty acid, used to form polymer - comprises hydrolysing epoxidised fatty acid with oxirane rings in presence of activated catalyst e.g. alumina |
| 02/24/1993 | EP0528580A1 Preparation of titanium derivatives |
| 02/24/1993 | CN1069263A Catalyst for producing phthalic anhydride and process by using same |
| 02/24/1993 | CN1069262A Process for synthesis of acetic acid by methanol carbony lation under lower pressure in liquid phase |
| 02/24/1993 | CN1069261A Prepn. of high concentration formic acid under lower temp. |
| 02/24/1993 | CA2074932A1 Optical resolution of (+)-2-(4-isobutylphenyl) propionic acid |
| 02/23/1993 | US5189216 Isolation of a carboxylic acid from an aqueous solution thereof |
| 02/23/1993 | US5189215 Treating mixture of acetylsuccinate and aqueous mineral acid with steam in countercurrent in reactor cascade above boiling point of alcohol or azeotrope formed |
| 02/23/1993 | US5189214 Catalytic reaction of methyl ester, alcohol and water with carbon monoxide |
| 02/23/1993 | US5189213 Process for the carbonylation of acrylic acid |
| 02/23/1993 | US5189209 Liqiud phase oxidation of m-dialkyl benzene with oxygen in an acetic acid solvent; contacting with a noble metal catalyst; separation; filtration |
| 02/23/1993 | US5189208 Ibuprofen resolution |
| 02/23/1993 | US5189207 Process for the production of solid or paste-form products |
| 02/23/1993 | US5189203 Process for preparing acetic acid, methyl acetate, acetic anhydride or mixtures thereof |
| 02/23/1993 | US5189202 Process for the preparation of 3,3-dimethyl-4-pentenoic acid |
| 02/23/1993 | US5189200 Tartaric acid to malic acid isomers |
| 02/23/1993 | US5189189 Complexing with silver salt; separating complex fraction; dissociation; isolation |
| 02/23/1993 | US5189170 Process for the preparation of phenylacetic derivatives of thieno-pyridines |
| 02/23/1993 | US5189164 Processes for the synthesis of syn-(E)-3,5-dihydroxy-7-substituted hept-6-enoic and heptanoic acids and derivatives and intermediates thereof |
| 02/23/1993 | CA1313883C Process for the synthesis of 3-chloro-2,4,5-trifluorobenzoic acid |
| 02/18/1993 | WO1993002991A1 Process for ozonizing unsaturated fatty acid or lower alkyl ester thereof and oxidative decomposition of the resulting ozonide |
| 02/18/1993 | DE4126730A1 Prepn. of calcium formate from calcium hydroxide and formaldehyde - uses calcium hydroxide with short solubility time, in presence of inhibitor for auto-condensation of formaldehyde |
| 02/17/1993 | EP0527642A1 Process for simultaneously producing lactone and aromatic carboxylic acid |
| 02/17/1993 | EP0527623A2 Allylic oxidation of olefins |
| 02/17/1993 | CN1069021A Process for removing acetone from mixture comprising acetone, methyl acetate and methyl iodide |
| 02/16/1993 | US5187291 Reacting monocarboxylic anhydrides with organochlorosilanes in presence of organic bases, then vacuum distillation |
| 02/16/1993 | US5187281 Using a chiral phosphine compound |
| 02/16/1993 | US5187136 Asymmetric hydrogenation of aromatic-substituted olefins using organorhenium catalyst |
| 02/16/1993 | US5187135 Asymmetric hydrogenation of aromatic-substituted olefins using organo-cobalt catalyst |
| 02/16/1993 | US5186965 Calcium citrate malate composition |
| 02/16/1993 | CA2049274A1 Flurbiprofen intermediates & processes |
| 02/16/1993 | CA1313676C Purification of acetic acid with ozone |
| 02/16/1993 | CA1313671C Preparation of 4-pentenoates by isomerization |
| 02/15/1993 | CA2075776A1 Diastereomerically pure intermediates and their use in the preparation of (r)- or (s)-ketoprofen |
| 02/13/1993 | CA2074880A1 Allylic oxidation of olefins |
| 02/10/1993 | EP0526976A1 Perfluoroalkyl halides and derivatives |
| 02/10/1993 | EP0526974A1 Process for the preparation of acetic acid |
| 02/10/1993 | EP0526672A1 4-Hydroxyphenyl acetic acid |
| 02/10/1993 | CN1068829A Organometallic fluorenyl compounds, preparation, and use |
| 02/10/1993 | CN1068811A Process for one-step synthesis of metallic salt and complex by low temp. soild-phase reaction |
| 02/10/1993 | CN1068734A Therapeutic agent |
| 02/09/1993 | US5185469 Process for acylation or alkylation of aromatic compounds in hydrogen fluoride |
| 02/09/1993 | US5185463 Process for the preparation of an antiviral agent |
| 02/09/1993 | US5185462 Vapor phase carbonylation of alcohol in presence of halogen containing promoter and catalyst of noble metal bonded to inorganic oxide through silicon compound |
| 02/09/1993 | US5185457 Metal compound reactant subjected to rotation in direction opposite from that of the fatty acid |
| 02/09/1993 | US5185455 Method for improving the performance of VPO catalysts |
| 02/09/1993 | US5185309 High activity and selectivity; product of TIO2, SIO2, B2O3, V2O5, alkali metal oxide and SO3 |
| 02/09/1993 | CA2073889A1 Preparation of titanium derivatives |
| 02/04/1993 | WO1993002036A1 Novel process for aromatic bromination |
| 02/04/1993 | CA2112127A1 Novel process for aromatic bromination |
| 02/03/1993 | EP0525579A2 Process for preparing substituted hexemic acids |
| 02/03/1993 | EP0525506A2 A process for the alpha-monoalkylation of arylacetonitriles, arylacetoesters and arylacetic acids |
| 02/03/1993 | EP0525066A1 Preparation of 3,4,6-trifluorophthalic acid. |
| 02/03/1993 | EP0524985A1 Process for catalyst recovery. |
| 02/03/1993 | CN1068564A Preparing process of sorbic acid from crotonaldehyde and acetaldehyde |
| 02/02/1993 | US5183937 From mother liquor mixture of acetic acid, formic acids, acetic anhydride, and formic acetic anhydride |
| 02/02/1993 | US5183936 Two stage catalytic oxidation of propylene |
| 02/02/1993 | US5183935 Process for the preparation of 5-(2',4'difluorophenyl)-salicylic acid in pure form II |
| 02/02/1993 | US5183933 Continuous liquid phase catalytic oxidation of 2,6-dimethylnaphthalene |
| 02/02/1993 | US5183926 Sulfonating a bisphenol, followed by reduction, acylation and oxidation to carboxyl groups; intermediates for polyesters, polyamides |
| 02/02/1993 | US5183838 Nonhydrolyzing, storage-stable and solvent-soluble complex of dianhydride and organic base; varnishes, fibers and films; polyamic and polyimide polymers |
| 01/28/1993 | DE4124517A1 Sepn. of reactive fatty acids or ester(s) from their mixts. - by fractional distn. under vacuum of mixt. obtd. by saponification or transesterification of natural oil |
| 01/27/1993 | EP0524624A2 Organometallic fluorenyl compounds, preparation, and use |
| 01/27/1993 | CN1068324A High productivity process for production of maleic anhydride |
| 01/26/1993 | US5182408 Process for preparation of stable aqueous solutions of zirconium chelates |
| 01/26/1993 | US5182246 Complex metal carbonyl |
| 01/26/1993 | CA1313178C Process for the carbonylation of olefinically unsaturated compounds with a palladium catalyst |
| 01/26/1993 | CA1313177C Process for the carbonylation of conjugated dienes |
| 01/21/1993 | WO1993001199A1 Chiral phospholanes via chiral 1,4-diol cyclic sulfates |
| 01/21/1993 | WO1993001156A1 Ibuprofen resolution |
| 01/21/1993 | WO1993001155A1 High productivity process for the production of maleic anhydride |
| 01/21/1993 | CA2111971A1 Ibuprofen resolution |
| 01/20/1993 | EP0523727A2 Process for preparing catalysts used for production of methacrolein and methacrylic acid |
| 01/20/1993 | CN1068053A Process for transformation of vanadium/phosphorus mixed oxide catalyst precursors into active catalysts for production of maleic anhydride |
| 01/19/1993 | US5180850 Crystalline magnesium valporate and a method for the preparation thereof |
| 01/19/1993 | US5180849 Process for producing purified terephthalic acid |
| 01/19/1993 | US5180671 Method for producing optically active cyclopropane carboxylic acid |
| 01/19/1993 | CA1312879C Process for the preparation of a basic salt, salt thus prepared and lubricating oil compositions containing such a salt |
| 01/14/1993 | DE4123062A1 Calcium formate prepn. with high yield and quality - by reacting calcium hydroxide and methanol, distilling off methanol and crystallising the prod., used as e.g. cement setting accelerator, etc. |
| 01/13/1993 | EP0522871A1 Catalyst and process for producing phthalic anhydride |
| 01/13/1993 | EP0522709A2 Polymerization inhibitors for acrylic acids and esters |
| 01/13/1993 | EP0522476A1 Method for separating linear aliphatic compounds terminated by fonctional groups |
| 01/13/1993 | EP0521958A1 Process for producing branched fatty acids and their esters. |
| 01/13/1993 | CA2073112A1 Process for separating off aliphatic straight-chain compounds having terminal functional groups |