| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
|---|
| 06/26/1996 | CN1032133C Continuous process for simultaneous preparation of acetic acid and acetic anhydride |
| 06/26/1996 | CN1032132C Process for preparation of arude terphthalic acid suitable for reduction to prepane purified terephthalic acid |
| 06/25/1996 | US5530158 Chemical intermediate for antibacterials |
| 06/25/1996 | US5530144 Process for producing a phosphorus-vanadium oxide catalyst precursor, process for producing a phosphorus-vanadium oxide catalyst, and process for producing maleic anhydride by vapor phase oxidation using the catalyst |
| 06/20/1996 | WO1996018597A1 Crystallization of adipic acid |
| 06/19/1996 | EP0717031A1 Process for recovering the light noble products contained in the distillation residues from the processes of production of acrylic acid and its esters |
| 06/19/1996 | EP0717030A1 Recovery of ester monomers from polyester resins |
| 06/19/1996 | EP0717029A2 Process for a rectificative separation of (meth)acrylic acid from a hydrophobic mixture containing crude (meth)acrylic acid |
| 06/19/1996 | EP0717028A1 Method and apparatus for obtaining formic acid |
| 06/19/1996 | CN1032060C Process for separating naphthenic acid from heavy lubricating-oil distillation |
| 06/18/1996 | US5527957 Oxidation of p-xylene in acetic acid, depositing slurryon moving filter, washing, recovering, recycling |
| 06/18/1996 | US5527956 Process for the oxidation of aromatic methyl groups |
| 06/18/1996 | US5527954 Process for the production of 2-fluoroisobutyric acid or its ester |
| 06/18/1996 | US5527945 Diphenylheteroalkyl derivatives, the preparation thereof and drugs and cosmetics prepared therefrom |
| 06/15/1996 | CA2164556A1 Separation by rectification of (meth)acrylic acid from a mixture containing (meth)acrylic acid and an inert hydrophobic organic liquid having a boiling point higher than that of (meth)acrylic acid as main constituents and also lower al ehydes as secondary constituents |
| 06/13/1996 | WO1996017818A1 Production of hydroxy acids |
| 06/13/1996 | WO1996017817A1 Preparation of pentenoic acid |
| 06/13/1996 | CA2206475A1 Preparation of pentenoic acid |
| 06/12/1996 | EP0715615A1 Method for preparing (+)-(1r)-cis-3-oxo-2-pentyl-1-cyclopentaneacetic acid |
| 06/12/1996 | CN1124243A Preparation of monochloro acetic acid |
| 06/12/1996 | CN1031993C Method for separating unsaponifiables from organic acid |
| 06/12/1996 | CN1031992C Quinone derivatives and pharmaceutical use |
| 06/11/1996 | US5525726 Process for the preparation of an antiviral agent |
| 06/05/1996 | EP0714700A2 Process of manufacturing of a catalyst consisting of a carrier and a catalytic active mass of oxide deposited on the surface of the carrier |
| 06/05/1996 | EP0714447A1 Process for preparing (l)-2-chlorpropionic acid and its salts |
| 06/05/1996 | EP0714385A1 Hydroformylation process |
| 06/05/1996 | EP0151581B2 Phosphorus-containing metal salt/olefin compositions and reaction products of same with active sulfur |
| 06/05/1996 | DE19500056C1 New organic cpds. of niobium, tantalum or titanium for electro-ceramics |
| 06/04/1996 | US5523487 Quaternary ammonium carbonate compositions and preparation thereof |
| 06/04/1996 | US5523480 Process for purifying unsaturated carboxylic acids using distillation and melt crystallization |
| 06/04/1996 | US5523479 Process for the preparation of ethercarboxylic acids |
| 06/04/1996 | US5523476 Processes for producing tetrafluorophthalic anhydride and fluorobenzoic acids |
| 06/04/1996 | US5523474 Oxidation of p-xylene by injection of oxygen into circulating fluid in the presence of solvent, catalyst, and initiator |
| 06/04/1996 | US5523473 Method of producing naphthalenedicarboxylic acids and diaryldicarboxylic acids |
| 06/04/1996 | US5523472 Catalytic oxidation of 2-bromo-5-fluoro-toluene with oxygen yields 2-bromo-5-fluoro-benzoic acid which is then aminated |
| 06/04/1996 | US5523220 Method for producing 3,4-dihydroxyphthalic acid |
| 06/04/1996 | US5522995 Process for recovering organic acids from aqueous salt solutions |
| 05/30/1996 | WO1996016027A1 Matrix metalloprotease inhibitors |
| 05/30/1996 | WO1996016017A1 Novel arylpropionic derivatives with analgesic action and the process for the preparation thereof |
| 05/30/1996 | WO1996015784A3 2,2-dichloroalkane carboxylic acids, process for preparing the same, medicament containing the same, and use thereof for treating insulin resistance |
| 05/30/1996 | WO1996015784A2 2,2-dichloroalkane carboxylic acids, process for preparing the same, medicament containing the same, and use thereof for treating insulin resistance |
| 05/30/1996 | CA2163834A1 Preparation of a catalyst consisting of a carrier and a catalytically active oxide material applied to the surface of the carrier |
| 05/29/1996 | EP0713856A1 Process for preparing brominated or chlorinated aromatic carboxylic acids |
| 05/29/1996 | EP0713854A1 Process for purifying crude (meth)acrylic acid |
| 05/29/1996 | EP0609260B1 Improved overbased carboxylates |
| 05/29/1996 | CN1123287A Catalyst systems and process for producing broad molecular weight polyolefin |
| 05/28/1996 | US5521134 Method for regenerating vanadium/phosphorus oxidation catalysts |
| 05/24/1996 | CA2162950A1 Purification of crude (meth)acrylic acid |
| 05/23/1996 | WO1996015095A1 Method of preparing tartaric acid |
| 05/23/1996 | DE4440916A1 Removal of heavy metal salt catalysts and opt. organic impurities from di:carboxylic acids |
| 05/23/1996 | DE4440891A1 Multi:metal oxide useful as catalyst esp. in gas phase oxidn. of acrolein to acrylic acid |
| 05/23/1996 | DE4440733A1 Removal of heavy metals salts from di:carboxylic acids, esp. adipic acid |
| 05/22/1996 | EP0712835A2 Process for the preparation of alpha-ketocarbonic acid esters |
| 05/22/1996 | EP0712833A2 Process for the preparation of 2-phenoxymethylbenzoic acids |
| 05/22/1996 | EP0712832A1 Process for recovery of aromatic acid or ester and polyol from waste polyester resins |
| 05/22/1996 | EP0712831A1 Selective dehalogenation method |
| 05/22/1996 | EP0712830A1 Process for the recovery of adipic acid |
| 05/22/1996 | EP0712829A2 New di-aldehyde and its use in the preparation of new urethanes for molded articles |
| 05/22/1996 | EP0712651A1 Process for recovering a substance or a group of substances from a mixture |
| 05/22/1996 | CN1031823C Production of hydrocarbon derivatives |
| 05/21/1996 | US5519149 Vanadium pentoxide-phosphorus pentoxide-silicon dioxide |
| 05/21/1996 | US5518703 Production of finely divided rare earth ammonium oxalates/finely divided rare earth oxides |
| 05/19/1996 | CA2162833A1 Process for obtaining adipic acid |
| 05/17/1996 | WO1996014288A1 Catalyst recovery and dialkyl ester synthesis from an adipic acid synthesis waste stream |
| 05/17/1996 | WO1996014287A1 Method for preparing carboxylic acids by carbonylation in the presence of rhodium |
| 05/17/1996 | WO1996014286A1 Method for preparing carboxylic acids by carbonylation in the presence of iridium |
| 05/17/1996 | WO1996014146A2 VAPOR PHASE CATALYTIC OXIDATION OF n-BUTANE TO MALEIC ANHYDRIDE INCORPORATING IN SITU CATALYST CALCINATION/ACTIVATION |
| 05/17/1996 | CA2161824A1 Polyurethane and molded article comprising the same |
| 05/15/1996 | EP0711746A1 Process for preparing hydroxycarboxylic acids |
| 05/15/1996 | EP0711745A1 Process for production of acrylic acid |
| 05/15/1996 | EP0711269A1 Process for recovering organic acids |
| 05/15/1996 | DE4439947A1 2,2-Dichloralkancarbonsäuren, Verfahren zu ihrer Herstellung und diese enthaltende Arzneimittel 2,2-Dichloralkancarbonsäuren, processes for their preparation and pharmaceutical compositions containing them |
| 05/15/1996 | DE19503277C1 Kation- und/oder Ampholigomere Cation and / or Ampholigomere |
| 05/15/1996 | CN1122592A Basic calcium carboxylates |
| 05/15/1996 | CN1122325A Process for production of phenyllatic acid derivative |
| 05/15/1996 | CN1122324A Process for the preparation of trichloroacetyl chloride |
| 05/15/1996 | CN1122323A Method for refining petroleum naphthenic acid |
| 05/15/1996 | CN1031793C Technology for recovering cis-anhydride with n-butyl alcohol as solvent |
| 05/15/1996 | CA2161389A1 Process of preparing w-hydroxy acids |
| 05/14/1996 | US5516966 Separation of olefin-paraffin mixtures |
| 05/14/1996 | US5516903 Viricides |
| 05/14/1996 | US5516735 Increased iodide concentration, acetic anhydride from methyl acetate or dimethyl ether carbonylation |
| 05/14/1996 | US5516406 Process for purifying acids formed during liquid phase oxidation of butane |
| 05/09/1996 | WO1996013330A1 Improved process for the calcination/activation of v/p/o catalyst |
| 05/08/1996 | EP0710643A1 Process for refining methacrylic acid |
| 05/08/1996 | EP0710216A1 Process for the manufacture of a zeolite |
| 05/08/1996 | EP0573475B1 Basic calcium aluminium hydroxide dicarboxylates, method for preparing them and use thereof |
| 05/08/1996 | CN1122131A Process for producing acetic acid |
| 05/08/1996 | CN1121913A Sodium monochloroacetate having enhanced implementation properties |
| 05/08/1996 | CN1031750C Removal of oil from naphthenic acid as raw material by aggregation |
| 05/07/1996 | US5514361 Magnesium aluminum hydroxide hydrates, reduced carbonate contamination |
| 05/02/1996 | WO1996012695A1 Cation and vanadium substituted heteropolyacid catalysts for vapor phase oxidation |
| 05/01/1996 | EP0708752A1 Magnesium derivative preparation process |
| 05/01/1996 | EP0651734B1 Method and device for producing monocarboxylic acids from carbohydrates, carbohydrate derivates or primary alcohols |
| 05/01/1996 | EP0552255B1 Manufacture of high-purity hydroxyacetic acid |
| 05/01/1996 | CN1121705A Method of preparing caesium salts from caesium aluminium alum |
| 05/01/1996 | CN1121504A A catalyst for the production of acrylic acid |
| 05/01/1996 | CN1031703C Process for preparing double oxalate of rare earth ammonium |
| 05/01/1996 | CN1031702C Method for production of n-caproic acid by oxidation of secondary octanol wth nitric acid |
| 04/30/1996 | US5512595 Substituted phenoxyisobutyric acids and esters |