C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides

Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
11/1997
11/19/1997	EP0807099A1 Process for preparing nucleus-halogenated benzoyl chlorides
11/19/1997	EP0582668B1 Chiral tridentate bis(phospholane) ligands
11/19/1997	CN1165515A Process for producing 2-('omega'-alkoxycarbonylalkanoyl)-4-butanolide and long-chain 'omega'-hydroxy carboxylic acid
11/19/1997	CN1165135A Process for producing aromatic carboxylic acid
11/19/1997	CN1165055A Catalyst and process for producing unsaturated aldehyde and unsaturated acid
11/18/1997	US5689000 Process for preparing carboxylic acid salts and catalysts useful in such process
11/18/1997	US5688970 Catalytic oxidation
11/18/1997	CA2048355C P-oxybenzoic acid derivatives, process for the preparation thereof and use thereof as drug
11/12/1997	EP0806407A2 Reduction of carbonyl impurities in alpha, beta-unsaturated acids and esters
11/12/1997	EP0805795A1 Novel aromatic amides, method for preparing and compositions containing same, and use thereof as pesticides
11/12/1997	EP0805793A1 Preparation of optically active aliphatic carboxylic acids
11/12/1997	CN1164850A Method of preparing tartaric acid
11/12/1997	CN1164527A Method for producing formic acid by using methanol-water rectifying tower residue produced in course of producing sodium hyposulfite
11/12/1997	CN1164526A Synthesis method for low carbon mixed organic acid
11/11/1997	US5686638 Process for the preparation of mono- or dicarboxylic acids from aldehydes, from their full acetals or hemiacetals or from mixtures thereof
11/11/1997	US5686630 Purifying cyclic esters by aqueous solvent extraction
11/11/1997	US5686586 Polycyclic aromatic derivatives, process for preparing the same and pharmaceutical and cosmetic compositions containing the same
11/11/1997	US5686373 Polymetal oxide materials
11/11/1997	US5686275 Synthesis of homochiral 2-hydroxy acids
11/11/1997	US5686055 Process for recovering phthalic anhydride and hydrogen chloride from plastic materials
11/11/1997	CA2077372C Catalytic system and its application for oxydehydrogenation of saturated carboxylic acids and oxydation of aldehydes into acids
11/11/1997	CA1339534C Process for the production of maleic anhydride
11/07/1997	CA2204576A1 Reduction of carbonyl impurities in alpha, beta-unsaturated acids and esters
11/06/1997	WO1997041087A1 Process for the manufacture of hydroxycarbonyl compounds
11/06/1997	WO1997041086A1 Process for the manufacture of oxygenates
11/06/1997	WO1997041083A1 Process for the preparation of fluoro compounds from the corresponding amines
11/06/1997	WO1997041063A1 Salt of boehmite alumina
11/06/1997	CA2252703A1 Process for the manufacture of hydroxycarbonyl compounds
11/06/1997	CA2252546A1 Process for the manufacture of oxygenates
11/05/1997	EP0805210A2 Process for the isolation of 2-keto-L-gulonic acid
11/05/1997	EP0805140A1 Process for producing 4,5-dichloro-2-methylbenzoic acid
11/05/1997	EP0804963A1 Process for the tranformation of a vanadium/Phosphorous Mixed Oxide catalyst precursor into the active catalyst for the production of maleic anhydride
11/05/1997	EP0804406A1 Process for the preparation of 3-phenylpropionic acid
11/05/1997	EP0804405A1 Process for producing optically active 2-halogen propionic acids
11/05/1997	EP0804403A1 A method for forming two terminal carboxylic acid groups from an ozonide
11/05/1997	EP0804402A1 Organic compounds and processes for their manufacture
11/05/1997	EP0804401A1 Process for the preparation of 3-phenylpropanal
11/05/1997	EP0655993B1 Improved process for the preparation of 3-pentenoic acid from butadiene
11/05/1997	CN1163882A Optimization of water content in oxygen-based oxidation of P-xylene
11/05/1997	CN1163881A Phosgenation under pressure of acids and/or anhydrides for production of acid chlorides
11/04/1997	US5684193 Isomerization of hexafluoropropene oxide with liquid complex ammonium hydrofluoride
11/04/1997	US5684188 Continuous oxidation catalysis of propylene to acrolein, acrylic acid or mixtures with diluents
11/04/1997	US5684187 Process for producing highly pure terephthalic acid
11/04/1997	US5684186 Process for production of phenyllactic acid derivative
11/04/1997	US5684046 Hydrogenated naphthalenes and related LTB4 antagonists
11/04/1997	US5683553 Purification from mixture with 4,5-dichlorophthalic anhydride
11/04/1997	US5683492 Withdrawing purge gas from acetic acid synthesis, separating purge gas using adsorption and recycling gas fraction rich in carbon monoxide upstream of acetic acid synthesis stage
11/02/1997	CA2204201A1 Process for preparing 4,5-dichloro-2-methylbenzoic acid
10/1997
10/29/1997	EP0803492A1 Method for separating and purifying hydroxynaphthalenecarboxylic acids
10/29/1997	EP0802897A1 Novel compounds
10/29/1997	EP0802896A1 Method for purifying crude naphthalenedicarboxylic acid
10/29/1997	EP0684941B1 Lactic acid extraction and purification process
10/29/1997	CN1163609A Modified polyunsatuated fatty acids
10/29/1997	CN1163259A Catalystic rectification and hydrolization technology and equipment for methyl acetate
10/28/1997	US5681790 Catalyst for preparing methacrylic acid
10/28/1997	US5681728 Method and apparatus for the recovery and purification of organic acids
10/23/1997	WO1997038972A1 Process for manufacturing sulphates of longer chain branched alkanols and alkoxylated alkanols
10/23/1997	WO1997038957A1 Branched surfactant manufacture
10/23/1997	WO1997038956A1 Process for the manufacture of surfactants containing branch chain alkyl groups
10/22/1997	CN1162954A Preparation of carboxylic acids or related esters by carbonylation in the presence of iridium
10/22/1997	CN1162910A Hydroxycitric acid concentrate and method of making
10/22/1997	CN1162590A Chromium gluconate and preparation thereof
10/22/1997	CN1162589A Process for manufacture of alpha-beta-unsaturated organic carboxylic acids
10/22/1997	CN1036178C Equipment and technology for preparing organic acid with bipolar film electrodialysis
10/21/1997	US5679848 Process for the preparation of terephthalic acid and its isomers
10/21/1997	US5679847 Oxidation of mixture of p-xylene and p-tolualdehyde with molecular oxygen by using a lower aliphatic monocarboxylic acid as solvent in presence of a heavy metal compound and a bromine compound
10/21/1997	US5679846 Process for the production of terephalic acid
10/21/1997	US5679837 Process for producing acetic acid or methyl acetate and catalyst therefor
10/21/1997	US5679832 Method for making α,β-unsaturated-β-trifluoromethyl-carboxylates and related compounds
10/16/1997	WO1997037958A2 Preparation of aromatic hydroxycarboxylic acids and dialkali metal salts thereof
10/16/1997	WO1997037751A1 Process for isolation of dicarboxylic acids and hydroxycarboxylic acids
10/15/1997	EP0801050A1 Process for the preparation of acetic acid
10/15/1997	EP0800502A1 Reactive distillation process and equipment for the production of acetic acid and methanol from methyl acetate hydrolysis
10/15/1997	EP0800501A1 Production of trialkylacetic acids using a solid cationic resin catalyst system
10/15/1997	EP0594608B1 Chiral catalysts for enantioselective synthesis
10/15/1997	CN1162302A Method for preparing carboxylic acids by carbonylation in presence of iridium
10/15/1997	CN1162273A Improved process for calcination/activation of V/P/O catalyst
10/15/1997	CN1161955A Process for preparation of chloracetic acid
10/14/1997	US5677473 Process for the preparation of branched chain fatty acids and alkyl esters thereof
10/14/1997	US5677469 Process for resolving chiral acids with 1-aminoindan-2-ols
10/14/1997	US5677261 Premoisturing catalyst support with adhesive
10/14/1997	US5676838 Adsorption of citric acid and lactic acid by using dealuminized zeolite type y and zeolit zsm-5 respectively, while maintaining ph acidic, desorbtion takes place with alkali metal hydroxide or ammonical solution at higher ph
10/09/1997	WO1997037032A2 Preparation of microbial polyunsaturated fatty acid containing oil from pasteurised biomass
10/09/1997	WO1997036996A2 Process for the preparation of a granular microbial biomass and isolation of valuable compounds therefrom
10/09/1997	WO1997036851A1 Process for decolorizing cyclopropanecarboxylic acid
10/09/1997	WO1997036850A1 Synthesis of solid, powdery rare earth carboxylates by a precipitation method
10/09/1997	WO1997036849A1 Processes for the oxidation of alkanes
10/09/1997	WO1997036673A1 Method for separating a catalyst by membrane electrodialysis
10/09/1997	WO1997029837A3 Process for separating substances using a suitable membrane
10/09/1997	CA2788661A1 Preparation of microbial polyunsaturated fatty acid containing oil from pasteurised biomass
10/09/1997	CA2579516A1 Process for the preparation of a granular microbial biomass and isolation of valuable compounds therefrom
10/09/1997	CA2261268A1 Processes for the oxidation of alkanes
10/09/1997	CA2250934A1 Synthesis of solid, powdery rare earth carboxylates by a precipitation method
10/08/1997	EP0799795A2 Vanadium-phosphorus oxide, method for production thereof, catalyst for vapor phase oxidation formed of the oxide, and method for partial vapor phase oxidation of hydrocarbon
10/08/1997	EP0799642A1 Process for the preparation of supported catalyst for synthesis of methacrolein and methacrylic acid
10/08/1997	EP0799179A1 Purification process for aromatic dicarboxylic acids
10/08/1997	EP0799178A1 Improved process for the purification of aromatic polycarboxylic acids
10/08/1997	EP0799177A1 Process for preparing solid, free-flowing water-soluble salts of aryloxy-c 1-c 4-alkane carboxylic acids
10/08/1997	EP0799173A1 Carbonylation of olefins
10/08/1997	EP0799155A1 Manufacture of carbonyl fluoride

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