Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › 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)
09/1998
09/17/1998DE19710429A1 Verfahren zum Behandeln von rohem Phthalsäure-Anhydrid A method of treating crude phthalic acid anhydride
09/17/1998CA2283184A1 2-substituted benzoyl-cycloalkyl-1-carboxylic acid derivatives
09/17/1998CA2282492A1 Method for extracting (meth)acrylic acid
09/16/1998EP0864558A1 Process for producing maleic acid
09/16/1998EP0864557A1 Industrial process for the continuous production of sodium orthohydroxymandelate
09/16/1998EP0864361A2 Poly(zinc carboxylate) catalysts for production of polyalkylene carbonates
09/16/1998EP0864358A1 Supported noble metal catalyst for hydrodehalogenating alpha-halogenated organic acids and process for preparing said catalyst
09/16/1998EP0863865A1 Acid-salt metathetic process
09/16/1998CN1193009A Process for making adipic acid and dibasic acid
09/16/1998CN1039813C Compound of cis-diammo-1,1-cyclopentyl-dicarbozylate platinum (II) with anti-cancer effect and its synthesis method
09/15/1998US5808148 Preparation of α,β-unsaturated carboxylic acids and esters
09/15/1998US5808143 Catalyst based on oxides of Fe, Co, Bi and Mo
09/15/1998US5808142 Process for the preparation of 2-hydroxynaphthalene-6-carboxylic acid
09/15/1998US5808133 Oxidative cleavage of the corresponding monoolefin
09/15/1998US5808106 Method for producing 2-(ω-alkoxycarbonyl alkanoyl)-4-butanolide and a long-chain ω-hydroxycarboxylic acid
09/15/1998US5807531 Oxidation catalyst
09/15/1998CA2117031C Silyl bridged metallocenes and use thereof
09/15/1998CA2112140C Process for preparing pyromellitic dianhydride
09/15/1998CA2067525C Organometallic fluorenyl compounds, preparation and use
09/15/1998CA2052368C Perfluorinated polyimide, perfluorinated poly(amic acid), starting compounds therefor, and methods for preparing them
09/15/1998CA1340047C 7-substituted derivatives of 3,5-dihydroxyhept-6-ynoic acid, a process for the preparation thereof, the use thereof as pharmaceuticals, and intermediates
09/11/1998WO1998039345A1 6,6'-bis-(1-phosphanorbornadiene) diphosphines
09/11/1998WO1998039283A1 Preparation of solid, powdery rare earth carboxylates by evaporation method
09/11/1998WO1998039282A1 Low water diamine/dicarboxylic acid salt preparation
09/11/1998CA2253499A1 Preparation of solid, powdery rare earth carboxylates by evaporation method
09/10/1998DE19709392A1 Verfahren zur Extraktion von (Meth)acrylsäure A process for the extraction of (meth) acrylic acid
09/09/1998EP0863124A1 Process for the preparation of (meth)acrylic acid
09/09/1998EP0862549A1 Process for preparing optically active carboxylic acids
09/09/1998EP0862548A1 Method for the development of delta-lactones and hydroxy acids from unsaturated fatty acids and their clycerides
09/09/1998EP0765348B1 Continuous process for production of functionalized olefins
09/09/1998CN1192707A Method for separating palladium catalyst
09/09/1998CN1192474A Prodn. process for extracting sodium citrate from citric acid fermentation liquor
09/09/1998CN1192432A Iridium-catalysed carbonylation process for prodn. of acetic acid
09/09/1998CN1039710C Hydroxycarbonylation of butadiene
09/09/1998CN1039709C Process for preparing carboxylic acids
09/03/1998WO1998038157A1 Process for the preparation of stable, non-hygroscopic salts of l(-)carnitine and alkanoyl l(-)carnitines
09/03/1998WO1998038150A1 Production of terephthalic acid
09/03/1998WO1998038149A1 Process for the manufacture of carboxylic acids
09/03/1998WO1998037967A1 Method for producing shell catalysts for catalytic gas-phase oxidation of aromatic hydrocarbons
09/03/1998WO1998037965A1 Method for producing acid phthalic anhydride and an appropriate shell catalyst containing titanium-vanadium-cesium
09/03/1998WO1998017628A3 A solid-phase technology for the preparation of amides
09/03/1998DE19707943A1 Verfahren zur Herstellung von Phthalsäureanhydrid und Katalysator hierfür A process for the preparation of phthalic anhydride and catalyst therefor
09/03/1998CA2282350A1 Process for the manufacture of carboxylic acids
09/02/1998EP0861821A1 Process for the preparation of acrylic acid from acroleine by redox reaction
09/02/1998EP0861820A2 Method for recovering acrylic acid
09/02/1998EP0861225A1 Hydroformylation process
09/02/1998EP0861224A1 Process for preparing fluorocarboxylic acid halides
09/02/1998EP0773948A4 High activity ruthenium or osmium metal carbene complexes for olefin metathesis reactions and synthesis thereof
09/02/1998CN1192262A Effluent gas treatment
09/02/1998CN1192198A Method and apparatus for preparing purified terephthalic acid
09/02/1998CN1191858A Process for production of ruthenium (III) acetate solution
09/02/1998CN1191856A Process for preparation of cyclopropylacetylene derivatives
09/01/1998US5801279 Method for removing iodine compounds contained in organic medium
09/01/1998US5801278 Low water diamine-dicarboxylic acid salt preparation
09/01/1998US5801277 Solid catalyst for etherification reaction and production process for ether compound using this catalyst
09/01/1998US5801276 Oxidation of hydroxypivalaldehyde with hydrogen peroxide
09/01/1998US5801275 Method for forming two terminal carboxylic acid groups from an ozonide
09/01/1998US5801273 Methods and devices for controlling the reaction rate of a hydrocarbon to an intermediate oxidation product by pressure drop adjustments
09/01/1998US5801261 Bisphosphines as catalysts for asymmetric reactions
09/01/1998US5801253 Retinoic acid X-receptor ligands
09/01/1998US5800573 Incorporated into polymer melts or added to monomers
08/1998
08/27/1998WO1998037054A1 Method for isolating 3-[2-chloro-4-(trifluoromethyl)-phenoxy]-benzoic acid
08/27/1998WO1998037052A1 Preparation of aryl bromoaryl ketones and carboxylic derivatives thereof
08/27/1998WO1998037051A1 Method for separating phthalic anhydride/maleic anhydride mixtures by distillation
08/27/1998WO1998037050A1 A process for the recovery of lactic acid
08/27/1998WO1998037049A1 Method for producing carboxylic acids or their esters by carbonylation of olefins
08/27/1998DE19706876A1 Verfahren zur Herstellung von Carbonsäuren oder deren Estern durch Carbonylierung von Olefinen A method for producing carboxylic acids or their esters by carbonylation of olefins
08/27/1998CA2281828A1 Method for isolating 3-[2-chloro-4-(trifluoromethyl)-phenoxy]-benzoic acid
08/27/1998CA2281599A1 A process for the recovery of lactic acid
08/27/1998CA2231023A1 Process for the production of acrylic acid from acrolein by redox reaction and use of a solid composition of mixed oxides as a redox system in the said reaction
08/26/1998EP0860423A1 Process for producing aromatic carboxylic acid and apparatus therefore
08/26/1998EP0860419A1 Process for producing 2,2'-bis (hydroxymethyl) alkanal and 2,2,'-bis (hydroxymethyl) - alkanoic acid
08/26/1998EP0859812A1 Process for improving color of basic metal organic salts and stabilizing halogen-containing polymers therewith
08/26/1998EP0859753A1 Process for dicarboxylating dihydric phenols
08/26/1998CN1191214A Iridium catalysed carbonylation process for production of acetic acid
08/26/1998CN1191158A Alkane oxidation catalyst and its preparing method
08/25/1998US5798320 Gelation additive for hydraulic fracturing fluids
08/25/1998CA2119629C Bis fluorenyl metallocenes and use thereof
08/20/1998WO1998035929A1 Dicarboxylic acid crystallizates
08/20/1998WO1998035925A1 Method for preparing cleaved products from castor oil or derivatives thereof
08/20/1998CA2280967A1 Method for preparing cleaved products from castor oil or derivatives thereof
08/20/1998CA2280592A1 Dicarboxylic acid crystallizates
08/20/1998CA2229946A1 Process for producing aromatic carboxylic acid and apparatus therefor
08/19/1998EP0858990A1 Process for producing purified terephthalic acid
08/19/1998EP0858989A1 Method of controlling the quality of terephthalic acid
08/19/1998EP0858835A1 Oxidation catalytic system and oxidation process
08/19/1998EP0858443A1 4-phenyl-4-oxo-butanoic acid derivatives with kynurenine-3-hydroxylase inhibiting activity
08/19/1998EP0750602B1 Process for producing alcohols and/or aldehydes
08/19/1998EP0724557B1 A process for separating lipophilic compounds
08/19/1998EP0690836B1 Carboxylic acid isomerisation method
08/19/1998CN1190950A Methods and device for making intermediate oxidation products by controlling conversions and temperatures in an atomized liquid
08/18/1998US5795987 Luminescence
08/18/1998US5795615 Process for producing metal carboxylates for use as animal feed supplements
08/18/1998CA2085008C Calcium citrate malate composition
08/18/1998CA2059689C Process for producing carboxylated compound
08/18/1998CA2023679C Method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its precursor
08/17/1998CA2229647A1 Process for producing purified terephthalic acid
08/13/1998WO1998034897A1 Process for preparing 3-hydroxy-3-methylbutyric acid or its salts
08/13/1998WO1998030529A3 Preparation of carboxylic compounds and their derivatives
08/13/1998WO1998030528A3 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof
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