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)
09/1991
09/11/1991EP0445446A1 Purification of crude isophthalic acid
09/11/1991EP0416085A4 Process for the preparation of phenylpyruvic acid from benzyl chloride
09/11/1991CN1054417A Process for preparing basic calcium aluminium hydroxide dicarboxylates, and their use
09/11/1991CA2037873A1 Process for the production of calcium formate and the use of same as feed additive
09/10/1991US5047584 Process for the preparation of pentahaloethoxy benzoyl halide compounds
09/10/1991US5047583 Production of carboxylic acids
09/10/1991US5047582 With hydrogen peroxide first without catalyst and then with catalyst
09/10/1991US5047581 Isolation of cis-isomers from isomeric mixtures of cis/transcyclopropanecarboxylates
09/10/1991US5047560 Process for producing highly pure 3,3',4,4'-biphenyltetracarboxylic acid or dianhydride thereof
09/10/1991US5047380 Ceramic materials, method of preparing the same and hydrogenation and oxidation processes using the same
09/10/1991US5047377 Process for the purification and recovery of the contaminated solution of the catalyst produced on carbonylation of methanol and/or methyl acetate and/or dimethyl ether
09/10/1991CA1288777C N-fluoropyridinium salt and process for preparing same
09/05/1991WO1991013045A1 Organic polyacids derived from humic acids and their utilisation in agriculture
09/05/1991DE4006370A1 Preventing metal corrosion during prodn. of acyl-chloride(s) - using metals with electro-negativity of above 1.2
09/04/1991EP0445025A2 Alkaline earth metal salts of oxa-polyacids, process for their preparation and pharmaceutical compositions containing them
09/04/1991EP0444171A1 Asymmetric synthesis of acids by the palladium catalysed hydrocarboxylation of olefins
09/04/1991EP0253896B1 Process for producing methacrylic acid and catalysts for the process
09/03/1991US5045573 Photoinitiators for photopolymerization of unsaturated systems
09/03/1991US5045459 Treatment in fluidzed bed, free-flowing, improved bulk handling
09/03/1991US5045297 Separation of carbon monoxide from product stream resulting from oxidation of butane to maleic anhydride, supported platinum or palladium catalyst
09/03/1991US5045122 Alcohol or glycol, aprotic solvent, alkoxide or hydroxide
09/03/1991CA1288440C Halogenobenzoic acid derivatives and their preparation
09/02/1991WO1991013189A1 Process for the prevention of corrosion on metal materials in the production of carboxylic acid chlorides
09/02/1991CA2081374A1 Process for the prevention of corrosion on metal materials in the production of carboxylic acid chlorides
09/01/1991CA2011269A1 Purification of crude isophthalic acid
08/1991
08/28/1991EP0443856A1 Preparation of isopropylidene bis(phthalic acid) and isopropylidene bis (phthalic anhydride)
08/28/1991EP0443355A1 Method for the production of anhydrous tin dicarboxylate dihalides
08/28/1991CN1054068A Process for lithiation of 1,3-bis (trifluoromethyl) benzene
08/28/1991CN1054062A Synthetic technology for p- phthalyl chloride
08/28/1991CA2036920A1 Oxa-polyacid alkaline-earth metal salts; process for preparing the same and pharmaceutical compositions containing them
08/23/1991CA2035239A1 Maleic anhydride catalysts and process for their manufacture
08/21/1991EP0442816A1 Alpha-hydroxylic acids, process for preparing them and use
08/21/1991EP0442708A2 Cosmetic composition
08/21/1991EP0442517A1 Preparation process of catalysts for producing methacrylic acid
08/21/1991EP0442340A2 Process for the preparation of an organolithium compound starting from 1,3-bis(trifluoromethyl)-benzene
08/21/1991EP0442181A1 Separation of hydroxy paraffinic dicarboxylic acids from olefinic dicarboxylic acids
08/21/1991EP0441979A1 Optically active 2-(alkyl-substituted phenyl)-propionic acid derivative and optical resolution of ( )-1-methyl-3-phenylpropylamine
08/21/1991EP0252964B1 Catalytic method for producing fluoroaromatic compounds using substituted pyridinium salts
08/20/1991US5041649 Preparation of carbonyl halides
08/20/1991US5041647 Process for producing trifluoroacetic acid and trifluoroacetyl chloride
08/20/1991US5041646 Process for producing 2-methyl-2-butenoic acid
08/20/1991US5041645 Method for the preparation and recovery of alkali metal citrates
08/20/1991US5041642 Preparation of β, γ-unsaturated carboxylic acids
08/20/1991US5041640 Process for mono-, di-, trisubstituted acetic acids
08/20/1991US5041639 Polysubstituted derivatives of naphtalene, their process of preparation and their application in the cosmetic and pharmaceutical fields
08/20/1991US5041638 Alkenoic acid derivatives
08/20/1991US5041634 Process for the preparation of carboxylated aromatic hydroxy compounds
08/20/1991US5041633 Catalytic oxidation of alkyl or carbonyl substituted benzenes or naphthalene
08/20/1991US5041622 Three-step process for making substituted carboxylic acids and derivatives thereof
08/20/1991US5041604 Process for producing di(aryloxy)alkane
08/20/1991US5041561 Gamma-terpinene diadducts
08/20/1991US5041233 Process for preparing soap-acyl isethionate compositions
08/20/1991US5041205 Hydrocarbon/oxygenate conversion using crystalline (metallo) silicates and germinates SUZ-2
08/16/1991CA2036330A1 .alpha.-hydroxylated acids; process for preparing the same and their use
08/14/1991EP0441685A1 Catalytic system and its use in the oxydehydrogenation of saturated carboxylic acids
08/14/1991EP0441447A1 Carbonylation catalyst process
08/14/1991EP0441446A1 Carbonylation catalyst system
08/14/1991EP0441347A1 Method of producing naphthalene dicarboxylic acid
08/14/1991EP0441312A1 Process for producing methacrylic acid
08/14/1991EP0441260A1 Catalytic carbonylation process
08/14/1991EP0441183A1 Process for preparing anhydrous tin(IV)-carboxylates
08/14/1991EP0440930A2 Process for the debromination of 2-substituted-5-bromo-6-methoxynaphthalenes
08/14/1991EP0440913A2 Process for preparing tertiary carboxylic acids
08/14/1991DE4103251A1 4-Hydroxyphenyl-acetonitrile prodn. - by gas-phase reaction of 4-methoxy-phenyl-acetonitrile with water, on zeolite or structurally related aluminium-contg. phosphate catalyst
08/14/1991DE4002988A1 Basic calcium aluminium hydroxide di:carboxylate(s) - useful as heat stabilisers for halogen-contg. thermoplastics, esp. PVC
08/14/1991CA2035789A1 Cosmetic composition
08/13/1991US5039710 Viricides, antitumor agents
08/13/1991CA2009927A1 Separation of hydroxy paraffinic dicarboxylic acids from olefinic dicarboxylic acids
08/13/1991CA1287642C Process for preparing cyclohexanonecarboxylic acid compounds
08/10/1991CA2035426A1 Catalytic carbonylation process
08/08/1991WO1991011428A1 Olefinically unsaturated adducts of ethylene on polyunsaturated fatty acids or fatty acid esters, process for producing them and their use
08/08/1991WO1991011427A1 Olefinically unsaturated adducts of propylene on polyunsaturated fatty acids or fatty acid esters, process for producing them and their use
08/08/1991WO1991011426A1 Saturated branched fatty acids with 20 to 28 carbon atoms or esters thereof with c1-c36 alkanols, process for producing them and their use
08/08/1991WO1991011425A1 Saturated, branched fatty acids with 21 to 28 carbon atoms or esters of the same with c1-c36 alkanols, process for producing them and their use
08/08/1991WO1991011423A1 Process for reacting a low molecular weight hydroxy compound with a carboxylic acid halide
08/08/1991WO1991011419A1 Hypochlorous acid as a reagent for the oxidation of organic compounds in two phase systems
08/08/1991WO1991011411A1 Alkylation of aromatics
08/08/1991DE4003043A1 Verfahren zur herstellung von 2-hydroxy-naphthalin-6-carbonsaeure A process for preparing 2-hydroxynaphthalene-6-carbonsaeure
08/07/1991EP0440593A2 Oxidation of tertiary-alkyl substituted aromatics and catalysts therefor
08/07/1991EP0439616A1 Method of producing 3,4,3',4'-substituted biphenyl compounds
08/07/1991EP0439578A1 Process for the production of trimellitic anhydride with improved color.
08/06/1991US5037512 Removing by-products of catalytic oxidation of toluene; chlorination of benzyl-benzoate to produce benzonitrile-free benzoyl chloride
08/06/1991CA2034971A1 Carbonylation catalyst system
08/06/1991CA1287360C Process for the preparation of 4'-hydroxybiphenyl-4- carboxylic acid
08/03/1991WO1991011422A1 Process and device for producing 2-hydroxy-naphthalene-6-carboxylic acid
08/03/1991CA2075197A1 Process for the preparation of 2-hydroxy-naphthalene-6-carboxylic acid
08/02/1991WO1991011421A1 Basic calcium aluminium hydroxide dicarboxylates, process for producing them and their use
08/02/1991CA2074821A1 Basic calcium aluminum hydroxide dicarboxylates, a process for their production and their use
08/01/1991DE4101737A1 Prepn. of olefinic cpds. by reacting carbonyl cpds. and di:azo-alkane - in presence of tert. phosphane and organo-rhenium oxide catalyst
07/1991
07/31/1991EP0439013A1 Enhanced gas-liquid reactions
07/31/1991EP0439007A2 Process for producing 2,6-naphthalene dicarboxylic acid
07/31/1991EP0438948A1 Process for preparing glyoxylic acid by catalytic oxidation of glyoxal in an aqueous medium in the presence of catalytic quantities of platinum
07/31/1991EP0438715A2 1,1-Bicyclo-substituted fluorinated cyclopentanes and method for their production
07/31/1991EP0438686A2 Triazolylmethyl-cyclopropyl derivatives
07/31/1991CN1053424A Preparation of metallic passivating agent of cracking catalyst and passivating agent products
07/31/1991CN1013370B Process for preparing 2,4,5-trihalogeno-and 2,3,4,5-tertrahalogeno-benzene derviatives
07/30/1991US5036156 Process for the preparation of α-bromo-phenylacetic acids
07/25/1991WO1991010638A1 Manganese compound catalyzed oligomerization reactions and products thereof
07/25/1991WO1991010637A1 A process for preparing oxalic acid
07/25/1991WO1991010634A1 Nitrogen-containing aromatic heterocyclic ligand-metal complexes and their use for the activation of hydrogen peroxide and dioxygen in the reaction of organic compounds
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