Class 562/524 - Of carboxylic acid or ester

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the acid is produced by oxidizing a carboxylic
No. of patents: 39
Last issue date: 10/21/2008

Number	Title	Issue Date
7439388	Process for converting primary amidoalcohols to amidocarboxylic acids in high yield using water as solvent The invention relates to an improved process for oxidizing a primary amidoalcohol to the corresponding amidocarboxylic acid in high yield. ...	10/21/2008
7253309	Method for production of methacrylic acid This invention is related to a shell-and-tube type reactor provided with reaction tubes packed with a catalyst and adapted to circulate a heat medium to the fluid outside the tubes and is characterized by a method introducing a gas into the catalyst beds so as to re...	08/07/2007
7169950	Method for producing monocarbonyl compounds or biscarbonyl compounds or hydroxyl compounds The invention relates to a method for producing monocarbonyl compounds or biscarbonyl compounds or hydroxyl compounds by ozonizing, unsaturated organic carbon compounds that, per molecule, have one or more olefinic or aromatic double bonds, which can be cleaved by o...	01/30/2007
7084300	Work-up of residues in the preparation of carboxylic acids Degradation acids obtained in the synthesis of carboxylic acids, in particular dicarboxylic acids, having from 8 to 16 carbon atoms may be isolated by separating the degradation acids in the form of a solid from the crude reaction mixture, then washing the degradati...	08/01/2006
7022844	Amide-based compounds, production, recovery, purification and uses thereof Methods are disclosed of producing and purifying at least one amide. In accordance with one of the methods disclosed herein, the at least one amide is produced by providing an organic liquid comprising at least one oxime, providing at least one catalyst, adding the ...	04/04/2006
6939991	Preparation of acrylic acid In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separati...	09/06/2005
6825379	Method for recovering and producing C4-C6 dicarboxylate from alkaline waste solution generated in caprolactam preparation process The present invention relates to a method for recovering and producing C4-C6 dicarboxylates from an alkaline waste solution generated in a caprolactam preparation process, in which the alkaline waste solution is treated with sulfuric acid to se...	11/30/2004
6610884	Polycarboxylic acids, preparation thereof and use thereof for treating cellulosic fibres or textile or paper materials produced therefrom A process is provided for preparing specific polycarboxylic acids by oxidative cleavage of double-bond compounds with hydrogen peroxide or hydrogen peroxide donors. The polycarboxylic acids thus obtained are notable for excellent acid stability, and conse...	08/26/2003
6515172	Process for the preparation of perfluorocarboxylic acids Process for the preparation of perfluorocarboxylic acids of the formula RF --COOH, salts thereof and esters thereof from perfluoroalkyl iodides of the formula RF '--I, in which RF and RF ' are cyclic, branched o...	02/04/2003
6111136	Method for preparation of perfluoroalcanecarboxylic and perfluoroalkanesulfonic acids The invention consists of a new method for preparing perfluoroalcanecarboxylic and perfluoroalcanesulfonic acids in which ozone is made to react, in a protic environment, upon a perfluoroalkyl chain comprising at least one oxydizable chemical group....	08/29/2000
6015924	Process for the preparation of diacids from the washing waters of cyclohexane oxidation products The present invention relates to a process for the preparation of diacids or mixtures of diacids from aqueous solutions derived from the washing of cyclohexane oxidation products. More specifically, the present invention provides a process for the prepara...	01/18/2000
5898084	Preparation of N-acylaminocarboxylic acids and N-acylaminosulfonic acids and alkali metal salts thereof The process for preparing an N-acylaminocarboxylic or N-acylaminosulfonic acid or an alkali metal salt thereof from an alkali metal aminocarboxylate or aminosulfonate and a carboxylic glyceride comprises (a) preparing a suspension of the solid anhydrous alkali...	04/27/1999
5883269	Method for controlling the reactivity of an ozonization reaction product A method for controlling the reactivity of an ozonized reaction mixture formed by ozonizing an unsaturated compound, wherein the reactivity of the ozonized reaction mixture is controlled by introducing a reactivity controlling amount of a saturated fatty ...	03/16/1999
5808143	Catalyst based on oxides of Fe, Co, Bi and Mo Catalysts of the formula I Aa Bb Ox !p Cc Dd Fee Cof Ei Fj Oy !q I, where A is bismuth, telluri...	09/15/1998
5693747	Perfluoroalkyl sulfide sulfone polysulfone and polysulfide diols Bisperfluoroalkyl-substituted diols containing sulfide, sulfone or polysulfide linkages and a method for making them are described. These diols can react with isocyanates to form urethanes; diisocyanates to form polyurethanes; chloroformates to form carbo...	12/02/1997
5420316	Process for making carboxylic acids A carboxylic acid is made by contacting an organic compound having at least one olefinic bond with ozone to form a mixture of ozonization products; contacting the mixture of ozonization products with oxygen to form a mixture of oxidation products; contact...	05/30/1995
5380928	Two step oxidation process for the production of carboxylic acids such as azelaic acid from unsaturated substrates The invention relates to a method for the high yield production of dicarboxylic acids such as azelaic acid by the controlled two step oxidation of an unsaturated hydrocarbon substrate. The method consists of two steps and involves the derivatization of th...	01/10/1995
5336793	Preparing carboxylic acids or esters by oxidative cleavage of unsaturated fatty acids or esters A method of preparing carboxylic acids or esters thereof by the oxidative cleavage of unsaturated fatty acids or esters thereof is carried out in a two-phase aqueous-organic system in which the organic phase contains the unsaturated fatty acid and/or the ...	08/09/1994
5321155	Process for the production of cyclohexyladipates and adipic acid Cyclohexyladipates are produced by reacting a mixture containing a major amount of benzene and minor amounts of cyclohexene, adipic acid and an acid catalyst....	06/14/1994
5278327	Fatty oil ex helianthus annuus for the production of diperazelaic acid The use of a fatty oil ex Helianthus annuus containing 78 to 92% by weight oleic acid and 2 to 10% by weight linoleic acid for the production of diperazelaic acid, with elimination of enrichment steps with respect to the oleic acid content, by fat splitti...	01/11/1994
5223642	Process for the preparation of ether carboxylic acids from carbohydrates and derivatives thereof and their use A process for the preparation of ether carboxylic acids by ethoxylation of carbohydrates followed by catalytic oxidation and the use of the products in detergents or cleaning agents....	06/29/1993
5103047	Process for preparation of 4- and 5-ketocarboxylic acids This invention is a novel synthesis of 4-and 5-ketocarboxylic acids which includes the reaction of the appropriate delta- or gamma-lactone with a chromosulfuric acid solution and separating the 4- or 5-ketocarboxylic acid product from the reduced solution...	04/07/1992
4952721	Process for oxidizing esters of methyl-substituted phenol compounds to aromatic carboxylic acids A process is disclosed for the oxidation of esters of para- and meta-methyl-substituted phenols to the corresponding aromatic carboxylic acid in the presence of a promoter comprising an anhydride of a lower aliphatic carboxylic acid and a heavy metal cata...	08/28/1990
4833272	Process for preparing polycarboxylic acid Disclosed is a process for preparing a polycarboxylic acid, the process comprising subjecting a Diels-Alder reaction product of maleic anhydride and a diene and/or the corresponding acid to oxidative cleavage using hydrogen peroxide in the presence of at ...	05/23/1989
4791228	Process for preparing ଱,ω-dicarboxylic acids A process for preparing ଱,ω-dicarboxylic acids of the formula OC--(CH2)n --COOH in which n=6 to 10 is disclosed. The process consists of the catalytic oxidation of a compound of formula X--(CH2)n --CHO wh...	12/13/1988
4739114	Process for the preparation of 3-alkyl-substituted glutaric acids and 2-alkyl-substituted succinic acids This invention relates to a novel method of preparing 3-alkyl-substituted glutaric acids and 2-alkyl-substituted succinic acids from 5-alkyl-substituted-1,3-cyclohexane-diones or 3-alkyl-substituted-5-ketohexanoic acids via transition-metal catalyzed ...	04/19/1988
4663479	Preparation of aliphatic carboxylic acids and aldehydes by upgrading alpha-hydroxycarboxylic acids A process for converting ଱-hydroxycarboxylic acids to hydroxy free aliphatic carboxylic acids and aldehydes in the presence of a catalyst of the formula: wherein M is at least one of an element selected from Group IB, VIB, IVA; and M' is at least one of ...	05/05/1987
4606863	Process for preparing carboxylic acid This invention provides a process for preparing carboxylic acid, the process comprising subjecting an oxidation product produced by reacting a peroxide with (a) unsaturated aliphatic monocarboxylic acid having at least one unsaturated bond in the carbon c...	08/19/1986
4511734	Process for the production of 3,3-dimethylglutaric Process for the production of 3,3-dimethylglutaric acid from isophorone. In a first step the isophorone is converted with ozone into an ozone-addition product. The ozone-addition product is converted by hydrolysis into 3,3-dimethyl-5-oxohexanoic acid. The...	04/16/1985
4503206	଱,ω-Perfluorodicarboxylic acids Tetrafluoroethylene is reacted in an aqueous environment with hydroxyl radicals, generating a mixture of water soluble and water insoluble ଱,ω-perfluorodicarboxylic acids....	03/05/1985
4420634	Process for the oxidation of unsaturated aliphatic hydrocarbons The invention relates to a process for the oxidation of unsaturated hydrocarbons, particularly butenes and isobutylene, for the production of acetic acid, propionic acid and acetone. Specifically the invention comprises the highly selective oxidation of a...	12/13/1983
4331608	Liquid phase catalytic co-oxidation process Unsaturated compounds having at least 4 carbon atoms, including unsaturated alicyclic compounds having at least 4 carbon atoms, unsaturated aliphatic compounds having at least one carbon-carbon unsaturated bond and having at least 4 carbon atoms and unsat...	05/25/1982
4227021	Production of adipic acid from acidic wash waters An improved process for producing adipic acid from the acidic wash waters which arise in the process for oxidizing cyclohexane with air, by treatment with nitric acid at from 10° to 50° C., with removal of the heat of reaction by external cooling, where...	10/07/1980
4144398	Process for the preparation of acrolein and acrylic acid Process for the preparation of acrolein, acrylic acid and mixtures thereof or methacrolein, methacrylic acid and mixtures thereof by the vapor phase reaction of allyl acetate or methallyl acetate and oxygen in the presence of a heterogeneous catalyst comp...	03/13/1979
4098817	Oxidation of cycloaliphatic compounds Cyclic compounds, particularly cycloalkanes and cycloalkenes can be oxidized using known metal oxidation catalysts in an organic ester solvent with considerable advantage over prior art solvents. For example cyclohexane was oxidized with a combination cob...	07/04/1978
4082788	Esterification and extraction process Organic acids contained in aqueous solution are separated and/or recovered by a process comprising adding an alcohol to the aqueous solution to esterify the acids present, while preferably simultaneously contacting the alcoholic mixture with a water-immis...	04/04/1978
4058555	Process for the purification of mixed acids Complex mixtures of polycarboxylic organic acids and their precursors, such as the by-products from the air oxidation of cyclohexane and its derivatives, are treated with nitric acid under hydrolytic conditions, esterified with an alcohol, extracted with ...	11/15/1977
4022823	Citric acid and citramalic acid preparation A process for the preparation of citric acid which comprises contacting an unsaturated compound selected from 3-methylene-1,5-pentanediol and its esters with a nitric acid solution in an amount of 2 to 50 mols of nitric acid feed per mol of unsaturated co...	05/10/1977
3931259	Process for the preparation of carboxylic acids The present invention provides a process for the preparation of carboxylic acids, which comprises reacting relatively long-chain vicinal diols and/or their complete or part esters with lower carboxylic acids with nitric acid having a concentration of at l...	01/06/1976

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Class 562/524 - Of carboxylic acid or ester