Class 562/525 - Of oxy 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 an oxy
No. of patents: 19
Last issue date: 03/29/2011

Number	Title	Issue Date
7915446	Catalyst and process for the production of acetic acid A catalyst and process for the production of acetic acid by the carbonylation of methanol and/or a reactive derivative thereof. The catalyst system comprises an iridium carbonylation catalyst, methyl iodide co-catalyst, optionally at least one of ruthenium, osmium, ...	03/29/2011
6265605	Method of preparing amino carboxylic acids Novel compounds, N,N'-bis(phosphonomethyl)-N,N'-bis(hydroxycarbonylmethyl)urea and N,N,N',N'-tetrakis(hydroxycarbonylmethyl)urea, suitable for use in preparing N-acyl aminocarboxylic acids that can be readily converted to N-(phosphonomethyl)glycine a...	07/24/2001
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
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
5798387	Amino acid derivatives A novel amino acid derivative represented by the general formula (I) shown below or a salt thereof have now been provided by chemical synthesis, and it has been found that these new compounds stimulate proliferation and physiological activities of the T c...	08/25/1998
5731467	Process for the manufacture of xylaric acid and uses thereof Process for the manufacture of xylaric acid, characterized in that it consists of the oxidative degradation of 5-ketogluconic acid in alkaline medium using oxygen or a gas containing it. The xylaric acid obtained is of use as a calcium-chelating agent or as a ...	03/24/1998
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
5157152	Process for the oxidation of a tetrahydrophthalic acid A process for oxidation of a tetrahydro compound of the formula ##STR1## wherein R and R' independently are H, alkyl, aryl or halo, to a glycol of the formula ##STR2## comprises treating the tetrahydro compound with hydrogen peroxide at an ...	10/20/1992
5091568	Oxygen-ruthenium oxide oxidation of 2-hydroxy-3,3-dimethyl-butanoic acid In the oxidation of 2-hydroxy-3,3-dimethyl-butanoic acid in solution in the presence of a ruthenium oxide catalyst to produce 2-oxo-3,3-dimethyl-butanoic acid, the improvement wherein oxidation is effected with oxygen....	02/25/1992
5047582	Process for the oxidation of a tetrahydrophthalic acid A process for oxidation of a tetrahydro compound of the formula ##STR1## wherein R and R' independently are H, alkyl, aryl or halo, to a glycol of the formula ##STR2## comprises treating the tetrahydro compound with hydrogen peroxide at an ...	09/10/1991
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
4701550	Process for preparing alkyl esters of methyltartronic acid There is described a process for preparing alkyl esters of methyltartronic acid by hydroxylation of methacrylic acid to alpha-methylglyceric acid with H2 O2, in an aqueous medium, in the presence of H2 WO4 and o...	10/20/1987
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
4620034	Process for the preparation of 2-keto-aldonic acids Preparation of 2-keto-aldonic acids, e.g., 2-keto-gluconic acid, by oxidizing an aldose, e.g. glucose, or aldonic acid in aqueous solution with molecular oxygen. Use is made of a platinum catalyst together with a catalytic amount of lead and/or bismuth an...	10/28/1986
4614822	Catalytic oxidation of 3,3-dimethyl-2-hydroxybutyric acid to 2-oxo acid and preparation of 4-amino-6-tert.-butyl-3-thio-1,2,4-triazine-5(4-H)-one Sodium 3,3-dimethyl-2-hydroxybutyrate and ruthenium dioxide hydrate are added to water, the pH rendered alkaline, and sodium hypochlorite is slowly added to produce sodium 3,3-dimethyl-2-oxobutyrate in high yield and purity. The solid catalyst is filtered...	09/30/1986
4233460	Alkoxyalkanoic acid preparation An extremely mild, oxidative process for converting alkoxyalkanols to the corresponding acids is disclosed which comprises reacting the alcohol with an alkali metal hydroxide and tert-butyl hydroperoxide in the presence of a catalytic amount of palladium....	11/11/1980
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
4142057	Process for preparing diglycolic acids 1,4-Dioxan-2-ones are prepared by contacting carbon monoxide with formaldehyde, a 1,2-glycol, and a catalytic amount of hydrogen fluoride. The products of this reaction are readily converted into diglycolic acids by heating with aqueous caustic in the pre...	02/27/1979

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Class 562/525 - Of oxy acid or ester