Class 562/410 - Nitrogen containing oxidant

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the oxidizing agent utilized contains
No. of patents: 36
Last issue date: 05/13/2008

Number	Title	Issue Date
7371893	Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a b...	05/13/2008
7326808	Polycarboxylic acid production system employing cooled mother liquor from oxidative digestion as feed to impurity purge system Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. A solvent purification system is employed to remove of at least one aromatic impurity present in a solvent purification feed. At least about 20 weight percent of the ...	02/05/2008
7094925	Oxidation of alkyl-aromatic compounds A process for the oxidation of an alkyl-aromatic compound, wherein the aromatic compound is admixed with an oxidising agent or sulfur compound in the presence of an ionic liquid is described. In this process, air, dioxygen, peroxide, superoxide, any other form of ac...	08/22/2006
7094923	Method for producing substituted nitro benzoic acids by oxidation of corresponding nitro toluenes, nitro benzyl alcohols, esters and/or ethers The present invention relates to the preparation of nitrobenzoic acids by oxidizing particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers in the presence of nitric acid at elevated temperature and elevated pressure. It has been found that the particul...	08/22/2006
6933406	Method for producing 2-halo-6-nitrobenzoic acids The present invention relates to a process for the preparation of 2-halo-6-nitrobenzoic acids by oxidation of 2-halo-6-nitro-benzyl alcohols, esters, ethers, or mixtures thereof with nitric acid and to the use of this process as a step in the preparation of 2-halo-6...	08/23/2005
6921822	Process for stereoselectively reducing 4-aryl-4-oxobutanoic acid derivatives The present invention relates to a process for preparing stereoisomerically enriched 4-aryl-4-hydroxybutanoic acid derivatives by reducing 4-aryl-4-ketobutanoic acid derivatives in the presence of ruthenium-containing catalysts. ...	07/26/2005
6900349	Method for producing substituted nitro benzoic acids by oxidation of corresponding nitro toluenes, nitrol benzyl alcohols, esters and/or ethers The present invention relates to the preparation of nitrobenzoic acids by oxidizing particular nitrotoluenes, nitrobenzyl alcohols, esters and/or ethers in the presence of nitric acid at elevated temperature and elevated pressure. It has been found that the particul...	05/31/2005
6440327	Polymers and use thereof as scale inhibitors Compositions and methods for inhibiting scale are provided. Pursuant to the present invention, a composition for inhibiting scale is provided that includes a carbohydrate polymer having both nitrogen-containing groups and carboxyl groups. The nitrogen-con...	08/27/2002
6114574	Preparation of aromatic acids A process for converting alkyl-substituted aromatic hydrocarbons, such as p-xylene or 2,6-dimethyl naphthalene to their corresponding dicarboxylic acids is disclosed, said process comprising contacting the alkyl-substituted aromatic hydrocarbon with a gas...	09/05/2000
6020522	Process for producing aromatic hydroxycarboxylic acid derivatives A methyl group-containing aromatic compound having a phenolic hydroxyl group protected by a protecting group, is oxidized with oxygen to provide an aromatic hydroxycarboxylic acid derivative. The protecting group includes, for example, an acyl group....	02/01/2000
5980801	Methods of preparing an intermediate oxidation product from a hydrocarbon by utilizing an activated initiator Methods for oxidizing a hydrocarbon to an intermediate oxidation product by utilizing an activated initiator. The initiator is activated by partially oxidizing a first mixture of the initiator and a hydrocarbon, which mixture contains a rather large amoun...	11/09/1999
5939581	Processes for preparing hydrocinnamic acid Processes for preparing aromatic carboxylic acids. Cinnamaldehyde is hydrogenated to produce a mixture of hydrogenation products, namely, hydrocinnamaldehyde and hydrocinnamic alcohol. The mixture is then oxidized using a suitable oxidizing agent to subst...	08/17/1999
5824819	Methods of preparing an intermediate oxidation product from a hydrocarbon by utilizing an activated initiator Methods for oxidizing a hydrocarbon to an intermediate oxidation product by utilizing an activated initiator. The initiator is activated by partially oxidizing a first mixture of the initiator and a hydrocarbon, which mixture contains a rather large amoun...	10/20/1998
5633399	Process for the preparation of fluorinated benzoic acids A process for the preparation of 2-chloro-4,5-difluorobenzoic acid and 2,4,5-trifluorobenzoic acid as well as synthetic intermediates useful in and prepared according thereto, comprising reacting a nitrobenzene having the formula ##STR1## wherei...	05/27/1997
5424481	Preparation of methylsulfonylbenzoic acids A process for preparing methylsulfonylbenzoic acids comprises oxidizing the corresponding methylsulfonyltoluenes with nitric acid and air in sulfuric acid in the presence of vanadium or cobalt compounds....	06/13/1995
5387699	Process for preparing pyromellitic dianhydride The invention relates to a process for preparing pyromellitic dianhydride (PMDA) by heterogeneously catalyzed oxidation in the gas phase by means of a gas containing molecular oxygen. The process involves oxidizing benzaldehydes which are 2,4,5-trialkylat...	02/07/1995
5245058	Preparation of 1-nitroanthraquinone-2-carboxylic acids 1-Nitroanthraquinone-2-carboxylic acids of the general formula I ##STR1## where X is hydrogen, chlorine or bromine, are prepared by oxidizing a 1-nitro-2-methylanthraquinone of the general formula II ##STR2## with nitric acid in an organic react...	09/14/1993
5198575	Preparation of nitrobenzoic and anthranilic acids Nitrobenzoic acids I ##STR1## (X1, X2 =fluorine, chlorine, bromine, hydrogen or nitro) are prepared by oxidizing the corresponding nitrotoluene II ##STR2## with nitric acid in the presence of sulfuric acid and vanadium(V) ...	03/30/1993
5036013	Aqueous-soluble polymeric coal substrate for depolymerization by a lignin peroxidase A method is provided for converting coal to low molecular weight organic compounds comprising combining an aqueous solution of an aqueous-soluble polymeric coal substrate with a lignin peroxidase, oxygen and hydrogen peroxide. The invention is exemplified...	07/30/1991
4912233	Para- or meta-terphenyltetracarboxylic acid, dianhydride thereof and process for preparing the same Disclosed are a para- or meta-terphenyl-3,4,3",4"-tetracarboxylic acid or a dianhydride and a process for preparing the same. The para- or meta-terphenyl-3,4,3",4"-tetracarboxylic acid or a dianhydride thereof according to the present invention is a novel...	03/27/1990
4454345	Process for preparing 2,5-dichloro-3-nitrobenzoic acid The invention relates to a process of preparing 2,5-dichloro-3-nitrobenzoic acid by reacting 1,4-dimethyl-2,5-dichloro-3-nitrobenzene with aqueous nitric acid....	06/12/1984
4384134	Process for preparing organic acids A process for preparing a coal derivative comprising a mixture of monocyclic, polycyclic, multifunctional carboxylic acids which comprises contacting an aqueous slurry containing coal with aqueous nitric acid and then drying the resulting product to remov...	05/17/1983
4382146	Organic acids and process for preparing same A mixture of polycyclic, aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in an azeotropic mixture of methyl ethyl ketone and ethanol but substantially insoluble in water, and a process for preparing the mixture of...	05/03/1983
4334084	Organic acids and process for preparing same A mixture of polycyclic, aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in a mixture of polar solvents but substantially insoluble in water and a process for preparing the mixture of polycyclic, aromatic polycarb...	06/08/1982
4328374	Process for the production of aromatic dialdehydes A process for the production of aromatic dialdehydes which comprises reacting xylene chloride selected from the group consisting of ଱,଱,଱'-trichloroxylene alone, or a mixture of ଱,଱,଱'-trichloroxylene and ଱,&...	05/04/1982
4235787	Benzophenone pentacarboxylic acids and their dianhydrides A novel isomeric mixture of benzophenone pentacarboxylic acids and their anhydrides....	11/25/1980
4235728	Drilling fluids containing novel compositions of matter A drilling fluid containing a new composition of matter resulting from the reaction of (1) substantially water-insoluble polycyclic, polycarboxylic acids obtained as a result of the oxidation of coal with (2) a base....	11/25/1980
4159307	Apparatus for producing aromatic dicarboxylic acids An apparatus for producing an aromatic dicarboxylic acid by oxidizing a benzene derivative with molecular oxygen in the liquid phase in a lower aliphatic carboxylic acid as a solvent in the presence of an oxidation catalyst, wherein a starting material li...	06/26/1979
4150040	Aromatic anhydrides A mixture of polycyclic aromatic polycarboxylic anhydrides carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water and a process for preparing the mixture....	04/17/1979
4147882	Organic acids and process for preparing same A mixture of polycyclic aromatic polycarboxylic acids that is substantially insoluble in acetone and substantially insoluble in water and a process for preparing the mixture....	04/03/1979
4065477	Process for preparing highly pure 1-nitroanthraquinone 1-Nitroanthraquinone is produced in highly pure form by a process comprising the steps of partially oxidizing 3-nitro-o-xylene (I) to 2-methyl-3-nitrobenzoic acid (II) converting II to 2-methyl-3-nitrobenzoyl halide (III), converting III to the novel inte...	12/27/1977
4052448	Organic acids and process for preparing same A mixture of polycyclic aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water and a process for preparing the mixture....	10/04/1977
4022838	Process for preparing diarylketones A process for converting a 1,1-diarylalkane, such as a 1,1-bis(alkylphenyl)alkane, to the corresponding diarylketone which involves oxidizing the 1,1-diarylalkane using critical amounts of 1,1-diarylalkane, nitric acid and water. In a preferred embodiment...	05/10/1977
4016206	PROCESS FOR PREPARING PYROMELLITIC ACID An improvement in the process wherein durene is subjected to liquid phase oxidation with aqueous nitric acid to obtain pyromellitic acid which involves subjecting durene to pretreatment with oxygen in the presence of a cobalt compound dissolved in a lower...	04/05/1977
3979448	Processes for the continuous production of aromatic carboxylic acids by oxidation with nitric acid of aromatic compounds containing oxidizable acyclic substituents Processes for the continuous production of aromatic carboxylic acids by reaction of nitric acid with an aromatic compound having an oxidizable alkyl or alkoxyalkyl substitutent which comprise mixing the aromatic compound in the form of small droplets with...	09/07/1976
3978117	Process for converting styrene bottoms to nitrobenzoic acids A process for converting styrene bottoms to nitrobenzoic acids, particularly para-nitrobenzoic acid, which involves nitrating styrene bottoms and then oxidizng the nitrated styrene bottoms....	08/31/1976

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Class 562/410 - Nitrogen containing oxidant