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Class 562/531 - Of aldehyde


Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the acid is produced by oxidizing an aldehyde.
No. of patents: 115
Last issue date: 02/01/2011


1      
NumberTitleIssue Date
7880033Process for producing 3,3,3-trifluoropropionic acid
A benzyl vinyl ether represented by the following formula is hydrolyzed in the presence of a catalyst selected among Arrhenius acids and Lewis acids to obtain 3,3,3-trifluoropropionaldehyde. Subsequently, the 3,3,3-trifluor...
02/01/2011
7799945Catalytic process for preparing aliphatic straight-chain and β-alkyl-branched carboxylic acids
A catalytic process for preparing aliphatic straight-chain and β-alkyl-branched carboxylic acids of 5 to 13 carbon atoms by catalytic oxidation of the corresponding aldehydes by means of oxygen or oxygen-containing gas mixtures in the liquid phase in the presence o...
09/21/2010
7649111Catalyst for the oxidation of a mixed aldehyde feedstock to methacrylic acid and methods for making and using same
A heteropolyacid catalyst for oxidation of isobutyraldehyde, methacrolein or mixtures or combinations thereof to methacrylic acid is disclosed where the heteropolyacid catalyst includes at least molybdenum (Mo), phosphorus (P), vanadium (V), and a first component in...
01/19/2010
7247755Process for producing α,α-bis(hydroxymethyl)alkanal
The present invention provides a process for producing an α,α-bis(hydroxymethyl)alkanal represented by Formula (II): (wherein R represents an alkyl group, a cycloalkyl group, or an aryl group) which comprises r...
07/24/2007
7193110Method for producing carboxylic acid
An aldehyde-containing oily solution and an aqueous hydrogen peroxide solution are reacted in the presence of a catalyst comprising a polymer compound having a sulfonic acid group in a side chain thereof in a heterogeneous solution system. According to such a reacti...
03/20/2007
7176335Method for producing methacrolein from isobutane
A process prepares methacrolein from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and using the isobutenic product gas mixture to charge an oxidation zone in which the isobutene is oxidized to methacrolein in the gas phas...
02/13/2007
7147947Selective carbon monoxide oxidation catalyst, method of making the same and systems using the same
A CO-selective catalyst comprises a catalytic material, wherein the catalytic material is selected from the group consisting of Pt, Pd, Rh, Ir, Os, Ru, Ta, Zr, Y, Ce, Ni, Cu, and oxides, alloys, compounds, and combinations comprising at least one of the foregoing; a...
12/12/2006
7138544Process for preparing aliphatic straight-chain and beta-alkyl-branched carboxylic acids
The present invention relates to a process for preparing aliphatic straight-chain and β-alkyl-branched carboxylic acids by catalytic oxidation of aldehydes by means of oxygen or oxygen-containing gas mixtures. Alkali metal carboxylates or alkaline earth metal carbo...
11/21/2006
7048793Beneficiated water reducing compositions
Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate super...
05/23/2006
7038079Method for production of acrylic acid
A method is disclosed which produces acrylic acid in a high yield as maintaining the conditions for purifying acrylic acid in constant ranges and preventing the acrylic acid from polymerization. By using a reactor which has first reaction zone and second reaction zo...
05/02/2006
7038080Heterogeneously catalyzed gas-phase partial oxidation of acrolein to acrylic acid
A process for the heterogeneously catalyzed gas-phase partial oxidation of acrolein to acrylic acid over a multimetal oxide material having a specific structure, which contains the elements Mo and V, at least one of the elements Te and Sb and at least one of the ele...
05/02/2006
7022844Amide-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
6982347Heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid
In a process for partially oxidizing acrolein to acrylic acid in the gas phase under heterogeneous catalysis, the starting reaction gas mixture is oxidized at an acrolein loading of ≦145 and ≧70 l (STP) of acrolein/l of fixed catalyst bed·h over a fixed catalys...
01/03/2006
6969774Method for producing methacrylic acid
In a method for synthesizing methacrylic acid by using a fixed bed tube type reactor provided with a catalyst bed into which a solid oxidation catalyst is filled and with a heat medium bath and by flowing a raw material gas containing methacrolein and oxygen through...
11/29/2005
6939991Preparation 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
6930201Process for producing methacrylic acid
In a method of producing methacrylic acid by passing a material gas containing methacrolein, oxygen and water vapor through a reactor packed with a catalyst containing as the main component a compound oxide containing molybdenum and phosphorus, a concentration of me...
08/16/2005
6916369Beneficiated water reducing compositions
Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate super...
07/12/2005
6888026Method for producing (meth)acrylic acid
An object of this invention is to provide a method for producing acrylic acid that enables to suppress adverse influence of byproducts during distillation and to accomplish long-term continuous operation of the acrylic acid production apparatus. This invention is di...
05/03/2005
6864391Method for producing propylene hydroformylation products and acrylic acid and/or acrolein
A process for preparing hydroformylation products of propylene and for preparing acrylic acid and/or acrolein comprises a) feeding a propylene-containing feed in which from 2 to 40% by weight of propane is present and also carbon monoxide and hydrogen into a reactio...
03/08/2005
6800783Method for the synthesis of aliphatic carboxylic acids from aldehydes
The invention relates to a method for the synthesis of aliphatic carboxylic acids by the catalytic oxidation of aldehydes with oxygen, or oxygen-containing gas mixtures. Metals of groups 5 11 of the periodic table of elements, or the compounds thereof are used as ca...
10/05/2004
6794539Method for producing multiple-phase multi-metal oxide materials
In a process for preparing a multiplephase multimetal oxide composition comprising Mo, V, Cu and, if desired, further elements, at least one phase is preformed separately and dispersed in a plastically deformable precursor composition of a further phase. The mixture...
09/21/2004
6787671Catalytic osmium-assisted oxidative cleavage of olefins
An osmium-assisted process for the oxidative cleavage of oxidizable organic compounds such as unsaturated organic compounds, including alkenes and olefins into aldehydes, carboxylic acids, esters, or ketones. The process uses a metal catalyst comprising osmium and a...
09/07/2004
6774262Method of novel noncatalytic organic synthesis
The invention provides a method of increasing the reaction rate of an organic synthesis reaction by utilizing supply of OH− from water in the absence of catalyst without adding a basic catalyst in supercritical water or subcritical water of at least 350...
08/10/2004
6680395Method for the synthesis of straight-chain aliphatic carboxylic acids from aldehydes
The invention relates to a non-catalysed method for the synthesis of straight-chain aliphatic carboxylic acids by oxidation of straight-chain aldehydes with oxygen-containing gas mixtures. The invention is characterised in that during the novel process of...
01/20/2004
6664416Process for producing (meth)acrylic acid
The present invention produces (meth)acrylic acid in a high yield in a process for producing (meth)acrylic acid by subjecting at least one member selected from the group consisting of (meth)acrolein, propane, and isobutane to catalytic gas phase oxidation...
12/16/2003
6593494Process for preparing carboxylic acids by oxidation of aldehydes
Process for the oxidation of aldehydes to the corresponding acids in which an aldehyde as substrate is oxidized to the corresponding acid in the presence of an equimolar amount, or a molar excess, of periodate, catalytic amounts of dichromate or CrO3...
07/15/2003
6555716Process for the hydroformylation of olefins
Aldehydes are prepared in a hydroformylation apparatus by the multiphase hydroformylation reaction of one or more olefins with hydrogen and carbon monoxide, where the continuous phase contains a solvent mixture and the hydroformylation catalyst is present...
04/29/2003
6545177Complex oxide catalyst and process for preparation of acrylic acid
A catalyst which is a complex oxide catalyst represented by the following general formula (1): Moa Vb Wc Cud Ae Bf Cg Dh Ei Ox (1) (in which Mo is mo...
04/08/2003
6525217Method for the catalytic gas-phase oxidation of propene to acrylic acid
A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-contain...
02/25/2003
6498270Process for preparing a catalyst for use in production of methacrylic acid and process of preparing methacrylic acid
The present invention provides a process for preparing a catalyst and the same for use in production of methacrylic acid, which is characterized by molding a raw material including a powder containing phosphorus and molybdenum at the specific pressure. Th...
12/24/2002
6429332Catalyst for production of acrylic acid and method for production of acrylic acid by the use of the catalyst
A catalyst for the production of acrylic acid by the vapor-phase catalytic oxidation of acrolein or acrolein-containing gas and a method for the production of acrylic acid by the use of this catalyst are provided. The catalyst of this invention comprises ...
08/06/2002
6414183Method for handling waste oil
The present invention provides a method for stabilizing waste oil which is taken of each chemical apparatus of the manufacturing line of (meth)acryl acid and/or ester thereof, and treating the waste oil such as draining it out of the production apparatus,...
07/02/2002
6403829Method for the catalytic gas phase oxidation of acrolein into acrylic acid
In a process for the catalytic gas-phase oxidation of acrolein to acrylic acid, the reaction gas starting mixture is passed, with an acrolein loading of ࣙ150 l (s.t.p.)/l.h, over a fixed-bed catalyst which is housed in two spatially successive reaction ...
06/11/2002
6372939Production of 6-aminocaproic acid
A process for making 6-aminocaproic acid by hydroformylating 3-pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), oxidizing the FVN mixture to produce 3-, 4-, and 5-cyanovaleric acid; hydrogenating the resulting product to produce ...
04/16/2002
6362367Preparation of organic acids
This invention relates to a process for producing one or more organic acids in high purity which process comprises (i) oxidizing in a liquid oxidation reactor one or more organic liquids with essentially pure oxygen or oxygen-enriched air containing at le...
03/26/2002
6340778Process for catalytic aldol condensations by means of a multiphase reaction
The invention relates to a process for the catalytic aldol condensation of aldehydes by means of a multiphase reaction in a tube reactor, wherein the catalyst is present in the continuous phase and at least one aldehyde is present in a dispersed phase and...
01/22/2002
6262318Method of producing polyols from arabinoxylan-containing material
The invention relates to a method of producing xylitol and erythritol from arabinoxylan-containing material. According to the invention, the arabinoxylan-containing material is hydrolyzed and xylose and arabinose are separated from the obtained hydrolysat...
07/17/2001
6084125Process for producing aliphatic acids using a reactor system having a shell and a tube reactor configuration to force circulation of reaction liquid
A shell and tube heat exchanger reactor with forced circulation is used to improve heat and mass transfer for exothermic liquid--liquid, gas-liquid and gas-liquid-solid reactions. Enhanced productivity and selectivity are obtained....
07/04/2000
6084124Method to prepare ଱-ଲ unsaturated carboxylic acids from epoxides using a cobalt and tin catalyst system
The present invention is a method to produce an unsaturated carboxylic acid which includes the steps of: providing an epoxy compound; contacting the epoxy compound with carbon monoxide in the presence of a catalytically effective amount of a catalyst syst...
07/04/2000
6072082Process for producing 2,2'-Bis(hydroxymethyl) alkanoic acid
A process for producing 2,2'-bis(hydroxymethyl)alkanoic acid of the present invention, comprises: a 2,2'-bis(hydroxymethyl)alkanal production step (A1) of reacting aliphatic aldehyde having two hydrogen atoms bonded to ଱-carbon atom thereof, with fo...
06/06/2000
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