Class 562/544 - Olefin

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the acid is produced by oxidizing an olefin.
No. of patents: 69
Last issue date: 01/11/2011

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Number	Title	Issue Date
7868202	Process for producing (meth)acrolein or (meth)acrylic acid The object of the invention is to provide a method for producing (meth)acrolein or (meth)acrylic acid by gas phase catalytic oxidation reaction, which can perform smooth temperature control of the heat medium, can prevent hot spot effectively and can be handled easi...	01/11/2011
7361622	Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alk...	04/22/2008
7329628	Method for preparing catalysts for partial oxidation of propylene and iso-butylene The present invention relates to a process for preparing a catalyst for partial oxidation of propylene and iso-butylene, and more particularly to a process for preparing a catalyst for partial oxidation of propylene and iso-butylene that can stably prepare a catalys...	02/12/2008
7285514	Method for preparing catalyst for partial oxidation of acrolein The present invention relates to a method for preparing a catalyst for partial oxidation of acrolein, particularly to a method for preparing a catalyst for partial oxidation of acrolein that has a superior acrolein conversion rate, acrylic acid activity, selectivity...	10/23/2007
7262322	Oxidation process for the production of carboxylic acids and alkenes An oxidation process for the production of alkenes and carboxylic acids from a feed comprising alkene and/or alkane, carbon monoxide, a molecular oxygen containing gas and optionally water in the presence of an oxidation catalyst in which the level of carbon monoxid...	08/28/2007
7253311	Method for the production of acrylic acid by heterogeneously-catalysed gas-phase oxidation Acrylic acid is prepared from propene by means of gas-phase oxidation by a process in which a starting gas mixture which contains propene and steam and whose molar propene/steam ratio is ≧1 and whose propane content is ≦5% is passed at elevated temperatures thro...	08/07/2007
7211692	Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of propene to acrylic acid A process for the long-term operation of a two-stage heterogeneously catalyzed gas phase partial oxidation of propene to acrylic acid, in which the temperature of the fixed catalyst beds is increased over the time and the gas phase partial oxidation is interrupted f...	05/01/2007
7208636	Preparation of acrolein by heterogeneously catalyzed partial gas phase oxidation of propene Acrolein is prepared by a process of heterogeneous catalyzed partial gas phase oxidation, by passing a starting reaction gas mixture which comprises propene, molecular oxygen and at least one inert gas, in which the molecular oxygen to propene (O2:C3...	04/24/2007
7169776	Method of preparing alkylated salicylamides via a dicarboxylate intermediate The present invention relates to a method of preparing an alkylated salicylamide from a protected and activated salicylamide via a dicarboxylated salicylamide intermediate. The present invention also relates to dicarboxylic salicylamide delivery agent compounds for ...	01/30/2007
7154009	Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of propene to acrolein A process for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of propene to acrolein, in which the temperature of the fixed catalyst bed is increased over the time and the gas phase partial oxidation is interrupted at least once pe...	12/26/2006
7132092	Metallized mesoporous silicate and method of oxidation with the same A metallized mesoporous silicate which is obtained by (i) reacting (a) either a metal peroxide obtained by the reaction of an aqueous hydrogen peroxide solution with at least one metal or metal compound selected from the group consisting of the following 1) to 4) 1)...	11/07/2006
7129195	Heterogenically catalysed gas-phase partial oxidation method for precursor compounds of (meth)acrylic acid The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said ge...	10/31/2006
7115776	Heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound A process for the heterogeneously catalyzed gas-phase partial oxidation of an organic compound over a fixed catalyst bed present in a fixed-bed reactor having a plurality of catalyst tubes, in which the reduction of the quality of the catalyst load with increasing d...	10/03/2006
7115775	Method and device for the two-step production of acrylic acid α,β-ethylenically unsaturated aldehydes and/or carboxylic acids are prepared by means of a two-stage catalytic gas-phase oxidation in which a gas mixture comprising at least an alkane or alkene having from three to six carbon atoms and oxygen is subjected to a cat...	10/03/2006
7081549	Process for the production of acetic acid A process for the production of acetic acid, which process comprises contacting ethane and/or ethylene with a molecular oxygen-containing gas in a fluid bed reactor in the presence of a microspheroidal fluidised particulate solid oxidation catalyst, wherein at least...	07/25/2006
7078563	Oxidation process for the production of alkenes and carboxylic acids A process for the oxidation of a C2 to C4 alkane to produce the corresponding alkene and carboxylic acid which process comprises contacting in an oxidation reaction zone, said alkane, molecular oxygen-containing gas, and the corresponding alken...	07/18/2006
7026506	Method for producing acrylic acid by heterogeneously catalyzed gas-phase oxidation of propene with molecular oxygen in a reaction zone In a process for the preparation of acrylic acid by heterogeneously catalyzed gas-phase oxidation of propene with molecular oxygen in a reaction zone, the catalytically active material is a multimetal oxide which contains the elements Mo, V, Te and/or Sb and has a s...	04/11/2006
7015355	Method for the selective production of acetic acid by catalytic oxidation of ethane and/or ethylene A method for the selective production of acetic acid from a gas-phase feed of ethane, ethylene, or mixtures thereof and oxygen at elevated temperatures. The gas-phase feed is brought into contact with a catalyst, containing the elements Mo, Pd, X and Y in the gram a...	03/21/2006
6998504	Method for the catalytic gas phase oxidation of propene into 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 a high propene loading, in a first reaction stage, over a first fixed-bed catalyst which is housed in two successive reaction zon...	02/14/2006
6958414	Preparation of at least one organic compound by heterogeneously catalyzed partial gas-phase oxidation Organic compounds are prepared by heterogeneously catalyzed partial gas-phase oxidation of precursor compounds by a process in which a portion of the reaction gas starting mixture is brought from a low initial pressure to a higher final pressure by means of a radial...	10/25/2005
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
6825380	Promoted multi-metal oxide catalyst A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alken...	11/30/2004
6781013	Process for producing acrolein and acrylic acid A process is provided which can effectively inhibit occurrence of hot spots in reaction zones or heat accumulation at the hot spots, in the occasion of producing acrolein and acrylic acid through vapor phase oxidation of propylene in the presence of a catalyst using...	08/24/2004
6646158	Catalytic oxidation of alkanes to corresponding acids A mixed metal oxide Mo--V--Ga--Pd--Nb--X catalytic system, where X is selected from La, Te, and Zn, provides the oxidation of C2 -C8 hydrocarbons to corresponding acids with a molecular oxygen-containing gas....	11/11/2003
6525217	Method 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
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
6437180	Preparation of aliphatic ଱, ω-dicarboxylic acids A process for preparing aliphatic C4-18 ଱,ω-dicarboxylic acids by oxidation of C6-20 ଱,ω-dienes with hydrogen peroxide or compounds which release hydrogen peroxide under the reaction conditions as is characterized in th...	08/20/2002
6414183	Method 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
6333444	Oxidation catalyst and process utilizing the catalyst A catalyst composition and its use for the oxidation of ethane to ethylene and/or acetic acid and/or for the oxidation of ethylene to acetic acid which comprises in combination with oxygen the elements molybdenum, vanadium, niobium and gold in the absence...	12/25/2001
6084124	Method 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
6084127	Method for recovering acrylic acid An improved method which enables stable and effective recovery of acrylic acid over a prolonged period is provided, said method comprising contacting an acrylic acid-containing gas obtained upon gas-phase catalytic oxidation of propylene and/or acrolein, ...	07/04/2000
5945562	Process of preparing perfluoroalkylcarboxylic acid A process of preparing a perfluoroalkylcarboxylic acid by an oxidative decomposition reaction of a perfluoroalkylethylene corresponding to a general formula: Rf--CH.dbd.CH2 wherein, Rf is a perfluoroalkyl group containing 2 to 14 carbon atoms.! to...	08/31/1999
5736012	Process for the preparation of a fluorinated acid A process for the preparation of a fluorinated acid such as trifluoroacetic acid, including admixing an hydrofluorocarbon, such as 1,1,1-trifluoroethane, with chlorine, an oxidizing agent and an additive to prevent or minimize decomposition; and irradiati...	04/07/1998
5731460	Oxidative cleavage of alkenes with a catalyst system containing a source of molybdenum, a source of rutlenium and a phase transfer agent A catalyst system and process for the oxidative cleavage of alkenes with hydrogen peroxide is provided. The catalyst system comprises a source of ruthenium, a source of molybdenum and a phase transfer agent. The process comprises contacting an alkene with...	03/24/1998
5646305	Oxygen enrichment process for air based gas phase oxidations which use metal oxide redox catalysts This invention is directed towards an improved process for the selective gas phase oxidation of a organic reactant using a metal oxide redox catalyst, wherein the organic reactant and air feeds are at a substantially continuous level, the improvement comp...	07/08/1997
5591893	Process for the preparation of polycarboxylic acids and derivatives thereof The invention relates to a process for the preparation of polycarboxylic acids and derivatives thereof, the polycarboxylic acids prepared containing at least three carboxyl groups, comprising the steps (A) introducing one or more organic compounds, which conta...	01/07/1997
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
5410072	Mixtures of isomeric pentanoic acids, esters prepared therefrom, and their use as lubricants Isomeric mixtures of pentanoic acids are prepared by subjecting butene-1/butene-2 mixtures to hydroformylation to form aldehyde mixtures, followed by oxidation of the aldehyde mixtures which have been separated off from the reaction product. The hydroform...	04/25/1995
5399749	Catalyzed process for oxidation of ozonides of unsaturates to carboxylic acids Zeolites, particularly X type zeolites, essentially irrespective of the cation they contain, are effective heterogeneous catalysts for the oxidative conversion of the products of reaction of organic molecules containing a --HC.dbd.CH-- structure with ozon...	03/21/1995
5393922	Catalytic direct oxidation of hydrocarbons to acids A process for catalytic direct oxidation of hydrocarbons, particularly lower alkanes and single ring aromatics, to acids by dioxygen under mild temperature conditions using specified metal or metal salt catalysts. Turnovers in excess of 1000 for acetic ac...	02/28/1995

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Class 562/544 - Olefin