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Class 568/882 - Including hydroformylation


Subclass of Class 568 - Organic compounds -- part of the class 532-570 series
Definition: Processes which include the synthesis of the aldehyde or
No. of patents: 120
Last issue date: 03/22/2011


1      
NumberTitleIssue Date
7910782Cobalt recovery from cobalt catalysed hydroformylation reactions
In a hydroformylation reaction, the circulation and recovery of cobalt carbonyl in a cobalt catalyst cycle using carbonylate as an intermediate and acidification thereof, is improved by supplying an aqueous sulfuric acid solution containing less than 16% wt of sulfu...
03/22/2011
7586017Hydrogenation
The use of a controlled amount of water in a hydrogenation stage of the oxo process for the production of alcohols which uses at least two reactors in series improves the efficiency of the hydrogenation reaction and catalyst life as does a reduction in the amount of...
09/08/2009
7381852Process for hydrogenating an aldehyde
The present invention relates to a process for hydrogenating an aldehyde. An aldehyde is contacted with a catalyst comprising a support containing at least 95% α-alumina and non-support metals dispersed on the surface of the support. The non-support metals comprise...
06/03/2008
7335800Hydrogenation catalyst and hydrogenation method
The present invention provides a hydrogenation catalyst effective for hydrogenating 3-hydroxypropionaldehyde to 1,3-propanediol. The hydrogenation catalyst comprises an α-alumina support, nickel, ruthenium, and a promoter. The nickel is deposited on the α-alumina ...
02/26/2008
7329783Hydroformylation process
A hydroformylation process comprising reacting a feedstock composition comprising a compound having at least one olefinic carbon-to-carbon bond with hydrogen and carbon monoxide in the presence of an organophosphine modified cobalt hydroformylation catalyst, wherein...
02/12/2008
7288693Pulse flow reaction
A method of operating a multi-phase downflow reactor so as to induce a pulsing flow regime is disclosed. The pulse may be induced by increasing the gas rate while maintaining the liquid rate until a pressure drop sufficient to induce the pulse flow is achieved. The ...
10/30/2007
7262147Method for preparing dehydrocyclodimerization catalyst
This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant pr...
08/28/2007
7262330Process of producing aldehydes
A process of producing aldehydes in a continuous hydroformylation process of continuously reacting an olefinic unsaturated compound with carbon monoxide and hydrogen in the presence of a rhodium-phosphite based complex catalyst and continuously separating at least o...
08/28/2007
7232934Hydrogenation of oxo aldehydes to oxo alcohols in the presence of a nickel-molybdenum catalyst
A reduced or partially reduced nickel-molybdenum catalyst prepared by a process having the steps of 1) reacting nickel carbonate and molybdenum oxide precursors to form nickel molybdate and 2) treating the nickel molybdate under reducing conditions to form the reduc...
06/19/2007
7232931Method for the rhodium-catalyzed hydroformylation of olefins with reduction of rhodium losses
Process for preparing aldehydes and alcohols by rhodium-catalyzed hydroformylation of olefins having 6–20 carbon atoms with subsequent separation by distillation of the output from the hydroformylation reaction into the hydroformylation products and a rhodium-cont...
06/19/2007
7227045Process for the preparation of linear olefins and use thereof to prepare linear alcohols
Process for the preparation of a mixture comprising C5+ linear olefins, which process comprises the steps of (a) reacting carbon monoxide and hydrogen in the presence of an effective amount of Fischer-Tropsch catalyst un...
06/05/2007
7208646Selective hydrogenation of butadiene
A process for the selective hydrogenation of dienes in mixed streams of olefin containing hydrocarbons, such as butadiene in a mixed C4 stream with minimum loss of monoolefins is disclosed wherein the reactor is operated at conditions which induce pulse f...
04/24/2007
7202205Processes for making surfactants via adsorptive separation and products thereof
Processes for making particularly branched, especially monomethyl-branched or nongeminal dimethyl-branched surfactants used in cleaning products; preferred processes comprising particular combinations of two or more adsorptive separation steps and, more preferably, ...
04/10/2007
7186868Hydroformylation process for the conversion of an ethylenically unsaturated compound to an alcohol
The invention pertains to a hydroformylation process for the conversion of an ethylenically unsaturated compound to an alcohol comprising a first step of reacting at an elevated temperature in a reactor the ethylenically unsaturated compound, carbon monoxide, hydrog...
03/06/2007
7154012Process for preparing alcohols from olefins by hydroformylation and hydrogenation
A process for preparing aliphatic alcohols that includes cobalt-catalyzed hydroformylation of olefins, treatment of a hydroformylation mixture with oxygen-containing gases in the presence of acidic, aqueous cobalt(II) salt solutions, separation of a mixture into an ...
12/26/2006
7138552Method for producing C-alcohol mixtures
The present invention relates to a process for preparing a C13-alcohol mixture which is suitable, in particular, as precursor for the preparation of compounds having surfactant properties and of plasticizers. ...
11/21/2006
7081553Cobalt flash process
The Cobalt Flash Process is modified by replacing formic acid with acetic acid as process acid. Efficiency using acetic acid as process acid is achieved by two improvements which may be added separately and independently: (1) separation of acetic acid and water from...
07/25/2006
7081554Oxo process
The Oxo Process that recycles its cobalt primarily as cobalt salt is improved by concentration of the cobalt salt solution from the demetalling section and the addition of a separation step for organic acid and water. This allows for a higher reuse of acid in the pr...
07/25/2006
7074304Process for purifying alicyclic alcohols
A process for purifying alicyclic alcohols by distillation, wherein the alicyclic alcohols are distilled in the presence of from 1 to 550 ppm of acidic compounds. ...
07/11/2006
6969736Plasticizers from less branched nonyl alcohols
Less branched C9 alcohols are used to provide plasticizer esters particularly suitable for high temperature applications such as wire and cable insulation. ...
11/29/2005
6969735Plasticizers from less branched decyl alcohols
Less branched C10 alcohols are used to provide plasticizer esters particularly suitable for high temperature applications such as wire and cable insulation. ...
11/29/2005
6960699Method for the hydroformylation of olefins
The invention relates to a process for preparing alcohols by hydroformylation of olefins or olefin mixtures, separation from the catalyst and subsequent hydrogenation, with an extraction being carried out after removal of the catalyst and before the hydrogenation of...
11/01/2005
6930213Process for the hydrogenation of acetone
Acetone is hydrogenated by a process comprising, conducting the liquid-phase hydrogenation of acetone in at least two hydrogenation process stages, thereby preparing isopropanol product with a high selectivity and in high purity. ...
08/16/2005
6765119Method of producing saturated C3-C20-alcohols
The invention relates to a process for the preparation of saturated C3-C20-alcohols in which a liquid hydrogenation feed comprising at least one C3-C20-aldehyde is passed over a bed of a hydrogenation catalyst in the prese...
07/20/2004
6720457Process for the hydroformylation of higher olefins using cobalt compounds as catalyst
Olefins having from 5 to 24, in particular from 5 to 12, carbon atoms are hydroformylated by reacting an olefin or a mixture of olefins in the presence of an unmodified cobalt catalyst in a single-stage process in a reactor at a temperature of from 100° C. to 220°...
04/13/2004
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
6482972Isomeric nonanols and decanols, their preparation, phthalic esters obtained therefrom and their use as plasticizers
Mixtures of isomeric nonanols and decanols are obtained by joint aldol condensation of n-butanal and pentanals, and up to 1% by weight of 3-methylbutanal, hydrogenation of the aldol condensation product to the corresponding saturated alcohols, and separat...
11/19/2002
6455743Process for producing alcohols
A process for producing alcohols, which comprises subjecting a mixture comprising an aldehyde having from 2 to 5 carbon atoms and a polycondensate of the aldehyde at a weight ratio of from 95:5 to 5:95 to a mixing hydrogenation reaction in the presence of...
09/24/2002
6444863Process for producing alcohols
A process for producing alcohols, to obtain a straight-chain alcohol having a carbon number of n (where n=3 to 6), a branched chain alcohol having a carbon number of n (where n=3 to 6) and a branched chain alcohol having a carbon number of 2n (where n=3 t...
09/03/2002
6331657Process for preparing higher oxo alcohols from olefin mixtures by two-stage hydroformylation
A process for preparing higher oxo alcohols from mixtures of isomeric olefins having from 5 to 24 carbon atoms by two-stage hydroformylation in the presence of a cobalt catalyst or rhodium catalyst at elevated temperature and at elevated pressure, which c...
12/18/2001
6278030Process for preparing alcohols by the Oxo process
An improved process for preparing alcohols by the Oxo process. More particularly this invention relates to an improvement in the hydrogenation step of the Oxo process characterized in the use of certain bulk multimetallic hydrogenation catalysts comprised...
08/21/2001
6239318Process for the selective hydrogenation of hydroformylation mixtures
The invention relates to a process for the selective hydrogenation of reaction mixtures from the hydroformylation of C5 to C24 olefins using hydrogen and a supported catalyst which, as active components, comprises copper, nickel and ...
05/29/2001
6232512Method for reducing the content of acetals or ketals in alcohol-containing reaction mixtures
Reduction in the content of acetals or ketone acetals in a reaction mixture containing at least 10 moles alcohol per mole acetal or ketone acetal can be achieved hydrogenolytically when the reaction mixture is hydrogenated at 80° to 250° C. at a hydroge...
05/15/2001
6232282Detergent composition containing mid-chain branched surfactants and an electrolyte for improved performance
A detergent composition containing a mixture of linear alkybenzene sulfonate surfactant and mid-chain branched surfactant and an electrolyte is disclosed. The detergent composition includes a mid-chain branched primary alkyl sulfate surfactant and an elec...
05/15/2001
6228829Granular detergent compositions comprising mid-chain branched surfactants
This invention relates to granular detergent products which include mid-chain branched surfactants....
05/08/2001
6184424Process for the hydrogenation of hydroformylation mixtures
A process for the hydrogenation of reaction mixtures from the hydroformylation of C5 to C24 olefins using hydrogen on fixed catalysts at elevated temperature, in which the aldehydes, alcohols, formates and low-boilers are evaporated ...
02/06/2001
6087309Liquid cleaning compositions containing selected mid-chain branched surfactants
This invention relates to a liquid cleaning composition comprising a surfactant system containing selected mid-chain branched surfactant and co-surfactants....
07/11/2000
6060443Mid-chain branched alkyl sulfate surfactants
Mixtures of mid-chain branched primary alkyl sulfate surfactants useful in cleaning compositions, especially for lower water temperature applications, alone or formulated with other surfactants for the purpose of modifying the low temperature cleaning pro...
05/09/2000
6051743Process for the preparation of predominantly unbranched higher primary alcohols
For the preparation of predominantly unbranched higher primary alcohols, olefins from the Fischer-Tropsch synthesis are reacted with hydrogen and carbon monoxide in the presence of water and a catalyst which is rhodium, in metallic form or as a compound, ...
04/18/2000
6049011Hydroformylation process
A dilute ethylene stream, e.g., one produced by steam cracking, is oxonated to yield propanal, without the need to separate other lower hydrocarbons....
04/11/2000
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