| EVONIK OXENO GMBH Patent applications |
| Patent application number | Title | Published |
|---|
| 20120123169 | PROCESS FOR PREPARING ALPHA,BETA-UNSATURATED C10-ALDEHYDES - The invention relates to a method for continuously producing α,β-unsaturated C | 05-17-2012 |
| 20120116140 | WORK-UP OF A 3-METHYL-1-BUTENE-CONTAINING MIXTURE - The invention is a method for processing a mixture containing water, 3-methyl-1-butene and at least one other methylbutene. The method comprises primary distillation of the mixture, giving a gaseous primary overhead product containing methylbutene and water and a water-free primary bottom product containing 3-methyl-1-butene; condensation of the gaseous primary overhead product so as to give a condensate comprising a liquid aqueous phase and a liquid organic phase; separation of the condensate into a liquid aqueous phase and a liquid organic phase; discharge of the liquid aqueous phase; recirculation of the organic phase to the primary distillation; and finally secondary distillation of the water-free primary bottom product from the primary distillation so as to give a secondary overhead product comprising 3-methyl-1-butene and a secondary bottom product. The secondary overhead product obtained has a purity which enables it to be used directly as monomer or comonomer for preparing polymers or copolymers. | 05-10-2012 |
| 20120046503 | METHOD FOR ENRICHING A HOMOGENEOUS CATALYST FROM A PROCESS FLOW - The invention relates to a method for enriching a homogenous catalyst from a process flow comprising said homogenous catalyst as a component, wherein the process flow is conducted over at least one membrane and wherein the membrane wholly or partially comprises a polymer that has planar polymer units connected to one another via a rigid link and wherein the linker is contorted, such that at least one planar polymer unit is connected to at least one second planar polymer unit via the link, in a non-co-planar arrangement. The invention furthermore relates to a method for producing tridecanal. | 02-23-2012 |
| 20120035382 | METHOD FOR SEPARATION AND PARTIAL RETURN OF RHODIUM AND CATALYTICALLY EFFECTIVE COMPLEX COMPOUNDS THEREOF FROM PROCESS STREAMS - The invention relates to a method for separating and partially returning transition metals and/or catalytically effective complex compounds thereof from a reaction mixture by combining one at least one-stage membrane separation and an adsorption, wherein a current comprising a catalyst, comprising a transition metal, is divided over at least one one-stage membrane separation step in a transition metal enriched retentate stream that resupplies the reaction mixture and a transition metal depleted permeate stream and the transition metal depleted permeate stream is further supplied to an adsorption step. The invention further relates to a method for producing tridecanals. | 02-09-2012 |
| 20120022223 | POLYOLEFIN GAS PHASE POLYMERIZATION WITH 3-SUBSTITUTED C4-10-ALKENE - An alkene interpolymer is prepared by polymerizing at least one 3-substituted C | 01-26-2012 |
| 20120022208 | PE MIB FILM ZN/CR - A film containing an interpolymer of ethylene and a 3-substituted C | 01-26-2012 |
| 20120010354 | PE FILM SS COMPRISING INTERPOLYMERS WITH 3-SUBSTITUTED C4-10-ALKENE WITH SINGLE SITE CATALYSTS - A film, comprising: an interpolymer of ethylene; and a 3-substituted C | 01-12-2012 |
| 20110207966 | METHOD FOR PRODUCING 6-CHLORODIBENZO[D,F] [1,3,2]-DIOXAPHOSPHEPIN - The invention relates to a method for producing 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin (formula 1), comprising the following steps: a) addition of 2,2′-dihydroxybiphenyl, which is suspended in an inert solvant. into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride and the solvant; d) obtention of 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin. | 08-25-2011 |
| 20110201837 | METHOD FOR PRODUCING 6-CHLORODIBENZO[D,F] [1,3,2]DIOXAPHOSPHEPIN - The invention relates to a method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin (formula 1), comprising the following steps: a) addition of liquid 2,2′-dihydroxybiphenyl into a reactor to an excess of phosphorous trichloride under inert gas and stirring; b) discharge and neutralization of the resulting gases from the reaction mixture; c) separation of the excess phosphorous trichloride; d) obtention of 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin. | 08-18-2011 |
| 20110201767 | PROCESS FOR PREPARING POLYMERS FROM 3-METHYLBUT-1-ENE - The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group. | 08-18-2011 |
| 20110144391 | PARALLELIZED JET LOOP REACTORS - The invention relates to a device and a method for the continuous reaction of a liquid and a second fluid, wherein the device comprises at least two jet loop reactors interconnected in parallel and common outer liquid recirculation. | 06-16-2011 |
| 20110130595 | PROCESS FOR PREPARING C5 ALDEHYDE MIXTURES WITH A HIGH N-PENTANAL CONTENT - A process for preparing a C | 06-02-2011 |
| 20110118523 | PROCESS FOR PREPARING ISOBUTENE BY CLEAVING MTBE-CONTAINING MIXTURES - A process for preparing isobutene from MTBE-containing mixtures, including: a) in a reactor, cleaving a mixture obtained from an MTBE-containing feedstock and/or an MTBE-containing stream, affording a stream of reaction products including isobutene, methanol, MTBE, and by-products, which are a1) high boilers having a boiling range above 55° C. at a pressure of 0.1 MPa, a2) medium boilers having a boiling range of 12 to 55° C. at a pressure of 0.1 MPa, and a3) low boilers having a boiling range below 12° C. at a pressure of 0.1 MPa; b) distillatively separating stream into a stream which contains the isobutene product and low boilers, and a stream which contains MTBE, methanol, medium boilers and high boilers; c) distillatively separating stream to obtain an MTBE-containing stream and a methanol-containing high boiler stream; and d) recycling an MTBE-containing stream into a) of the process, the medium boilers being removed completely or partially before d) from the streams rich in medium boilers. | 05-19-2011 |
| 20110071321 | METHOD FOR SEPERATING 1-BUTENE FROM C4-CONTAINING HYDROCARBON STREAMS BY HYDROFORMYLATION - The invention relates to a method for separating 1-butene from C | 03-24-2011 |
| 20110060169 | HYDROGENATION CATALYST AND PROCESS FOR PREPARING ALCOHOLS BY HYDROGENATION OF CARBONYL COMPOUNDS - The invention relates to a hydrogenation catalyst which comprises a support material and at least one hydrogenation-active metal and in which the support material is based on titanium dioxide, zirconium dioxide, aluminium oxide, silicon oxide or mixed oxides thereof and the hydrogenation-active metal is at least one element from the group consisting of copper, cobalt, nickel, chromium, wherein the support material contains the element barium. | 03-10-2011 |
| 20110046283 | CITRIC ESTER MIXTURES AND THEIR USE - The present invention relates to mixtures of citric esters of the formula I, | 02-24-2011 |
| 20110034739 | CATALYST AND PROCESS FOR PREPARING SATURATED ETHERS BY HYDROGENATING UNSATURATED ETHERS - The invention relates to a supported catalyst based on palladium-γ-alumina, which is characterized in that the catalyst support material contains 1 to 1000 ppm by mass of sodium oxide and has a specific pore volume of 0.4 to 0.9 ml/g and a BET surface area of 150 to 350 m | 02-10-2011 |
| 20100305255 | MIXTURES OF DIISONONYL ESTERS OF TEREPHTHALIC ACID, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF - The invention relates to mixtures of diisononyl esters of terephthalic acid, characterized in that the isomeric nonyl radicals bound in the ester mixture have an average degree of branching of 1.0 to 2.2. Said mixtures can advantageously be used as softeners or part of a softener composition in plastics or plastic components. | 12-02-2010 |
| 20100249464 | ONE-STAGE CONTINUOUS PROCESS FOR HYDROFORMYLATING HIGHER OLEFINS OR OLEFIN MIXTURES - The invention relates to a one-stage continuous process for hydroformylating olefins having at least 5 carbon atoms to the corresponding aldehydes and/or alcohols having at least 6 carbon atoms in the presence of unmodified cobalt catalysts in a process in which, in the presence of an aqueous phase and of an organic phase, catalyst formation, catalyst extraction and hydroformylation proceed in the same reactor, which is characterized in that more aqueous cobalt salt solution is fed into the reactor as an aqueous phase with the liquid reaction mixture and is discharged from the reactor with the gas phase, and in that the level of the aqueous bottom phase is kept constant by continuously conducting a portion of the aqueous bottom phase out of the reactor. | 09-30-2010 |
| 20100210880 | MULTISTAGE CONTINUOUS PROCESS FOR THE HYDROFORMYLATION OF HIGHER OLEFINS OR OLEFIN MIXTURES - The invention relates to a process for the continuous preparation of aldehydes and/or alcohols having at least 6 carbon atoms by multistage hydroformylation of olefins or olefin mixtures having at least 5 carbon atoms in the presence of unmodified cobalt complexes, in which at least two reactors are operated at different temperatures in the temperature range from 100 to 220° C. and pressures of from 100 to 400 bar, which is characterized in that
| 08-19-2010 |
| 20100137623 | STABLE CATALYST PRECURSOR OF RH COMPLEX CATALYSTS - The present invention relates to the preparation and use of stable catalyst precursors of rhodium complex catalysts. | 06-03-2010 |
| 20100036143 | BISPHOSPHITE LIGANDS FOR HYDROFORMYLATION CATALYZED BY TRANSITION METALS - The invention relates to a bisphosphite of the formula I | 02-11-2010 |
| 20090301348 | MIXTURE OF DIESTERS OF DIANHYDROHEXITOL DERIVATIVES WITH CARBOXYLIC ACIDS OF THE EMPIRICAL FORMULA C8H17COOH, PROCESS FOR PREPARING THESE DIESTERS, AND USE OF THESE MIXTURES - The present invention relates to a mixture comprising diesters of the formula (I) where R | 12-10-2009 |
| 20090292146 | CATALYST PRECURSOR FOR AN Rh COMPLEX CATALYST - The present invention relates to the preparation and use of stable catalyst precursors of rhodium complex catalysts. | 11-26-2009 |
| 20090203858 | PROCESS FOR PREPARING POLYMERS FROM 3-METHYLBUT-1-ENE - The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group. | 08-13-2009 |
| 20090163687 | PROCESS FOR PREPARING 3-METHYLBUT-1-ENE - The present invention relates to the preparation of 3-methylbut-1-ene from a hydrocarbon stream I comprising isobutene by feeding a hydrocarbon stream II which comprises at least 70% by mass of isobutene in relation to the olefins present in the hydrocarbon stream and which has been obtained from hydrocarbon stream I or is identical to it to a process step for hydroformylation in which isobutene is hydroformylated in the presence of a rhodium catalyst, hydrogenating the aldehyde obtained from the hydroformylation of isobutene to the corresponding alcohol and preparing 3-methylbut-1-ene by water elimination from the alcohol. | 06-25-2009 |
| 20090032465 | METHOD FOR THE ELIMINATION OF METAL COMPLEX CATALYSTS FROM TELOMERIZATION MIXTURES - Process for separating a metal complex catalyst from a reaction mixture obtained from a telomerization reaction, wherein the metal complex catalyst is separated off at least one membrane which is more permeable to the telomerization product than to the metal complex catalyst. | 02-05-2009 |
| 20080251456 | Method for Separating Organic Transition Metal Complex Catalysts - Process for separating a dissolved complex catalyst of a metal of group 4, 5, 6, 7, 8, 9 or 10 of the Periodic Table of the Elements and/or any free organophosphorus ligand present from a nonaqueous hydroformylation reaction mixture which contains an aldehyde product and an organic solvent at least one membrane which is more permeable to the hydroformylation product than to the organophosphorus ligand, the separation being carried out under a carbon monoxide partial vapor pressure of more than 200 kPa. | 10-16-2008 |
