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| Number | Title | Issue Date |
| 7745655 | Method for the preparation of biphosphites The present invention relates to a process for preparing bisphosphites which contain dioxaphosphorinone units. ... | 06/29/2010 |
| 7683204 | Mixture of alicyclic polycarboxylic acid esters having high cis isomer content The present invention relates to mixtures of alicyclic polycarboxylic esters with high cis content, to a process for their preparation by ring-hydrogenation of the corresponding aromatic polycarboxylic esters, and also to the use of the mixtures. ... | 03/23/2010 |
| 7638568 | Use of isononyl benzoate as a film-forming agent The present invention relates to the use of isononyl esters of benzoic acid as film-forming agents in compositions such as emulsion paints, mortars, plasters, adhesives, and varnishes, and also to compositions which comprise film-forming polymers and the isononyl es... | 12/29/2009 |
| 7632961 | Method for the production of alicyclic polycarboxylic acid esters from partial esters of aromatic polycarboxylic acids The invention relates to a process for preparing full esters of alicyclic polycarboxylic acids from partial esters of aromatic polycarboxylic acids by hydrogenation of the partial ester followed by esterification of this compound. ... | 12/15/2009 |
| 7611683 | Apparatus and process for the continuous reaction of a liquid with a gas over a solid catalyst A reactor, which is capable of accommodating a reaction in which at least three phases are present and at least one gaseous starting material and at least one liquid starting material are reacted in cocurrent over a fixed-bed catalyst to give one or more product(s),... | 11/03/2009 |
| 7595421 | Tripentyl citrates and their use A tripentyl citrate having an optionally acylated, preferably acetylated, OH group, a process for making the tripentyl citrate, and the use of the tripentyl citrate as a plasticizer for plastics. ... | 09/29/2009 |
| 7569196 | Device for carrying out liquid reactions with fine-grained solid catalysts and method for the use thereof A reactor for carrying out catalyzed liquid reactions in which the catalyst is present as a dispersion in the reaction zone. The reactor includes at least one inlet and outlet, with all starting materials being fed in via the inlet and all products being discharged ... | 08/04/2009 |
| 7541506 | Method for the telomerisation of non-cyclic olefins The invention relates to a process for the telomerization of acyclic olefins having at least two conjugated double bonds (I) or mixtures in which such olefins are present with nucleophiles (II) using a metal-carbene complex as catalyst. ... | 06/02/2009 |
| 7524997 | Process for the hydrogenation of oxo aldehydes having high ester contents A hydrogenation catalyst is used for the catalytic hydrogenation of an ester-containing aldehyde mixture and the catalyst contains a γ-alumina having a BET surface area of from 70 to 350 m2/g as support material, and at least one component having hydroge... | 04/28/2009 |
| 7495133 | Method for hydroformylating olefins in the presence of organophosphoric compounds (EN) The invention relates to the use of novel organophosphoric compounds and metal complexes thereof in catalytic reactions, and to the hydroformylation of olefins in the presence of these compounds. ... | 02/24/2009 |
| 7473812 | Method for producing butene oligomers and tert-butyl ethers from Cflows containing isobutene The invention relates to a process for preparing butene oligomers and tert-butyl ethers from C4 hydrocarbon streams, by converting the isobutene to butene oligomers and tert-butyl ethers and removing them from the C4 streams. ... | 01/06/2009 |
| 7473808 | Process for preparing ethyl tert-butyl ether using ethanol dewatered by a membrane process A process for preparing ethyl tert-butyl ether (ETBE) using low-water ethanol obtained by membrane dewatering at least two streams of relatively water-rich ethanol that have a different water content. by dewatering at membranes. ... | 01/06/2009 |
| 7462745 | Method for the production of 2,7-octadienyl derivatives Process for preparing 1-octa-2,7-dienyl derivatives by reacting a 1,3-butadiene-containing hydrocarbon mixture, in particular a C4 fraction from a cracker, with nucleophiles, in which acetylenically unsaturated compounds are removed from the starting hydr... | 12/09/2008 |
| 7439413 | Method for the production of isobutene from commericial methyl tert-butly ether The invention relates to a process for preparing high-purity isobutene from industrial methyl tert-butyl ether (MTBE) and the economical utilization of the secondary streams. ... | 10/21/2008 |
| 7435848 | Method for preparing alicyclic carboxylic acids and their esters A method for the continuous preparation of an alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. An article made of a plastic which incorpor... | 10/14/2008 |
| 7432407 | Hydroisomerization of olefins comprising between 4 and 6 carbon atoms The invention relates to a process by which C4- to C6-olefins or an essentially sulfur-free olefin cut comprising C4- to C6-olefins is isomerized over a catalyst comprising an element of the eighth transition group of the ... | 10/07/2008 |
| 7399892 | Process for dewatering ethanol A process for preparing low-water ethanol from at least two streams of relatively water-rich ethanol that have a different water content by dewatering at membranes. The low-water ethanol can be used to prepare ethyl tert-butyl ether (ETBE). ... | 07/15/2008 |
| 7381838 | Preparation of tertiary carboxylic acids Process for carrying out catalytic multiphase reactions in a tubular reactor, in which at least three reactants are present in three different phases, wherein the process is carried out in at least one tubular reactor, and the catalyst is present in a continuous pha... | 06/03/2008 |
| 7371909 | Method for producing 1-olefins using palladium carbene compounds The invention relates to a process 1-olefins by telomerization of compounds having conjugated double bonds with a telogen in the presence of a noble metal telomerization catalyst, hydrogenation of the telomer and cleavage of the hydrogenated intermediate. Use of the... | 05/13/2008 |
| 7368621 | Method for producing 1-octene from crack-C The invention relates to a process for preparing 1-octene from a C4 fraction from a cracker by telomerization of the 1,3-butadiene present in the C4 fraction from a cracker by means of methanol in the presence of a catalyst, hydrogenation of th... | 05/06/2008 |
| 7361714 | Catalyst and method for hydrogenating aromatic compounds The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or esters of these, via ring hydrogenation of the corresponding aromatic polycarboxylic acids or esters of these, and also to catalysts ... | 04/22/2008 |
| 7354883 | Catalyst and method for the production of 1-olefins from 2-hydroxylkanes The present invention relates to a process for preparing 1-olefins from 2-hydroxyalkanes by catalytic elimination of water under nonisomerizing conditions and to a catalyst which is particularly well-suited for this process and formally comprises yttrium oxide (Y | 04/08/2008 |
| 7345185 | Method for producing organoacylphosphites The present invention relates to a process for preparing organophosphites, organosphonites and organophosphinites by condensing phosphorus trihalides or organophosphorus halides with organic compounds bearing hydroxyl groups in the presence of polymeric basic ion ex... | 03/18/2008 |
| 7342144 | Method for producing 1-olefins by catalytically splitting 1-alkoxyalkanes The present invention relates to a process for preparing 1-olefins from 1-alkoxyalkanes, in particular to the preparation of 1-octene from 1-alkoxyoctane, by base-catalyzed alcohol cleavage. ... | 03/11/2008 |
| 7323588 | Isononyl benzoates and their use The invention relates to isomeric nonyl benzoates, processes for their preparation, mixtures of the same with alkyl phthalate, alkyl adipate, or alkyl cyclohexanedicarboxylate, and also to the use of these mixtures. ... | 01/29/2008 |
| 7323586 | Phthalic acid alkyl ester mixtures with controlled viscosity Mixtures of isomeric dialkyl phthalates that have a desired viscosity are prepared by esterifying phthalic acid or phthalic anhydride with a mixture of isomeric alkyl alcohols having a certain carbon number of carbon atoms, where the molar fraction of each alkyl alc... | 01/29/2008 |
| 7317130 | Method for the hydroformylation of olefinically unsaturated compounds, especially olefins, in the presence of cyclic carbonic acid esters The present invention relates to a process for preparing aldehydes by hydroformylation of olefinically unsaturated compounds catalyzed by metals of groups 8 to 10 of the Periodic Table of the Elements in the presence of cyclic carbonic esters and ligands which conta... | 01/08/2008 |
| 7304188 | Preparation of highly pure methyl tert-butyl ether The invention relates to a process for preparing methyl tert-butyl ether (MTBE) in qualities which are suitable for organic syntheses and for use as a specialty solvent from MTBE in fuel quality. ... | 12/04/2007 |
| 7235704 | Process for preparing isobutene from tert-butanol Isobutene is prepared by dissociating tert-butanol into isobutene and water over an acid ion-exchange resin arranged as a fixed bed in at least one reactor at a temperature of from 80 to 150° C. and at a pressure of from 5 to 25 bar to obtain a reaction mixture, se... | 06/26/2007 |
| 7232931 | Method 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 |
| 7217828 | Phosphinine compounds and metal complexes thereof Phosphinines of formula (I) can be combined with metal salts to prepare hydroformylation catalysts. The phosphinine complexes have two phosphorus centers that may be substituted with a variety of hetero atoms or alkyl substituents to modify the ligand characteristic... | 05/15/2007 |
| 7205349 | Isodecyl benzoate mixtures, preparation, and their use The invention relates to isomeric nonyl benzoates, processes for their preparation, mixtures of the same with alkyl phthalate, alkyl adipate, or alkyl cyclohexanedicarboxylate, and also to the use of these mixtures. ... | 04/17/2007 |
| 7193116 | Method for producing aldehydes by means of hydroformylation of olefinically unsaturated compounds, said hydroformylation being catalyzed by unmodified metal complexes in the presence of cyclic carbonic acid esters The present invention relates to a process for preparing aldehydes by hydroformylation catalyzed by metals of groups 8 to 10 of the Periodic Table of the Elements in the presence of cyclic carbonic esters. ... | 03/20/2007 |
| 7179948 | Process for preparing tert-butanol The invention relates to a process for preparing tert-butanol by reaction of a homogeneous mixture comprising water, tert-butanol and an isobutene-containing hydrocarbon mixture over an acidic ion-exchange resin at from 30 to 120° C., wherein the homogeneous mixtur... | 02/20/2007 |
| 7179947 | Process for the hydroformylation of olefins A process for the catalytic hydroformylation of olefins having from 6 to 24 carbon atoms, in which the hydroformylation is carried out in one or more stage(s) and a mixture comprising at least one olefin and an aldehyde in a molar ratio of aldehyde to olefin of from... | 02/20/2007 |
| 7161020 | Phosphite compounds and novel phosphite metal complexes Phosphites of the formula I and phosphite-metal complexes, their preparation and their use in catalytic reactions, in particular in processes for the hydroformylation of olefins, are described. ... | 01/09/2007 |
| 7161053 | Oligomerization of isobutene in N-butenic hydrocarbon streams Isobutene in isobutenic hydrocarbon mixtures is oligomerized over a solid acidic ion exchange resin, said acidic ion exchange resin containing, for example, sulfonic acid groups, some of whose protons have been exchanged for metal ions. ... | 01/09/2007 |
| 7125474 | Process for removing 2-butanol from tert-butanol/water mixtures The invention relates to a process for separating 2-butanol from an industrial mixture which includes 2-butanol, tert-butanol and water by separating water from the industrial mixture by distillation to obtain a distillate, wherein the distillate has, in terms of th... | 10/24/2006 |
| 7026519 | Obtaining tert-butanol The invention relates to a process for preparing tert-butanol (TBA) by reacting isobutene-containing hydrocarbon mixtures with water over acidic solid catalysts in a plurality of reactors, wherein the conversion is increased upstream of the last reactor by removing ... | 04/11/2006 |
| 7009068 | Phosphite compounds and the metal complexes thereof Phosphites of the formula I or II and their metal complexes, their preparation and the use of the phosphites as ligands in catalytic reactions, in particular in processes for the hydroformylation of olefins, are describ... | 03/07/2006 |
