Patents by Inventor Carl-Dieter Frohning
Carl-Dieter Frohning has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7259279Abstract: Process for the hydroformylation of olefins by linkage of the input parameters prevailing in the hydroformylation reaction to the target parameters of a hydroformylation reaction, wherein the linkage is achieved by means of at least one synthetic neuronal network.Type: GrantFiled: November 15, 2005Date of Patent: August 21, 2007Assignee: Oxea GmbHInventors: Dietmar Thiel, Carl Dieter Frohning
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Patent number: 6700021Abstract: The present invention relates to a process for preparing aldehydes by reaction of olefinically unsaturated compounds with carbon monoxide and hydrogen, wherein, during the process, rhodium is added in the form of a reaction product from the reaction of metallic rhodium and/or more than one rhodium compound with rhodium-complexing compounds and with carbon monoxide and hydrogen, the use of said reaction product in catalytic processes and also the preparation of a catalytic composition with addition of said reaction product.Type: GrantFiled: July 3, 2002Date of Patent: March 2, 2004Assignee: Celanese Chemicals Europe GmbHInventors: Hans Bohnen, Carl Dieter Frohning, Ernst Wiebus
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Publication number: 20030083528Abstract: The present invention relates to a process for preparing aldehydes by reaction of olefinically unsaturated compounds with carbon monoxide and hydrogen, wherein, during the process, rhodium is added in the form of a reaction product from the reaction of metallic rhodium and/or more than one rhodium compound with rhodium-complexing compounds and with carbon monoxide and hydrogen, the use of said reaction product in catalytic processes and also the preparation of a catalytic composition with addition of said reaction product.Type: ApplicationFiled: July 3, 2002Publication date: May 1, 2003Inventors: Hans Bohnen, Carl Dieter Frohning, Ernst Wiebus
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Patent number: 6358419Abstract: Wastewater from the aldolization reaction is purified by adjusting its pH to 0 to 6, followed by extraction with monohydric alcohols having at least 8 carbon atoms, hydrocarbons having at least 6 carbon atoms, and mixtures thereof. In some cases, adjustment of the pH causes the formation of an organic phase, which is separated from the remaining wastewater before extraction.Type: GrantFiled: May 1, 1996Date of Patent: March 19, 2002Assignee: Hoechst AktiengesellschaftInventors: Mariola Rötzheim, Wolfgang Greb, Wolfgang Zgorzelski, Carl Dieter Frohning, Klaus Denkmann, Heinz Kalbfell
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Patent number: 6274774Abstract: The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170° C. and a pressure of between 1 and 300 bar an olefinically unsaturated C6-C16 compound in the presence aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 10 and 70 wt % of a compound of formula (1), R(OCH2CH2)nOR1, R standing for hydrogen, a straight-chain or branched C1-C4 alkyl group or a C1-C4 hydroxyalkyl group, R1 standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.Type: GrantFiled: August 30, 1999Date of Patent: August 14, 2001Assignee: Celanese GmbHInventors: Sandra Bogdanovic, Carl-Dieter Frohning, Helmut Bahrmann
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Patent number: 6211414Abstract: The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170° C. and a pressure of between 1 and 300 bar an olefinically unsaturated C3-C5 compound in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 1 and 35 wt % of a compound of formula (1), R(OCH2CH2)nOR1, R standing for hydrogen, a straight-chain or branched C1-C4 alkyl group or a C1-C4 hydroxyalkyl group, R1 standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.Type: GrantFiled: August 31, 1999Date of Patent: April 3, 2001Assignee: Celanese GmbHInventors: Sandra Bogdanovic, Helmut Bahrmann, Carl-Dieter Frohning, Ernst Wiebus
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Patent number: 6191063Abstract: A catalyst comprising rhodium and a compound of the formula (I) in which m is a number from 1 to 1000; x is a number from 0 to 4; W is a group of the formulae —CH2—CH2—, —CH(CH3)CH2—or —CH2CH(CH3)—; R is hydrogen, a straight-chain or branched C1-C5— alkyl radical; or a group of the formulae where a, b, c, d and e independently of one another are a number from 0 to 1000, at least one of the numbers a, b, c, d and e being greater than 0; R5, R6, R7, R8 and R9 are identical or different and are hydrogen, C1-C5-alkyl or a group of the formula R1 and R2 are identical or different and are a straight-chain, branched or cyclic C1-C30-alkyl radical or C6-10-aryl radical, which is unsubstituted or substituted by from one to five C1-C3-alkyl radicals, and L is C1-C5-alkyl, C1-C5-alkoxy, NO2, NR3R4, where R3 and R4 independently of one another are hydrogen or C1-C4-alkyl, or L is Cl or OH, for hydroformylation reType: GrantFiled: July 1, 1999Date of Patent: February 20, 2001Assignee: Celanese GmbHInventors: Sandra Bogdanovic, Carl-Dieter Frohning, Helmut Bahrmann, Matthias Beller, Steffen Haber, Hans-Jerg Kleiner
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Patent number: 6160180Abstract: A compound is disclosed having the formula (I), in which m equals 1 to 1000; x equals 0 to 4; W is a group of formulas --CH.sub.2 --CH.sub.2 --, --CH(CH.sub.3)CH.sub.2 -- or --CH.sub.2 CH(CH.sub.3)--; R is hydrogen, a straight-chain or branched-chain C.sub.1 -C.sub.5 alkyl radical; or a group of formulas (a) or (b), in which a, b, c, d and e independently represent a number from 0 to 1000, at least one of the numbers represented by a, b, c, d and e being higher than 0; R.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are the same or different and represent hydrogen, C.sub.1 -C.sub.5 alkyl or a group of formula (c); R.sup.1 and R.sup.2 are the same or different and represent a straight-chain, a branched-chain or a cyclic C.sub.1 -C.sub.30 alkyl radical or C.sub.6 -C.sub.10 aryl radical which is non-substituted or substituted by one to five C.sub.1 -C.sub.3 alkyl radicals, or R.sup.1 and R.sup.Type: GrantFiled: April 22, 1999Date of Patent: December 12, 2000Assignee: Celanese Chemicals Europe GmbHInventors: Steffen Haber, Hans-Jerg Kleiner, Sandra Bogdanovic, Helmut Bahrmann, Carl-Dieter Frohning
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Patent number: 6096931Abstract: In a process for preparing alcohols comprising the hydrogenation of aldehydes in the presence of a hydrogenation catalyst in the gas phase, the improvement comprising adding nitrogen-containing bases to the aldehyde to be hydrogenated, whereby the formation of by-products is largely suppressed and isolation of the desired alcohols in high selectivity and correspondingly high yield is made possible.Type: GrantFiled: December 3, 1998Date of Patent: August 1, 2000Assignee: Celanese GmbHInventors: Carl Dieter Frohning, Wolfgang Zgorzelski, Hans Liebern
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Patent number: 5684215Abstract: A process for the preparation of alcohols by reaction of organic carbonyl compounds or mixtures containing them with hydrogen over a supported catalyst containing nickel, aluminum oxide, and zirconium dioxide at elevated temperature and, if appropriate, under elevated pressure. Ketones, aldehydes and derivatives thereof are reacted as the carbonyl compounds at temperatures of 60.degree. to 150.degree. C.Type: GrantFiled: December 28, 1992Date of Patent: November 4, 1997Assignee: Hoechst AktiengesellschaftInventors: Gerhardt Horn, Carl Dieter Frohning
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Patent number: 5663445Abstract: A process for the catalytic preparation of alcohols or amines by reaction of esters, fatty acids, or nitriles with hydrogen at elevated temperature and pressure. The unreduced catalyst contains, per 100 parts by weight of CuO, 40 to 130 parts by weight of ZnO, 2 to 50 parts by weight of Al.sub.2 O.sub.3, and optionally 0.5 to 8 parts by weight of oxide of Mn, Mo, V, Zr, and/or alkaline earth metal. It has a BET total area of 80 to 175 m.sup.2 /g of catalyst in the unreduced state, and 75% to 95% of the BET total area is formed by pores having a radius r.sub.p .ltoreq.15 nm.Type: GrantFiled: May 30, 1995Date of Patent: September 2, 1997Assignee: Hoechst AktiengesellschaftInventors: Gerhardt Horn, Carl Dieter Frohning
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Patent number: 4472526Abstract: The present invention relates to a process for producing ethanol and n-propanol by reacting methanol with carbon monoxide and hydrogen at elevated pressure and temperature. A system consisting of a cobalt compound, a ruthenium compound, an iodide, and an organic phosphine serves as the catalyst. The organic phosphine contains a group having a --SO.sub.3 M, --COOM or --OSO.sub.3 M radical.Type: GrantFiled: September 29, 1982Date of Patent: September 18, 1984Assignee: Ruhrchemie AktiengesellschaftInventors: Boy Cornils, Carl-Dieter Frohning, Helmut Bahrmann, Wolfgang Lipps
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Patent number: 4423156Abstract: The conventional process for the preparation of unsaturated hydrocarbons comprises catalytic hydrogenation of carbon oxides at 220.degree. to 500.degree. C. and pressures of up to 30 bars. It has been found that, by carrying out the foregoing reaction in the presence of at least one low molecular weight aliphatic alcohol, the yield of olefins and the catalyst life are substantially and surprisingly improved.Type: GrantFiled: June 13, 1983Date of Patent: December 27, 1983Assignee: Ruhrchemie AktiengesellschaftInventors: Bernd Bussemeier, Boy Cornils, Carl-Dieter Frohning