Patents by Inventor Kurt-Alfred Gaudschun
Kurt-Alfred Gaudschun 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: 9289752Abstract: The present invention relates to a catalyst for reacting carbonitriles with water, wherein the catalyst comprises at least 60% by weight of manganese dioxide with an empirical formula MnOx where x is in the range from 1.7 to 2.0, and at least one plasticizer. The present invention further relates to a process for preparing the catalysts detailed above and to a process for preparing carboxamides by reacting carbonitriles with water in the presence of the present catalyst.Type: GrantFiled: February 26, 2009Date of Patent: March 22, 2016Assignee: Evonik Röhm GmbHInventors: Alexander May, Bernd Vogel, Hermann Siegert, Kurt-Alfred Gaudschun, Thomas Quandt
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Patent number: 8680356Abstract: The present invention relates to a process for preparing a catalyst which, in a formal sense, comprises 0.1 to 20% by mass of alkali metal and/or alkaline earth metal oxide, 0.1 to 99% by mass of oxide and 0.1 to 99% by mass of silicon dioxide, which is characterized in that it aluminum comprises the steps of treating an aluminosilicate with an aqueous alkali metal and/or alkaline earth metal salt solution under acidic conditions and calcining the aluminosilicate treated with aqueous alkali metal and/or alkaline earth metal salt solution, and to a catalyst which is obtainable by this process and, in a formal sense, comprises alkali metal and/or alkaline earth metal oxide, aluminum oxide and silicon dioxide, which is characterized in that the catalyst, in a formal sense, has a content of alkali metal and/or alkaline earth metal oxides of 0.Type: GrantFiled: February 25, 2011Date of Patent: March 25, 2014Assignee: Evonik Oxeno GmbHInventors: Horst-Werner Zanthoff, Dietrich Maschmeyer, Thomas Quandt, Franz Nierlich, Silvia Santiago Fernandez, Stephan Houbrechts, Georg Skillas, Kurt-Alfred Gaudschun
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Patent number: 8207375Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefore.Type: GrantFiled: February 4, 2008Date of Patent: June 26, 2012Assignee: Evonik Oxeno GmbHInventors: Michael Grass, Alfred Kaizik, Wilfried Bueschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
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Patent number: 7977523Abstract: A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.Type: GrantFiled: August 10, 2007Date of Patent: July 12, 2011Assignee: Evonik Oxeno GmbHInventors: Horst-Werner Zanthoff, Dietrich Maschmeyer, Thomas Quandt, Franz Nierlich, Silvia Santiago Fernandez, Stephan Houbrechts, Georg Skillas, Kurt-Alfred Gaudschun
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Publication number: 20110152596Abstract: A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.Type: ApplicationFiled: February 25, 2011Publication date: June 23, 2011Applicant: OXENO OLEFINCHEMIE GMBHInventors: Horst-Werner ZANTHOFF, Dietrich Maschmeyer, Thomas Quandt, Franz Nierlich, Silvia Santiago Fernandez, Stephan Houbrechts, Georg Skillas, Kurt-Alfred Gaudschun
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Publication number: 20110034728Abstract: The present invention relates to a catalyst for reacting carbonitriles with water, wherein the catalyst comprises at least 60% by weight of manganese dioxide with an empirical formula MnOx where x is in the range from 1.7 to 2.0, and at least one plasticizer. The present invention further relates to a process for preparing the catalysts detailed above and to a process for preparing carboxamides by reacting carbonitriles with water in the presence of the present catalyst.Type: ApplicationFiled: February 26, 2009Publication date: February 10, 2011Applicant: Evonik Roehm GmbHInventors: Alexander May, Bernd Vogel, Hermann Siegert, Kurt-Alfred Gaudschun, Thomas Quandt
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Publication number: 20080146832Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefore.Type: ApplicationFiled: February 4, 2008Publication date: June 19, 2008Applicant: OXENO OLEFINCHEMIE GMBHInventors: Michael Grass, Alfred Kaizik, Wilfried Buschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
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Patent number: 7361714Abstract: 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 suitable for this purpose.Type: GrantFiled: April 26, 2003Date of Patent: April 22, 2008Assignee: OXENO Olefinchemie GmbHInventors: Michael Grass, Alfred Kaizik, Wilfried Bueschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
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Patent number: 7354883Abstract: 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 (Y2O3), zirconium dioxide (ZrO2) and an alkali metal oxide and/or alkaline earth metal oxide.Type: GrantFiled: October 21, 2004Date of Patent: April 8, 2008Assignee: OXENO Olefinchemie GmbHInventors: Alfred Kaizik, Dietrich Maschmeyer, Klaus-Diether Wiese, Wilfried Bueschken, Kurt-Alfred Gaudschun
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Publication number: 20080058573Abstract: A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum oxide; and 0.1 to 99% by mass of silicon dioxide, is prepared by a) treating an aluminosilicate with an aqueous alkali metal salt solution, an alkaline earth metal salt solution and mixtures thereof, under acidic conditions, to obtain a treated aluminosilicate; and b) calcining the treated aluminosilicate, to obtain the catalyst.Type: ApplicationFiled: August 10, 2007Publication date: March 6, 2008Applicant: OXENO OLEFINCHEMIE GMBHInventors: Horst-Werner Zanthoff, Dietrich Maschmeyer, Thomas Quandt, Franz Nierlich, Silvia Santiago Fernandez, Stephan Houbrechts, Georg Skillas, Kurt-Alfred Gaudschun
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Publication number: 20070043245Abstract: 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 (Y2O3), zirconium dioxide (ZrO2) and an alkali metal oxide and/or alkaline earth metal oxide.Type: ApplicationFiled: October 21, 2004Publication date: February 22, 2007Applicant: Oxeno Olefinchemie GMBHInventors: Alfred Kaizik, Dietrich Maschmeyer, Klaus-Diether Wiese, Wilfried Buschken, Kurt-Alfred Gaudschun
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Publication number: 20060183936Abstract: 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 suitable for this purpose.Type: ApplicationFiled: April 26, 2003Publication date: August 17, 2006Applicant: Oxeno Olefinchemie GMBHInventors: Michael Grass, Alfred Kaizik, Wilfried Buschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
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Publication number: 20060041167Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefor.Type: ApplicationFiled: June 7, 2003Publication date: February 23, 2006Inventors: Michael Grass, Alfred Kaizik, Wilfried Buschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien