Patents by Inventor Joern Duwenhorst
Joern Duwenhorst 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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Publication number: 20210395431Abstract: Described herein is a process for producing polyurethane foams having a density of 30 g/dm3 to 70 g/dm3, in which (a) aromatic polyisocyanate is mixed with (b) polymeric compounds having isocyanate-reactive groups, (c) optionally chain extender and/or crosslinking agent, (d) catalyst, (e) blowing agent including water, (f) 0.1% to 5% by weight of lactam, and (g) optionally additives, at an isocyanate index of 50 to 95 to form a reaction mixture, and the reaction mixture is converted to the polyurethane foam, wherein the catalyst includes metal catalyst and amine catalyst, and the amine catalyst has tertiary nitrogen atoms and the content of tertiary nitrogen atoms in the amine catalyst is from 0.0001 to 0.003 mol/100 g of foam. Also described herein is a polyurethane foam and a method of using such a flexible polyurethane foam for the production of cushions, seat cushions, or mattresses.Type: ApplicationFiled: October 23, 2019Publication date: December 23, 2021Inventors: Markus Schuette, Heinz-Dieter Lutter, Manuela Faehmel, Marc Claude Martin, Peter Deglmann, Joern Duwenhorst
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Patent number: 9181382Abstract: The invention provides a thermoplastic polyurethane with at least one plasticizer, where at least one first plasticizer (i) is based on glycerol, and at least one hydroxy group of the glycerol has been esterified with a monocarboxylic acid (ii) which comprises 1, 2, 3, 4, 5, or 6 carbon atoms, more preferably 2, 3, or 4 carbon atoms, and very particularly preferably 2 carbon atoms. The invention further comprises a process for producing the thermoplastic polyurethane with the plasticizer (i), a process for coating products with said thermoplastic polyurethane, the use of the thermoplastic polyurethane, and also the use of plasticizers based on glycerol for thermoplastic polyurethane.Type: GrantFiled: May 6, 2011Date of Patent: November 10, 2015Assignee: BASF SEInventors: Frank Prissok, Jörn Duwenhorst, Andre Kamm
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Patent number: 9097835Abstract: The invention relates to thermoplastic polyurethanes (hereinafter TPUs) suitable for the production of optical conductors, to a process for their production, and also to optical conductors based on TPUs.Type: GrantFiled: December 16, 2009Date of Patent: August 4, 2015Assignee: BASF SEInventors: Frank Prissok, Joern Duwenhorst, Oliver Steffen Henze, Oliver Muehren
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Patent number: 8940814Abstract: Dispersion comprising functionalized metal oxide particles, polymerizable compounds and if appropriate a solvent and their use for stabilizing polymers.Type: GrantFiled: December 9, 2009Date of Patent: January 27, 2015Assignee: BASF SEInventors: Andrey Karpov, Hartmut Hibst, Berend Eling, Joern Duwenhorst, Richard Riggs, Alexander Traut, Christof Kujat, Cornelia Roeger, Christian Krausche
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Patent number: 8927613Abstract: The present invention relates to cellular polyisocyanate polyaddition products whose density to DIN EN ISO 845 is from 200 to 800 kg/m3, and also to prepolymer composed of at least one diisocyanate (a) and of at least one polyether alcohol (b), where the at least one polyether alcohol (b) comprises the following components: (b1) aliphatic polyether alcohols whose number-average molar mass is from 300 to 1000 g/mol, (b2) aliphatic polyether alcohols whose number-average molar mass is from 2000 to 10 000 g/mol, and (b3) aliphatic polyether alcohols whose number-average molar mass is from 10 000 to 100 000 g/mol, to a process for its production, to a cellular polyisocyanate polyaddition product thus produced, and to its use as damping elements in vehicle construction.Type: GrantFiled: July 14, 2009Date of Patent: January 6, 2015Assignee: BASF SEInventors: Frank Prissok, Joern Duwenhorst, Michael Harms, Sven Lasai
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Patent number: 8318868Abstract: Thermoplastic polyurethane (i) comprising from 20% by weight to 70% by weight of isocyanate dissolved in the thermoplastic polyurethane, based on the total weight of the thermoplastic polyurethane (i) comprising the isocyanates.Type: GrantFiled: April 22, 2011Date of Patent: November 27, 2012Assignee: BASF AktiengesellschaftInventors: Oliver Steffen Henze, Rolf Steinberger, Ruediger Krech, Norbert Pohlmann, Christian Beckmann, Joern Duwenhorst
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Publication number: 20120258269Abstract: A process for preparing a polyester polyol comprises the steps of: (a) preparing a reaction mixture comprising the following components: A: at least one carboxylic acid recovered from natural raw materials and having at least two acid groups, B: at least one polyhydric alcohol, C: at least one organic phosphite compound, D: at least one Lewis acid; (b) heating the reaction mixture to a temperature of at least 160° C. and removing the water formed in the course of the reaction; (c) heating the reaction mixture to a temperature of at least 210° C. under a pressure below 1013 mbar for a period of time in the range from 0.1 to 25 hours.Type: ApplicationFiled: December 15, 2010Publication date: October 11, 2012Applicant: BASF SEInventors: Lionel Gehringer, Joern Duwenhorst, Fin Lammers, Axel Wilms
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Patent number: 8282851Abstract: The invention relates to a cellular elastomer which is anisotropic, with anisotropy being defined by the compressive modulus in one of three orthogonal directions being greater than that in the other two directions by a factor of at least 1.5. The invention also relates to a cellular elastomer containing magnetizable particles which have a chain-like alignment along one spatial direction. The invention also relates to a process for producing a cellular elastomer containing magnetiable particles and the use of such elastomers in articles of manufacture.Type: GrantFiled: December 11, 2007Date of Patent: October 9, 2012Assignee: BASF SEInventors: Joern Duwenhorst, Maximilian Ruellmann, Frank Prissok, Sven Lasai, Steffen Mayer, Michael Harms, Claus Gabriel
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Patent number: 8138299Abstract: Thermoplastic polyurethanes which have a hardness of from 50 Shore A to 80 Shore A and are based on (b) polyester diols, wherein a polyester diol (b1) based on butane-1,4-diol and at least one further diol having at least 5 carbon atoms and a polyester diol (b2) based on butane-1,4-diol and at least one further diol having two or three carbon atoms are present as (b) polyester diols.Type: GrantFiled: April 25, 2006Date of Patent: March 20, 2012Assignee: BASF AktiengesellschaftInventors: Jörn Duwenhorst, Hauke Malz, Karin Scheffer, Thomas Flug, Martin Vallo
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Publication number: 20110275779Abstract: The invention relates to thermoplastic polyurethanes (hereinafter TPUs) suitable for the production of optical conductors, to a process for their production, and also to optical conductors based on TPUs.Type: ApplicationFiled: December 16, 2009Publication date: November 10, 2011Applicant: BASF SEInventors: Frank Prissok, Joern Duwenhorst, Oliver Steffen Henze, Oliver Muehren
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Publication number: 20110275733Abstract: The invention provides a thermoplastic polyurethane with at least one plasticizer, where at least one first plasticizer (i) is based on glycerol, and at least one hydroxy group of the glycerol has been esterified with a monocarboxylic acid (ii) which comprises 1, 2, 3, 4, 5, or 6 carbon atoms, more preferably 2, 3, or 4 carbon atoms, and very particularly preferably 2 carbon atoms. The invention further comprises a process for producing the thermoplastic polyurethane with the plasticizer (i), a process for coating products with said thermoplastic polyurethane, the use of the thermoplastic polyurethane, and also the use of plasticizers based on glycerol for thermoplastic polyurethane.Type: ApplicationFiled: May 6, 2011Publication date: November 10, 2011Applicant: BASF SEInventors: Frank Prissok, Jörn Duwenhorst, Andre Kamm
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Publication number: 20110245392Abstract: Improved metal oxide nanoparticles, in particular zinc oxides, are modified with silanes. The particles obtained in this way are suitable for an improved UV protection of polymers.Type: ApplicationFiled: December 3, 2009Publication date: October 6, 2011Applicant: BASF SEInventors: Andrey Karpov, Hartmut Hibst, Berend Eling, Jörn Duwenhorst, Richard Riggs, Alexander Traut, Christof Kujat, Cornelia Röger, Christian Krausche
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Publication number: 20110245391Abstract: Dispersion comprising functionalized metal oxide particles, polymerizable compounds and if appropriate a solvent and their use for stabilizing polymers.Type: ApplicationFiled: December 9, 2009Publication date: October 6, 2011Applicant: BASF SEInventors: Andrey Karpov, Hartmut Hibst, Berend Eling, Joern Duwenhorst, Richard Riggs, Alexander Traut, Christof Kujat, Cornelia Roeger, Christian Krausche
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Publication number: 20110193256Abstract: Thermoplastic polyurethane (i) comprising from 20% by weight to 70% by weight of isocyanate dissolved in the thermoplastic polyurethane, based on the total weight of the thermoplastic polyurethane (i) comprising the isocyanates.Type: ApplicationFiled: April 22, 2011Publication date: August 11, 2011Applicant: BASF AktiengesellschaftInventors: Oliver Steffen Henze, Rolf Steinberger, Rüdiger Krech, Norbert Pohlmann, Christian Beckmann, Jörn Duwenhorst
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Publication number: 20110166316Abstract: Polyurethanes are based on a polyester diol formed from a dicarboxylic acid having an even number of carbon atoms and a diol having an odd number of carbon atoms.Type: ApplicationFiled: September 16, 2009Publication date: July 7, 2011Applicant: BASF SEInventors: Joern Duwenhorst, Frank Prissok, Lionel Gehringer
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Publication number: 20110118373Abstract: The present invention relates to cellular polyisocyanate polyaddition products whose density to DIN EN ISO 845 is from 200 to 800 kg/m3, and also to prepolymer composed of at least one diisocyanate (a) and of at least one polyether alcohol (b), where the at least one polyether alcohol (b) comprises the following components: (b1) aliphatic polyether alcohols whose number-average molar mass is from 300 to 1000 g/mol, (b2) aliphatic polyether alcohols whose number-average molar mass is from 2000 to 10 000 g/mol, and (b3) aliphatic polyether alcohols whose number-average molar mass is from 10 000 to 100 000 g/mol, to a process for its production, to a cellular polyisocyanate polyaddition product thus produced, and to its use as damping elements in vehicle construction.Type: ApplicationFiled: July 14, 2009Publication date: May 19, 2011Applicant: BASF SEInventors: Frank Prissok, Joern Duwenhorst, Michael Harms, Sven Lasai
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Publication number: 20100038579Abstract: Cellular elastomer which is anisotropic, with anisotropy being defined by the compressive modulus in one of three orthogonal directions being greater than that in the other two directions by a factor of at least 1.5.Type: ApplicationFiled: December 11, 2007Publication date: February 18, 2010Applicant: BASF SEInventors: Joern Duwenhorst, Maximilian Ruellmann, Frank Prissok, Sven Lasai, Steffen Mayer, Michael Harms, Claus Gabriel
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Publication number: 20100015676Abstract: The invention relates to a process for preparing polyesterols from at least one base polyesterol and at least one further reagent, wherein (a) the at least one base polyesterol and the at least one further reagent are mixed, (b) the mixture produced in (a) flows through a reactor in which at least one packing comprising at least one immobilized enzyme on a support is present, with the at least one base polyesterol and the at least one further reagent being reacted to form the polyesterol.Type: ApplicationFiled: August 29, 2007Publication date: January 21, 2010Applicant: BASF SEInventors: Mirko Kreitschmann, Maxium Peretolchin, Lionel Gehringer, Jean-Francois Stumbe, Dietmar Haering, Ulrike Mahn, Joern Duwenhorst