Patents by Inventor Uwe Dietrich Kühner
Uwe Dietrich Kühner 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: 9388314Abstract: Surface-modified silicon dioxide particles or silica sol preparable by reacting aqueous silica sol with at least one first modifier comprising at least one alkoxysilane and with at least one second modifier selected from the group consisting of halosilane, siloxane, and mixtures thereof, with water being removed before the reaction with the first or second modifier.Type: GrantFiled: April 20, 2009Date of Patent: July 12, 2016Assignee: EVONIK HANSE GMBHInventor: Uwe Dietrich Kuehner
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Patent number: 9243130Abstract: The invention relates to metal oxide or semimetal oxide nanoparticles having an average particle size of from 2 to 250 nm, characterized in that the nanoparticles have at least two different, free-radically polymerizable groups on the surface. The invention further relates to nanocomposites produced from such nanoparticles and also processes for producing them.Type: GrantFiled: April 20, 2009Date of Patent: January 26, 2016Assignee: Evonik Nanoresins GmbHInventors: Klaus Langerbeins, Uwe Dietrich Kühner, Werner Siol
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Patent number: 8765889Abstract: The invention relates to a method for producing hybrid-particles containing polymer and SiO2-particles, wherein a) in a first polymerization step in aqueous medium a water-insoluble phase containing one or more monomeric and colloidal SiO2-particles having an average particle diameter of 1 to 150 nm are polymerized, and b) in a second polymerization step in aqueous medium one or more monomers are polymerized in the presence of the polymer obtained in the first polymerization step.Type: GrantFiled: October 18, 2010Date of Patent: July 1, 2014Assignee: Evonik Nanoresins GmbHInventors: Werner Siol, Klaus Langerbeins, Uwe Dietrich Kühner
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Patent number: 8507595Abstract: The invention relates to a composition containing at least one plasticizer and silicon dioxide particles having an average particle size of 150 nm or less. According to the invention, the proportion of silicon dioxide particles is from 10 to 80% by weight and the proportion of plasticizer is from 90 to 20% by weight, where the sum of the proportions of silicon dioxide particles and of the plasticizer is at least 80% by weight. The invention makes it possible to mix nanoparticles into any polymeric materials in a simple way.Type: GrantFiled: May 29, 2008Date of Patent: August 13, 2013Assignee: Nanoresins AGInventor: Uwe Dietrich Kühner
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Patent number: 8470945Abstract: The invention provides a polymerizable composition which comprises: a) acrylates and/or methacrylates, b) 0.05% to 70% by weight of SiO2 particles having an average particle size of 1 to 30 nm which have polymerizable groups of the methacryloyl, acryloyl, styryl, itaconyl, crotonyl, vinyl, allyl and/or alkenyl type on the surface and are present in dispersion in the acrylates and/or methacrylates, at least 50% of the SiO2 particles consisting of individual, unaggregated or unagglomerated primary particles, c) not more than 2% by weight of crosslinker molecules.Type: GrantFiled: April 20, 2009Date of Patent: June 25, 2013Assignee: Nanoresins AGInventors: Klaus Langerbeins, Uwe Dietrich Kühner, Werner Siol
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Patent number: 8466245Abstract: The invention relates to a polymerizable composition containing: a) acrylates and/or methacrylates which have a glass transition temperature Tg of 0° C. or less, b) from 0.5 to 70% by weight of SiO2 particles which have an average particle size of from 1 to 150 nm and have polymerizable groups on the surface and are present in dispersed form in the acrylates and/or methacrylates, with at least 50% of the SiO2 particles being individual unaggregated or unagglomerated primary particles, where the composition contains not more than 2% by weight of crosslinker molecules.Type: GrantFiled: April 20, 2009Date of Patent: June 18, 2013Assignee: Nanoresins AGInventors: Klaus Langerbeins, Uwe Dietrich Kühner, Werner Siol
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Publication number: 20130046050Abstract: Subject of the invention is a hybrid particle comprising at least two vinyl polymers (vinyl polymers A and B), wherein vinyl polymer A comprises colloidal SiO2 particles with an average particle size from 1 to 150 nm and vinyl polymer B is capable of crosslinking hybrid particles to one another.Type: ApplicationFiled: October 18, 2010Publication date: February 21, 2013Applicant: Evonik Nanoresins GmbH.Inventors: Werner Siol, Klaus Langerbeins, Uwe Dietrich Kühner
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Publication number: 20120322943Abstract: The invention relates to a method for producing hybrid-particles containing polymer and SiO2-particles, wherein a) in a first polymerization step in aqueous medium a water-insoluble phase containing one or more monomeric and colloidal SiO2-particles having an average particle diameter of 1 to 150 nm are polymerized, and b) in a second polymerization step in aqueous medium one or more monomers are polymerized in the presence of the polymer obtained in the first polymerization step.Type: ApplicationFiled: October 18, 2010Publication date: December 20, 2012Applicant: EVONIK NANORESINS GMBHInventors: Werner Siol, Klaus Langerbeins, Uwe Dietrich Kühner
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Patent number: 8211995Abstract: The subject matter of the invention is a method for the removal of alkaline or acidic compounds from a solvent-containing metal oxide dispersion, having the following steps: a. conversion of the solvent into gas phase; b. condensation of the solvent; c. bringing the condensed solvent into contact with a neutralizing agent; d. Return of the condensed solvent into the metal oxide dispersion.Type: GrantFiled: June 2, 2008Date of Patent: July 3, 2012Assignee: Nanoresins AGInventors: Uwe Dietrich Kühner, Onno Graalmann
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Publication number: 20110112251Abstract: The invention relates to a polymerizable composition containing: a) acrylates and/or methacrylates which have a glass transition temperature Tg of 0° C. or less, b) from 0.5 to 70% by weight of SiO2 particles which have an average particle size of from 1 to 150 nm and have polymerizable groups on the surface and are present in dispersed form in the acrylates and/or methacrylates, with at least 50% of the SiO2 particles being individual unaggregated or unagglomerated primary particles, where the composition contains not more than 2% by weight of crosslinker molecules.Type: ApplicationFiled: April 20, 2009Publication date: May 12, 2011Applicant: NANORESINS AGInventors: Klaus Langerbeins, Uwe Dietrich Kühner, Werner Siol
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Publication number: 20110046331Abstract: The invention provides a polymerizable composition which comprises: a) acrylates and/or methacrylates, b) 0.05% to 70% by weight of SiO2 particles having an average particle size of 1 to 30 nm which have polymerizable groups of the methacryloyl, acryloyl, styryl, itaconyl, crotonyl, vinyl, allyl and/or alkenyl type on the surface and are present in dispersion in the acrylates and/or methacrylates, at least 50% of the SiO2 particles consisting of individual, unaggregated or unagglomerated primary particles, c) not more than 2% by weight of crosslinker molecules.Type: ApplicationFiled: April 20, 2009Publication date: February 24, 2011Applicant: NANORESINS AGInventors: Klaus Langerbeins, Uwe Dietrich Kühner, Werner Siol
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Publication number: 20110039983Abstract: Surface-modified silicon dioxide particles or silica sol preparable by reacting aqueous silica sol with at least one first modifier comprising at least one alkoxysilane and with at least one second modifier selected from the group consisting of halosilane, siloxane, and mixtures thereof, with water being removed before the reaction with the first or second modifier.Type: ApplicationFiled: April 20, 2009Publication date: February 17, 2011Applicant: nanoresins AGInventor: Uwe Dietrich Kuehner
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Publication number: 20110040031Abstract: The invention relates to metal oxide or semimetal oxide nanoparticles having an average particle size of from 2 to 250 nm, characterized in that the nanoparticles have at least two different, free-radically polymerizable groups on the surface. The invention further relates to nanocomposites produced from such nanoparticles and also processes for producing them.Type: ApplicationFiled: April 20, 2009Publication date: February 17, 2011Applicant: NANORESINS AGInventors: Klaus Langerbeins, Uwe Dietrich Kühner, Werner Siol
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Publication number: 20100280168Abstract: The invention relates to a composition containing at least one plasticizer and silicon dioxide particles having an average particle size of 150 nm or less. According to the invention, the proportion of silicon dioxide particles is from 10 to 80% by weight and the proportion of plasticizer is from 90 to 20% by weight, where the sum of the proportions of silicon dioxide particles and of the plasticizer is at least 80% by weight. The invention makes it possible to mix nanoparticles into any polymeric materials in a simple way.Type: ApplicationFiled: May 29, 2008Publication date: November 4, 2010Applicant: NANORESINS AGInventor: Uwe Dietrich Kühner
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Publication number: 20100233060Abstract: The object of the invention is a method for the production of a nano-scale silicon dioxide, said method comprising the following steps: a) provision of an aqueous suspension of a colloidal silicon dioxide with an average particle size of 1 to 500 nm; b) allowing said suspension to react with an organosilane or organosiloxane in an aprotic cyclic ether and silanization of the colloidal silicon dioxide; c) separation of the aqueous phase of the reaction mixture from the organic phase; d) allowing the organic phase to react again with an organosilane or organosiloxane in an aprotic cyclic ether and silanization of the colloidal silicon dioxide; e) separation of the aqueous phase of the reaction mixture from the organic phase.Type: ApplicationFiled: June 10, 2008Publication date: September 16, 2010Applicant: NANORESINS AGInventors: Uwe Dietrich Kühner, Robert Wieczorreck, Onno Graalmann, Christof Roscher
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Publication number: 20100197854Abstract: The subject matter of the invention is a method for the removal of alkaline or acidic compounds from a solvent-containing metal oxide dispersion, having the following steps: a. conversion of the solvent into gas phase; b. condensation of the solvent; c. bringing the condensed solvent into contact with a neutralizing agent; d. Return of the condensed solvent into the metal oxide dispersion.Type: ApplicationFiled: June 2, 2008Publication date: August 5, 2010Applicant: NANORESINS AGInventors: Uwe Dietrich Kuehner, Onno Graalmann