Patents by Inventor Helmut Mangold
Helmut Mangold 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: 8911638Abstract: Stable, pourable silicon dioxide dispersion, in which the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, and which comprises at least 35 wt. % of a silicon dioxide powder, 3 to 35 wt. % of at least one polyol, 20 to 60 wt. % of water, 0 to 10 wt. % of an additive and a substance having an alkaline action in an amount such that a pH of 10<pH<12 is established. It can be prepared by a procedure in which silicon dioxide powder is introduced into water and a polyol in a rotor/stator machine, the pH being less than 5, and the mixture is dispersed until the current uptake of the rotor/stator machine is largely constant, and a substance having an alkaline action is subsequently added in an amount such that a pH of the dispersion of 10<pH<12 results, the substance having an alkaline reaction being added so rapidly that no gel formation takes place.Type: GrantFiled: June 16, 2005Date of Patent: December 16, 2014Assignee: Degussa AGInventors: Wolfgang Lortz, Christoph Batz-Sohn, Helmut Mangold, Gabriele Perlet, Werner Will, Sascha Reitz
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Patent number: 8337794Abstract: Silicone rubber containing a fumed silica doped with potassium by means of aerosol.Type: GrantFiled: December 1, 2008Date of Patent: December 25, 2012Assignee: Evonik Degussa GmbHInventors: Mario Scholz, Helmut Mangold
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Patent number: 7897256Abstract: Surface-modified, doped, pyrogenically produced oxides surface-modified with one or several compounds from the following groups: a) Organosilanes of the type (RO)3Si(CnH2n+1), (RO)3Si(CnH2n?1) b) R?x(RO)ySi(CnH2n+1), (RO)3Si(CnH2n+1) c) X3Si(CnH2n+1), X3Si(CnH2n?1) d) X2(R?)Si(CnH2n+1), X2(R?)Si(CnH2n?1) e) X(R?)2Si(CnH2n+1), X(R?)2Si(CnH2n?1) f) (RO)3Si(CH2)m—R?, g) (R?)x(RO)ySi(CH2)m—R?, h) X3Si(CH2)m—R?, i) (R)X2Si(CH2)m—R?, j) (R)2XSi(CH2)m—R?, k) Silazanes of the type l) Cyclic polysiloxanes, m) Polysiloxanes or silicone oils.Type: GrantFiled: February 28, 2002Date of Patent: March 1, 2011Assignee: Evonik Degussa GmbHInventors: Dieter Kerner, Helmut Mangold, Jürgen Meyer
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Patent number: 7862797Abstract: Alkali metal oxide-metal oxide mixed oxide powder in the form of aggregates of pore-free primary particles, comprising from 0.005 to 5% by weight of at least one alkali metal oxide, which has a BET surface area of from 100 to 350 m2/g, has a specific DBP number, expressed as DBP number per square meter of specific surface area, greater than or equal to that of a powder which has only the metal oxide component, has the alkali metal oxide distributed in the core and on the surface of the primary particles. Silicone rubber comprising the alkali metal oxide-metal oxide mixed oxide powder.Type: GrantFiled: May 23, 2006Date of Patent: January 4, 2011Assignee: EVONIK DEGUSSA GmbHInventors: Kai Schumacher, Helmut Roth, Rainer Golchert, Helmut Mangold, Mario Scholz
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Publication number: 20100308287Abstract: Stable, pourable silicon dioxide dispersion, in which the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, and which comprises at least 35 wt. % of a silicon dioxide powder, 3 to 35 wt. % of at least one polyol, 20 to 60 wt. % of water, 0 to 10 wt. % of an additive and a substance having an alkaline action in an amount such that a pH of 10<pH?12 is established. It can be prepared by a procedure in which silicon dioxide powder is introduced into water and a polyol in a rotor/stator machine, the pH being less than 5, and the mixture is dispersed until the current uptake of the rotor/stator machine is largely constant, and a substance having an alkaline action is subsequently added in an amount such that a pH of the dispersion of 10<pH?12 results, the substance having an alkaline reaction being added so rapidly that no gel formation takes place.Type: ApplicationFiled: August 20, 2010Publication date: December 9, 2010Applicant: EVONIK DEGUSSA GmbHInventors: Wolfgang Lortz, Christoph Batz-Sohn, Helmut Mangold, Gabriele Perlet, Werner Will, Sascha Reitz
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Publication number: 20100301264Abstract: A method for producing potassium-doped pyrogenic oxides involves mixing a gaseous mixture including a pyrogenic oxide precursor and an aqueous aerosol containing a potassium salt to form an aerosol-gaseous mixture which is then reacted in a flame under conditions suitable for producing pyrogenic oxides by flame oxidation or flame hydrolysis to form the potassium-doped pyrogenic oxides product. The particle product is spherical, has a BET surface between 1 and 1000 m2/g and a narrow distribution of particle size of at least 0.7. The doped oxides can be used as polishing material (CMP application).Type: ApplicationFiled: August 16, 2010Publication date: December 2, 2010Applicant: Evonik Degussa GmbHInventors: Helmut MANGOLD, Wolfgang LORTZ, Rainer GOLCHERT, Helmut ROTH
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Publication number: 20100209339Abstract: Pyrogenic silicon-titanium mixed oxide powder having • a BET surface area of 200 to 400 m2/g, • a DBP number/BET surface area ratio of 0.5 to 1.2, • a silicon dioxide content of 93.5 to 95.4% by weight and a titanium dioxide content of 4.6 to 6.5% by weight, where the sum of the contents is greater than 99.7% by weight. Dispersion comprising the pyrogenic silicon-titanium mixed oxide powder. Process for preparing a titanium-containing zeolite proceeding from powder or dispersion.Type: ApplicationFiled: September 25, 2008Publication date: August 19, 2010Applicant: Evonik DegussaInventors: Kai Schumacher, Martin Moerters, Helmut Mangold, Steffen Hasenzahl
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Patent number: 7722849Abstract: Pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm. It is prepared by mixing at least one silicon compound in vapor form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalized rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler.Type: GrantFiled: December 16, 2003Date of Patent: May 25, 2010Assignee: Evonik Degussa GmbHInventors: Martin Moerters, Helmut Mangold, Monika Oswald, Kai Schumacher, Heinz Lach, Gerrit Schneider
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Publication number: 20090301345Abstract: Pyrogenically produced silicon dioxide doped with aluminum oxide by means of an aerosol is produced by introducing an aqueous aerosol of an aluminum salt into the flame of a pyrogenic silica producing flame hydrolysis method or a flame oxidation method. The silicon dioxide doped with Al2O3 by means of an aerosol may inter alia be used in the production of inkjet paper or inkjet films.Type: ApplicationFiled: May 26, 2009Publication date: December 10, 2009Inventors: Helmut Mangold, Mitsuru Ochiai, Holger Glaum, Astrid Muller
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Publication number: 20090261309Abstract: Stable, pourable silicon dioxide dispersion, in which the average, number-related aggregate diameter of the silicon dioxide particles in dispersion is less than 200 nm, and which comprises at least 35 wt. % of a silicon dioxide powder, 3 to 35 wt. % of at least one polyol, 20 to 60 wt. % of water, 0 to 10 wt. % of an additive and a substance having an alkaline action in an amount such that a pH of 10<pH<12 is established. It can be prepared by a procedure in which silicon dioxide powder is introduced into water and a polyol in a rotor/stator machine, the pH being less than 5, and the mixture is dispersed until the current uptake of the rotor/stator machine is largely constant, and a substance having an alkaline action is subsequently added in an amount such that a pH of the dispersion of 10<pH<12 results, the substance having an alkaline reaction being added so rapidly that no gel formation takes place.Type: ApplicationFiled: June 16, 2005Publication date: October 22, 2009Applicant: DEGUSSA AGInventors: Wolfgang Lortz, Christoph Batz-Sohn, Helmut Mangold, Gabriele Perlet, Werner Will, Sascha Reitz
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Publication number: 20090176922Abstract: Silicone rubber containing a fumed silica doped with potassium by means of aerosol.Type: ApplicationFiled: December 1, 2008Publication date: July 9, 2009Applicant: DeGussa AGInventors: Mario Scholz, Helmut Mangold
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Publication number: 20090131694Abstract: Silicon-titanium mixed oxide powder, dispersion thereof and titanium-containing zeolite prepared therefrom Pyrogenic silicon-titanium mixed oxide powder, having a BET surface area of 200 to 400 m2/g, a silicon dioxide content of 97.0±1.5% by weight, a titanium dioxide content of 3.5±1.0% by weight, the sum of silicon dioxide content and titanium dioxide content being greater than 99.7% by weight. Dispersion comprising this powder. Process for the preparation of a titanium-containing zeolite starting from powder or dispersion.Type: ApplicationFiled: March 12, 2007Publication date: May 21, 2009Applicant: EVONIK DEGUSSA GmbHInventors: Kai Schumacher, Martin Moerters, Helmut Mangold, Steffen Hasenzahl
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Publication number: 20090035210Abstract: Carbon black with an OAN, measured on the beaded carbon black, of less than 120 ml/100 g. A process for the preparation of the carbon black is described, wherein a salt solution is converted into an aerosol and this is then introduced into the carbon black formation zone. The carbon black can be used in inks, paints, lacquers, printing inks and ink-jet inks, and for coloring plastics.Type: ApplicationFiled: October 15, 2008Publication date: February 5, 2009Inventors: Kai Krauss, Alfons Karl, Burkhard Freund, Udo Wieschnowsky, Helmut Mangold, Kai Schumacher, Rainer Golchert, Helmut Roth
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Publication number: 20080199392Abstract: Alkali metal oxide-metal oxide mixed oxide powder in the form of aggregates of pore-free primary particles, comprising from 0.005 to 5% by weight of at least one alkali metal oxide, which has a BET surface area of from 100 to 350 m/g, has a specific DBP number, expressed as DBP number per square metre of specific surface area, greater than or equal to that of a powder which has only the metal oxide component, has the alkali metal oxide distributed in the core and on the surface of the primary particles. Silicone rubber comprising the alkali metal oxide-metal oxide mixed oxide powder.Type: ApplicationFiled: May 23, 2006Publication date: August 21, 2008Applicant: Evonik Degussa GmgHInventors: Kai Schumacher, Helmut Roth, Rainer Golchert, Helmut Mangold, Mario Scholz
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Publication number: 20080139721Abstract: Surface-modified, doped, pyrogenically produced oxides surface-modified with one or several compounds from the following groups: a) Organosilanes of the type (RO)3Si(CnH2n+1), (RO)3Si(CnH2n?1) b) R?x(RO)ySi(CnH2n+1), (RO)3Si(CnH2n+1) c) X3Si(CnH2n+1), X3Si(CnH2n?1) d) X2(R?)Si(CnH2n+1), X2(R?)Si(CnH2n?1) e) X(R?)2Si(CnH2n+1), X(R?)2Si(CnH2n?1) f) (RO)3Si(CH2)m—R?, g) (R?)x(RO)ySi(CH2)m—R?, h) X3Si(CH2)m—R?, i) (R)X2Si(CH2)m—R?, j) (R)2XSi(CH2)m—R?, k) Silazanes of the type l) Cyclic polysiloxanes, m) Polysiloxanes or silicone oils.Type: ApplicationFiled: October 31, 2007Publication date: June 12, 2008Applicant: Degussa AGInventors: Dieter Kerner, Helmut Mangold, Jurgen Meyer
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Publication number: 20080045411Abstract: Pyrogenic silicon dioxde powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm, It is prepared by mixing at least one silicon compound in vapour form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalised rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler.Type: ApplicationFiled: December 16, 2003Publication date: February 21, 2008Applicant: Degussa AGInventors: Martin Morters, Helmut Mangold, Monika Oswald, Kai Schumacher, Heinz Lach, Gerrit Schneider
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Patent number: 7241336Abstract: Pyrogenically produced aluminum-silicon mixed oxides with a BET surface of more than 300 m2/g and a composition of 0.01 to 99.99% by wt. AI2O3, remainder SiO2 are produced in accordance with the method of flame pyrolysis or preferably flame hydrolysis by a joint combustion of the gaseous raw substances. They can be used to produce coating colors, especially for inkjet papers or inkjet foils or other inkjet materials.Type: GrantFiled: July 22, 2002Date of Patent: July 10, 2007Assignee: Degussa GmbHInventors: Thomas Scharfe, Ronald Apel, Alfons Moster, Helmut Mangold, Ralph Brandes
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Patent number: 7169322Abstract: Aqueous dispersion containing a silicon-aluminum mixed oxide powder, the powder containing 0.1 to 99.9 wt. % Al2O3 and Si—O—Al-bonds. The dispersion can be produced using dispersing and/or grinding devices which a achieve an energy input of at least 200 KJ/m3. The dispersion can be used for the chemical-mechanical polishing of semiconductor substrates.Type: GrantFiled: February 21, 2002Date of Patent: January 30, 2007Assignee: Degussa AGInventors: Frank Menzel, Wolfgang Lortz, Helmut Mangold
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Publication number: 20070015652Abstract: Sintered materials, especially sintered glasses, produced from pyrogenically produced silicon dioxide which has been processed to silicon granulates in a compacting step, and the use of such granulates in the production of formed glass bodies.Type: ApplicationFiled: September 1, 2006Publication date: January 18, 2007Inventors: Helmut Mangold, Jurgen Meyer, Gerrit Schneider
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Patent number: 7132157Abstract: A layer which is obtained by thermal treatment from an aqueous dispersion applied to a substrate, the dispersion containing silicon/titanium mixed oxide powder prepared by flame hydrolysis. It is prepared by applying a dispersion which contains the silicon/titanium mixed oxide powder to a substrate and then sintering by using a thermal treatment. It can be used, for example, on materials with very low coefficients of expansion.Type: GrantFiled: January 15, 2002Date of Patent: November 7, 2006Assignee: Degussa AGInventors: Monika Oswald, Helmut Mangold, Klaus Deller, Rolf Clasen, Markus Hornfeck