Patents by Inventor Bettina GERHARZ-KALTE

Bettina GERHARZ-KALTE 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).

  • Patent number: 12030810
    Abstract: The present invention relates to a thermal insulating composition, containing 5 to 60% by weight of a hydrophobized granular material comprising fumed silica and at least one IR-opacifier, and 40 to 95% by weight of an inorganic and/or an organic binder, whereby the hydrophobized granular material has a content of free hydroxyl groups of no greater than 0.12 mmol/g, as determined by the reaction with lithium aluminium hydride.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: July 9, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Matthias Geisler, Maria Nargiello, Bettina Gerharz-Kalte, Björn Lazar, Uwe Numrich, Ulrich Boes, Bob Tse-Weng Lin, Craig Biesiada
  • Publication number: 20240158649
    Abstract: A curable composition for production of coatings for thermal, electrical and/or acoustic insulation, where the composition has at least one aqueous binder can be made. The composition has a first component based on spray-dried fumed silica pellets. The composition also has at least one second component selected from the group of the silicon dioxides, preferably microsilica, pellets based on pyrogenically produced silicon dioxide, silica aerogels, silicate glass (foamed glass/expanded glass), hollow silicon dioxide particles (hollow glass beads), or pellets selected from perlites, preferably expanded perlites, vermiculites, polymers, preferably expanded polystyrene pellets, and mixtures thereof.
    Type: Application
    Filed: November 14, 2023
    Publication date: May 16, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Björn Lazar, Bettina Gerharz-Kalte, Sara Liebana Viñas, Alexander Lygin
  • Patent number: 11958981
    Abstract: Hydrophobized granular material comprising from 30 to 95% by weight of a pyrogenic mixed oxide based on silica and at least one oxide of metal M selected from of Al, Ti and Fe with the content of metal M oxide in the mixed oxide being from 01 to 10% by weight, and from 5 to 70% by weight of at least one IR-opacifier selected from the group consisting of silicon carbide, zirconium dioxide, ilmenites, iron titanates, zirconium silicates, manganese oxides, graphites, carbon blacks and mixtures thereof.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: April 16, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Uwe Numrich, Christian Moers, Bettina Gerharz-Kalte, Björn Lazar, Matthias Geisler
  • Publication number: 20230110025
    Abstract: The present invention relates to a process for producing silica-based thermal insulation moulded body comprising at least 50% by weight of synthetic amorphous silica and not more than 50% by weight of natural silica with a specified particle size, thermal insulation moulded body obtainable by this process and the use thereof for thermal and/or acoustic insulation.
    Type: Application
    Filed: February 15, 2021
    Publication date: April 13, 2023
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Gabriele Gärtner, Vanessa KIMMEL, Bettina GERHARZ-KALTE, Alexander LYGIN
  • Publication number: 20230062574
    Abstract: Fumed silica powder, surface treated with a surface treatment agent selected from the group consisting of organosilanes, silazanes, acyclic polysiloxanes, cyclic polysiloxanes, and mixtures thereof, wherein the powder has: a) a number of silanol groups relative to BET surface area dSiOH of at least 0.85 SiOH/nm2, as determined by reaction with lithium aluminium hydride; b) a methanol wettability of more than 40% by volume of methanol in methanol-water mixture; c) a tamped density of not more than 200 g/L.
    Type: Application
    Filed: January 7, 2021
    Publication date: March 2, 2023
    Inventors: Frank MENZEL, Björn LAZAR, Bettina GERHARZ-KALTE, Alexander LYGIN, Mareike GIESSELER, Rainer GOLCHERT, Nina MÜHLIG, Wolfgang AUL, Tobias RENGER
  • Publication number: 20230002627
    Abstract: Silica-based hydrophobic granular material with an increased polarity Silica-based granular material, comprising silica and at least one IR-opacifier, hydrophobized with a surface treatment agent comprising a silicon atom, wherein the granular material has: a) a cumulative pore volume of pores>4 nm of more than 2.5 cm3/g, as determined by the mercury intrusion method according to DIN ISO 15901-1; b) a tamped density of 140 g/L to 290 g/L; c) a number of silanol groups relative to BET surface area dSiOH of at least 0.5 SiOH/nm2, as determined by reaction with lithium aluminium hydride. d) a number of silicon atoms in the surface treatment agent relative to BET surface area d[Si] of at least 1.0 [Si atoms]/nm2.
    Type: Application
    Filed: January 6, 2021
    Publication date: January 5, 2023
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Björn LAZAR, Alexander LYGIN, Ulrich BOES, Bettina GERHARZ-KALTE, Remi BRIAND, Maria NARGIELLO
  • Publication number: 20210292233
    Abstract: Hydrophobized granular material comprising from 30 to 95% by weight of a pyrogenic mixed oxide based on silica and at least one oxide of metal M selected from of Al, Ti and Fe with the content of metal M oxide in the mixed oxide being from 01 to 10% by weight, and from 5 to 70% by weight of at least one IR-opacifier selected from the group consisting of silicon carbide, zirconium dioxide, ilmenites, iron titanates, zirconium silicates, manganese oxides, graphites, carbon blacks and mixtures thereof.
    Type: Application
    Filed: July 9, 2019
    Publication date: September 23, 2021
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Uwe NUMRICH, Christian MOERS, Bettina GERHARZ-KALTE, Björn LAZAR, Matthias GEISLER
  • Publication number: 20210269359
    Abstract: The present invention relates to a thermal insulating composition, containing 5 to 60% by weight of a hydrophobized granular material comprising fumed silica and at least one IR-opacifier, and 40 to 95% by weight of an inorganic and/or an organic binder, whereby the hydrophobized granular material has a content of free hydroxyl groups of no greater than 0.12 mmol/g, as determined by the reaction with lithium aluminium hydride.
    Type: Application
    Filed: July 8, 2019
    Publication date: September 2, 2021
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Matthias GEISLER, Maria NARGIELLO, Bettina GERHARZ-KALTE, Björn LAZAR, Uwe NUMRICH, Ulrich BOES, Bob Tse-Weng LIN, Craig BIESIADA