Patents by Inventor Gunnar Hoffmüller

Gunnar Hoffmüller 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: 11814484
    Abstract: Composition of comprising nano metal oxide/hydroxide particles and a polyorganosiloxane having increased refractive index, processes to cure these compositions for making transparent coats, shaped articles by an extrusion or molding process having a refractive index above the refractive index of the polyorganosiloxane. Use of the cured polyorganosiloxane compositions as optical devices, coats, lenses or light guides.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: November 14, 2023
    Inventors: Thorsten Felder, Monika Friedrichs, Gunnar Hoffmüller, Abirami Srikanth, Douglas Dukes, Sumi Dinkar, Roland Wagner, Karl Heinz Stachulla
  • Publication number: 20230122289
    Abstract: The present invention refers to silica particles functionalized with one or more silanes comprising a terminal group enabling a condensation reaction with the silica particles' surface, and at least one further terminal group for the modification of the silica particles' properties. The invention also relates to a process for the functionalization of silica particles by silanes, silanes as applied for the functionalization of the silica particles according to the invention, a process for the functionalization of silica by silanes, silica particles comprising a functional group, the use of the silica particles according to the invention, and coating compositions comprising the silica particles according to the invention.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 20, 2023
    Inventors: Thorsten FELDER, Gunnar HOFFMÜLLER, Anita WITOSSEK, Jörg-Walter HERMANN, Andreas HAEUSELER, Jan ENGELHARDT, Max CONRAD, Monika FRIEDRICHS
  • Patent number: 11535751
    Abstract: An asymmetrically substituted polyorganosiloxane comprising at least one or more siloxane blocks and different reactive groups at each end of the siloxane chain, e.g. an alkoxysilyl, alkenyl, epoxy, hydroxyaromatic or an ionic substituent. Each polyorganosiloxane block has substantially a monomodal chain length distribution and is suitable for the use as a surface modifying agent for organic or inorganic particles, as a surface active material, and/or as a compatibilizer in compositions having more two or more non-miscible phases.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: December 27, 2022
    Inventors: Gunnar Hoffmüller, Thorsten Felder, Roland Wagner, Philip Kensbock, Anita Witossek, Silvia Effert, Joerg-Walter Hermann, Siegfried Hossinger, Andreas Haeuseler
  • Patent number: 11370897
    Abstract: The present invention relates to curable compositions comprising at least one compound of the formula (1): wherein R is C1-C10 alkyl, and R1-R10 each are independently selected from the group consisting of hydrogen and C1-C10 alkyl, with the proviso that at least one of R1-R10 is alkyl, and wherein the substitution patterns formed by the residues R1-R5 and R6-R10 on each of the aromatic rings are different from each other, cured compositions obtained from such curable compositions, mixtures of compounds of the formula (I), the use of such compounds and mixtures of such compounds as a UV stabilizer in curable compositions, and a process for the manufacture of curable compositions comprising a UV stabilizer of the formula (1).
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: June 28, 2022
    Assignee: Momentive Performance Materials Inc.
    Inventors: Paul Furuta, Andreas Haeuseler, Gunnar Hoffmüller
  • Patent number: 11306205
    Abstract: The present invention relates to an addition-curable silicone rubber composition having self-bonding capability. The addition-curable silicone rubber composition exhibits self-bonding capability in particular to substrates that contain residual hydroxyl groups or other residual hydrosilyl-reacting groups on their surface, including polycarbonate, polyester, polyamide, polysulfone, polyurethane, phenolic resin, epoxy resin, cellulose, glass and the mixture thereof.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 19, 2022
    Assignee: MOMENTIVE PERFORMANCE MATERIALS, INC
    Inventors: Huiping Zhang, Srividhya Marimuthu, Gunnar Hoffmueller, John Mitchell Huggins, Enise Michalski
  • Publication number: 20220002492
    Abstract: Composition of comprising nano metal oxide/hydroxide particles and a polyorganosiloxane having increased refractive index, processes to cure these compositions for making transparent coats, shaped articles by an extrusion or molding process having a refractive index above the refractive index of the polyorganosiloxane. Use of the cured polyorganosiloxane compositions as optical devices, coats, lenses or light guides.
    Type: Application
    Filed: May 24, 2021
    Publication date: January 6, 2022
    Inventors: Thorsten Felder, Monika Friedrichs, Gunnar Hoffmüller, Abirami Srikanth, Douglas Dukes, Sumi Dinkar, Roland Wagner, Karl Heinz Stachulla
  • Publication number: 20210261778
    Abstract: The present invention relates to an oil-bleed self-bonding liquid silicone rubber composition having both self-bonding and self-lubricating capabilities. The oil-bleed self-bonding liquid silicone rubber composition exhibits self-bonding capability in particular to substrates that contain residual hydroxyl groups or other residual hydrosilyl-reacting groups on their surface, including polycarbonate, polyester, polyamide, polysulfone, polyurethane, phenolic resin, epoxy resin, cellulose, glass and the mixture thereof.
    Type: Application
    Filed: May 23, 2019
    Publication date: August 26, 2021
    Inventors: Huiping ZHANG, Clemens TRUMM, Gunnar HOFFMUELLER, John Mitchell HUGGINS, Hubertus EVERSHEIM, Srividhya MARIMUTHU, Enise MICHALSKI
  • Patent number: 11015024
    Abstract: Composition of comprising nano metal oxide/hydroxide particles and a polyorganosiloxane having increased refractive index, processes to cure these compositions for making transparent coats, shaped articles by an extrusion or molding process having a refractive index above the refractive index of the polyorganosiloxane. Use of the cured polyorganosiloxane compositions as optical devices, coats, lenses or light guides.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 25, 2021
    Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.
    Inventors: Thorsten Felder, Monika Friedrichs, Gunnar Hoffmüller, Abirami Srikanth, Douglas Dukes, Sumi Dinkar, Roland Wagner, Karl Heinz Stachulla
  • Publication number: 20210087355
    Abstract: The present invention relates to curable compositions comprising at least one compound of the formula (1): wherein R is C1-C10 alkyl, and R1-R10 each are independently selected from the group consisting of hydrogen and C1-C10 alkyl, with the proviso that at least one of R1-R10 is alkyl, and wherein the substitution patterns formed by the residues R1-R5 and R6-R10 on each of the aromatic rings are different from each other, cured compositions obtained from such curable compositions, mixtures of compounds of the formula (I), the use of such compounds and mixtures of such compounds as a UV stabilizer in curable compositions, and a process for the manufacture of curable compositions comprising a UV stabilizer of the formula (1).
    Type: Application
    Filed: September 20, 2019
    Publication date: March 25, 2021
    Inventors: Paul Furuta, Andreas Haeuseler, Gunnar Hoffmüller
  • Publication number: 20190375937
    Abstract: The present invention relates to an addition-curable silicone rubber composition having self-bonding capability. The addition-curable silicone rubber composition exhibits self-bonding capability in particular to substrates that contain residual hydroxyl groups or other residual hydrosilyl-reacting groups on their surface, including polycarbonate, polyester, polyamide, polysulfone, polyurethane, phenolic resin, epoxy resin, cellulose, glass and the mixture thereof.
    Type: Application
    Filed: December 20, 2017
    Publication date: December 12, 2019
    Applicant: Momentive Performance Materials Inc.
    Inventors: Huiping ZHANG, Srividhya MARIMUTHU, Gunnar HOFFMUELLER, John Mitchell HUGGINS, Enise MICHALSKI
  • Publication number: 20180371248
    Abstract: An asymmetrically substituted polyorganosiloxane comprising at least one or more siloxane blocks and different reactive groups at each end of the siloxane chain, e.g. an alkoxysilyl, alkenyl, epoxy, hydroxyaromatic or an ionic substituent. Each polyorganosiloxane block has substantially a monomodal chain length distribution and is suitable for the use as a surface modifying agent for organic or inorganic particles, as a surface active material, and/or as a compatibilizer in compositions having more two or more non-miscible phases.
    Type: Application
    Filed: July 20, 2016
    Publication date: December 27, 2018
    Inventors: Gunnar Hoffmüller, Thorsten Felder, Roland Wagner, Philip Kensbock, Anita Witossek, Silvia Effert, Joerg-Walter Hermann, Siegfried Hossinger, Andreas Haeuseler
  • Publication number: 20180208718
    Abstract: Composition of comprising nano metal oxide/hydroxide particles and a polyorganosiloxane having increased refractive index, processes to cure these compositions for making transparent coats, shaped articles by an extrusion or molding process having a refractive index above the refractive index of the polyorganosiloxane. Use of the cured polyorganosiloxane compositions as optical devices, coats, lenses or light guides.
    Type: Application
    Filed: July 20, 2016
    Publication date: July 26, 2018
    Inventors: Thorsten FELDER, Monika FRIEDRICHS, Gunnar HOFFMÜLLER, Abirami SRIKANTH, Douglas DUKES, Sumi DINKAR, Roland WAGNER, Karl Heinz STACHULLA
  • Patent number: 9951185
    Abstract: Disclosed herein is a composition comprising amino-functional polysiloxanes of high purity and their preparation. Also disclosed herein is an aminoalkyl-functional polysiloxane, a process for purifying this aminoalkyl-functional polysiloxane, a process for preparing the composition, a use of the composition, a polyorganosiloxane-polyorgano block copolymer, a process for the preparation of a polyorganosiloxane-polyorgano block copolymer and a shaped, formed and/or extruded shaped article.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 24, 2018
    Assignee: Momentive Performance Materials Inc.
    Inventors: John M. Huggins, Hurbertus Eversheim, Gunnar Hoffmüller
  • Patent number: 9931760
    Abstract: The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 3, 2018
    Assignee: Momentive Performance Materials GmbH
    Inventors: Johannes Gerardus Petrus Delis, Egbert Klaassen, Jörg-Walter Hermann, Holger Militz, Carsten Mai, Malte Pries, Roland Wagner, Karl-Heinz Sockel, Karl-Heinz Stachulla, Karl-Heinz Käsler, Gunnar Hoffmüller
  • Publication number: 20170022390
    Abstract: The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials.
    Type: Application
    Filed: February 22, 2016
    Publication date: January 26, 2017
    Inventors: Johannes Gerardus Petrus Delis, Egbert Klaassen, Jörg-Walter Hermann, Holger Militz, Carsten Mai, Malte Pries, Roland Wagner, Karl-Heinz Sockel, Karl-Heinz Stachulla, Karl-Heinz Käsler, Gunnar Hoffmüller
  • Publication number: 20160177037
    Abstract: Disclosed herein is a composition comprising amino-functional polysiloxanes of high purity and their preparation. Also disclosed herein is an aminoalkyl-functional polysiloxane, a process for purifying this aminoalkyl-functional polysiloxane, a process for preparing the composition, a use of the composition, a polyorganosiloxane-polyorgano block copolymer, a process for the preparation of a polyorganosiloxane-polyorgano block copolymer and a shaped, formed and/or extruded shaped article.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 23, 2016
    Inventors: John M. Huggins, Hurbertus Eversheim, Gunnar Hoffmüller
  • Patent number: 9308668
    Abstract: The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: April 12, 2016
    Assignee: Momentive Performance Materials GmbH
    Inventors: Johannes Gerardus Petrus Delis, Egbert Klaassen, Jörg-Walter Hermann, Holger Militz, Carsten Mai, Malte Pries, Roland Wagner, Karl-Heinz Sockel, Karl-Heinz Stachulla, Karl-Heinz Käsler, Gunnar Hoffmüller
  • Patent number: 8742053
    Abstract: The invention relates to novel polyamide-polysiloxane compounds, processes for their preparation, their use, precursors for their preparation and reactive compositions which contain the precursors.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: June 3, 2014
    Assignee: Momentive Performance Materials GmbH
    Inventors: Horst Lange, Karl-Heinz Sockel, Roland Wagner, Gunnar Hoffmüller
  • Publication number: 20140127523
    Abstract: The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials.
    Type: Application
    Filed: April 18, 2012
    Publication date: May 8, 2014
    Applicant: MOMENTIVE PERFORMANCE MATERIALS GMBH
    Inventors: Johannes Gerardus Petrus Delis, Egbert Klaassen, Jörg-Walter Hermann, Holger Militz, Carsten Mai, Malte Pries, Roland Wagner, Karl-Heinz Sockel, Karl-Heinz Stachulla, Karl-Heinz Käsler, Gunnar Hoffmüller
  • Patent number: 8673985
    Abstract: The present invention relates to novel polycarbonate-polyorganosiloxane and/or polyurethane-polyorganosiloxane compounds, methods for their production, their use, functional formulations containing them, precursors for their production, as well as reactive compositions containing the aforementioned precursors.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: March 18, 2014
    Assignee: Momentive Performance Materials GmbH
    Inventors: Horst Lange, Roland Wagner, Gunnar Hoffmüller, Karl-Heinz Sockel, Walter Simon