Patents by Inventor Burkhard Thuermer

Burkhard Thuermer 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).

  • Publication number: 20210403705
    Abstract: The invention relates to a composition for production of a thermoplastic moulding compound, wherein the composition comprises or consists of at least the following constituents: A) 50.0% to 95.0% by weight of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyestercarbonate and aromatic polyester, B) 1.0% to 40.0% by weight of polymer free of epoxy groups, consisting of B1) rubber-modified graft polymer, prepared by emulsion polymerization and B2) optionally rubber-free vinyl (co)polymer, C) 0.1% to 7.5% by weight of a polymer containing structural elements that derive from styrene and an epoxy-containing vinyl monomer, D) 1.0% to 20.0% by weight of phosphorus-containing flame retardant, E) 0.1% to 10.0% by weight of additives, and F) 0% to 10.0% by weight of one or more fillers, where component C) has a weight ratio of structural elements that derive from styrene to those that derive from epoxy-containing vinyl monomers of 100:1 to 1:1.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 30, 2021
    Inventors: Thomas Eckel, Sven Hobeika, Ralf Hufen, Andreas Seidel, Burkhard Thuermer
  • Publication number: 20210047512
    Abstract: A composition for production of a thermoplastic moulding compound, wherein the composition comprises the following constituents: A) 45.0% to 95.0% by weight of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyestercarbonate and aromatic polyester, B) 1.0% to 35.0% by weight of polymer free of epoxy groups, consisting of B1) rubber-modified graft polymer and B2) optionally rubber-free vinyl (co)polymer, C) 0.1% to 10.0% by weight of a polymer comprising structural elements that derive from styrene and an epoxy-comprising vinyl monomer, D) 1.0% to 20.0% by weight of phosphorus-comprising flame retardant, E) 1.0% to 35.0% by weight of filler, and F) 0.1% to 10.0% by weight of additives, wherein component C has a weight ratio of structural elements that derive from styrene to those that derive from epoxy-comprising vinyl monomers of 100:1 to 1:1. Related processes, compounds, and moulded articles are also provided.
    Type: Application
    Filed: June 22, 2018
    Publication date: February 18, 2021
    Inventors: Thomas Eckel, Sven Hobeika, Ralf Hufen, Andreas Seidel, Burkhard Thuermer
  • Publication number: 20200270451
    Abstract: The invention relates to a composition for production of a thermoplastic moulding compound, wherein the composition comprises or consists of at least the following constituents: A) 50.0% to 95.0% by weight of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyestercarbonate and aromatic polyester, B) 1.0% to 35.0% by weight of at least one polymer free of epoxy groups, consisting of B1) a rubber-modified graft polymer having an elastomeric acrylate rubber graft base, B2) optionally a rubber-modified graft polymer based on vinylaromatics, ring-substituted vinylaromatics and/or (C1-C8)-alkyl methacrylates and having a different graft base from component B1), and B3) optionally a rubber-free vinyl (co)polymer, C) 0.1% to 10.0% by weight of a polymer containing structural elements that derive from styrene and an epoxy-containing vinyl monomer, D) 1.0% to 20.0% by weight of phosphorus-containing flame retardant, and E) 0.1% to 20.
    Type: Application
    Filed: June 22, 2018
    Publication date: August 27, 2020
    Inventors: Thomas Eckel, Sven Hobeika, Ralf Hufen, Andreas Seidel, Burkhard Thuermer
  • Patent number: 8969448
    Abstract: The present invention relates to moulding compositions of polycarbonates and graft polymers and optionally further additives and components, which have, in addition to a high resistance to chemicals, a good resistance to heat, in particular a low tendency towards yellowing and a low tendency towards degradation when exposed to heat. In a particular, flameproofed embodiment, the after-burn time in a UL94 classification is furthermore reduced.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: March 3, 2015
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Eckel, Andreas Seidel, Martin Haussler, Burkhard Thuermer
  • Publication number: 20130289177
    Abstract: The present invention relates to moulding compositions of polycarbonates and graft polymers and optionally further additives and components, which have, in addition to a high resistance to chemicals, a good resistance to heat, in particular a low tendency towards yellowing and a low tendency towards degradation when exposed to heat. In a particular, flameproofed embodiment, the after-burn time in a UL94 classification is furthermore reduced.
    Type: Application
    Filed: April 22, 2013
    Publication date: October 31, 2013
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Thomas Eckel, Andreas Seidel, Martin Haussler, Burkhard Thuermer
  • Patent number: 8383709
    Abstract: The present invention relates to flame-resistant moulding compositions of polycarbonates and graft polymers which, in addition to good flow properties, have very good mechanical properties and a particularly good, trouble-free surface. These moulding compositions are suitable in particular for injection moulding uses for mouldings with thin wall thicknesses and high-gloss surfaces. The thermoplastic moulding compositions according to the invention comprise A) 65.0 to 82.0 parts by wt. of at least one aromatic polycarbonate, B) 4.0 to 11.0 parts by wt. of at least one graft polymer, C) 14.0 to 24.0 parts by wt. of at least one phosphorus-containing flameproofing agent, wherein the sum of the parts by weight of components A to C adds up to 100 parts by weight and the total content of the polymer which is formed from the grafting monomers or is added in the free form and is not bonded chemically to the graft base is less than 2.0 wt. %, based on the total moulding composition.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 26, 2013
    Assignee: Bayer Materialscience AG
    Inventors: Thomas Eckel, Burkhard Thuermer, Vera Taschner, Dieter Wittmann
  • Patent number: 8349926
    Abstract: The present invention relates to scratch-resistant, impact-resistant polycarbonate (PC) compositions and moulding compositions which have good mechanical properties and a high resistance to chemicals coupled with good flameproofing properties, and show improved flow properties during processing. The present invention furthermore relates to a process for the preparation of the compositions and their use for the production of shaped articles, in particular housings of flat screen apparatuses.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: January 8, 2013
    Assignee: Bayer Materialscience AG
    Inventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer
  • Patent number: 8349927
    Abstract: The present invention relates to scratch-resistant, impact-resistant polycarbonate (PC) compositions and molding compositions which have good mechanical properties as well as high resistance to chemicals, to a process for their preparation, and to their use in the production of molded articles, in particular of casings for flat screen devices.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: January 8, 2013
    Assignee: Bayer Materialscience AG
    Inventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer
  • Patent number: 8344051
    Abstract: The present invention relates to flameproofed, impact-modified, scratch-resistant polycarbonate (PC) compositions and molding compositions with surface-modified, calcined kaolin as filler, which have good mechanical properties, good flowability and high chemical resistance. Furthermore, the present application relates to the use of the compositions for the production of moldings.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: January 1, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer, Dieter Wittmann
  • Publication number: 20110263766
    Abstract: The present invention relates to flame-resistant moulding compositions of polycarbonates and graft polymers which, in addition to good flow properties, have very good mechanical properties and a particularly good, trouble-free surface. These moulding compositions are suitable in particular for injection moulding uses for mouldings with thin wall thicknesses and high-gloss surfaces. The thermoplastic moulding compositions according to the invention comprise A) 65.0 to 82.0 parts by wt. of at least one aromatic polycarbonate, B) 4.0 to 11.0 parts by wt. of at least one graft polymer, C) 14.0 to 24.0 parts by wt. of at least one phosphorus-containing flameproofing agent, wherein the sum of the parts by weight of components A to C adds up to 100 parts by weight and the total content of the polymer which is formed from the grafting monomers or is added in the free form and is not bonded chemically to the graft base is less than 2.0 wt. %, based on the total moulding composition.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Thomas ECKEL, Burkhard THUERMER, Vera TASCHNER, Dieter WITTMANN
  • Publication number: 20110152417
    Abstract: The present invention relates to scratch-resistant, impact-resistant polycarbonate (PC) compositions and moulding compositions which have good mechanical properties and a high resistance to chemicals coupled with good flameproofing properties, and show improved flow properties during processing. The present invention furthermore relates to a process for the preparation of the compositions and their use for the production of shaped articles, in particular housings of flat screen apparatuses.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Thomas ECKEL, Vera Taschner, Achim Feldermann, Burkhard Thuermer
  • Publication number: 20110152418
    Abstract: The present invention relates to scratch-resistant, impact-resistant polycarbonate (PC) compositions and moulding compositions which have good mechanical properties as well as high resistance to chemicals, to a process for their preparation, and to their use in the production of moulded articles, in particular of casings for flat screen devices.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Thomas ECKEL, Vera Taschner, Achim Feldermann, Burkhard Thuermer
  • Publication number: 20110152416
    Abstract: The present invention relates to flameproofed, impact-modified, scratch-resistant polycarbonate (PC) compositions and moulding compositions with surface-modified, calcined kaolin as filler, which have good mechanical properties, good flowability and high chemical resistance. Furthermore, the present application relates to the use of the compositions for the production of mouldings.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: BAYER MATERIAL SCIENCE AG
    Inventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer, Dieter Wittmann
  • Patent number: 7834075
    Abstract: A poly(ester)carbonate compositions characterized by its flame resistance and high impact strength is disclosed. The composition that contains branched aromatic poly(ester)carbonate, a graft polymer wherein the graft base is silicone rubber or silicone-acrylate rubber, talc, phosphorus-containing flameproofing agent, and an inorganic boron compound, and an optional anti-dripping agent satisfies enhanced fire-protection requirements.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: November 16, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann
  • Patent number: 7833448
    Abstract: A process for producing a three-dimensional article comprising a poly(ester)carbonate compositions characterized by its flame resistance and high impact strength is disclosed. The composition that contains branched aromatic poly(ester)carbonate, a graft polymer wherein the graft base is silicone rubber or silicone-acrylate rubber, talc, phosphorus-containing flameproofing agent, and an inorganic boron compound, and an optional anti-dripping agent satisfies enhanced fire-protection requirements.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: November 16, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann
  • Patent number: 7834069
    Abstract: A thermoplastic molding composition that features good mechanical properties as well as processability is disclosed. The composition that contains aromatic polycarbonate and/or aromatic polyester carbonate, rubber-modified graft polymer and a plurality of hollow ceramic beads is suitable for making molded articles characterized by good ESC behavior and flammability rating.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: November 16, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Eckel, Achim Feldermann, Burkhard Thuermer, Vera Buchholz
  • Publication number: 20080132618
    Abstract: A thermoplastic molding composition that features good mechanical properties as well as processability is disclosed. The composition that contains aromatic polycarbonate and/or aromatic polyester carbonate, rubber-modified graft polymer and a plurality of hollow ceramic beads is suitable for making molded articles characterized by good ESC behavior and flammability rating.
    Type: Application
    Filed: November 16, 2007
    Publication date: June 5, 2008
    Inventors: Thomas Eckel, Achim Feldermann, Burkhard Thuermer, Vera Buchholz
  • Publication number: 20070225441
    Abstract: A flame resistant, impact-modified polycarbonate composition is disclosed. The composition that is suitable especially for preparing thermoformed articles comprises branched aromatic polycarbonate and/or branched aromatic polyester carbonate, a graft polymer containing silicone rubber or silicone acrylate rubber, talc, and a phosphorus-containing flameproofing agent, and meets high requirements in terms of fireproofing. Also disclosed is a process for the preparation of the composition and its use in the production of molded articles.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 27, 2007
    Inventors: Eckhard Wenz, Thomas Eckel, Vera Buchholz, Dieter Wittmann, Burkhard Thuermer
  • Publication number: 20070225412
    Abstract: A poly(ester)carbonate compositions characterized by its flame resistance and high impact strength is disclosed. The composition that contains branched aromatic poly(ester)carbonate, a graft polymer wherein the graft base is silicone rubber or silicone-acrylate rubber, talc, phosphorus-containing flameproofing agent, and an inorganic boron compound, and an optional anti-dripping agent satisfies enhanced fire-protection requirements.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 27, 2007
    Inventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann
  • Publication number: 20070225413
    Abstract: A process for producing a three-dimensional article comprising a poly(ester)carbonate compositions characterized by its flame resistance and high impact strength is disclosed. The composition that contains branched aromatic poly(ester)carbonate, a graft polymer wherein the graft base is silicone rubber or silicone-acrylate rubber, talc, phosphorus-containing flameproofing agent, and an inorganic boron compound, and an optional anti-dripping agent satisfies enhanced fire-protection requirements.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 27, 2007
    Inventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann