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).
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Publication number: 20210403705Abstract: 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: ApplicationFiled: June 22, 2018Publication date: December 30, 2021Inventors: Thomas Eckel, Sven Hobeika, Ralf Hufen, Andreas Seidel, Burkhard Thuermer
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Publication number: 20210047512Abstract: 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: ApplicationFiled: June 22, 2018Publication date: February 18, 2021Inventors: Thomas Eckel, Sven Hobeika, Ralf Hufen, Andreas Seidel, Burkhard Thuermer
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Publication number: 20200270451Abstract: 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: ApplicationFiled: June 22, 2018Publication date: August 27, 2020Inventors: Thomas Eckel, Sven Hobeika, Ralf Hufen, Andreas Seidel, Burkhard Thuermer
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Patent number: 8969448Abstract: 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: GrantFiled: April 22, 2013Date of Patent: March 3, 2015Assignee: Bayer MaterialScience AGInventors: Thomas Eckel, Andreas Seidel, Martin Haussler, Burkhard Thuermer
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Publication number: 20130289177Abstract: 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: ApplicationFiled: April 22, 2013Publication date: October 31, 2013Applicant: BAYER INTELLECTUAL PROPERTY GMBHInventors: Thomas Eckel, Andreas Seidel, Martin Haussler, Burkhard Thuermer
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Patent number: 8383709Abstract: 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: GrantFiled: April 21, 2011Date of Patent: February 26, 2013Assignee: Bayer Materialscience AGInventors: Thomas Eckel, Burkhard Thuermer, Vera Taschner, Dieter Wittmann
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Patent number: 8349926Abstract: 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: GrantFiled: December 16, 2010Date of Patent: January 8, 2013Assignee: Bayer Materialscience AGInventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer
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Patent number: 8349927Abstract: 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: GrantFiled: December 16, 2010Date of Patent: January 8, 2013Assignee: Bayer Materialscience AGInventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer
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Patent number: 8344051Abstract: 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: GrantFiled: December 16, 2010Date of Patent: January 1, 2013Assignee: Bayer MaterialScience AGInventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer, Dieter Wittmann
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Publication number: 20110263766Abstract: 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: ApplicationFiled: April 21, 2011Publication date: October 27, 2011Applicant: BAYER MATERIALSCIENCE AGInventors: Thomas ECKEL, Burkhard THUERMER, Vera TASCHNER, Dieter WITTMANN
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Publication number: 20110152417Abstract: 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: ApplicationFiled: December 16, 2010Publication date: June 23, 2011Applicant: BAYER MATERIALSCIENCE AGInventors: Thomas ECKEL, Vera Taschner, Achim Feldermann, Burkhard Thuermer
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Publication number: 20110152418Abstract: 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: ApplicationFiled: December 16, 2010Publication date: June 23, 2011Applicant: BAYER MATERIALSCIENCE AGInventors: Thomas ECKEL, Vera Taschner, Achim Feldermann, Burkhard Thuermer
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Publication number: 20110152416Abstract: 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: ApplicationFiled: December 16, 2010Publication date: June 23, 2011Applicant: BAYER MATERIAL SCIENCE AGInventors: Thomas Eckel, Vera Taschner, Achim Feldermann, Burkhard Thuermer, Dieter Wittmann
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Patent number: 7834075Abstract: 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: GrantFiled: March 19, 2007Date of Patent: November 16, 2010Assignee: Bayer MaterialScience AGInventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann
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Patent number: 7833448Abstract: 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: GrantFiled: March 19, 2007Date of Patent: November 16, 2010Assignee: Bayer MaterialScience AGInventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann
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Patent number: 7834069Abstract: 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: GrantFiled: November 16, 2007Date of Patent: November 16, 2010Assignee: Bayer MaterialScience AGInventors: Thomas Eckel, Achim Feldermann, Burkhard Thuermer, Vera Buchholz
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Publication number: 20080132618Abstract: 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: ApplicationFiled: November 16, 2007Publication date: June 5, 2008Inventors: Thomas Eckel, Achim Feldermann, Burkhard Thuermer, Vera Buchholz
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Publication number: 20070225441Abstract: 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: ApplicationFiled: March 19, 2007Publication date: September 27, 2007Inventors: Eckhard Wenz, Thomas Eckel, Vera Buchholz, Dieter Wittmann, Burkhard Thuermer
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Publication number: 20070225412Abstract: 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: ApplicationFiled: March 19, 2007Publication date: September 27, 2007Inventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann
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Publication number: 20070225413Abstract: 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: ApplicationFiled: March 19, 2007Publication date: September 27, 2007Inventors: Vera Buchholz, Eckhard Wenz, Thomas Eckel, Burkhard Thuermer, Dieter Wittmann