Patents by Inventor Thomas Eckel

Thomas Eckel 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: 7319116
    Abstract: A flame resistant thermoplastic molding composition having improved mechanical properties is disclosed. The composition contains polycarbonate, a graft polymer and a phosphorus compounds of formula (I): and a mixture of fluorinated polyolefins with polyalkyl (meth)acrylates.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: January 15, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Eckel, Andreas Seidel, Juan Gonzalez-Blanco, Dieter Wittmann
  • 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
  • Patent number: 7235598
    Abstract: A thermoplastic molding compositions comprising thermoplastic polycarbonate and an additive amount of an aluminum compound is disclosed. The aluminum compound is characterized by its particle size and the composition is characterized by its improved anti-static properties.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: June 26, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Michael Zobel, Thomas Eckel, Dieter Wittmann, Bernd Keller
  • Publication number: 20070142535
    Abstract: A thermoplastic molding composition that features improved thermal stability and a relatively low maximum rate of decomposition in the event of fire is disclosed. The composition contains an aromatic polycarbonate and/or polyester carbonate, and a modified layered compound, the modification with organic polymer by means of a solvent-free melt process. Optional additional components include an impact modifier, a thermoplastic (co)copolymer, and a phosphorus compound.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 21, 2007
    Inventors: Eckhard Wenz, Uwe Peucker, Thomas Eckel, Dieter Wittmann, Arno Nennemann, Vera Buchholz
  • Publication number: 20070135568
    Abstract: A thermoplastic molding composition having improved properties is disclosed. The composition comprises polycarbonate resin, a first graft polymer, a first free copolymer, a second graft polymer and a second free copolymer; the weight-average molecular weight of the first free copolymer being lower by at least 32,000 g/mol with regard to that of the second free copolymer. The inventive composition features improved balance of melt flowability and ductility, good resistance to hydrolysis and process stability.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 14, 2007
    Inventors: Thomas Eckel, Andreas Seidel, Dieter Wittmann
  • Patent number: 7223812
    Abstract: A thermoplastic molding composition containing talc is disclosed. The composition wherein talc has a median particle size of less than 1000 nm further contains a polycarbonate and/or polyester-carbonate, and a graft polymer having as graft base a rubber having a glass transition temperature of below about 10° C. is suitable for preparing molded articles having improved mechanical properties, such as weld line strength, elongation at break and toughness at low temperatures.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: May 29, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Marc Vathauer, Thomas Eckel, Holger Warth, Dieter Wittmann
  • Patent number: 7220790
    Abstract: A thermoplastic molding composition having good flame resistance, melt flowability, resistance to chemicals and creep is disclosed. The composition contains A) at least one member having weight average molecular weight (Mw) of 25,000 to 35,000 g/mol, selected from the group consisting of aromatic polycarbonate and polyestercarbonate B) ABS graft polymer produced by the mass polymerization process and characterized in (i) having a butadiene content of 8 to 15% in relation to the weight of the graft polymer, (ii) having an acrylic acid derivative content of 15 to 30% in relation to the total weight of the acrylic derivative and styrene monomer, and (iii) containing styrene monomer-acrylic acid derivative copolymer having a weight average molecular weight of 5·104 to 14·104 g/mol. The composition may further contain one or more of halogen-free phosphorus compounds, fluorinated polyolefin, a polymer containing acrylate monomer and an inorganic material in particulate form.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: May 22, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel, Dieter Wittmann, Dirk Kurzidim
  • Publication number: 20070060678
    Abstract: A thermoplastic molding composition suitable for preparing articles by thermoforming is disclosed. The molding composition that comprise A) branched, aromatic poly(ester)carbonate, B) graft polymer, C) an optional vinyl(co)polymer and or polyalkylene terephthalate, D) at least one flame retarding phosphorous compound selected from the group consisting of mono- and oligomeric phosphorus and phosphonic acid esters, phosphonate amines and phosphazenes and E) talc, is characterized in that its flexural modulus at room temperature is at least 3000 N/mm2 and that its falling dart energy at break, at ?30° C., is at least 40.0 J. Sheets extruded of the composition are suitable for making useful articles by thermoforming.
    Type: Application
    Filed: September 14, 2005
    Publication date: March 15, 2007
    Inventors: Eckhard Wenz, Pierre Moulinie, Thomas Eckel, Vera Buchholz, Dieter Wittmann, Bruce Hager, Fred Zaganiacz
  • Patent number: 7186767
    Abstract: A thermoplastic molding compositions having improved stress cracking resistance is disclosed. The composition contains A) 40 to 99.5 parts by weight of at least one branched resin selected from a first group consisting of aromatic polycarbonate and polyestercarbonate and B) 0.5 to 60 parts by weight of graft polymer containing a grafting shell and a grafting base, said grafting base being other than polybutadiene rubber. The structure of the branched resin contains at least one residue of a branching agent selected from among tri-functional phenolic monomer and tetra-functional phenolic monomer.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: March 6, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel, Holger Warth
  • Publication number: 20060293422
    Abstract: A thermoplastic molding composition that features improved properties is disclosed. The composition contains A) aromatic polycarbonate and/or polyester carbonate, B) polyalkylene terephthalate, C) graft polymer, D) an oligomeric phosphorus compound of formula (I), in which R1, R3, R4 independently of each other mean C1-C8 alkyl, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12 aralkyl, n independently of each other mean 0 or 1, q mean 0.5 to 15, and optionally E) fluorinated polyolefin.
    Type: Application
    Filed: July 15, 2005
    Publication date: December 28, 2006
    Inventors: Andreas Seidel, Thomas Eckel, Dieter Wittmann
  • Publication number: 20060280934
    Abstract: The present invention relates to a multilayer product (composite material), wherein the first layer is a layer which is optically dense in the infrared range, and wherein the second layer contains a polymer (plastics) as substrate. The invention additionally relates to a method of improving the flame resistance of mouldings made from polymers and to a method of producing the multilayer products as well as to components which contain the above-mentioned multilayer products.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 14, 2006
    Inventors: Eckhard Wenz, Thomas Eckel, Bernhard Schartel, Uwe Beck, Andreas Hertwig, Matthias Weise, Johannes Strumpfel, Ekkehart Reinhold
  • Patent number: 7144935
    Abstract: A flame resistant poly(ester)carbonate composition is disclosed. The composition contains at least one phosphorus-silicon compound, the compound has a phosphorus content of 1 to 20% and a silicon content of 1 to 20%, and is characterized in that its weight loss (assessed by thermogravimetric analysis under nitrogen inert gas at a heating rate of 20° K/min,) at 280° C. is less than 30%. The preferred phosphorus-silicon compound is produced by thermal oligomerization from phosphorylated silanes.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: December 5, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Michael Wagner, Jochen Endtner, Wolfgang Ebenbeck, Thomas Eckel, Dieter Wittmann
  • Publication number: 20060241243
    Abstract: An impact-modified polycarbonate composition is disclosed. The composition features good processing stability, low temperature toughness and chemical resistance to stress cracking. It includes two copolymers of a vinylaromatic compound and a functionalized vinylolefinic compound and is suitable for the production of complex components.
    Type: Application
    Filed: April 17, 2006
    Publication date: October 26, 2006
    Inventors: Andreas Seidel, Thomas Eckel, Holger Warth, Eckhard Wenz, Bernd Keller, Dieter Wittmann
  • Patent number: 7105592
    Abstract: A thermoplastic molding composition comprising polycarbonate resin, at least one impact modifier and highly pure talc is disclosed. The talc is characterized in that it contains Al2O3 in an amount of less than 1% relative to the weight of said talc. The composition that features high toughness, good processability and low coefficient of thermal expansion is suitable for the manufacture of exterior parts of vehicles.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: September 12, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Holger Warth, Andreas Seidel, Thomas Eckel, Dieter Wittmann, Bernd Keller
  • Publication number: 20060189739
    Abstract: A thermoplastic molding composition is disclosed. The composition that contains at least one member selected from the group consisting of aromatic polycarbonate and polyester carbonate, a rubber-modified vinyl (co)polymer, and calcium carbonate having average particle diameter of less than 100 nm is particularly suitable for making articles resistant to hydrolysis.
    Type: Application
    Filed: January 30, 2006
    Publication date: August 24, 2006
    Inventors: Eckhard Wenz, Thomas Eckel, Olaf Meincke, Holger Warth, Herbert Eichenauer
  • Patent number: 7067567
    Abstract: A thermoplastic molding composition having improved flammability rating and mechanical properties is disclosed. The composition contains aromatic polycarbonate having a weight-average molecular weight Mw?25,000 g/mol., polyalkylene terephthalate, graft (co)polymer characterized in that its grafted phase includes structural units derived from acrylate monomers, an oligomeric organic phosphoric acid ester, and an optional fluorinated polyolefin. In a preferred embodiment the graft (co)polymer is characterized in its core-shell morphology.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: June 27, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel
  • Publication number: 20060122325
    Abstract: The present invention relates to thermoplastic blends modified with special co- precipitation products, a process for producing them and moulded parts manufactured from them.
    Type: Application
    Filed: November 17, 2003
    Publication date: June 8, 2006
    Inventors: Eckhard Wenz, Thomas Konig, Thomas Eckel, Herbert Eichenauer, Holger Warth, Bernd Urbanneck
  • Patent number: 7030180
    Abstract: A polycarbonate composition containing inorganic material with an anisotropic particle geometry and with an iron content of less than about 100 ppm is disclosed. The composition is suitable for producing molded articles exhibiting improved mechanical properties both at ambient and low temperatures.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: April 18, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Seidel, Thomas Eckel, Holger Warth, Dieter Wittmann