Patents by Inventor Gesa Dern

Gesa Dern 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: 8969477
    Abstract: The invention relates to compositions containing at least one (co)polycarbonate stable at high temperature and at least one ethylene-alkyl acrylate block copolymer, and to moldings and injection molded parts and extrudates obtainable from these compositions.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: March 3, 2015
    Assignee: Bayer MaterialScience AG
    Inventors: Gesa Dern, Heinz Pudleiner, Tanja Cassel, Carsten Witzke
  • Patent number: 8916630
    Abstract: The present invention relates to a thermoplastic molding composition composed of polycarbonate and inorganic fillers which comprises from 0.01 to 0.5 part by weight of at least one anhydride-modified alpha-olefin terpolymer and which has a high degree of rigidity and nevertheless exhibits good strength, as well as stress-strain characteristics corresponding to those of an unreinforced polycarbonate. Surprisingly, the molding composition additionally exhibits an improvement in flame retardancy. The invention relates in particular to flame-retardant, thermoplastic molding compositions filled with glass fibers, and to the production and use thereof. The property profile is, surprisingly, independent of the degree of interaction of the filler with the polycarbonate matrix.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: December 23, 2014
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Gesa Dern, Birte Sämisch, Tanja Cassel
  • Publication number: 20140243467
    Abstract: The present invention relates to a thermoplastic moulding composition composed of polycarbonate and inorganic fillers which comprises from 0.01 to 0.5 part by weight of at least one anhydride-modified alpha-olefin terpolymer and which has a high degree of rigidity and nevertheless exhibits good strength, as well as stress-strain characteristics corresponding to those of an unreinforced polycarbonate. Surprisingly, the moulding composition additionally exhibits an improvement in flame retardancy. The invention relates in particular to flame-retardant, thermoplastic moulding compositions filled with glass fibres, and to the production and use thereof. The property profile is, surprisingly, independent of the degree of interaction of the filler with the polycarbonate matrix.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 28, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Gesa Dern, Birte Sämisch, Tanja Cassel
  • Patent number: 8716374
    Abstract: The present invention relates to a composition comprising, (a) a transparent or translucent polymer or polymer blend in an amount which together with components b) to g) gives 100 wt. %, (b) optionally 0 ppm to 2500 ppm of one or more stabilizers, (c) 0.001 ppm to 10,000 ppm of at least one dye comprising structure 1a and/or 1b, (d) 0.001 ppm to 10,000 ppm of at least one dye selected from the group consisting of dyes differing from dyes having structure 1a and/or 1b based on perinone or indanthrone and dyes based on a phthalocyanine or phthalocyanine complex, (e) optionally 0 ppm to 3000 ppm of one or more release agents, (f) optionally 0 ppm to 6000 ppm of one or more UV absorbers, and (g) optionally 0 ppm to 500,000 ppm of one or more further additives.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 6, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Gesa Dern, Alexander Meyer, Joerg Reichenauer
  • Publication number: 20120259055
    Abstract: The invention relates to compositions containing at least one (co)polycarbonate stable at high temperature and at least one ethylene-alkyl acrylate block copolymer, and to mouldings and injection moulded parts and extrudates obtainable from these compositions.
    Type: Application
    Filed: June 20, 2012
    Publication date: October 11, 2012
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Gesa Dern, Heinz PUDLEINER, Tanja CASSEL, Carsten WITZKE
  • Publication number: 20120157586
    Abstract: The present invention relates to a composition comprising, (a) a transparent or translucent polymer or polymer blend in an amount which together with components b) to g) gives 100 wt. %, (b) optionally 0 ppm to 2500 ppm of one or more stabilisers, (c) 0.001 ppm to 10,000 ppm of at least one dye comprising structure 1a and/or 1b, (d) 0.001 ppm to 10,000 ppm of at least one dye selected from the group consisting of dyes differing from dyes having structure 1a and/or 1b based on perinone or indanthrone and dyes based on a phthalocyanine or phthalocyanine complex, (e) optionally 0 ppm to 3000 ppm of one or more release agents, (f) optionally 0 ppm to 6000 ppm of one or more UV absorbers, and (g) optionally 0 ppm to 500,000 ppm of one or more further additives.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Gesa Dern, Alexander Meyer, Joerg Reichenauer
  • Publication number: 20110269896
    Abstract: Moldings obtainable from compositions comprising A) from 99.91 to 85% by weight of thermoplastic and B) from 0.09 to 15% by weight of multiwall carbon nanotubes, which have a 20° gloss level of from 104 to 20 and a 60° gloss level of from 103 to 50, measured to ISO 2813 using a Byk-Gardner haze-gloss device, and the use of the compositions for the production of moldings with these gloss levels.
    Type: Application
    Filed: August 19, 2008
    Publication date: November 3, 2011
    Applicant: BAYER MATERIAL SCIENCE AG
    Inventors: Rolf Wehrmann, Michael Erkelenz, Gesa Dern, Berit Krauter
  • Publication number: 20110160411
    Abstract: The invention relates to compositions containing at least one (co)polycarbonate stable at high temperature and at least one ethylene-alkyl acrylate block copolymer, and to mouldings and injection moulded parts and extrudates obtainable from these compositions.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 30, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Gesa Dern, Heinz Pudleiner, Tanja Cassel, Carsten Witzke