Patents by Inventor Alfred Georges Oertli

Alfred Georges Oertli 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).

  • Stabilization of polyolefins in permanent contact with chlorinated water
    Patent number: 7132467
    Abstract: Polyolefin mouldings that have excellent stability on permanent contact with chlorinated water comprise, as stabilizer, at least a compound selected from the group consisting of i) an epoxidized fatty acid having 3 to 22 carbon atoms or an aklyl ester thereof having 1 to 18 carbon atoms; and/or ii) an organotin compound; and/or iii) a compound containing at least one radical of the formula A or B.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: November 7, 2006
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Erich Kramer, Alfred Georges Oertli, Markus Grob
  • Stabilizing polycarbonates
    Patent number: 6310220
    Abstract: This invention relates to compositions comprising a polycarbonate, polyester or polyketone which is subject to oxidative, thermal and/or light-induced degradation, or their mixtures and blends, and at least one benzofuran-2-one type compound, to the use thereof for stabilising polycarbonate, polyester or polyketone or their mixtures or blends against oxidative, thermal and/or light-induced degradation, as well as to a process for stabilising these plastic materials.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: October 30, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: André Schmitter, Alfred Georges Oertli