Patents Assigned to Schaefer Additivsysteme GmbH
  • Hydrolysis-stable film comprising a polyester with a hydrolysis stabilizer and process for its production and its use
    Patent number: 7241507
    Abstract: The invention relates to a hydrolysis-stable polyester whose thickness is preferably in the range from 0.4 to 500 ?m. The film comprises polyester and at least one hydrolysis stabilizer and is distinguished by its low hydrolysis rate. The invention furthermore relates to a process for the production of the film and its use.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: July 10, 2007
    Assignees: Mitsubishi Polyester Film GmbH, Schaefer Additivsysteme GmbH
    Inventors: Holger Kliesch, Bodo Kuhmann, Thorsten Kiehne, Ingo Fischer, Gottfried Hilkert, Volker Schaefer