Patents Assigned to Nylstar S.A.
  • Method for making stabilised polyamide compositions
    Patent number: 7074851
    Abstract: The invention relates to a process for preparing stabilized compositions based on polyamide. The stabilizer is a phosphorus stabilizer selected from phosphorous acid and hypophosphorous acid. It is introduced before or during the polymerization of the polyamide. The use of these stabilizers prevents foaming phenomena.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: July 11, 2006
    Assignee: Nylstar S.A.
    Inventors: Thierry Charbonneaux, Jean-François Thierry