Patents Assigned to EMS-Polyloy GmbH
  • Method of producing partially aromatic copolyamides from aromatic dicarboxylic acid esters
    Patent number: 5895809
    Abstract: The invention relates to a method of producing partially aromatic copolyamides from polymeric esters of aromatic dicarboxylic acids by amidation of the ester groups with diamines, removal of the split-off alcohols or diols and after-condensation of the low-molecular precondensates as well as by the following compounding to polyamide molding materials.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: April 20, 1999
    Assignee: EMS-Polyloy GmbH
    Inventors: Harald Wagner, Joachim Ensinger, Erich Krumpschmid