Patents by Inventor Gunda Morgenstern

Gunda Morgenstern 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).

  • Method and device for continuously producing copolyamides with melting points greater than 265° C.
    Patent number: 7615606
    Abstract: The invention relates to a method for continuously producing copolyamides with melting points greater than approximately 265° C. According to the invention, in a continuous process, partially aromatic and partially crystalline polyamides of the following chemical systems with defined molar percentages of the individual components are produced during the synthesis of polymers: 30 to 50 mol % of aromatic dicarboxylic acids, which are derived from terephthalic acid; 30 to 50 mol % of aliphatic diamines, which are derived from hexamethylenediamine or of cycloaliphatic diamines having at least 6 C atoms, and; 0.5-25 mol % of aromatic diamines or cyclic diamines with at least 6 C atoms. The sum of all polymer-forming components add up to a composition of 100 mol %, and a stoichiometric ratio between amines and carboxylic acids exists.
    Type: Grant
    Filed: May 21, 2005
    Date of Patent: November 10, 2009
    Assignee: PE Polymer Engineering GmbH & Co. Forschungs KG
    Inventors: Karlheinz Wiltzer, Gunda Morgenstern, Peter Lausmann
  • Method and Device for Continuously Producing Copolyamides with Melting Points Gr Eater Than 265 C
    Publication number: 20080051527
    Abstract: The invention relates to a method for continuously producing copolyamides with melting points greater than approximately 265° C. According to the invention, in a continuous process, partially aromatic and partially crystalline polyamides of the following chemical systems with defined molar percentages of the individual components are produced during the synthesis of polymers: 30 to 50 mol % of aromatic dicarboxylic acids, which are derived from terephthalic acid; 30 to 50 mol % of aliphatic diamines, which are derived from hexamethylenediamine or of cycloaliphatic diamines having at least 6 C atoms, and; 0.5-25 mol % of aromatic diamines or cyclic diamines with at least 6 C atoms. The sum of all polymer-forming components add up to a composition of 100 mol %, and a stoichiometric ratio between amines and carboxylic acids exists.
    Type: Application
    Filed: May 21, 2005
    Publication date: February 28, 2008
    Inventors: Karlheinz Wiltzer, Gunda Morgenstern, Peter Lausmann