Patents Examined by William F. Hamock
  • Conditioning of texturized filament yarns
    Patent number: 4247291
    Abstract: Process for conditioning texturized filament yarns, which comprises treating the yarn, after dyeing, with a fatty acid hydroxyalkylethylene diamine condensation product obtained by condensation of 1 mol of hydroxyethyl- or hydroxypropylethylene diamine with 1.2 to 1.8 mols of one or several C.sub.12-22 fatty acids at 160.degree. to 220.degree. C.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: January 27, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Vautrin, Gustav Dollinger