Patents Assigned to Fraunhofer Gesellschaft Petentabteilung
  • Patent number: 5618483
    Abstract: This invention relates to flexible cellulose fibers with a reduced modulus and a decreased NMR degree of order, particularly for use in the textile field, which are obtained by pressing out solutions of the cellulose in hydrous NMMNO through spinning nozzles along an air travel into an NMMNO-containing aqueous and/or alcoholic precipitation bath as well as by a conventional rinsing, aftertreatment and drying, with strengths of between 15 and 50 cN/tex, and to a process for their production. According to the invention, these flexible cellulose fibers have an initial modulus of less than 1,500 cN/tex, and the relationship of the heights of the lines at 88 ppm and 85 ppm above the spectrum base line in the highly resolved .sup.13 C-NMR solid-body spectrum is .ltoreq.1.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 8, 1997
    Assignee: Fraunhofer Gesellschaft Petentabteilung
    Inventors: Peter Weigel, Albrecht Bauer, Konrad Frigge, Jurgen Gensrich, Wolfgang Wagenknecht