Patents Assigned to Courtaulds Fibres (Holdings) Limited & Buss AG
  • Forming solutions
    Patent number: 5534113
    Abstract: A solution of cellulose is formed by moving a premix of a tertiary amine N-oxide, water and cellulose through a thin-film evaporator using a bladed rotor under treatment conditions which specify, inter alia, an area of heated surface (1 m.sup.2 to 125 m.sup.2), a blade speed (2.5 to 8 m/sec), a pressure (25 to 100 mb) and a temperature (90.degree. to 135.degree. C.).
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: July 9, 1996
    Assignee: Courtaulds Fibres (Holdings) Limited & Buss AG
    Inventors: Michael C. Quigley, Rainer F. Naef