Patents Assigned to Courtaulds (Holding) Limited
  • Formation of a cellulose-based premix
    Patent number: 5413631
    Abstract: A method is disclosed of forming a premix which is suitable for conversion into a cellulosic dope which can be used to produce cellulosic products. The method involves introducing into a mixing chamber predetermined quantities of shredded cellulosic material and a solution of amine oxide at an elevated temperature and stirring the mixture for a period of time by rotating mixer blades within the mixing chamber at a speed of between 40 and 80 r.p.m..
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: May 9, 1995
    Assignee: Courtaulds (Holding) Limited
    Inventors: Gary E. G. Gray, Michael C. Quigley