After 10 years of "silence" the patents on the Tencel process begin to emerge.
United States Patent | 5,354,371 |
| Wykes , et al. | October 11, 1994 |
Transport of solutions of cellulose through pipes
AbstractA method for transporting a solution of cellulose in aqueous N-methylmorpholine N-oxide through a pipe, the temperature in degrees centigrade of said solution in the center of said pipe being controlled at 1000/(X+0.98 x.sqroot.D) and/or the temperature of said solution at the interior wall of said pipe being controlled at 1000/(Y+1.15 x.sqroot.D) where D represents the internal diameter of the pipe in inches, X represents a value equal to or greater than 5.0, and Y represents a value equal to or greater than 5.4.
| Inventors: | Wykes; Katharine A. (Wellesbourne, GB), Quigley; Michael C. (Meriden, GB) |
| Assignee: | Courtaulds Fibres (Holdings) Limited (London, GB2) |
| Appl. No.: | 08/069,184 |
| Filed: | May 28, 1993
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