Method for the manufacture of solvent-spun cellulose fibre invol

Details Method for the manufacture of solvent-spun cellulose fibre invol Method for the manufacture of solvent-spun cellulose fibre invol

1994-05-23

1995-03-28

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

264555, C09D10102, C08L 102

Patent

active

054013046

ABSTRACT:
In a process for making solvent-spun cellulose fibre, cellulose is dissolved in aqueous N-methylmorpholine N-oxide to form a solution, said solution is passed through at least one pipe, the temperature in degrees Centigrade of said solution in the center of said pipe being controlled at 1000/(X+0.98.sqroot.D) and/or the temperature of said solution at the interior wall of said pipe being controlled at 1000/(Y+1.15.sqroot.D) where D represents the internal diameter of said 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, and said solution is subsequently extruded through a die to form filaments which are coagulated, washed with water to remove said solvent and then dried, thereby forming said solvent-spun cellulose fibre.

REFERENCES:
patent: 4416698 (1983-11-01), McCorsley, III
patent: 4426228 (1984-01-01), Brandner et al.

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