Patent ID: 6814904
Filing Date: 2004-11-09
Classification: C08B,D01F

Abstract:
A process for producing formed cellulosic articles, particularly fibres and filaments, comprising:a) dissolving cellulose in an aqueous solution of N-methylmorpholine N-oxide (NMMO) to form a solution of cellulose and NMMO, and b) extruding the solution of cellulose and NMMO through an extrusion die via an air gap into a precipitation bath with precipitation of the formed articles, wherein said solution of cellulose and NMMO and/or said precipitation bath containing a tenside, characterized in that in the step b) the tenside content c of the solution of cellulose and NMMO and/or of the precipitation bath is in the range 100 ppm>c&gE;5 ppm, and the width of the air gap is in the range from 2 to 20 mm.