Process for the preparation of regenerated cellulose formed bodi

Details Process for the preparation of regenerated cellulose formed bodi Process for the preparation of regenerated cellulose formed bodi

1980-04-21

1982-02-09

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

106163R, 264196, 264197, D01F 200

Patent

active

043149596

ABSTRACT:
A process for the preparation of regenerated cellulose shaped bodies from inning dopes comprising solutions of methylol derivatives of cellulose in organic solvent selected from dimethylformamide, dimethylacetamide, dimethylsulphoxide and N-methyl-pyrrolidone is described. The cellulose derivative is coagulated from the spinning dope in a coagulating bath, the main component of which is a high-boiling alcohol capable of reacting with the free (para)formaldehyde and with the bound (para)formaldehyde of the methylol derivative to a degree varying with the temperature. It is possible to prepare filaments and yarns having excellent characteristics by starting from solutions having high CH.sub.2 O and cellulose concentrations and high MS ratios.

REFERENCES:
patent: 2933460 (1960-04-01), Richter et al.
patent: 2955907 (1960-10-01), Kolb
patent: 4022631 (1977-05-01), Turbak et al.
patent: 4086418 (1978-04-01), Turbak et al.
patent: 4173613 (1979-11-01), Rodier
patent: 4237274 (1980-12-01), Leoni et al.

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