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

1979-07-25

1981-09-15

Lieberman, Allan

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

106168, 106169, 106186, C09J 308, D01F 228

Patent

active

042897238

ABSTRACT:
A process for the preparation of regenerated cellulose formed bodies from lutions of cellulose derivatives in organic solvents is disclosed. The cellulose derivatives is firstly precipitated in a coagulating bath constituted of a cellulose non-solvent, non-regenerating organic liquid, then the coagulated body is drawn in subsequent baths and the cellulose is regenerated. The drawing and the regeneration occur, at least in part, concurrently.

REFERENCES:
patent: 4022631 (1977-05-01), Turbak et al.
patent: 4129640 (1978-12-01), Rodier

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