Process for forming shaped cellulosic product

Details Process for forming shaped cellulosic product Process for forming shaped cellulosic product

1981-05-01

1982-10-05

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264203, 264207, D01F 200

Patent

active

043527701

ABSTRACT:
Cellulose is activated by penetration of the cellulose with a polar medium and mixed at a temperature at which no significant degradation occurs with an amide selected from the group consisting of dimethylacetamide, 1-methyl-2-pyrrolidinone and mixtures thereof and from 3 to 15% by weight of lithium chloride. The cellulose is then dissolved in the amide and lithium chloride in the substantial absence of any polar medium other than the amide. Shaped cellulosic products may be formed by reconstituting the cellulose in fiber, sheet or other form.

REFERENCES:
patent: 4029727 (1977-06-01), Austin et al.
patent: 4062921 (1977-12-01), Austin
patent: 4076933 (1978-02-01), Turbak et al.
patent: 4098615 (1978-07-01), Cummisford et al.
patent: 4098859 (1978-07-01), Cummisford et al.
patent: 4183997 (1980-01-01), Stofko
patent: 4278790 (1981-07-01), McCormick

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