Cellulosic fibers from anisotropic solutions

Details Cellulosic fibers from anisotropic solutions Cellulosic fibers from anisotropic solutions

1983-08-01

1985-02-26

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 69, 536 76, 536 82, C08B 306, C08B 320

Patent

active

045018863

ABSTRACT:
High strength, high modulus cellulose triacetate fibers are produced by spinning a 30-42% by weight solution of cellulose triacetate having an acetyl content of at least 42.5% and an inherent viscosity of at least 5 from a solvent mixture comprising trifluoroacetic acid and another solvent having a molecular weight of less than 160 in a mol ratio of 0.3-3.0 through an air gap into a coagulating bath. The fibers are optionally heat treated under tension or saponified to provide high strength high modulus regenerated cellulose fibers.

REFERENCES:
patent: 2103012 (1937-12-01), Muller et al.
patent: 3846404 (1974-11-01), Nichols
patent: 3875141 (1975-04-01), Drisch
patent: 4357389 (1982-11-01), Satoh et al.
patent: 4370168 (1983-01-01), Kamide et al.
Journal of Polymer Science, vol. 19, pp. 1449-1460, (1981), and vol. 20, pp. 1019-1028, (1982).
Kirk-Othmer, Encycl. of Chem. Tech., vol. 5, 3rd Ed., pp. 89-117.

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