Process for producing a regenerated shaped cellulosic fiber

Details Process for producing a regenerated shaped cellulosic fiber Process for producing a regenerated shaped cellulosic fiber

1976-02-27

1978-02-28

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

264183, 264187, 264188, 428397, 536 35, 536 57, C08B 1600

Patent

active

040769330

ABSTRACT:
Shaped cellulosic fibers are produced by nitrosating and dissolving a cellulosic material in an aprotic solvent selected from the group consisting of a dialkylacylamide and dimethylsulfoxide and regenerating the dissolved cellulose by contacting the cellulose solution with a regenerant. The regenerant is butanol, pentanol or benzyl alcohol where the solvent is a dialkylacylamide and propanol, butanol or benzyl alcohol where the solvent is dimethylsulfoxide. The fibers have a generally crenulated shape as regenerated and require no special spinnerette designs nor special spinning conditions.

REFERENCES:
patent: 1773969 (1930-08-01), Dreyfus et al.
patent: 2472591 (1949-06-01), Kenyon et al.
patent: 3087775 (1963-04-01), Reinhardt et al.
patent: 3236669 (1966-02-01), Williams
patent: 3702843 (1972-11-01), Schweiger
Chemical Engineering, July 19, 1965, p. 43.
Journal of Applied Polymer Science, vol. 18, 1974, pp. 133-142, article by Venkateswaran et al.

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