Process for producing regenerated cellulosic articles

Details Process for producing regenerated cellulosic articles Process for producing regenerated cellulosic articles

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, 536 35, 536 57, C08B 1600

Patent

active

040769321

ABSTRACT:
Regenerated cellulosic articles are produced by nitrosating and dissolving cellulose in a dialkylacylamide solvent, such as dimethylformamide, and regenerating the dissolved cellulose by passing into a coagulant bath. The coagulant comprises water or a 1 to 4 carbon atom aliphatic monohydric alcohol and a soluble reactive base, the latter in an amount ranging from 6% to 25% by weight of the regenerant. The process produces regenerated cellulose products of improved resistance to alkaline solubility.

REFERENCES:
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
Venkateswaran et al., Journal of Applied Polymer Science, vol. 18, 1974, pp. 133-142.

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