Process for continuous xanthation and production of viscose spin

Details Process for continuous xanthation and production of viscose spin Process for continuous xanthation and production of viscose spin

1975-09-04

1977-07-19

Jacobs, Lewis T.

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

Organic compounds

Carbohydrates or derivatives

C08B 904

Patent

active

040370399

ABSTRACT:
A continuous feed of alkali cellulose (AKC) is partially xanthated, and then dissolved and further xanthated to form a viscose solution, while passing continuously through a series of connected reactors and slurry vessels, wherein slurries of carbon disulfide (CS.sub.2) and alkali metal hydroxide are maintained. The AKC feed to the system may be shredded crumbs from any standard alkali cellulose system, or shredded crumbs from a continuous sheet steeping mercerization system. A portion of the xanthate AKC (cellulose xanthate) may be recycled to the various slurry vessels or zones.

REFERENCES:
patent: 2801998 (1957-08-01), Robertson

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