Apparatus for continuous xanthation and production of viscose sp

Details Apparatus for continuous xanthation and production of viscose sp Apparatus for continuous xanthation and production of viscose sp

1977-02-16

1979-06-19

Tayman, Jr., James H.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

With means applying electromagnetic wave energy or...

536 60, 536 61, 422226, 422234, B01J 100

Patent

active

041586980

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, to 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: 1842688 (1932-01-01), Richter
patent: 2338196 (1944-01-01), Nash
patent: 2762795 (1956-09-01), Schlosser et al.
patent: 3836336 (1974-09-01), Yasui et al.

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