Bleaching of cellulosic pulp fibers with chlorine dioxide in the

Details Bleaching of cellulosic pulp fibers with chlorine dioxide in the Bleaching of cellulosic pulp fibers with chlorine dioxide in the

1975-08-29

1977-08-02

Corbin, Arthur L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

8108A, 162 87, D21C 914

Patent

active

040393747

ABSTRACT:
Cellulosic pulp fibers are bleached with chlorine dioxide in the presence of a vanadium compound containing vanadium in the +4 or +5 oxidation state so as to attain a final pH of less than about 3.0 whereby brightness reversion of the resultant bleached pulp fibers is inhibited.

REFERENCES:
patent: 2166330 (1939-07-01), Vincent
patent: 2706673 (1955-04-01), Burling et al.
patent: 2938826 (1960-05-01), Marpillero
patent: 2975169 (1961-03-01), Cranford et al.
patent: 3433702 (1969-03-01), Jack et al.
patent: 3501374 (1970-03-01), Jack et al.
Pulp Bleaching with Sodium Chlorate, Rapson et al., TAPPI, vol. 42, No. 8, 8-1959, pp. 642-649, 162-187.

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