Bleaching wood pulp with sodium hydrosulfite in the presence of

Details Bleaching wood pulp with sodium hydrosulfite in the presence of Bleaching wood pulp with sodium hydrosulfite in the presence of

1975-04-18

1976-06-08

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

8110, 162 83, D21C 910

Patent

active

039620301

ABSTRACT:
A process for bleaching wood pulp with sodium hydrosulfite in the presence of at least 2 weight percent of hexamethylenetetramine based upon the weight of sodium hydrosulfite.

REFERENCES:
patent: 2067928 (1937-01-01), Kern
patent: 2071304 (1937-02-01), Hirschkind
patent: 2525770 (1950-10-01), Cook et al.
patent: 2707145 (1955-04-01), Sparrow et al.
patent: 3653804 (1972-04-01), Janson et al.
patent: 3666409 (1972-05-01), Yoshikawa et al.
patent: 3923960 (1975-12-01), Leigh

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