Bleaching cellulose pulp with oxygen in the presence of formalde

Details Bleaching cellulose pulp with oxygen in the presence of formalde Bleaching cellulose pulp with oxygen in the presence of formalde

1975-07-02

1977-01-25

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Gas, vapor or mist contact

8111, 162 72, 162 77, D21C 910

Patent

active

040049671

ABSTRACT:
When bleaching wood pulp with oxygen the result can be improved if formaldehyde, methanol, ethanol, isopropanol, glycerol, sorbitol, formic acid, or acetone is added to the pulp.

REFERENCES:
patent: 2022664 (1935-12-01), Groombridge et al.
patent: 3652385 (1972-03-01), Noreus et al.
patent: 3668063 (1972-06-01), Engstrom
patent: 3703435 (1972-11-01), Schleinkofer

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