Process and composition for bleaching cellulosic material with h

Details Process and composition for bleaching cellulosic material with h Process and composition for bleaching cellulosic material with h

1985-11-25

1988-04-26

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Bleaching

Chemical

162 73, 162 76, 162 77, 162 87, 25218721, 25218732, D21C 318, D21C 912

Patent

active

047402121

ABSTRACT:
A process and composition especially suited for bleaching wood pulp characterized by the use of hypochlorous acid in combination with chlorine dioxide and/or a nitrogen compound having the characteristic of minimizing fiber degradation and enhancing fiber brightness. The preferred composition is in an aqueous solution adjusted to an optimum pH and is used as a direct replacement for conventional compositions so as to effect substantial savings in the costs of chemicals and energy per ton of bleached pulp.

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