Additives for ozone bleaching

Details Additives for ozone bleaching Additives for ozone bleaching

1979-01-11

1980-10-21

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Gas, vapor or mist contact

162 77, D21C 910

Patent

active

042292522

ABSTRACT:
In bleaching wood pulp with ozone a small amount of alcohol enhances the bleaching. The effect appears to be most pronounced with aliphatic alcohols having the hydroxyl group on an end carbon. The concentration of alcohol is in the range of 0.0000001 to 0.03 moles per liter of the liquid phase.

REFERENCES:
patent: 4004967 (1977-01-01), Swan et al.
Empire State Paper Research Institute, Research Report No. 54 (10-1-71); Supplement to Research Report No. 53 (Apr. 12-71), Reserch Report No. 56 (May 1, 1972).
Kamashima et al., Japan Tappi 30, No. 7, 381-391 (7/76).
Kamashima et al., Japan Tappi 31, No. 9, 664-672 (9/77).
Kamishima et al., Japan Tappi 31, No. 10, 699-706 10-77.

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