Use of polyacrylic acid in pulp bleaching processes to preserve

Details Use of polyacrylic acid in pulp bleaching processes to preserve Use of polyacrylic acid in pulp bleaching processes to preserve

1979-10-18

1981-03-10

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 76, 162 87, D21C 912

Patent

active

042552338

ABSTRACT:
Improved pulp strength and brightness of chemically produced pulp can be obtained by treating the pulp with the addition of 0.05--0.5% based on the weight of the dry fiber of polyacrylic acid and/or its water-soluble salts in the chlorination bleaching stages.

REFERENCES:
patent: 3539445 (1970-11-01), Crossland
patent: 3878037 (1975-04-01), Honsen et al.
patent: 4096029 (1978-06-01), Mills

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