Production of pulp slurries employing isatoic anhydride

Details Production of pulp slurries employing isatoic anhydride Production of pulp slurries employing isatoic anhydride

1977-06-27

1978-06-06

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Non-fiber additive

D21D 300

Patent

active

040935094

ABSTRACT:
An improvement in producing aqueous slurries of wool pulp made by the Stora process is disclosed. The improvement consists of adding to the slurry from 1 to 5 percent of isatoic anhydride, based upon the weight of the pulp. It has been found that the properties of paper made from the pulp, without beating, are improved, and that the time required for beating the pulp to a given degree of freeness is shortened as a result of the presence of the isatoic anhydride in the slurry.

REFERENCES:
patent: 1567731 (1925-12-01), Gunther
patent: 2150968 (1939-03-01), Guenther et al.
patent: 2926063 (1960-02-01), Reeves et al.

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