Process for producing pulp

Details Process for producing pulp Process for producing pulp

1977-08-30

1979-07-24

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 82, 162 83, 162 90, 162 72, D21C 302

Patent

active

041621883

ABSTRACT:
A novel process for producing pulp is disclosed, by which cooking of lignocellulosic materials can be carried out advantageously in the presence of a novel cooking aid added to the cooking liquor. Representative examples of such cooking aids include maleic acid, sodium maleate, potassium maleate, maleic anhydride, fumaric acid, sodium fumarate, potassium fumarate, mesaconic acid and sodium mesaconate. Both cooking yield and quality of pulp are substantially improved. The cooking aids can be used in combination with dihydroxydihydroanthracene.

REFERENCES:
patent: 2730444 (1956-01-01), Hodge et al.
patent: 3769152 (1973-10-01), Samuelson et al.
patent: 4012280 (1977-03-01), Holton

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