Pulping process

Details Pulping process Pulping process

1988-02-22

1989-07-25

Lacey, David L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 78, 162 80, 162 90, 162 91, 162 98, 162 99, D21C 320

Patent

active

048510823

ABSTRACT:
A process for the production of a pulp from bast fibers, which includes reacting a mixture of the bast fibers and an aqueous digestion liquid at a temperature of 60.degree.-130.degree. C. The digestion liquid includes (a) hydrogen peroxide or a compound capable of generating hydrogen peroxide in the presence of water, (b) an alkali metal carbonate, and (c) an oxalate.

REFERENCES:
patent: 1866917 (1932-07-01), Worden
patent: 2457856 (1949-01-01), Zeehuisen
patent: 2883826 (1959-04-01), Smith et al.
patent: 4106979 (1978-08-01), Ruffini et al.

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