Method of pulping with sulfite liquor containing formic acid est

Details Method of pulping with sulfite liquor containing formic acid est Method of pulping with sulfite liquor containing formic acid est

1977-01-17

1978-06-13

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 83, D21C 304, D21C 306, D21C 320

Patent

active

040947351

ABSTRACT:
In the sulfite pulping, the yield of pulp is increased, if at least one of a selected group of formic acid esters is added to the cooking liquid before the impregnation of the wood.

REFERENCES:
patent: 2054854 (1936-09-01), Dreyfus
patent: 2070585 (1937-02-01), Dreyfus
patent: 2645633 (1953-07-01), Richmond et al.
patent: 2743179 (1956-04-01), Corbin et al.
patent: 3296065 (1967-01-01), O'Brien et al.
patent: 3560331 (1971-02-01), Beclik

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