Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Simultaneous mechanical defibration and chemical treatment
Patent
1995-05-19
1997-03-04
Alvo, Steven
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Simultaneous mechanical defibration and chemical treatment
162 83, 162 90, D21B 116, D21C 912
Patent
active
056075472
ABSTRACT:
A method for eliminating the formation of sulfur dioxide in a refiner bleaching process is disclosed wherein a selected amount of a carbonate is added to the refiner contents at approximately the same time that sodium dithionite is added.
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Fairbank Martin G.
Nye Jeffrey
Alvo Steven
Hoechst Celanese Corporation
Miano Rosemary
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