D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
9/13
D21C 3/12 (2006.01) D21C 3/22 (2006.01)
Patent
CA 1159202
Abstract An alkaline sulfite pulping process in which the lignocellulosic material is cooked in a solution containing sodium sulfite is provided. Sodium aluminate is used as a buffering agent. As a result of this, the stability of the pH of the cook and the properties of the pulp are improved. The amount of sodium aluminate as NaOH is from 2 % to 8 % based on the dry weight of the chips.
376478
Pihlajamaki Soile
Virkola Nils-Erik
Ahlstrom (a.) Osakeyhtio
Gowling Lafleur Henderson Llp
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