D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 1/02 (2006.01) D21C 1/04 (2006.01) D21C 3/04 (2006.01) D21C 3/12 (2006.01)
Patent
CA 2440789
The present invention is a method for producing pulp from fibrous lignocellulose material using a treatment step which exposes the material to oxalic acid, or oxalic acid and sodium bisulfite, prior to pulping. The pulping of the resulting product requires less energy input and provides a pulp having enhanced physical properties as compared to untreated materials.
La présente invention concerne un procédé de production de pâte à papier à partir de matière lignocellulosique fibreuse au moyen d'une étape de traitement qui expose la matière à de l'acide oxalique, ou à de l'acide oxalique et du bisulfite de sodium, avant réduction en pâte. La réduction en pâte du produit obtenu demande moins d'énergie d'alimentation et permet d'obtenir une pâte à papier possédant des propriétés physiques améliorées par rapport à des matières non traitées.
Akhtar Masood
Black Cory C.
Horn Eric G.
Houtman Carl J.
Kirk T. Kent
Biopulping International
Gowling Lafleur Henderson Llp
United States Of America As Represented By The Secretary Of Agriculture
Wisconsin Alumni Research Foundation
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