D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
D21C 1/10 (2006.01) D21C 3/00 (2006.01) D21C 3/02 (2006.01) D21C 3/04 (2006.01) D21C 3/20 (2006.01) D21C 3/22 (2006.01) D21C 3/26 (2006.01) D21C 9/10 (2006.01)
Patent
CA 2332897
Disclosed is a method for delignifying lignocellulosic materials by first treating the material with an alkaline solution in the presence or absence of anthraquinone, and then exposing the material to a polyoxometalate. Inclusion of the alkaline pretreatment step allows delignification to take place at high efficiency and affords high residue yields and viscosities.
Cette invention a trait à un procédé de délignification de substances ligno-cellulosiques consistant à traiter d'abord la substance à l'aide d'une solution alcaline en présence d'anthraquinone ou en l'absence de celle-ci, puis à soumettre cette substance à l'action d'un polyoxométalate. Le traitement préalable par solution alcaline, qui rend la délignification des plus efficace, permet d'obtenir des quantités importantes de produits secondaires et de viscosités.
Atalla Rajai H.
Springer Edward L.
Weinstock Ira A.
Atalla Rajai H.
Borden Ladner Gervais Llp
Emory University
Springer Edward L.
The United States Of America Represented By The Secretary Of Agricultur E.
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