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Title:
【発明の名称】粗セルロースの脱リグニン化方法
Document Type and Number:
Japanese Patent JP3325324
Kind Code:
B2
Abstract:
A process for delignifying raw cellulose which comprises a preliminary treatment for impregnating raw cellulose with a monopersulphuric acid solution, a successive filtration without washing with recycle of the filtered liquid to the first step, and a treatment, at low temperature and in alkaline solution at a pH higher than 9, of the previously impregnated raw cellulose in order to permit the reaction of the monopersulphuric acid with the lignin contained in the raw cellulose.

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Inventors:
Faust Marzolini
Giulio Carmanti
Jean Piero Sacchi
Application Number:
JP1281093A
Publication Date:
September 17, 2002
Filing Date:
January 28, 1993
Export Citation:
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Assignee:
Ausimont S.P.A.
International Classes:
D21C9/10; D21C9/16; D21C3/00; D21C1/00; D21C11/00; (IPC1-7): D21C9/16
Domestic Patent References:
JP62191589A
Attorney, Agent or Firm:
Shintaro Nogawa



 
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