Title:
DELIGNIFICATION OF LIGNOCELLULOSE SUBSTANCE
Document Type and Number:
Japanese Patent JPS5562289
Kind Code:
A
Abstract:
There is disclosed a process for the delignification of lignocellulosic material by treatment with an alkaline liquor in the presence of a cyclic keto compound such as anthraquinone. The lignocellulosic material in subdivided form is first impregnated with the alkaline liquor containing a suitable amount of the cyclic keto compound whereafter any excess liquor is drained. The impregnated material is then cooked by heating. The delignified products are suitable for the manufacture of paper.
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Inventors:
HARII HATSUCHINSON HORUTON
Application Number:
JP13709479A
Publication Date:
May 10, 1980
Filing Date:
October 25, 1979
Export Citation:
Assignee:
CANADIAN IND
International Classes:
D21C1/00; D21C3/22; D21C3/00; (IPC1-7): D21C3/02
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