Title:
【発明の名称】セルロ-ス性物質の脱リグニン法
Document Type and Number:
Japanese Patent JPH0742669
Kind Code:
B2
Abstract:
1. Process for the delignification of cellulosic materials characterized in that in a first step the cellulosic materials are treated with an acid under regulated conditions to effect a decontamination of the cellulosic material of the metals which they contain, in a second step the cellulosic materials of the first step are treated with hydrogen peroxyde under alcaline conditions and in a third step the cellulosic materials of the second step are boiled in the presence of sulphite or sulphate.
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Inventors:
Joseph S. Graz crane
Application Number:
JP18326186A
Publication Date:
May 10, 1995
Filing Date:
August 04, 1986
Export Citation:
Assignee:
Interox (Societe Anonymous)
International Classes:
D21C1/04; D21C1/08; D21C3/02; D21C3/22; D21C1/00; D21C3/26; (IPC1-7): D21C1/04; D21C1/08; D21C3/02; D21C3/22
Domestic Patent References:
| JP6297992A |
Attorney, Agent or Firm:
Akira Asamura (2 outside)
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