EXTRACTION OF FIBROUS CELLULOSIC MATERIAL WITH AMMONIA FOLLOWING TREATMENT WITH CHLORINE,CHLORINE DIOXIDE OR OTHER REAGENTS
United States Patent 3472731

Inventors:
Liebergott, Norman
Yorston, Frederic H.
Publication Date:
10/14/1969
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Assignee:
Pulp, Paper Res Inst
Primary Class:
162/63
Other Classes:
162/89, 162/90, 162/70, 8/107
International Classes:
D21C9/10; D21C1/08; D21C3/02
Foreign References:
GB175330A
GB321282A
GB601643A




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