Title: Delignification of lignocellulosic material with an alkaline liquor in the presence of a cyclic keto compound

Abstract: Delignification of lignocellulosic material by treatment with an alkaline liquor in the presence of a cyclic keto compound such as anthraquinone.

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Inventors: Holton, Harry Hutchinson (Beloeil, CA, US)

Application Number: 718980
Filing Date: 1976-08-30
Publication_date: 1977-03-15
Assignee: Canadian Industries, Ltd. (Montreal, CA)
Primary Class(es): 162/65 8/111, 162/72, 162/82, 162/90
Other Classes:
US Patent Ref:

3888727

Jun, 1975

Kenig

162/65.

Other Refs:
Primary Examiner: Corbin, Arthur L.
Assistant Examiner:
Attorney: Drouin; Guy