Pulping process

Details Pulping process Pulping process

D - Textiles, Paper

21

C

9/16

D21C 3/02 (2006.01)

Patent

CA 1107917

ABSTRACT OF THE DISCLOSURE A process for the delignification of lignocellulosic material wherein the lignocellulosic material is cooked with an alkaline pulping liquor containing 0.001 to 10% by weight of a hydroquinone selected from the group consisting of 9,10-anthra- hydroquinone, phenanthrahydroquinone, the alkyl-, alkoxy-, hydroxy-, amino-, halo- or carboxy-derivatives of said hydro- quinones and the tautomeric forms of said hydroquinones and mixtures thereof.

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