Alkaline-peroxide-oxygen treatment of unbleached and...

Details Alkaline-peroxide-oxygen treatment of unbleached and... Alkaline-peroxide-oxygen treatment of unbleached and...

D - Textiles, Paper

21

C

9/16.5

D21C 9/16 (2006.01) D21C 9/10 (2006.01)

Patent

CA 1251903

ABSTRACT OF THE DISCLOSURE There are provided improvement relating to the delignification and/or the bleaching of a chemical pulp wherein the cellulosic material is simultaneously treated with an alkali compound, a peroxygen compounds and an oxygen gas at partial pressure in the presence of a viscosity protecting catalyst.

484110

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