Process for improved alkaline oxidative delignification of...

Details Process for improved alkaline oxidative delignification of... Process for improved alkaline oxidative delignification of...

D - Textiles, Paper

21

C

9/22

D21C 1/00 (2006.01) D21C 1/04 (2006.01)

Patent

CA 2005369

TITLE PROCESS FOR THE OXYGEN DELIGNIFICATION OF CELLULOSE PULP Abstract of the Disclosure Treatment of the pulp with sufficient nitrosating agent to provide 0.1 to 1.2 weight percent active NO(+) on a dry pulp basis at a pH of 1.7 to 4 and in oxygen environment under high intensity mixing conditions before an alkaline oxidative stage in a bleach sequence, the nitrosating agent being a compound that contributes predominantly nitrosonium ions.

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