Process for the full bleaching of pulp

Details Process for the full bleaching of pulp Process for the full bleaching of pulp

D - Textiles, Paper

21

C

8/80

D21C 9/14 (2006.01) D21C 9/10 (2006.01)

Patent

CA 1122358

ABSTRACT OF THE DISCLOSURE The present invention provides a multistage process for the full bleaching of pulp having at least three-stages in which the pulp, when required after a pre-treatment with at least one of magnesium salts and organic complexing agents, is treated with a per compound in a first stage, with chlorite in a second stage and bleached with a per compound in a third stage.

335412

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