Bleaching process for the production of high bright pulps

Details Bleaching process for the production of high bright pulps Bleaching process for the production of high bright pulps

D - Textiles, Paper

21

C

8/78, 8/81, 8/82

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

Patent

CA 1340348

A process for the bleaching of mechanical and chemimechanical pulps which includes the steps of treating in a first stage the pulp with a reducing agent and subsequently treating the same pulp with a peroxygen compound in a second stage followed by a subsequent treatment with a peroxygen compound in a third stage.

594763

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