Process for increasing the brightness of paper stock

Details Process for increasing the brightness of paper stock Process for increasing the brightness of paper stock

D - Textiles, Paper

21

C

D21C 9/10 (2006.01) D21C 5/02 (2006.01) D21C 9/147 (2006.01) D21C 9/16 (2006.01)

Patent

CA 2208940

A process for bleaching paper stock. In this process, an aqueous suspension of the paper stock is treated with at least one bleaching agent and pressurized in the presence of a gas which includes oxygen.

Procédé de blanchiment de pâte à papier, consistant à traiter une suspension aqueuse de pâte avec au moins un agent de blanchiment et à la traiter sous pression en présence d'un gaz renfermant de l'oxygène.

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