PEROXIDE BLEACHING OF CELLULOSE PULP

A method of controlling viscosity in peroxide bleaching of a cellulose pulp, comprising treating the cellulose pulp with disodium 3,3'-((2-ethylhexyl)azanediyl)dipropionate as a chelating agent to chelate metals present in the pulp; peroxide bleaching the cellulose pulp in at least one stage at...

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Bibliographic Details
Main Authors ROUSU, Päivi, ROUHIAINEN, Maija, PELTOLA, Sirpa
Format Patent
LanguageEnglish
French
German
Published 08.02.2023
Subjects
APPARATUS THEREFOR
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
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Summary:A method of controlling viscosity in peroxide bleaching of a cellulose pulp, comprising treating the cellulose pulp with disodium 3,3'-((2-ethylhexyl)azanediyl)dipropionate as a chelating agent to chelate metals present in the pulp; peroxide bleaching the cellulose pulp in at least one stage at a pH of about 9.5 to about 13.
Bibliography:Application Number: EP20210721966