Method for catalytic oxidation of cellulose and method for making a cellulose product

Cellulose is oxidized catalytically using a heterocyclic nitroxyl radical as catalyst, main oxidant acting as oxygen source, and an activator of the heterocyclic nitroxyl radical. The oxidation is performed in a reaction medium which is at medium consistency of cellulosic pulp, which is above 6%, mo...

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Bibliographic Details
Main Authors Kajanto, Isko, Paakkonen, Timo, Ojala, Tero, Vuorinen, Tapani, Saarela, Sami, Tienvieri, Taisto, Nuopponen, Markus
Format Patent
LanguageEnglish
Published 31.03.2020
Subjects
APPARATUS THEREFOR
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PAPER-MAKING
POLYSACCHARIDES
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Cellulose is oxidized catalytically using a heterocyclic nitroxyl radical as catalyst, main oxidant acting as oxygen source, and an activator of the heterocyclic nitroxyl radical. The oxidation is performed in a reaction medium which is at medium consistency of cellulosic pulp, which is above 6%, more preferably equal to or higher than 8%, and most preferably in the range of 8-12%. The reaction medium is mixed in a reactor through circulation of the reaction medium back to the reactor.
Bibliography:Application Number: US201314650666