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

• Main Authors: Kajanto, Isko, Paakkonen, Timo, Ojala, Tero, Vuorinen, Tapani, Saarela, Sami, Tienvieri, Taisto, Nuopponen, Markus
• Format: Patent
• Language: English
• 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

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...