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.
|IPC||C08L 1/04 ,C08B 15/04 ,D21H 11/18 ,D21C 3/00,D21C 9/00|
|Publication status||Published - 14 Jun 2014|
|MoE publication type||H1 Granted patent|
- TEMPO-mediated oxidation
- medium consistency