Abstract
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.
Original language | English |
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Patent number | FI126847B |
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 |
Keywords
- TEMPO-mediated oxidation
- cellulose
- medium consistency
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Seppälä, J. (Manager)
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