Title:
セルロースの触媒酸化法、およびセルロース製品の製造方法
Document Type and Number:
Japanese Patent JP6649884
Kind Code:
B2
Abstract:
A method for catalytic oxidation of cellulose using a heterocyclic nitroxyl radical as catalyst, main oxidant acting as oxygen source, and an activator of the heterocyclic nitroxyl radical, comprises—a preliminary activation step of the heterocyclic nitroxyl radical with hypochlorite to activated catalyst, and after the preliminary activation step, a cellulose oxidation step using the activated catalyst and hypochlorite as the main oxidant to oxidize cellulose. In the cellulose oxidation step, fibrous starting material is subjected to the oxidation to oxidize the cellulose, whereafter the oxidized fibrous raw material is disintegrated to nanofibrillar cellulose (NFC).
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Inventors:
Pakkonen, Timo
Buolinen, Tapani
Nuopponen, Marx
Buolinen, Tapani
Nuopponen, Marx
Application Number:
JP2016530564A
Publication Date:
February 19, 2020
Filing Date:
July 29, 2014
Export Citation:
Assignee:
UPM-Kymmene Corporation
International Classes:
C08B15/04
Domestic Patent References:
| JP2003512540A | ||||
| JP2002003503A | ||||
| JP2013096039A | ||||
| JP2002537503A |
Foreign References:
| WO2012168562A1 | ||||
| WO2013039070A1 | ||||
| WO2005058972A1 | ||||
| WO2009111915A1 |
Attorney, Agent or Firm:
Keiichiro Saikyo