公开(公告)号：US10604589B2

公开(公告)日：2020-03-31

申请号：US14650666

申请日：2013-12-13

申请人： UPM-KYMMENE CORPORATION

发明人： Taisto Tienvieri ,  Isko Kajanto ,  Tero Ojala ,  Sami Saarela ,  Markus Nuopponen ,  Timo Paakkonen ,  Tapani Vuorinen

IPC分类号： C08B15/04 ,  D21C9/00

摘要： 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.

公开(公告)号：US20150322171A1

公开(公告)日：2015-11-12

申请号：US14650666

申请日：2013-12-13

申请人： UPM-KYMMENE CORPORATION

发明人： Taisto Tienvieri ,  Isko Kajanto ,  Tero Ojala ,  Sami Saarela ,  Markus Nuopponen ,  Timo Paakkonen ,  Tapani Vuorinen

IPC分类号： C08B15/04

CPC分类号： C08B15/04 ,  D21C9/00 ,  Y10T428/298

摘要： 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.

摘要翻译： 使用杂环硝酰基作为催化剂，作为氧源的主要氧化剂和杂环硝酰基的活化剂，氧化催化纤维素。 氧化在纤维素浆的中等稠度的反应介质中进行，其中6％以上，更优选等于或高于8％，最优选在8-12％的范围内。 将反应介质通过反应介质循环回到反应器中而在反应器中混合。