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    A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE
    1.
    发明公开
    A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON OXIDIERTER ODER MIKROFIBRILLIERTER CELLULOSE

    公开(公告)号：EP3022357A4

    公开(公告)日：2017-03-15

    申请号：EP14825900

    申请日：2014-07-11

    Applicant: STORA ENSO OYJ

    Inventor： HILTUNEN JAAKKO ,  HEISKANEN ISTO ,  SAXELL HEIDI ,  KAHELIN JUKKA ,  SAHARINEN ERKKI

    IPC: D21H11/20 ,  C08B15/02 ,  C08B15/04 ,  C08B15/08 ,  C08L1/02 ,  D21C9/00 ,  D21H11/18

    CPC classification number: D21H11/20 ,  C08B15/02 ,  D21C9/00 ,  D21C9/004 ,  D21C9/005 ,  D21H11/18

    Abstract: The invention relates to a method of producing oxidized or microfibrillated cellulose (MFC). According to the invention there is provided an aqueous pulp suspension with a consistency of at least 15%, and at least one oxidant is added to the suspension to oxidize cellulosic hydroxyl groups in the suspension under mechanical mixing or shearing. The oxidized suspension, washed and diluted to a lower consistency, is subjected to homogenization to yield gel-like MFC. Alkali hypochlorite may be used as oxidant, and preferred mediating oxidation catalysts are AZADO and TEMPO. Alkali bromide may be used as a cocatalyst. The MFC product, which as a suspension has an increased viscosity, is suitable as a means of regulating viscosity or for production of films and composites.

    Abstract translation: 本发明涉及一种生产氧化或微纤化纤维素（MFC）的方法。 根据本发明，提供了至少15％的稠度的水性纸浆悬浮液，并且在悬浮液中加入至少一种氧化剂以在机械混合或剪切下氧化悬浮液中的纤维素羟基。 将经过洗涤并稀释至较低浓度的氧化悬浮液进行均化以产生凝胶状MFC。 碱性次氯酸盐可以用作氧化剂，优选的介导氧化催化剂是AZADO和TEMPO。 碱性溴化物可用作助催化剂。 作为悬浮液具有增加的粘度的MFC产品适合作为调节粘度或用于生产膜和复合材料的手段。

    TREATMENT OF FIBRES TO ENDURE PROCESSING
    3.
    发明公开
    TREATMENT OF FIBRES TO ENDURE PROCESSING 有权
    百德冯·弗兰德·弗雷尔·赫尔赫特VERARBEITUNGSBESTÄNDIGKEIT

    公开(公告)号：EP2408822A4

    公开(公告)日：2013-11-27

    申请号：EP10753173

    申请日：2010-03-18

    Applicant: STORA ENSO OYJ

    Inventor： RAESAENEN JARI ,  PENTTINEN TAPANI ,  HARLIN ALI ,  HILTUNEN JAAKKO ,  WIKBERG HANNE ,  TAMMELIN TEKLA

    IPC: C08B3/14 ,  C08B3/20 ,  D21H17/14 ,  D21H21/14

    CPC classification number: C08B3/20 ,  C08B3/14 ,  D21H11/20 ,  D21H17/14 ,  D21H21/14 ,  D21H27/10

    Abstract: The invention relates to a method of treating chemical pulp fibers by a polymerizing hydroxy acid, the fibers thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibers in the presence of a catalyst, forming ester bonds. The following units of the same hydroxy acid are oligomerized and/or polymerized to these grafted acid residues. The fibers thus treated and the products refined thereof endure better processing stages that include drawing and stretching than untreated fibers.

    Abstract translation: 本发明涉及一种通过聚合羟基酸处理化学纸浆纤维的方法，由此获得的纤维和从其中精制的产品。 在该方法中，羟基酸在催化剂存在下与纤维的反应性基团反应，形成酯键。 以下单元的相同羟基酸被低聚和/或聚合到这些接枝的酸残基上。 如此处理的纤维和其精制产品具有比未处理的纤维更好的加工阶段，包括拉伸和拉伸。

    A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE
    6.
    发明专利
    A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE 未知

    公开(公告)号：CA2918182A1

    公开(公告)日：2015-01-22

    申请号：CA2918182

    申请日：2014-07-11

    Applicant: STORA ENSO OYJ

    Inventor： HILTUNEN JAAKKO ,  HEISKANEN ISTO ,  SAXELL HEIDI ,  KAHELIN JUKKA ,  SAHARINEN ERKKI

    IPC: D21H11/20 ,  C08B15/02 ,  C08B15/04 ,  C08B15/08 ,  C08L1/02 ,  D21C9/00 ,  D21H11/18

    Abstract: The invention relates to a method of producing oxidized or microfibrillated cellulose (MFC). According to the invention there is provided an aqueous pulp suspension with a consistency of at least 15 %, and at least one oxidant is added to the suspension to oxidize cellulosic hydroxyl groups in the suspension under mechanical mixing or shearing. The oxidized suspension, washed and diluted to a lower consistency, is subjected to homogenization to yield gel-like MFC. Alkali hypochlorite may be used as oxidant, and preferred mediating oxidation catalysts are AZADO and TEMPO. Alkali bromide may be used as a cocatalyst. The MFC product, which as a suspension has an increased viscosity, is suitable as a means of regulating viscosity or for production of films and composites.

    A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE
    9.
    发明专利
    A METHOD OF PRODUCING OXIDIZED OR MICROFIBRILLATED CELLULOSE 未知

    公开(公告)号：CA2918182C

    公开(公告)日：2021-11-09

    申请号：CA2918182

    申请日：2014-07-11

    Applicant: STORA ENSO OYJ

    Inventor： HILTUNEN JAAKKO ,  HEISKANEN ISTO ,  SAXELL HEIDI ,  KAHELIN JUKKA ,  SAHARINEN ERKKI

    IPC: D21H11/20 ,  C08B15/02 ,  C08B15/04 ,  C08B15/08 ,  C08L1/02 ,  D21C9/00 ,  D21H11/18

    Abstract: The invention relates to a method of producing oxidized or microfibrillated cellulose (MFC). According to the invention there is provided an aqueous pulp suspension with a consistency of at least 15 %, and at least one oxidant is added to the suspension to oxidize cellulosic hydroxyl groups in the suspension under mechanical mixing or shearing. The oxidized suspension, washed and diluted to a lower consistency, is subjected to homogenization to yield gel-like MFC. Alkali hypochlorite may be used as oxidant, and preferred mediating oxidation catalysts are AZADO and TEMPO. Alkali bromide may be used as a cocatalyst. The MFC product, which as a suspension has an increased viscosity, is suitable as a means of regulating viscosity or for production of films and composites.

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