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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
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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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
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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Patent Agency Ranking3.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
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。
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公开(公告)号：AU2014291934A1
公开(公告)日：2016-02-11
申请号：AU2014291934
申请日：2014-07-11
Applicant: STORA ENSO OYJ
Inventor： HILTUNEN JAAKKO , HEISKANEN ISTO , SAXELL HEIDI , KAHELIN JUKKA , SAHARINEN ERKKI
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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公开(公告)号：SE2330302A1
公开(公告)日：2024-12-29
申请号：SE2330302
申请日：2023-06-28
Applicant: STORA ENSO OYJ
Inventor： KAVAKKA JARI , KAHELIN JUKKA
Abstract: The present invention is directed to a process for preparing a delignified and densified wood product. The wood is delignified in the form of veneers, using process conditions corresponding to the Kraft process. The wood veneers are subjected to a pre-hydrolysis treatment before the process steps corresponding to the Kraft process. The present invention also relates to a delignified and densified wood product produced using said process. The delignified and densified wood product according to the present invention has particularly advantageous strength properties.
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公开(公告)号：NZ715965A
公开(公告)日：2020-07-31
申请号：NZ71596514
申请日：2014-07-11
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , SAXELL HEIDI , HILTUNEN JAAKKO , KAHELIN JUKKA , SAHARINEN ERKKI
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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公开(公告)号：AU2014291934B2
公开(公告)日：2018-03-22
申请号：AU2014291934
申请日：2014-07-11
Applicant: STORA ENSO OYJ
Inventor： HILTUNEN JAAKKO , HEISKANEN ISTO , SAXELL HEIDI , KAHELIN JUKKA , SAHARINEN ERKKI
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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