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公开(公告)号：CA2755498C
公开(公告)日：2017-01-17
申请号：CA2755498
申请日：2010-03-18
Applicant: STORA ENSO OYJ
Inventor： RAESAENEN JARI , PENTTINEN TAPANI , HARLIN ALI , HILTUNEN JAAKKO , WIKBERG HANNE , TAMMELIN TEKLA
Abstract: The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres 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 fibres thus treated and the products refined thereof endure better processinging stages that include drawing and stretching than untreated fibres.
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公开(公告)号：CA2755498A1
公开(公告)日：2010-09-23
申请号：CA2755498
申请日：2010-03-18
Applicant: STORA ENSO OYJ
Inventor： RAESAENEN JARI , PENTTINEN TAPANI , HARLIN ALI , HILTUNEN JAAKKO , WIKBERG HANNE , TAMMELIN TEKLA
Abstract: The invention relates to a method of treating chemical pulp fibres by a polymerizing hydroxy acid, the fibres thus obtained and the products refined from them. In the method, the hydroxy acid reacts with the reactive groups of the fibres 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 fibres thus treated and the products refined thereof endure better processinging stages that include drawing and stretching than untreated fibres.
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公开(公告)号：FI126458B
公开(公告)日：2016-12-15
申请号：FI20095291
申请日：2009-03-20
Applicant: STORA ENSO OYJ
Inventor： RÄSÄNEN JARI , PENTTINEN TAPANI , HARLIN ALI , HILTUNEN JAAKKO , WIKBERG HANNE , TAMMELIN TEKLA
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公开(公告)号：FI125818B
公开(公告)日：2016-02-29
申请号：FI20095634
申请日：2009-06-08
Applicant: UPM KYMMENE CORP , STORA ENSO OYJ
Inventor： HENTZE HANS-PETER , SIEVÃ NEN JENNI , KETTLE JOHN , KULACHENKO ARTEM , KORPELA ANTTI , KETOJA JUKKA , HELLÃ N ERKKI , HJELT TUOMO , HILTUNEN JAAKKO , TURUNEN EILA , SNECK ASKO
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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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Patent Agency Ranking
公开(公告)号：FI121890B
公开(公告)日：2011-05-31
申请号：FI20095635
申请日：2009-06-08
Applicant: UPM KYMMENE CORP , STORA ENSO OYJ
Inventor： HENTZE HANS-PETER , SIEVAENEN JENNI , KETTLE JOHN , KULACHENKO ARTEM , KORPELA ANTTI , KETOJA JUKKA , HELLEN ERKKI , HJELT TUOMO , HILTUNEN JAAKKO , TURUNEN EILA , SNECK ASKO
Abstract: The invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension and drying the web in order to form paper or board. According to the invention, the water content of the suspension at the time of beginning of the drying is 50% or less by weight of liquids so as to form a paper or board having an average pore size between 200 and 400 nm. By means of the invention, very opaque paper, for example for printing applications, can be manufactured with low energy consumption.
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公开(公告)号：FI20095291A
公开(公告)日：2010-09-21
申请号：FI20095291
申请日：2009-03-20
Applicant: STORA ENSO OYJ
Inventor： RAESAENEN JARI , PENTTINEN TAPANI , HARLIN ALI , HILTUNEN JAAKKO , WIKBERG HANNE , TAMMELIN TEKLA
IPC: C08B20100101
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.
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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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公开(公告)号：CA2764223A1
公开(公告)日：2010-12-16
申请号：CA2764223
申请日：2010-06-07
Applicant: UPM KYMMENE CORP , STORA ENSO OYJ
Inventor： HENTZE HANS-PETER , SIEVANEN JENNI , KETTLE JOHN , KULACHENKO ARTEM , KORPELA ANTTI , KETOJA JUKKA , HELLEN ERKKI , HJELT TUOMO , HILTUNEN JAAKKO , TURUNEN EILA , SNECK ASKO
Abstract: The invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension, and drying the web in order to form paper or board. According to the invention the water content of the suspension from which the web is formed is 50 % or less by weight of liquids. By means of the invention, energy consumption of paper manufacturing can be significantly reduced.
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