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公开(公告)号：PL2941442T3
公开(公告)日：2018-01-31
申请号：PL13870221
申请日：2013-12-30
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , KASTINEN HENRI , KAUPPI ANNA , KANKKUNEN JUKKA , AXRUP LARS , LAND HENSDAL CECILIA , SAXELL HEIDI , BACKFOLK KAJ
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公开(公告)号：AU2013245244B2
公开(公告)日：2017-09-14
申请号：AU2013245244
申请日：2013-04-04
Applicant: STORA ENSO OYJ
Inventor： SAXELL HEIDI , HEISKANEN ISTO , AXRUP LARS , LAND HENSDAL CECILIA , JOKELA VEIKKO
Abstract: The present invention provides a method for production of cellulose ethers in a high solids process substantially without use of organic solvents as reaction and/or washing medium. In the method of the invention the first alkalization step is carried out by using high solids content cellulose pulp and solid sodium hydroxide. This is followed by an etherification step where the solids content is preferably further increased and the use of solid etherification reactant is preferred. As no organic solvents are used as reaction media the invented method enables production of cellulose ethers directly from never dried pulp with significant savings in energy and investment costs. The method is especially suitable for the production of carboxymethyl cellulose sodium salt (CMC) with low degree of substitution (DS
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公开(公告)号：CA2953463A1
公开(公告)日：2015-12-30
申请号：CA2953463
申请日：2015-06-23
Applicant: STORA ENSO OYJ
Inventor： SAXELL HEIDI , RANTAMAKI PAULA , EKMAN KALLE
Abstract: The present invention relates to a method for manufacturing cellulose carbamate which method comprises the following steps: providing a never-dried pulp, adding urea and mixing said pulp with said urea, mechanically treating said mixture, drying the mixture, and heating the relatively dry mixture thus providing a cellulose carbamate. The present invention also relates to a cellulose carbamate obtainable by said method, use of said cellulose carbamate and a dope comprising said cellulose carbamate.
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公开(公告)号：CA2869287A1
公开(公告)日：2013-10-10
申请号：CA2869287
申请日：2013-04-04
Applicant: STORA ENSO OYJ
Inventor： SAXELL HEIDI , HEISKANEN ISTO , AXRUP LARS , LAND HENSDAL CECILIA , JOKELA VEIKKO
Abstract: The present invention provides a method for production of cellulose ethers in a high solids process substantially without use of organic solvents as reaction and/or washing medium. In the method of the invention the first alkalization step is carried out by using high solids content cellulose pulp and solid sodium hydroxide. This is followed by an etherification step where the solids content is preferably further increased and the use of solid etherification reactant is preferred. As no organic solvents are used as reaction media the invented method enables production of cellulose ethers directly from never dried pulp with significant savings in energy and investment costs. The method is especially suitable for the production of carboxymethyl cellulose sodium salt (CMC) with low degree of substitution (DS
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35.发明专利
公开(公告)号：PL2917402T5
公开(公告)日：2022-10-03
申请号：PL13853320
申请日：2013-11-06
Applicant: STORA ENSO OYJ
Inventor： AXRUP LARS , SAXELL HEIDI , JOKELA VEIKKO , KASTINEN HENRI , KAUPPI ANNA , BACKFOLK KAJ , RUOHONIEMI NINA , LAITINEN RISTO , HEISKANEN ISTO , LAUKALA TEIJA
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Patent Agency Ranking36.发明专利
公开(公告)号：CA2881332C
公开(公告)日：2022-06-21
申请号：CA2881332
申请日：2013-08-16
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , LAND HENSDAL CECILIA , AXRUP LARS , SAXELL HEIDI
Abstract: The invention concerns a method for the production of highly refined or micro- fibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by me- chanical means to obtain the final product. The invention further concerns dried cellulosic pulp as an intermediate product of the method, having an aver- age fibre length of at least 0.4 mm, while less than 50 % of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.
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公开(公告)号：BR112014024931B1
公开(公告)日：2021-03-30
申请号：BR112014024931
申请日：2013-04-04
Applicant: STORA ENSO OYJ
Inventor： AXRUP LARS , HEISKANEN ISTO , JOKELA VEIKKO , LAND HENSDAL CECILIA , SAXELL HEIDI
Abstract: método para a preparação de éteres de celulose com um processo de alto conteúdo de sólidos, produto obtido e usos do produto a presente invenção proporciona um método produção de éteres de celulose em um processo para a de alto conteúdo de sólidos substancialmente sem o uso de solventes orgânicos como um meio de reação e/ou lavagem. no método de a invenção a primeira etapa de alcalinização é levada a cabo usando polpa de celulose com alto conteúdo de sólidos e hidróxido de sódio sólido. isto é seguido por uma etapa de eterificação onde o conteúdo de sólidos é preferivelmente ainda aumentado e o uso de sólido reagente de eterificação é preferido. como solventes não orgânicos são usados como meios de reação o método inventado permite a produção de éteres de celulose diretamente da polpa nunca seca com significante economia em energia e custos de investimento. o método é especialmente adequado para a produção de sal de sódio de carboximetil celulose (cmc) com baixo grau de substituição (ds
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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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39.发明专利
公开(公告)号：SE1751617A1
公开(公告)日：2019-06-22
申请号：SE1751617
申请日：2017-12-21
Applicant: STORA ENSO OYJ
Inventor： CUNHA GISELA , SAXELL HEIDI
Abstract: A method is provided for preparing a fibrous material of crosslinked microfibrillated cellulose. Dialdehyde microfibrillated cellulose is spun into a fibrous material; and then said fibrous material is post-treated (by reduction of pH) to provide crosslinking between the dialdehyde microfibrillated cellulose. Fibrous materials such as filaments or mats, and polymer composites comprising such materials are also described.
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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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