-
公开(公告)号：ES2677717T3
公开(公告)日：2018-08-06
申请号：ES13772103
申请日：2013-04-04
Applicant: STORA ENSO OYJ
Inventor： SAXELL HEIDI , HEISKANEN ISTO , AXRUP LARS , LAND HENDSDAL CECILIA , JOKELA VEIKKO
Abstract: Un método para la preparación de éteres de celulosa a partir de pulpa húmeda, nunca secada, con un alto contenido de sólidos con un proceso que comprende un tratamiento alcalino y una etapa de eterificación, llevando a cabo el tratamiento alcalino con hidróxido de sodio (NaOH) sólido (80-99,5% p/p) granulado o molido, sustancialmente sin uso de disolventes orgánicos, y trabajando mecánicamente el material de forma continua o en intervalos de tiempo durante el tratamiento alcalino, en donde el contenido de la pulpa en la etapa de tratamiento alcalino es superior al 20% p/p pero menor al 75% p/p.
-
公开(公告)号：NZ700627A
公开(公告)日：2016-09-30
申请号：NZ70062713
申请日：2013-04-04
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , SAXELL HEIDI , 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
-
13.发明专利
公开(公告)号：SE538243C2
公开(公告)日：2016-04-12
申请号：SE1251281
申请日：2012-11-09
Applicant: STORA ENSO OYJ
Inventor： BACKFOLK KAJ , SAXELL HEIDI , HEISKANEN ISTO , AXRUP LARS , JOKELA VEIKKO , KASTINEN HENRI , KAUPPI ANNA , RUOHONIEMI NINA , LAITINEN RISTO , LAUKALA TEIJA
-
公开(公告)号：AU2013245244A1
公开(公告)日：2014-10-23
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
-
公开(公告)号：FI20135103A
公开(公告)日：2014-08-02
申请号：FI20135103
申请日：2013-02-01
Applicant: STORA ENSO OYJ
Inventor： JOKELA VEIKKO , KOTILAINEN ARI , HANNUS MIKAEL
-
Patent Agency Ranking
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
-
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
-
18.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
-
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
-
公开(公告)号：SE538085C2
公开(公告)日：2016-03-01
申请号：SE1251280
申请日：2012-11-09
Applicant: STORA ENSO OYJ
Inventor： BACKFOLK KAJ , SAXELL HEIDI , HEISKANEN ISTO , AXRUP LARS , HENSDAL CECILIA LAND , JOKELA VEIKKO , KOTILAINEN ARI , KASTINEN HENRI , KAUPPI ANNA , SAUKKONEN ESA
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.022 seconds)
