公开(公告)号：PL2989247T3

公开(公告)日：2018-08-31

申请号：PL14788480

申请日：2014-04-22

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  SAUKKONEN ESA ,  BACKFOLK KAJ ,  KAUPPI ANNA ,  SAXELL HEIDI ,  LYYTIKÄINEN KATJA

IPC: D21H11/18 ,  C08B11/15 ,  D21H11/20 ,  D21H17/37 ,  D21H17/55

公开(公告)号：PL2885458T3

公开(公告)日：2018-08-31

申请号：PL13830431

申请日：2013-08-16

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  LAND HENSDAL CECILIA ,  AXRUP LARS ,  SAXELL HEIDI

IPC: D21H11/18 ,  C08L1/02 ,  D21B1/34 ,  D21B1/38 ,  D21C9/00 ,  D21C9/18

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

IPC: C08B1/08 ,  C08B11/12

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

IPC: C08B1/08 ,  C08B11/12

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：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

IPC: D21H11/18 ,  C08B15/02 ,  C08L1/04 ,  D21H17/64 ,  D21H17/67

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.

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

IPC: C08B1/08 ,  C08B11/12

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：FI20125864A

公开(公告)日：2014-02-21

申请号：FI20125864

申请日：2012-08-20

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  LAND HENSDAL CECILIA ,  AXRUP LARS ,  SAXELL HEIDI

IPC: D21H11/18