DK2805986T3 - Fremgangsmåde til fremstillingen af nano-fibrillære cellulosegeler - Google Patents

Fremgangsmåde til fremstillingen af nano-fibrillære cellulosegeler Download PDF

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DK2805986T3
DK2805986T3 DK14175451.5T DK14175451T DK2805986T3 DK 2805986 T3 DK2805986 T3 DK 2805986T3 DK 14175451 T DK14175451 T DK 14175451T DK 2805986 T3 DK2805986 T3 DK 2805986T3
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nano
filler
pigment
viscosity
cellulose
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Patrick A C Gane
Michel Schenker
Joachim Schoelkopf
Daniel Gantenbein
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Fiberlean Tech Ltd
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    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
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    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
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    • D21B1/30—Defibrating by other means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
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Claims (17)

1. Fremgangsmåde til fremstillingen af nano-fibrillære cellulosegeler, kendetegnet ved trinnene at: (a) tilvejebringe cellulosefibre; (b) tilvejebringe mindst et fyldstof og/eller pigment; (c) kombinere cellulosefibrene og det mindst ene fyldstof og/eller pigment; (d) fibrillere cellulosefibrene i et vandigt miljø i tilstedeværelsen af det mindst ene fyldstof og/eller pigment, indtil fibrene mindst delvist nedbrydes til primære fibriller og en nano-fibrillær cellulosegel dannes, hvor dannelsen af gelen verificeres ved monitorering af viskositeten af blandingen afhængig af forskydningshastigheden, hvor viskositetsformindskelsen af blandingen ved trinvis forøgelse af forskydningshastigheden er stærkere end den tilsvarende viskositetsforøgelse ved efterfølgende trinvis reduktion af forskydningshastigheden over mindst en del af forskydningshastighedsområdet idet forskydningen nærmer sig nul.
2. Fremgangsmåden ifølge krav 1, kendetegnet ved at Brookfield-viskositeten af den resulterende nano-fibrillære cellulosegel er lavere end Brookfield-viskositeten afen tilsvarende nano-fibrillær cellulosesuspension, som er blevet fibrilleret i fraværet af fyldstoffer og/eller pigmenter.
3. Fremgangsmåden ifølge et hvilket som helst af kravene 1 eller 2, kendetegnet ved at cellulosefibrene er sådan indeholdt i fibermasser valgt fra gruppen omfattende eucalyptusfibermasse, granfibermasse, fyrtræsfibermasse, bøgetræsfibermasse, hampfibermasse, bomuldsfibermasse, og blandinger deraf.
4. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at cellulosefibrene er tilvejebragt i formen af en suspension, fortrinsvis som har et faststofindhold på fra 0,2 til 35 vægtprocent, mere fortrinsvis 0,25 til 10 vægtprocent, endnu mere fortrinsvis 0,5 til 5 vægtprocent, i særdeleshed 1 til 4 vægtprocent, mest fortrinsvis 1,3 til 3 vægtprocent, f.eks. 1,5 vægtprocent.
5. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at fyldstoffet og/eller pigmentet er valgt fra gruppen omfattende præcipiteret calciumkarbonat, naturligt formalet calciumkarbonat, dolomit; talkum; bentonit; ler; magnesit; satinhvidt; sepiolit, huntit, diatomit; silikater; og blandinger deraf.
6. Fremgangsmåden ifølge krav 5, kendetegnet ved at fyldstoffet og/eller pigmentet er valgt fra gruppen af præcipiteret calciumkarbonat, fortrinsvis som har vateritisk, kalcitisk eller aragonitisk krystalstruktur; naturligt formalet calciumkarbonat, fortrinsvis valgt fra marmor, kalksten og/eller kridt; og blandinger deraf.
7. Fremgangsmåden ifølge et hvilket som helst af kravene 5 eller 6, kendetegnet ved at det præcipiterede calciumkarbonat er ultrafint diskret prismatisk, scalenohedrisk eller rhombohedrisk præcipiteret calciumkarbonat.
8. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at fyldstof- og/eller pigmentpartiklerne har en vægtmedian partikelstørrelse på fra 0,5 til 15 pm, fortrinsvis 0,7 til 10 pm, mere fortrinsvis 1 til 5 pm og mest fortrinsvis 1,1 til 2 pm, f.eks. 1,5 pm eller 3,2 pm.
9. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at fyldstoffet og/eller pigmentet er associeret med dispergeringsmidler valgt fra gruppen omfattende homopolymerer eller copolymerer af polycarboxylsyresalte baserede på, f.eks., akrylsyre, methakrylsyre, maleinsyre, fumarsyre, itaconsyre, akrylamid eller blandinger deraf; alkalipolyfosfater, fosforsyrling, citron- og vinsyre og de opløselige salte deraf; eller blandinger deraf.
10. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at kombinationen af fibre og af mindst et fyldstof og/eller pigment udføres ved at tilsætte fyldstoffet og/eller pigmentet til fibrene i et eller flere trin.
11. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at fyldstoffet og/eller pigmentet tilsættes helt eller i portioner før eller under fibril leringstrinnet (d), fortrinsvis før fibrilleringstrinnet (d).
12. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at vægtforholdet mellem fibre og fyldstof og/eller pigment på en tørvægtsbasis er fra 1:10 til 10:1, fortrinsvis 1:5 til 5:1, mere fortrinsvis 1:3 til 3:1, endnu mere fortrinsvis 1:2 til 2:1 og mest fortrinsvis 1:1,5 til 1,5:1, f.eks. 1:1.
13. Fremgangsmåden ifølge et hvilket som helst af de foregående krav, kendetegnet ved at fibrilleringen udføres ved hjælp af en homogenisator eller en ultrafin friktionsknuser.
14. Fremgangsmåde til at reducere viskositeten af nano-fibrillære geler, kendetegnet ved at de nano-fibrillære geler fremstilles ved en fremgangsmåde ifølge et hvilket som helst af kravene 1 til 13.
15. Nano-fibrillær cellulosegel opnået ved fremgangsmåden ifølge et hvilket som helst af kravene 1 til 13 eller 14.
16. Den nano-fibrillære cellulosegel ifølge krav 15, kendetegnet ved at Brookfield-viskositeten af den nano-fibrillære cellulosegel er lavere end Brookfield-viskositeten afen tilsvarende nano-fibrillær cellulosesuspension, som er blevet fibrilleret i fraværet af fyldstoffer og/eller pigmenter.
17. Anvendelsen af den nano-fibrillære cellulosegel ifølge et hvilket som helst af kravene 15 eller 16 i anvendelser såsom i materialekompositter, plast, maling, gummi, beton, keramik, klæbestoffer, fødevarer, eller ved sårhelende anvendelser.
DK14175451.5T 2009-03-30 2009-03-30 Fremgangsmåde til fremstillingen af nano-fibrillære cellulosegeler DK2805986T3 (da)

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EP09156703.2A EP2236545B1 (en) 2009-03-30 2009-03-30 Process for the production of nano-fibrillar cellulose gels
EP14175451.5A EP2805986B1 (en) 2009-03-30 2009-03-30 Process for the production of nano-fibrillar cellulose gels

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DK14175451.5T DK2805986T3 (da) 2009-03-30 2009-03-30 Fremgangsmåde til fremstillingen af nano-fibrillære cellulosegeler
DK09156703.2T DK2236545T3 (da) 2009-03-30 2009-03-30 Fremgangsmåde til fremstilling af nano-fibrillære cellulosegeler
DK10711423.3T DK2414435T3 (da) 2009-03-30 2010-03-30 Fremgangsmåde til fremstillingen af nano-fibrillære cellulose-geler
DK17190151.5T DK3312217T3 (da) 2009-03-30 2010-03-30 Fremgangsmåde til fremstilling af en malingsammensætning ved anvendelse af nanofibrillære cellulosegeler
DK19178927.0T DK3567069T3 (da) 2009-03-30 2010-03-30 Fremgangsmåde til fremstilling af nanofibrillære cellulosegeler

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DK10711423.3T DK2414435T3 (da) 2009-03-30 2010-03-30 Fremgangsmåde til fremstillingen af nano-fibrillære cellulose-geler
DK17190151.5T DK3312217T3 (da) 2009-03-30 2010-03-30 Fremgangsmåde til fremstilling af en malingsammensætning ved anvendelse af nanofibrillære cellulosegeler
DK19178927.0T DK3567069T3 (da) 2009-03-30 2010-03-30 Fremgangsmåde til fremstilling af nanofibrillære cellulosegeler

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