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1. WO2020109671 - LIGNIN PARTICLE BASED HYDROGEL AND THE METHOD FOR PREPARATION OF LIGNIN COLLOIDAL PARTICLES BY SOLVENT EVAPORATION PROCESS

Publication Number WO/2020/109671
Publication Date 04.06.2020
International Application No. PCT/FI2019/050858
International Filing Date 29.11.2019
IPC
C08L 97/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
97Compositions of lignin-containing materials
C08J 3/075 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3Processes of treating or compounding macromolecular substances
02Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
03in aqueous media
075Macromolecular gels
CPC
C08J 2397/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2397Characterised by the use of lignin-containing materials
C08J 3/07
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
3Processes of treating or compounding macromolecular substances
02Making solutions, dispersions or lattices by other methods than by solution, emulsion or suspension polymerisation techniques
03in aqueous media
07from polymer solutions
C08L 97/005
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
97Compositions of lignin-containing materials
005Lignin
Applicants
  • AALTO UNIVERSITY FOUNDATION SR [FI]/[FI]
Inventors
  • ÖSTERBERG, Monika
  • SIPPONEN, Mika
  • KOSTIAINEN, Mauri
  • ÄKRÄS, Laura
  • RIVIÈRE, Guillaume
  • ZHANG, Xue
Agents
  • LAINE IP OY
Priority Data
2018602029.11.2018FI
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LIGNIN PARTICLE BASED HYDROGEL AND THE METHOD FOR PREPARATION OF LIGNIN COLLOIDAL PARTICLES BY SOLVENT EVAPORATION PROCESS
(FR) HYDROGEL À BASE DE PARTICULES DE LIGNINE ET PROCÉDÉ DE PRÉPARATION DE PARTICULES COLLOÏDALES DE LIGNINE PAR UN PROCESSUS D'ÉVAPORATION DE SOLVANT
Abstract
(EN)
Method of preparing a dispersion of colloidal lignin particles by providing a solution of lignin in a mixture of an organic solvent for lignin and a non-solvent for lignin having a ratio of non-solvent to solvent; and increasing the ratio of the non-solvent to the solvent to produce an aqueous dispersion of colloidal lignin particles. The dispersions are stable and the colloidal lignin particles are useful for many applications such as rheology modifiers in three-dimensional printing of hydrogels, or in purification systems such as filters, and packed columns, and as flocculants.
(FR)
L'invention concerne un procédé de préparation d'une dispersion de particules colloïdales de lignine par mise à disposition d'une solution de lignine dans un mélange d'un solvant organique destiné à la lignine et d'un non-solvant destiné à la lignine présentant un rapport de non-solvant au solvant ; et par augmentation du rapport du non-solvant au solvant en vue de produire une dispersion aqueuse de particules colloïdales de lignine. Les dispersions sont stables et les particules colloïdales de lignine sont utiles pour de nombreuses applications telles que des modificateurs de rhéologie dans l'impression tridimensionnelle d'hydrogels, ou dans des systèmes de purification tels que des filtres, et des colonnes condensées, et en tant que floculants.
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