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1. WO2020093137 - POLYMER MICROSPHERES OF HIERARCHICALLY STRUCTURED CELLULOSE NANOCRYSTALS AND METHOD TO PRODUCE THE SAME

Publication Number WO/2020/093137
Publication Date 14.05.2020
International Application No. PCT/CA2019/051363
International Filing Date 24.09.2019
IPC
B01J 13/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
13Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
02Making microcapsules or microballoons
06by phase separation
C08J 3/02 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
C08J 3/20 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
20Compounding polymers with additives, e.g. colouring
C08L 1/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
1Compositions of cellulose, modified cellulose, or cellulose derivatives
02Cellulose; Modified cellulose
C08L 101/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
101Compositions of unspecified macromolecular compounds
C08L 51/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
51Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
02grafted on to polysaccharides
Applicants
  • FPINNOVATIONS [CA]/[CA]
Inventors
  • HAMAD, Wadood Y.
  • MIAO, Chuanwei
Agents
  • NORTON ROSE FULBRIGHT CANADA LLP S.E.N.C.R.L., S.R.L.
Priority Data
62/757,42708.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POLYMER MICROSPHERES OF HIERARCHICALLY STRUCTURED CELLULOSE NANOCRYSTALS AND METHOD TO PRODUCE THE SAME
(FR) MICROSPHÈRES POLYMÈRES DE NANOCRISTAUX DE CELLULOSE À STRUCTURE HIÉRARCHIQUE ET LEUR PROCÉDÉ DE PRODUCTION
Abstract
(EN)
It is provided a microspherical structure comprising an external shell of structured cellulose nanocrystals (CNCs) and at least one polymer, and a core, wherein the core can be hollow or filled with an immiscible medium. It is also provided a method for producing the same comprising spray-drying the mixture of CNCs and polymer through an atomizer and into a drying chamber forming droplets, wherein the solvent used to suspend the CNCs is evaporated and the microspherical structures are formed. These microstructural spheres can have wide industrial, medical and pharmaceutical applications, whereby their ingredients and structure are tuned and controlled.
(FR)
L'invention concerne une structure microsphérique comprenant une enveloppe externe de nanocristaux de cellulose structurés (CNC) et au moins un polymère, et un noyau, le noyau pouvant être creux ou rempli d'un milieu non miscible. L'invention concerne également un procédé de production de celui-ci comprenant le séchage par pulvérisation du mélange de CNC et de polymère à travers un atomiseur et dans une chambre de séchage formant des gouttelettes, le solvant utilisé pour suspendre les CNC étant évaporé et les structures microsphériques étant formées. Ces sphères microstructurales peuvent avoir de larges applications industrielles, médicales et pharmaceutiques, de sorte que leurs ingrédients et leur structure soient ajustés et contrôlés.
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