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1. WO2016149815 - SWITCHABLE POLYSACCHARIDES, METHODS AND USES THEREOF

Publication Number WO/2016/149815
Publication Date 29.09.2016
International Application No. PCT/CA2016/050325
International Filing Date 21.03.2016
IPC
C08L 101/02 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
02characterised by the presence of specified groups
C08J 3/00 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
C08L 1/00 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
C08L 3/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
C08L 5/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
5Compositions of polysaccharides or of their derivatives not provided for in group C08L1/ or C08L3/142
CPC
C08B 15/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
15Preparation of other cellulose derivatives or modified cellulose ; , e.g. complexes
05Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
06containing nitrogen ; , e.g. carbamates
C08B 31/125
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
31Preparation of derivatives of starch
08Ethers
12having alkyl or cycloalkyl radicals substituted by heteroatoms, ; e.g. hydroxyalkyl or carboxyalkyl starch
125having a substituent containing at least one nitrogen atom, e.g. cationic starch
C08B 37/003
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
37Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
0006Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
0024beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
00272-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
003Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
C08L 1/02
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 1/04
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
04Oxycellulose; Hydrocellulose ; , e.g. microcrystalline cellulose
C08L 3/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
04Starch derivatives ; , e.g. crosslinked derivatives
Applicants
  • QUEEN'S UNIVERSITY AT KINGSTON [CA]/[CA]
Inventors
  • CHAMPAGNE, Pascale
  • JESSOP, Philip G.
  • BONIFACE, Kyle J.
  • CUNNINGHAM, Michael F.
  • WANG, Haidong
  • GARCIA VALDEZ, Omar
  • CORMIER, Alex
  • GE, Shijian
  • ARREDONDO LUNA, Joaquin
Agents
  • OSLER, HOSKIN & HARCOURT LLP
Priority Data
2,918,90426.01.2016CA
62/136,05020.03.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SWITCHABLE POLYSACCHARIDES, METHODS AND USES THEREOF
(FR) POLYSACCHARIDES COMMUTABLES, PROCÉDÉS ET LEURS UTILISATIONS
Abstract
(EN)
The present application provides a reversibly switchable composite material comprising a polysaccharide and a polysaccharide-supported switchable moiety that is switchable between a neutral first form and an ionized second form. The composite material converts to, or is maintained in, its second form when the switchable moiety is exposed to an ionizing trigger, such as CO2 , at amounts sufficient to maintain the ionized form. The composite material converts to, or is maintained in, the first form when CO2 is removed or reduced to an amount insufficient to maintain the ionized form. Also provided are uses of these composite materials including, but is not limited to, manipulating and/or controlling dispersibility (e.g., CNC dispersibility); surface cleaning; separation applications (e.g., membranes); absorption/flocculation applications; and water treatment.
(FR)
La présente invention concerne un matériau composite commutable de manière réversible comprenant un polysaccharide et une fraction commutable supportée sur polysaccharide pouvant être commutée entre une première forme neutre et une seconde forme ionisée. Le matériau composite est converti, ou maintenu, dans sa seconde forme lorsque la fraction commutable est exposée à un déclencheur ionisant, tel que le CO2, dans des quantités suffisantes pour conserver la forme ionisée. Le matériau composite est converti, ou maintenu, dans la première forme lorsque le CO2 est éliminé ou diminue jusqu'à une quantité insuffisante pour conserver la forme ionisée. L'invention concerne également des utilisations de ces matériaux composites, telles que, non limitativement, la manipulation et/ou la régulation de la dispersibilité (dispersibilité CNC, par ex.), le nettoyage de surfaces, des applications de séparation (membranes, par ex.), l'absorption/floculation et le traitement de l'eau.
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