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Polyionic dendrimer and hydrogel comprising same achieved

Foreign code F120006594
File No. BE06301WO
Posted date May 15, 2012
Country EPO
Application number 10793831
Gazette No. 2450392
Gazette No. 2450392
Date of filing Jun 28, 2010
Gazette Date May 9, 2012
Gazette Date Jun 25, 2014
International application number JP2010004267
International publication number WO2011001657
Date of international filing Jun 28, 2010
Date of international publication Jan 6, 2011
Priority data
  • 2010JP004267 (Jun 28, 2010) WO
  • P2009-156670 (Jul 1, 2009) JP
Title Polyionic dendrimer and hydrogel comprising same achieved
Abstract Provided is a hydrogel which comprises water as the main component at a high water content and has mechanical strength suitable for practical use and which exhibits high transparency and self-healing and shape-retaining properties.
Also provided are both a material for the hydrogel and a novel polyionic dendrimer.
A polyionic dendrimer which comprises a hydrophilic linear polymer as the core and polyester dendrons attached to both terminals of the linear polymer and in which cationic groups are bonded to the surfaces of the dendrons, said cationic groups being selected from the group consisting of guanidine group, thiourea group, and isothiourea group; a material for a hydrogel, which comprises the polyionic dendrimer and clay; and a hydrogel prepared using the material.(see diagramm)
Scope of claims [claim1]
1. A polyionic dendrimer, comprising: a hydrophilic linear polyalkylene glycol as the core, and polyester dendrons attached to both terminals of the polyalkylene glycol , wherein a cationic group selected from the group consisting of a guanidine group, a thiourea group, and an isothiourea group is bonded to a surface of the dendron.
[claim2]
2. The polyionic dendrimer according to Claim 1, wherein the polyester is a polyester composed of a saturated aliphatic carboxylic acid having 3 to 10 carbon atoms in which two or more hydroxyl groups are symmetrically substituted to have symmetric branching.
[claim3]
3. The polyionic dendrimer according to Claim 1 or 2, wherein a cationic group selected from the group consisting of a guanidine group, a thiourea group, and an isothiourea group is bonded to the surface of the dendron via a polyether group.
[claim4]
4. The polyionic dendrimer according to Claim 1 or 2, wherein the polyionic dendrimer is a polyionic dendrimer that is represented by the following formula 1: (see diagramm) wherein n represents the repeating number of polyethylene glycol in the core and is from 20 to 100000, m represents the repeating number of a linker group for introducing cationic groups to the surface and is from 1 to 6, g represents the generation of the dendron and is from 1 to 5, R represents a cationic group selected from the group consisting of a guanidine group, a thiourea group, and an isothiourea group).
[claim5]
5. The polyionic dendrimer according to any one of Claims 1 to 4, wherein the polyionic dendrimer is a polyionic dendrimer that is represented by the following formula 5: (see diagramm) wherein n is from 20 to 100000.
[claim6]
6. A material for a hydrogel, comprising: the polyionic dendrimer according to any one of Claims 1 to 5 and a clay mineral.
[claim7]
7. The material for a hydrogel according to Claim 6, further comprising a linear polymer having an ionic side chain.
[claim8]
8. The material for a hydrogel according to Claim 7, wherein linear polymer having an ionic side chain is an alkali metal salt of polyacrylic acid or polymethacrylic acid.
[claim9]
9. The material for a hydrogel according to any one of Claims 6 to 8, wherein the clay mineral is a clay mineral having a nano sheet structure.
[claim10]
10. The material for a hydrogel according to any one of Claims 6 to 9, wherein the clay mineral is one or more kinds selected from the group consisting of montmorilonite, hectorite, saponite, bidelite, mica, and synthetic mica.
[claim11]
11. A hydrogel, comprising: water in the material for a hydrogel according to any one of Claims 6 to 10.
[claim12]
12. A protein-containing hydrogel, comprising: a physiologically active protein in the hydrogel according to Claim 11.
  • Applicant
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • Inventor
  • MYNAR JUSTIN
  • AIDA TAKUZO
IPC(International Patent Classification)
Reference ( R and D project ) ERATO/SORST Creating and applying electronic nano-space by molecular programming AREA
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