Top > Search of International Patents > Adhesive

Adhesive

Foreign code F190009712
File No. E097P07US2
Posted date Jan 24, 2019
Country United States of America
Application number 201815997838
Gazette No. 20180282454
Date of filing Jun 5, 2018
Gazette Date Oct 4, 2018
International application number JP2014068499
International publication number WO2015029615
Date of international filing Jul 10, 2014
Date of international publication Mar 5, 2015
Priority data
  • P2013-175029 (Aug 26, 2013) JP
  • 2014JP68499 (Jul 10, 2014) WO
  • 201614914289 (Feb 25, 2016) US
Title Adhesive
Abstract The object of the present invention is to provide a novel adhesive.The characteristics of the present invention is an adhesive comprising an organic polymer having a main chain formed by a water-soluble polymer unit, and a hydrophilic organic group and a self-assembling group bonded to the water-soluble polymer unit; and a curing agent.
Outline of related art and contending technology BACKGROUND ART
As an adhesive, in-water adhesives are known which are useful for curing under wet conditions to bond materials to each other.As such an in-water adhesive, a fibrin glue which utilizes scleroprotein produced by reacting thrombin with fibrinogen, cyanoacrylate which cures through the reaction with water to adhere, a gelatin which cures upon the addition of glutaraldehyde, an epoxy resin and others are known, for example.In addition, a polymer having a catechol hydroxy group is also known (Patent Document 1).
Among these in-water adhesives, a fibrin glue, for example, cannot be mass-produced, and it may cause infections since it utilizes biological components.A cyanoacrylate is sometimes harmful to human bodies since a monomer before the curing has toxicity while cured product of cyanoacrylate is sufficiently safe.Glutaraldehyde also has toxicity, which induces curing by its addition to gelatin.An epoxy resin requires long curing time, and also requires heating for complete curing.
In contrast, in-water adhesives have been highly expected in various use applications such as a medical adhesive (an adhesive for implantation use) and surface adhesion of materials (concrete or metal) under wet or in water conditions.Therefore, further development of in-water adhesive is desired.
Scope of claims [claim1]
1. An organic polymer comprising:
a main chain formed by water-soluble polymer unit; and
a hydrophilic organic group and a self-assembling group bonded to the water-soluble polymer unit.
[claim2]
2. The organic polymer according to claim 1, comprising units represented by general formula (I):
wherein R1 represents a hydrogen atom or a methyl group; R2 represents a hydrocarbon group having 1 to 6 carbon atoms; L1 represents ―O― or ―NH―; X represents a hydroxy group or an amino group optionally forming an ammonium salt;
R3 represents a hydrogen atom or a methyl group; R4 represents a hydrocarbon group having 3 to 20 carbon atoms; L2 represents ―O― or ―NH―; L3 represents a single bond or ―CO―; A represents an amino acid residue or oligopeptide which contains at least one amino acid selected from alanine, leucine, isoleucine and valine as a constituent amino acid; R5 represents a hydrogen atom or a methyl group; R6 represents a hydrocarbon group having 4 to 10 carbon atoms; L4 represents ―O― or ―NH―; m, n and o represent the abundance ratios of the units, and each of m and n represents a numerical value greater than 0, o represents a numeral value not less than 0, and m:n:o satisfies (2 to 20):1:(0 to 3).
[claim3]
3. The organic polymer according to claim 2 wherein R1 represents a hydrogen atom or a methyl group; L1 represents ―O― or ―NH―; R2 represents a linear alkylene group having 1 to 4 carbon atoms; X represents a hydroxy group; R3 represents a hydrogen atom or a methyl group; R4 represents a linear alkylene group having 4 to 8 carbon atoms; L2 represents ―O― or ―NH―; L3 represents ―CO―; A represents an oligopeptide that is an alanine di- to hexa-mer; and m:n:o satisfies (7 to 13):1:(0 to 3) in general formula (I).
[claim4]
4. A method for producing an organic polymer, comprising:
copolymerizing a first monomer wherein a hydrophilic organic group is bonded to a monomer of which homopolymer is a water-soluble polymer with a second monomer wherein a self-assembling group is bonded to a monomer of which homopolymer is a water-soluble polymer.
[claim5]
5. The method for producing an organic polymer according to claim 4, wherein the monomer of which homopolymer is a water-soluble polymer is (meth)acrylic acid or (meth)acrylic acid amide.
  • Inventor, and Inventor/Applicant
  • TAKAHARA Atsushi
  • NISHIDA Jin
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) ERATO TAKAHARA Soft Interface AREA
Please contact us by E-mail or facsimile if you have any interests on this patent.

PAGE TOP

close
close
close
close
close
close