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Composition in gel form comprising carbon nanotube and ionic liquid and method for production thereof

Foreign code F110005321
File No. E06301US
Posted date Aug 31, 2011
Country United States of America
Application number 51729803
Gazette No. 20050156144
Gazette No. 7531114
Date of filing Oct 15, 2003
Gazette Date Jul 21, 2005
Gazette Date May 12, 2009
International application number JP2003013162
International publication number WO2004037720
Date of international filing Oct 15, 2003
Date of international publication May 6, 2004
Priority data
  • P2002-307754 (Oct 23, 2002) JP
  • 2003WO-JP13162 (Oct 15, 2003) WO
Title Composition in gel form comprising carbon nanotube and ionic liquid and method for production thereof
Abstract (US7531114)
Disclosed is a novel technology, by which carbon nanotubes can be easily worked without degrading the characteristic properties thereof.
A gel composition including a carbon nanotube and an ionic liquid is produced by pulverizing, in the presence of the ionic liquid, the carbon nanotube by applying a shearing force thereto, and then, if needed, subjecting the product of the pulverization to centrifugal separation.
The gel composition exhibits an excellent workability and can be worked simply by forming a desired shape by subjecting the composition in a fluidized state to application of an external force by such an operation as a printing, coating, extrusion or injection operation, and then removing the ionic liquid with a solvent or an absorbent.
Scope of claims [claim1]
1. A gel composition formed by a method which comprises pulverizing carbon nanotubes by applying a shearing force to a mixture consisting of carbon nanotubes and an ionic liquid, wherein the ionic liquid is a salt which assumes a molten state at or very near room temperature.
[claim2]
2. The gel composition as claimed in claim 1, wherein the carbon nanotubes are single-walled carbon nanotubes.
[claim3]
3. The gel composition as claimed in claim 1, the method by which it is formed further comprising a step of subjecting the product of the pulverization to centrifugal separation.
[claim4]
4. The gel composition as claimed in claim 1, wherein the gel composition is capable of assuming a fluid state when an external force is applied.
[claim5]
5. A method for producing the gel composition of claim 1 consisting of carbon nanotubes and an ionic liquid, which comprises a step of pulverizing, in the presence of the ionic liquid, the carbon nanotubes by applying a shearing force thereto.
[claim6]
6. The method for producing the gel composition as claimed in claim 5, further comprising a step of subjecting the product of the pulverization to centrifugal separation.
[claim7]
7. A method for using the gel composition of claim 1, which comprises the step of forming a desired shape from said gel composition by subjecting the composition in a fluidized state to application of an external force by a printing, coating, extrusion or injection operation, and then a step of removing the ionic liquid from said gel composition by bringing said shape in contact with a solvent capable of dissolving the ionic liquid or an absorbent capable of absorbing the ionic liquid.
  • Inventor, and Inventor/Applicant
  • FUKUSHIMA TAKANORI
  • OGAWA ATSUKO
  • AIDA TAKUZO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) ERATO AIDA Nanospace AREA
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