Insulating polymers containing polyaniline and carbon nanotubes

• US 20050165155A1
• Filed: 10/20/2004
• Published: 07/28/2005
• Est. Priority Date: 10/21/2003
• Status: Abandoned Application

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Blanchet-Fincher, Graciela Beatriz
• Application Number:
  US10/969,422
• Publication Number:
  US 20050165155A1
• Time in Patent Office: Days
• US Class Current: 524/498
• CPC Class Codes: B41M 1/30 on organic plastics, horn or similar materials recording sheets having a coating to improve ink, dye or pigment receptivity B41M5/50; marking or recording on plastic by irradiation with electromagnetic beams, e.g. laser, B41M5/267
• CPC Class Codes: B41M 5/0047 by ink-jet printing
• CPC Class Codes: B41M 5/0052 by thermal printing
• CPC Class Codes: B41M 5/0064 on plastics, horn, rubber, or other organic polymers
• CPC Class Codes: B41M 5/385 characterised by the transferable dyes or pigments infrared absorbing dyes B41M5/465
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C08K 9/08 Ingredients agglomerated by treatment with a binding agent
• CPC Class Codes: C09D 11/52 Electrically conductive inks
• CPC Class Codes: H01B 1/128 comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon

Abstract

The present invention is a composition comprising carbon nanotubes and conductive polyaniline in an insulating polymer matrix and a process for making that composition.

Claims

1. A composition comprising:

a) An insulating polymer matrix

b) 0.1 to 10% by weight of carbon nanutubes dispersed in said insulating polymer matrix

c) conductive polyaniline coated on said carbon nanotubes

2. A process comprising:

a) dispersing carbon nanotubes in a solvent also containing dissolved polyaniline to form a first liquid dispersion

b) mixing a solution of insulating polymer with said first liquid dispersion to form a second liquid dispersion depositing said second liquid dispersion on a substrate and allowing said solvent to evaporate.

3. The process of claim 2 wherein said substrate is a donor element for thermal transfer printing.

4. The process of claim 2 wherein the depositing of said second liquid dispersion on a substrate is accomplished by a printing method selected from the group consisting of ink jet printing, flexography and gravure.