High conductivity polyaniline compositions and uses therefor

• US 20040065970A1
• Filed: 07/09/2003
• Published: 04/08/2004
• Est. Priority Date: 02/16/2001
• Status: Active Grant

• 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
• Granted Patent: US 7,033,525 B2
• Time in Patent Office: Days
• US Class Current: 264/29.1
• 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 2201/011 Nanostructured additives
• CPC Class Codes: C08K 3/041 Carbon nanotubes
• CPC Class Codes: C08K 7/24 inorganic
• CPC Class Codes: C08L 79/02 Polyamines
• CPC Class Codes: H01B 1/04 mainly consisting of carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H01B 1/127 comprising five-membered aromatic rings in the main chain, e.g. polypyrroles, polythiophenes
• 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
• CPC Class Codes: Y10S 428/901 Printed circuit

Abstract

The present invention describes compositions formed from polyanaline and carbon nanotubes, which exhibit enhanced conductivity and which provide uses in electronic circuit applications.

Claims

1. A composition comprising a nitrogen base salt derivative of emeraldine polyaniline and carbon nonotubes.

2. The composition of claim 1 wherein the nanotubes are single-walled.

3. The composition of claim 1 wherein the nanotubes are multi-walled.

4. An electronic circuit comprising one or more conductive pathways of a nitrogen base salt derivative of emeraldine polyaniline and carbon nanotubes.

5. A process for depositing conductive pathways from a donor element onto a receiver substrate contiguous with the donor element, wherein the donor element is a layered structure comprising a support layer, one or a plurality of heating layers capable of partially absorbing laser radiation, and an imaging topcoat transfer layer, and, optionally, an ejection layer, the process comprising:

(a) exposing said support layer to incident laser energy;

(b) converting said laser energy to heat in the one or plurality of heating layer(s) that is (are) contiguous with the topcoat and that absorbs said laser energy;

(c) said heat applied to said topcoat being sufficient to effect a transfer of at least a portion of said topcoat to a receiving surface;

wherein the topcoat is a conductive PANI/nanotube composite.

6. The process of claim 5 wherein the heating layer is carbon.

7. The process of claim 5 wherein the heating layer is a metal and is selected from the group consisting of Al, Cr, Sb, Ti, Bi, Zr, Ni, In, Zn, and their oxides, suboxides and alloys.