Electrically conductive polymeric materials and use thereof

• US 6,168,732 B1
• Filed: 07/17/1998
• Issued: 01/02/2001
• Est. Priority Date: 08/16/1991
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Saraf, Ravi, Molis, Steven Earle, Spellane, Peter Joseph, Bourgault, Vincent Albert, Patel, Niranjan Mohanlal, Mirre, Michael Wayne, Ardakani, Ali Afzali, Angelopoulos, Marie, Shaw, Jane Margaret, Comerford, Liam David
• Primary Examiner(s): Delcotto, Gregory R.
• Application Number:
  US09/118,619
• Time in Patent Office: 900 Days
• Field of Search: 252/500
• US Class Current: 252/500
• CPC Class Codes: C08G 61/02 Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
• CPC Class Codes: C08G 61/123 derived from five-membered heterocyclic compounds
• CPC Class Codes: C08G 75/0209 derived from monomers containing one aromatic ring
• CPC Class Codes: C08G 75/0295 Modification with inorganic compounds
• CPC Class Codes: C08L 101/12 characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity liquid crystal materials or compositions C09K19/00
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 53/02 of vinyl-aromatic monomers and conjugated dienes
• CPC Class Codes: C08L 65/00 Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain C08L7/00 - C08L57/00, C08L61/00 take precedence; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 79/02 Polyamines
• CPC Class Codes: C08L 79/04 Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08L 81/02 Polythioethers; Polythioether-ethers
• CPC Class Codes: C08L 81/04 Polysulfides
• CPC Class Codes: H01B 1/00 Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
• CPC Class Codes: H01B 1/124 Intrinsically conductive polymers
• CPC Class Codes: H01B 1/128 comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes

Abstract

The present invention relates to electrically conductive polymer blend compositions comprising a non-conducting polymeric component and an electrically conducting polymeric component and specific applications to which the blend compositions can be put.

Claims

1. An electrically conductive shaped article formed from a blend comprising a Lewis base electrically conductive polymer material selected from the group consisting of substituted and unsubstituted polyparaphenylenevinylenes, polyanilines, polyazines, polythiophenes, poly-p-phenylene sulfides, polyfuranes, polypyrroles, polyselenophenes, polyacetylenes, formed from soluble precursors and combinations and blends thereof, compounded and blended at a molecular scale with a dielectric Lewis acid polymer dopant, selected from the group consisting of, cellulose sulfonic acid, polyamic acid, polyphosphoric acid, polymers containing acid chloride (—

CO—

Cl) and polymers containing sulfonyl chloride groups, said Lewis acid polymer dopant dopes said Lewis base electrically conductive polymeric undoped form to obtain said electrically conductive blend formed into said shaped article.

2. The shaped article defined in claim 1, wherein said electrically conductive polymer material is in the form of a fiber.

3. The shaped article defined in claim 1, wherein the form of said article is an electrically conductive body selected from the group consisting of a crystalline solid, an amorphous solid, a polycrystalline solid, a semi crystalline solid and glass.

4. The shaped article defined in claim 1 that has been shaped into a stylus suitable for use in resistive film digitizer.