Water-soluble electrically conductive composition, modifications, and applications thereof

• US 6,866,799 B2
• Filed: 05/09/2002
• Issued: 03/15/2005
• Est. Priority Date: 05/09/2002
• Status: Expired due to Fees

• Current Assignee: Ask LLC, Tetros Innovations, LLC
• Original Assignee: Anuvu, Incorporated
• Inventors: Becker, Rolf R., Orsbon, Wyatt B., Hodge, Rex A.
• Primary Examiner(s): KOPEC, MARK T
• Application Number:
  US10/143,198
• Publication Number:
  US 20030209697A1
• Time in Patent Office: 1,041 Days
• Field of Search: 252/511, 252/512, 252/513, 252/514, 338/22.R, 250/515.1
• US Class Current: 252/511
• CPC Class Codes: C08F 283/00 Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
• CPC Class Codes: H01B 1/00 Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
• CPC Class Codes: H01B 1/22 the conductive material comprising metals or alloys
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H05K 1/095 for polymer thick films, i.e. having a permanent organic polymeric binder

Abstract

The disclosed invention is an electrically conductive aqueous polymeric vehicular emulsion containing suspended electrically conductive material. The method for producing said composition and correlated compositions is also disclosed. The present invention is intended for an extensive range of applications, from EMI shielding to complex three-dimensional printed circuitry to electrochemical fuel cell sealants. The electrically conductive composition can also be altered to produce an electrically insulative composition.

Claims

1. An electrically conductive aqueous polymeric vehicular emulsion composition comprising:

a. approximately 8 to 45% of total compositional weight of a water-soluble acrylic polymer copolymerized with another polymer selected from the group consisting of styrene polymers, acrylate polymers, polyacrylate polymers, (meth)acrylate polymers, poly(meth)acrylate polymers, hydroxyl polymers;

esters and acid of acrylic polymers, styrene polymers, acrylate polymers, polyacrylate polymers, (meth)acrylate polymers, poly(meth)acrylate polymers, hydroxyl polymers and further polymerization thereof;

b. less than 90% of total compositional weight of an electrically conductive material component selected from the group consisting of aluminum, antimony, bismuth, cadmium, chromium, copper, gallium, gold, iridium, lead, magnesium, manganese, mercury, molybdenum, nickel, palladium, platinum, rhodium, selenium, silver, tantalum tellurium tin, titanium, tungsten, uranium, zinc, zirconium, silver halide, electrically conductive carbons, carbon nano-structures, carbon blacks, graphites, and mixtures thereof;

c. an effective amount of a water-soluble wetting agent;

d. a solvency effective amount of water; and

e. wherein said composition is augmented with a water-soluble elastomer.

2. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1, wherein said water-soluble elastomer comprises approximately 0.1 to 7% of total compositional weight, and is selectod from the group consisting of silicone-based elastomers, silicone polysiloxane, paraffins, alkaline paraffins, macro-paraffins, silanes and calcium stearate.

3. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1, wherein said composition is augmented with a water-soluble antifoaming agent, which comprises approximately 0.01 to 5% of total compositional weight, and is selected from the group consisting of silicone-based emulsions.

4. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 3, wherein said water-soluble antifoaming agent is manipulated by percentage of total weight of said composition in order to vary the properties of said composition that protect against chemical corrosion.

5. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1, wherein said composition is augmented with a water-soluble polymer dispersant, which comprises approximately 0.1 to 5% of total compositional weight, and is selected from the group consisting of carboxylic polymers, carboxylic acid polymers, salts of carboxylic polymers, salts of carboxylic acid polymers, soja-lecithin, and alkyl phenol polyglycol ether.

6. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1, wherein said composition is augmented with a fluoro-polymer, such as polytetrafluoroethylene and perfluorosulfonic acid ionomer, comprising approximately 0.1 to 19% of total compositional weight.

7. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized to produce, operate and maintain electrical circuitry, electrical circuit boards or other means for transmitting electricity.

8. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized to produce, operate and maintain electrical structural integrity matrices.

9. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized to produce, operate and maintain electromagnetic field transmission and reception devices.

10. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized to produce, operate and maintain electrical electromagnetic interference shielding.

11. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized to produce, operate and maintain electrical contacts.

12. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized as an electrically conductive sealant.

13. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized as an electrically conductive sealant specifically to produce, operate and maintain electrochemical fuel cells or electrolysis cells.

14. The electrically conductive aqueous polymeric vehicular emulsion composition of claim 1 utilized as an electrically conductive adhesive for mounting and fastening electronic components.