Patent US4582575A successfully refreshed from Google Patents.
US4582575A
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Electrically conductive composites and method of preparation
Assignee: Boeing North American Inc
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Filing: 1984-09-04
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Granted: 1986-04-15
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Expires: 2004-09-04
Abstract
Abstract Electrically conductive composites comprising a dielectric porous substance, e.g. fiberglass fabric, and a pyrrole polymer deposited in the pores of such substance. The composites are produced by contacting the porous substance with an anode in an electrolytic cell containing an electrolyte comprising a pyrrole monomer and a substantially non-nucleophilic anion such as bisulfate, and passing an electric current through the cell, thus electrochemically precipitating a conductive pyrrole polymer in the pores of such substance.
Inventors
- 👤 Leslie F. Warren
- 👤 Dean S. Klivans
- 👤 Louis Maus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:45
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/137; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; C25; C25B; C25B11/00; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
35 words
An electrically conductive composite comprising a dielectric porous substance and an electrically conductive pyrrole polymer electrochemically deposited in the pores of said substance, said porous substance supporting said pyrrole polymer, said composite being essentially non-brittle.
Claim 2
Dependent Claim
35 words
An electrically conductive composite comprising a dielectric porous substance and an electrically conductive pyrrole polymer electrochemically deposited in the pores of said substance, said porous substance supporting said pyrrole polymer, said composite being essentially non-brittle.
Claim 3
Dependent Claim
27 words
The composite of claim 1, said porous substance selected from the group consisting of a porous ceramic, porous glass frit, a porous organic foam, and a fabric.
Claim 4
Dependent Claim
30 words
The composite of claim 2, said porous substance being a fabric selected from the group consisting of fiberglass fabric, mixed oxide fabric and a synthetic organic woven or non-woven fabric.
Claim 5
Dependent Claim
12 words
The composite of claim 3, said dielectric porous substance being fiberglass fabric.
Claim 6
Dependent Claim
46 words
The composite of claim 1, said pyrrole polymer selected from the group consisting of polypyrrole, a 3- or 3,4- alkyl or aryl C-substituted pyrrole polymer, N-alkylpyrrole polymer and N-arylpyrrole polymer, and a copolymer of pyrrole and a C- or N-substituted derivative of pyrrole as above defined.
Claim 7
Dependent Claim
9 words
The composite of claim 1, said polymer being polypyrrole.
Claim 8
Dependent Claim
19 words
The composite of claim 1, said conductive pyrrole polymer comprising a pyrrole polymer cation and a substantially non-nucleophilic anion.
Claim 9
Dependent Claim
12 words
The composite of claim 7, said anion being a strong acid anion.
Claim 10
Dependent Claim
33 words
The composite of claim 7, said non-nucleophilic anion being selected from the group consisting of sulfate, bisulfate, perchlorate, chloride, fluoborate, PF 6 - , AsF 6 - , and SbF 6 - anions.
Claim 11
Dependent Claim
25 words
The composite of claim 7, said non-nucleophilic anion selected from the group consisting of p-toluenesulfonate, polystyrene sulfonate, polyvinylsulfonate, the corresponding free sulfonic acids, and dodecylsulfate.
Claim 12
Dependent Claim
23 words
The composite of claim 1, said dielectric porous substance being fiberglass fabric, and said pyrrole polymer comprising a polypyrrole cation and bisulfate anion.
Claim 13
Dependent Claim
18 words
The composite of claim 1, said porous substance having a thickness of about 1 to about 10 mils.
Claim 14
Dependent Claim
28 words
The composite of claim 1, said composite having an electrical conductivity ranging from about 10 -3 ohm -1 cm -1 to about 150 ohm -1 cm -1 .
Claim 15
Dependent Claim
64 words
A process for producing an electrically conductive composite which comprises contacting a dielectric porous substance with an anode in an electrolytic cell containing an electrolyte comprising a pyrrole monomer and a substantially non-nucleophilic anion, electrochemically depositing a conductive pyrrole polymer in the pores of said substance, and removing the resulting composite comprised of said porous substance impregnated with said pyrrole polymer from said anode.
Claim 16
Dependent Claim
64 words
A process for producing an electrically conductive composite which comprises contacting a dielectric porous substance with an anode in an electrolytic cell containing an electrolyte comprising a pyrrole monomer and a substantially non-nucleophilic anion, electrochemically depositing a conductive pyrrole polymer in the pores of said substance, and removing the resulting composite comprised of said porous substance impregnated with said pyrrole polymer from said anode.
Claim 17
Dependent Claim
27 words
The process of claim 14, said electrolytic cell comprising an anode compartment and a cathode compartment, said anode immersed in said electrolytic present in the anode compartment.
Claim 18
Dependent Claim
11 words
An electrically conductive composite produced by the process of claim 15.
Claim 19
Dependent Claim
28 words
The process of claim 15, said pyrrole monomer selected from the group consisting of pyrrole, a 3- or 3,4-alkyl or aryl C-substituted pyrrole, an N-alkylpyrrole and an N-arylpyrrole.
Claim 20
Dependent Claim
11 words
An electrically conductive composite produced by the process of claim 17.
Claim 21
Dependent Claim
33 words
The process of claim 17, said non-nucleophilic anion being selected from the group consisting of sulfate, bisulfate, perchlorate, chloride, fluoborate, PF 6 - , AsF 6 - , and SbF 6 - anions.
Claim 22
Dependent Claim
11 words
An electrically conductive composite produced by the process of claim 19.
Claim 23
Dependent Claim
21 words
The process of claim 19, said non-nucleophilic anion being derived from the free acids or the soluble salts of said acids.
Claim 24
Dependent Claim
24 words
The process of claim 15, said non-nucleophilic anion selected from the group consisting of p-toluenesulfonate, polystyrenesulfonate, polyvinylsulfonate, the corresponding free sulfonic acids, and dodecylsulfate.
Claim 25
Dependent Claim
11 words
An electrically conductive composite produced by the process of claim 22.
Claim 26
Dependent Claim
31 words
The process of claim 15, said dielectric porous substance selected from the group consisting of a porous ceramic, porous glass frit, a porous organic foam, and a woven or non-woven fabric.
Claim 27
Dependent Claim
27 words
The process of claim 24, said porous substance being a fabric selected from the group consisting of fiberglass fabric, mixed oxide fabric and a synthetic organic fabric.
Claim 28
Dependent Claim
11 words
An electrically conductive composite produced by the process of claim 25.
Claim 29
Dependent Claim
11 words
The process of claim 25, said porous substance being fiberglass fabric.
Claim 30
Dependent Claim
11 words
An electrically conductive composite produced by the process of claim 24.
Claim 31
Dependent Claim
11 words
The process of claim 15, said electrolyte comprising an aqueous solution.
Claim 32
Dependent Claim
12 words
The process of claim 15, said electrolyte comprising an organic solvent solution.
Claim 33
Dependent Claim
37 words
The process of claim 15, said electrochemical deposition being carried out at a current density of from about 100 microamps/cm 2 to about 20 milliamps/cm 2 , for a period of about 0.3 to about 5 hours.
Claim 34
Dependent Claim
42 words
The process of claim 15, said pyrrole monomer being present in a concentration in the range from about 0.01 to about 1 molar, and said non-nucleophilic anion being present in a concentration in the range from about 0.001 to about 2 molar.
Claim 35
Dependent Claim
24 words
The process of claim 32, said porous substance being fiberglass fabric, said electrolyte solution comprising an aqueous solution of pyrrole and containing bisulfate anion.
Claim 36
Dependent Claim
26 words
An electrically conductive composite produced by the process of claim 33, said composite having a sheet resistivity ranging from about 1659 ohms/square to about 5 ohms/square.
Claim 37
Dependent Claim
43 words
The process of claim 14, including the steps of removing the anode containing said porous substance and conductive pyrrole polymer from said electrolytic cell, drying the composite comprised of said porous substance impregnated with pyrrole polymer, and peeling said composite from said anode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |