US4696835A
Expired / Lapsed
US
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Process for applying an electrically conducting polymer to a substrate
Assignee: Boeing North American Inc
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Filing: 1986-07-08
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Granted: 1987-09-29
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Expires: 2006-07-08
Abstract
Abstract Production of electrically conductive composite or structural materials comprising a dielectric substrate, e.g. fiberglass fabric, and a layer of a pyrrole polymer on the substrate, by treating the substrate with a solution of a strong oxidant containing a substantially non-nucleophilic anion, e.g. ferric chloride, drying the substrate and exposing the so treated substrate with the vapors of a pyrrole and oxidizing the pyrrole by the strong oxidant and depositing a polypyrrole layer or film on the substrate.
Inventors
- 👤 Louis Maus
- 👤 Edward F. Witucki
- 👤 Leslie F. Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:56
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/188; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01B1/14; H05K1/00; H05K1/02; H05K1/09
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
70 words
A process for producing an electrically conductive composite which comprises: (a) contacting a dielectric substrate with a solution of a strong oxidant capable of oxidizing a pyrrole to a pyrrole polymer, (b) drying said substrate, and (c) contacting the so treated substrate with the vapors of a pyrrole and oxidizing said pyrrole by said strong oxidant in the presence of a substantially non-nucleophilic anion, and depositing polypyrrole on said substrate.
Claim 2
Dependent Claim
70 words
A process for producing an electrically conductive composite which comprises: (a) contacting a dielectric substrate with a solution of a strong oxidant capable of oxidizing a pyrrole to a pyrrole polymer, (b) drying said substrate, and (c) contacting the so treated substrate with the vapors of a pyrrole and oxidizing said pyrrole by said strong oxidant in the presence of a substantially non-nucleophilic anion, and depositing polypyrrole on said substrate.
Claim 3
Dependent Claim
49 words
The process of claim 1, said contacting step (a) being carried out by immersion of said dielectric substrate in said oxidant solution and said contacting step (c) being carried out by exposing said substrate containing said strong oxidant to the vapors of a liquid pyrrole or a solution thereof.
Claim 4
Dependent Claim
24 words
The process of claim 1, including carrying out a plurality of treatments of said dielectric substrate with said strong oxidant and said pyrrole vapors.
Claim 5
Dependent Claim
42 words
The process of claim 1, said strong oxidant being a cation selected from the group consisting of Fe 3+ , Cu 2+ , Ce 4+ , NO + , ON 2 + and (C 6 H 5 ) 3 C + cations.
Claim 6
Dependent Claim
27 words
The process of claim 1, said pyrrole selected from the group consisting of pyrrole, a 3- and 3,4-alkyl and aryl C-substituted pyrrole, an N-alkylpyrrole and an N-arylpyrrole.
Claim 7
Dependent Claim
33 words
The process of claim 1, 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 8
Dependent Claim
21 words
The process of claim 6, said non-nucleophilic anion being derived from the free acids or the soluble salts of said acids.
Claim 9
Dependent Claim
17 words
The process of claim 1, said non-nucleophilic anion being present in the solution of said strong oxidant.
Claim 10
Dependent Claim
39 words
The process of claim 8, said oxidant and said non-nucleophilic anion being provided by a compound selected from the group consisting of ferric perchlorate, ferric chloride, ceric sulfate, cupric fluoborate, cupric perchlorate, nitrosyl hexafluorophosphate, ferric ethylbenzenesulfonate and ferric dodecylbenzenesulfonate.
Claim 11
Dependent Claim
43 words
The process of claim 1, said solution of said strong oxidant being an aqueous solution or an organic solvent solution of said oxidant including an organic solvent which is inert with respect to said oxidant and permitting said oxidant to oxidize said pyrrole.
Claim 12
Dependent Claim
11 words
The process of claim 2, said pyrrole being a neat pyrrole.
Claim 13
Dependent Claim
30 words
The process of claim 2, said pyrrole being present in aqueous or organic solvent medium in which said pyrrole is soluble and which does not interfere with the oxidation reaction.
Claim 14
Dependent Claim
38 words
The process of claim 8, said oxidant being present in the range of about 0.001 to about 2 molar, and said non-nucleophilic anion being present in a concentration in the range from about 0.001 to about 2 molar.
Claim 15
Dependent Claim
23 words
The process of claim 1, said dielectric substrate selected from the group consisting of a ceramic, glass, an organic foam, and a fabric.
Claim 16
Dependent Claim
26 words
The process of claim 14, said substrate being a fabric selected from the group consisting of fiberglass fabric, mixed oxide fabric and a synthetic organic fabric.
Claim 17
Dependent Claim
10 words
The process of claim 15, said substrate being fiberglass fabric.
Claim 18
Dependent Claim
94 words
A process for producing an electrically conductive composite which comprises: (a) dipping a dielectric substance in a solution of a strong oxidant capable of oxidizing a pyrrole to a pyrrole polymer, and a substantially non-nucleophilic anion, (b) drying said substance containing said strong oxidant and non-nucleophilic anion, and (c) exposing the dried substance to the vapors of a pyrrole generated by a liquid pyrrole, and oxidizing said pyrrole by said strong oxidant in the presence of said substantially non-nucleophilic anion, and depositing polypyrrole in the form of a layer or film on said substance.
Claim 19
Dependent Claim
94 words
A process for producing an electrically conductive composite which comprises: (a) dipping a dielectric substance in a solution of a strong oxidant capable of oxidizing a pyrrole to a pyrrole polymer, and a substantially non-nucleophilic anion, (b) drying said substance containing said strong oxidant and non-nucleophilic anion, and (c) exposing the dried substance to the vapors of a pyrrole generated by a liquid pyrrole, and oxidizing said pyrrole by said strong oxidant in the presence of said substantially non-nucleophilic anion, and depositing polypyrrole in the form of a layer or film on said substance.
Claim 20
Dependent Claim
92 words
The process of claim 17, said pyrrole selected from the group consisting of pyrrole, a 3- and 3,4-alkyl and aryl C-substituted pyrrole, an N-alkylpyrrole and an N-arylpyrrole, said strong oxidant being a cation selected from the group consisting of Fe 3+ , Cu 2+ , Ce 4+ , NO + , NO 2 + and (C 6 H 5 ) 3 C + cations, and 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 21
Dependent Claim
39 words
The process of claim 18, said oxidant and said non-nucleophilic anion being provided by a compound selected from the group consisting of ferric perchlorate, ferric chloride, ceric sulfate, cupric fluoborate, cupric perchlorate, nitrosyl hexafluorophosphate, ferric ethylbenzenesulfonate and ferric dodecylbenzenesulfonate.
Claim 22
Dependent Claim
38 words
The process of claim 18, said oxidant being present in the range of about 0.001 to about 2 molar, and said non-nucleophilic anion being present in a concentration in the range from about 0.001 to about 2 molar.
Claim 23
Dependent Claim
26 words
The process of claim 20, said substance being a fabric selected from the group consisting of fiberglass fabric, mixed oxide fabric and a synthetic organic fabric.
Claim 24
Dependent Claim
10 words
The process of claim 21, said substance being fiberglass fabric.
Claim 25
Dependent Claim
13 words
The process of claim 1, wherein said dielectric substrate is a non-porous substrate.
Claim 26
Dependent Claim
13 words
The process of claim 17, wherein said dielectric substance is a non-porous substance.
References Cited (Backward Citations)
US4521450A
Cited
US4567250A
Cited
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) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |