US4803096A
Expired / Lapsed
US
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Electrically conductive textile materials and method for making same
Assignee: Milliken and Co
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Filing: 1987-08-03
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Granted: 1989-02-07
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Expires: 2007-08-03
Abstract
Abstract Fabrics are made electrically conductive by contacting the fabric under agitation conditions with an aqueous solution of a pyrrole or aniline compound, and an oxidizing agent and a doping agent or counter ion; and then epitaxially depositing onto the surface of the individual fibers of said fabric the in status nascendi forming polymer of the pyrrole or aniline compound so as to uniformly and coherently cover the fibers with an ordered conductive film of the polymerized pyrrole or aniline compound. Individual fibers and yarns can be similarly treated and then formed into fabrics. Products made by the process are also described.
Inventors
- 👤 Hans H. Kuhn
- 👤 William C. Kimbrell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:22
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M11/00; D06M11/07; D06M11/11; D06M11/28; D06M11/32; D06M11/50; D06M15/687; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01B1/128
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
164 words
A method for imparting electrical conductivity to a textile material, which comprises contacting the textile material with an aqueous solution of an oxidatively polymerizable compound, selected from a pyrrole compound and an aniline compound, and an oxidizing agent capable of oxidizing said compound to a polymer, said contacting being carried out in the presence of a counter ion which imparts electrical conductivity to said polymer when fully formed, said contacting being under conditions at which the compound and the oxidizing agent react with each other to form a prepolymer in said aqueous solution before either the compound or the oxidizing agent are adsorbed by, or deposited on or in, the textile material, but without forming a conductive polymer, per se, in said aqueous solution; adsorbing onto the surface of said textile material the prepolymer and allowing the adsorbed prepolymer to polymerize while adsorbed on said textile material so as to uniformly and coherently cover the textile material with a conductive film of said polymer.
Claim 2
Independent Claim
164 words
A method for imparting electrical conductivity to a textile material, which comprises contacting the textile material with an aqueous solution of an oxidatively polymerizable compound, selected from a pyrrole compound and an aniline compound, and an oxidizing agent capable of oxidizing said compound to a polymer, said contacting being carried out in the presence of a counter ion which imparts electrical conductivity to said polymer when fully formed, said contacting being under conditions at which the compound and the oxidizing agent react with each other to form a prepolymer in said aqueous solution before either the compound or the oxidizing agent are adsorbed by, or deposited on or in, the textile material, but without forming a conductive polymer, per se, in said aqueous solution; adsorbing onto the surface of said textile material the prepolymer and allowing the adsorbed prepolymer to polymerize while adsorbed on said textile material so as to uniformly and coherently cover the textile material with a conductive film of said polymer.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said oxidatively polymerizable compound is pyrrole which is present in said solution in an amount from 0.01 to 5 grams per liter.
Claim 4
Dependent Claim
28 words
The method of claim 1 wherein said oxidatively polymerizable compound is aniline which is present in said solution in an amount from 0.02 to 10 grams per liter.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said textile material comprises a knitted, woven, or non-woven fibrous textile fabric.
Claim 6
Dependent Claim
31 words
The method of claim 4 wherein the fibers of said fabric are uniformly and coherently covered with said conductive film to a thickness of from about 0.05 to about 2 microns.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein said textile fabric is selected from woven or knitted fabrics.
Claim 8
Dependent Claim
15 words
The process of claim 6 wherein said textile fabric is constructed of continuous filament yarns.
Claim 9
Dependent Claim
23 words
The process of claim 7 wherein said textile fabric comprises synthetic fibers selected from the group consisting of polyester, nylon and acrylic fibers.
Claim 10
Dependent Claim
22 words
The process of claim 7 wherein said textile fabric comprises high modulus fibers selected from aromatic polyester, aromatic polyamide and polybenzimidazole fibers.
Claim 11
Dependent Claim
20 words
The process of claim 7 wherein said textile material comprises high modulus inorganic fibers selected from glass and ceramic fibers.
Claim 12
Dependent Claim
22 words
The process of claim 4 wherein said treated textile fabric has a resistivity from about 50 to about 500,000 ohms per square.
Claim 13
Dependent Claim
18 words
The process of claim 1 wherein said textile material is or is comprised of basic dyeable polyester fibers.
Claim 14
Dependent Claim
16 words
The process of claim 1 wherein said textile material comprises a wound yarn, filament or fiber.
Claim 15
Dependent Claim
33 words
The process of claim 2 wherein said pyrrole compound is a pyrrole monomer selected from the group consisting of pyrrole, a 3- and 3,4-alkyl or aryl substituted pyrrole, N-alkyl pyrrole and N-aryl pyrrole.
Claim 16
Dependent Claim
19 words
The process of claim 1 wherein said pyrrole compound is pyrrole, N-methylpyrrole or a mixture of pyrrole and N-methylpyrrole.
Claim 17
Dependent Claim
17 words
A process of claim 3 where the aniline compound is a chloro-, bromo-, alkyl- or aryl-substituted aniline.
Claim 18
Dependent Claim
12 words
The process of claim 1 wherein said oxidant is Fe +3 .
Claim 19
Dependent Claim
17 words
The process of claim 1 wherein said oxidant is a peroxide, persulfate, perborate, permanganate, peracid or chromate.
Claim 20
Dependent Claim
10 words
The process of claim 18 wherein said oxidant is persulfate.
Claim 21
Dependent Claim
40 words
The process of claim 19 wherein said counter ion is an anionic counter ion selected from the group consisting of chloride, perchlorate, sulfate, bisulfate, sulfonate, sulfonic acid, fluoroborate, PF 6 -, A 5 F 6 - and SbF 6 -.
Claim 22
Dependent Claim
24 words
The process of claim 19 wherein said counter ion is derived from a benzenesulfonic acid or a naphthalenesulfonic acid or a water-soluble salt thereof.
Claim 23
Dependent Claim
32 words
An electrically conductive textile material which is the product of the process of claim 1, having a resistivity in the range of from about 50 to about 10 6 ohms per square.
Claim 24
Dependent Claim
21 words
The electrically conductive material of claim 22 which is a fabric comprised of fibers, filaments or yarns of polyester or polyamide.
Claim 25
Dependent Claim
26 words
The electrically conductive material of claim 22 wherein the pyrrole compound is pyrrole and the polypyrrole film has a thickness of less than about 1 micron.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |