US4985124A
Expired / Lapsed
US
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Electrically conducting polyheteroaromatics and a process for their preparation
Assignee: Bayer AG
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Filing: 1989-03-31
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Granted: 1991-01-15
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Expires: 2009-03-31
Abstract
Abstract The invention relates to a process for the preparation of electrically conducting polyheteroaromatics by electrochemical oxidation of monomers of heteroaromatic compounds in electrolyte systems containing water, surfactants and/or co-surfactants with deposition of the polyheteroaromatics on the surface of the anode, characterized in that the electrolyte system is a microemulsion consisting of monomeric compound, water, surfactant and co-surfactant.
Inventors
- 👤 Uwe Claussen
- 👤 Udo Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:14
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
In a process for the preparation of an electrically conducting polyheteroaromatic by electrochemically oxidizing the monomeric heteroaromatic compound in an electrolyte cell comprising an anode, a cathode and a liquid electrolyte system which electrolyte system contains the monomeric heteroaromatic compound, water, a surfactant, a co-surfactant or a mixture of a surfactant and a co-surfactant with depositing of the polyheteroaromatic on the surface of the anode, the improvement which comprises using as the electrolyte system a microemulsion which is formed by the monomeric compound, the water, the surfactant and the co-surfactant.
Claim 2
Dependent Claim
90 words
In a process for the preparation of an electrically conducting polyheteroaromatic by electrochemically oxidizing the monomeric heteroaromatic compound in an electrolyte cell comprising an anode, a cathode and a liquid electrolyte system which electrolyte system contains the monomeric heteroaromatic compound, water, a surfactant, a co-surfactant or a mixture of a surfactant and a co-surfactant with depositing of the polyheteroaromatic on the surface of the anode, the improvement which comprises using as the electrolyte system a microemulsion which is formed by the monomeric compound, the water, the surfactant and the co-surfactant.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the surfactant is an anionic surfactant.
Claim 4
Dependent Claim
30 words
The process of claim 1 wherein the water content of the microemulsion is in the range from 40 to 80% by weight, relative to the total weight of the microemulsion.
Claim 5
Dependent Claim
27 words
The process of claim 1 wherein the co-surfactant content in the surfactant/co-surfactant mixture is 8 to 80% by weight, relative to the weight of the surfactant/co-surfactant mixture.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the monomeric compound is pyrrole.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |