US4749451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical coating of carbon fibers
Assignee: BASF SE
•
Filing: 1987-02-05
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Granted: 1988-06-07
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Expires: 2007-02-05
Abstract
Abstract Electroconductive coats are applied by a process wherein the anode and the cathode of an electrolysis bath are composed of carbon fibers, filaments or sheetlike structures therefrom and the electrolyte solution contains a monomer and a conductive salt, the monomer being oxidized at the anode and deposited on the anode as a polymer and the conducting salt used containing a metal as cation, so that the metal is reduced and deposited on the cathode.
Inventors
- 👤 Herbert Naarmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:29
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C25; C25D; C25D13/00; C25D13/12; C25D13/16; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
In the production of electrodes for batteries, a process for applying an electroconductive coat to carbon fibers or filaments or sheetlike structures therefrom by anodic oxidation of a monomer of the class of the 5-membered heterocycles which contain nitrogen or sulfur ad the heteroatom or of the class of the anilines in the presence of a conducting salt and of an electrolyte solvent with deposition of the electroconductive polymer on the anode and by reduction of the cation of the conducting salt with deposition of the metal on the cathode, wherein both the anode and the cathode are composed of electrically conductive carbon fibers, filaments or sheetlike structures therefrom and the conducting salt contains a metallic cation.
Claim 2
Dependent Claim
117 words
In the production of electrodes for batteries, a process for applying an electroconductive coat to carbon fibers or filaments or sheetlike structures therefrom by anodic oxidation of a monomer of the class of the 5-membered heterocycles which contain nitrogen or sulfur ad the heteroatom or of the class of the anilines in the presence of a conducting salt and of an electrolyte solvent with deposition of the electroconductive polymer on the anode and by reduction of the cation of the conducting salt with deposition of the metal on the cathode, wherein both the anode and the cathode are composed of electrically conductive carbon fibers, filaments or sheetlike structures therefrom and the conducting salt contains a metallic cation.
Claim 3
Dependent Claim
21 words
A process as claimed in claim 1, wherein the cation is an alkali metal, alkaline earth metal or heavy metal cation.
Claim 4
Dependent Claim
32 words
A process as claimed in claim 1, wherein the sheetlinke anode and cathode are passed continuously in parallel through a solution or a dispersion which contains the monomer and the conducting salt.
References Cited (Backward Citations)
GB467024A
Cited
US3902976A
Cited
US4050996A
Cited
US4130465A
Cited
US4155816A
Cited
US4401545A
Cited
US4468291A
Cited
US4547270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |