US4724062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical coating of carbon fibers
Assignee: BASF SE
•
Filing: 1986-08-25
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Granted: 1988-02-09
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Expires: 2006-08-25
Abstract
Abstract A layer of electrically conductive polymers is applied by a process in which carbon fibers of filaments or sheet-like structures of carbon fibers or filaments are coated with sulfonic acids of phthalocyanines or porphyrins, the filaments treated in this manner are made the anode in a solution which contains monomers from the class consisting of the 5-membered heterocycles, and the monomers are anodically polymerized so that a conductive layer is formed on the fibers, filaments or sheet-like structures.
Inventors
- 👤 Herbert Naarmann
- 👤 Franz Haaf
- 👤 Gerhard Fahrbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:13
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/10; D01F11/14; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; D01F11/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
A process for applying a layer of an electrically conductive polymer to fibers, filaments or sheet-like structures, wherein a solution of a sulfonic acid of a phthalocyanine or porphyrin is applied to carbon fibers or filaments or sheet-like structures of carbon fibers or filaments, the fibers, filaments or sheet-like structures are then dried, so that they are coated with a layer of the sulfonic acid of the phthalocyanine or porphyrin, and the coated material is then made the anode in a solution which contains monomers from the class consisting of the 5-membered heterocycles containing nitrogen or sulfur as a heteroatom, and the monomers are anodically polymerized.
Claim 2
Dependent Claim
106 words
A process for applying a layer of an electrically conductive polymer to fibers, filaments or sheet-like structures, wherein a solution of a sulfonic acid of a phthalocyanine or porphyrin is applied to carbon fibers or filaments or sheet-like structures of carbon fibers or filaments, the fibers, filaments or sheet-like structures are then dried, so that they are coated with a layer of the sulfonic acid of the phthalocyanine or porphyrin, and the coated material is then made the anode in a solution which contains monomers from the class consisting of the 5-membered heterocycles containing nitrogen or sulfur as a heteroatom, and the monomers are anodically polymerized.
Claim 3
Dependent Claim
19 words
The process of claim 1, wherein a sulfonic acid of Cu, Co, Zn, Ni or Pd phthalocyanine is used.
Claim 4
Dependent Claim
12 words
The process of claim 1, wherein the monomer is pyrrole or thiophene.
References Cited (Backward Citations)
US3574072A
Cited
US4272346A
Cited
US4401545A
Cited
US4547270A
Cited
US4578433A
Cited
US4582575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |