US4640749A
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Electrically conductive pyrrole copolymers and their preparation
Assignee: BASF SE
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Filing: 1985-05-07
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Granted: 1987-02-03
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Expires: 2005-05-07
Abstract
Abstract Highly electrically conductive copolymers of pyrroles and alkynes and/or aromatics, which possess good mechanical properties coupled with a well-balanced spectrum of properties, are prepared by anodic polymerization of the pyrroles and alkynes and/or aromatics in a polar solvent in the presence of a suitable conductive salt.
Inventors
- 👤 Herbert Naarmann
- 👤 Gernot Koehler
- 👤 Johannes Schlag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:17
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/8305
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
67 words
An electrically conductive copolymer characterized by a capability for being converted from a p-conductive to an n-conductive system, and wherein said copolymer is obtained by the anodic oxidation of a pyrrole monomer and one or more comonomers selected from the group consisting of an alkyne and an aromatic, with the weight ratio of pyrrole units to comonomer units being in the range of from 20:80 to 90:10.
Claim 2
Dependent Claim
67 words
An electrically conductive copolymer characterized by a capability for being converted from a p-conductive to an n-conductive system, and wherein said copolymer is obtained by the anodic oxidation of a pyrrole monomer and one or more comonomers selected from the group consisting of an alkyne and an aromatic, with the weight ratio of pyrrole units to comonomer units being in the range of from 20:80 to 90:10.
Claim 3
Dependent Claim
17 words
A copolymer as defined in claim 1, wherein the pyrrole units are essentially based on unsubstituted pyrrole.
Claim 4
Dependent Claim
13 words
A copolymer as defined in claim 1, which contains acetylene as copolymerized units.
Claim 5
Dependent Claim
19 words
A copolymer as defined in claim 1, which contains oligophenylenes or polynuclear fused aromatic ring systems as copolymerized units.
Claim 6
Dependent Claim
18 words
A copolymer as claimed in claim 1, which, contains 5-membered non-benzoid aromatic hydrocarbon ring systems as copolymerized units.
Claim 7
Dependent Claim
15 words
A copolymer as claimed in claim 1, which contains azulene or indene as copolymerized units.
Claim 8
Dependent Claim
13 words
A copolymer as defined in claim 1, wherein the comonomers are randomly distributed.
Claim 9
Dependent Claim
47 words
A process for the preparation of an electrically conductive copolymer which comprises: copolymerizing a pyrrole and an alkyne, a pyrrole and an aromatic or a pyrrole, an alkyne and an aromatic by anodic oxidation in a polar solvent and in the presence of a suitable conductive salt.
Claim 10
Dependent Claim
47 words
A process for the preparation of an electrically conductive copolymer which comprises: copolymerizing a pyrrole and an alkyne, a pyrrole and an aromatic or a pyrrole, an alkyne and an aromatic by anodic oxidation in a polar solvent and in the presence of a suitable conductive salt.
Claim 11
Dependent Claim
14 words
The process of claim 8, wherein the components of the copolymer are polymerized together.
Claim 12
Dependent Claim
19 words
The process of claim 8, wherein the components of the copolymer are polymerized in succession to form the copolymer.
Claim 13
Dependent Claim
23 words
The process of claim 8, wherein the pyrrole is first polymerized alone and an alkyne is then polymerized onto the resulting polypyrrole film.
Claim 14
Dependent Claim
23 words
The process of claim 8, wherein the pyrrole is first polymerized alone and an aromatic is then polymerized onto the resulting polypyrrole film.
Claim 15
Dependent Claim
26 words
The process of claim 8, wherein the pyrrole is first polymerized alone and both an alkyne and aromatic are then polymerized onto the resulting polypyrrole film.
Claim 16
Dependent Claim
14 words
The process of claim 8, wherein the anode used is an electrically conductive polyalkyne.
Claim 17
Dependent Claim
14 words
The process of claim 8, wherein the anode used is an electrically conductive polyaromatic.
Claim 18
Dependent Claim
12 words
The process of claim 8, wherein the anode used is a polypyrrole.
Claim 19
Dependent Claim
40 words
The process of claim 8, wherein pyrroles are polymerized by anodic oxidation in a polar solvent and in the presence of a suitable conductive salt, and an electrically conductive polyalkyne or an electrically conductive polyaromatic is used as the anode.
Claim 20
Dependent Claim
66 words
The process of claim 8, wherein the conductive salt used is an ionic or ionizable compound possessing an anion from the group consisting of BF 4 - , AsF 4 - , AsF 6 - , SbF 6 - , SbCl 6 - , PF 6 - , ClO 4 - , HSO 4 - , CH 3 SO 4 - and SO 4 -2 .
Claim 21
Dependent Claim
19 words
The process of claim 8, wherein the conductive salt used is a salt of an aromatic possessing acidic groups.
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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |