US4452725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable electrically conducting polymers and method of making
Assignee: HONEYWELL INC., AND THE UNIVERSITY OF MINNESOTA, MINNEAOLIS, MN A CORP. OF DE
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Filing: 1982-09-21
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Granted: 1984-06-05
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Expires: 2002-09-21
Abstract
Abstract An electrically conducting polymer is disclosed which includes poly(N-alkyl 3',3 carbazolyl) at least a portion of which is doped with a compatible charge transfer acceptor to provide p-type electrical conductivity, and in which the alkyl group is one selected from the group consisting of ethyl and methyl or a combination thereof.
Inventors
- 👤 Stephen T. Wellinghoff
- 👤 Samson A. Jenekhe
- 👤 Thomas J. Kedrowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:00
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; C08G73/00; C08G73/06; C08G73/0622; C08G73/0627; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; H01G; H01G9/00; H01G9/20; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
An electrically conducting polymer comprising poly(N-alkyl 3',3 carbazolyl) doped with a compatible charge transfer acceptor to provide electrical conductivity, wherein said alkyl group is selected from the group consisting of ethyl and methyl or a combination thereof and wherein said charge transfer acceptor is selected from the group consisting of I 2 , Br 2 , Cl 2 , F 2 , TCNQ, DDQ, NO + BF 4 - , chloranil and protic acids selected from the group consisting of HI, HBr, HCl, HF, H 2 SO 4 , HClO 4 , and CCl 3 COOH, or a combination thereof.
Claim 2
Dependent Claim
100 words
An electrically conducting polymer comprising poly(N-alkyl 3',3 carbazolyl) doped with a compatible charge transfer acceptor to provide electrical conductivity, wherein said alkyl group is selected from the group consisting of ethyl and methyl or a combination thereof and wherein said charge transfer acceptor is selected from the group consisting of I 2 , Br 2 , Cl 2 , F 2 , TCNQ, DDQ, NO + BF 4 - , chloranil and protic acids selected from the group consisting of HI, HBr, HCl, HF, H 2 SO 4 , HClO 4 , and CCl 3 COOH, or a combination thereof.
Claim 3
Dependent Claim
30 words
An electrically conducting polymer according to claim 1 wherein polymer is polymerized to a molecular weight which renders it non-brittle and allows melt casting and extrusion without change in properties.
Claim 4
Dependent Claim
14 words
An electrically conductive polymer according to claim 1 wherein said electrical conductivity is p-type.
Claim 5
Dependent Claim
19 words
An electrically conductive polymer according to either one of claims 1 or 2 wherein said alkyl group is methyl.
Claim 6
Dependent Claim
15 words
An electrically conducting polymer according to claim 1 wherein said dopant is I 2 .
Claim 7
Dependent Claim
15 words
An electrically conducting polymer according to claim 4 wherein said dopant is I 2 .
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |