Patent US3966987A successfully refreshed from Google Patents.
US3966987A
Expired / Lapsed
US
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Electroconductive high polymer composition
Assignee: International Flavors and Fragrances Inc
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Filing: 1975-04-08
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Granted: 1976-06-29
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Expires: 1995-04-08
Abstract
Abstract A high polymer composition consisting essentially of a nitrogen-containing organic high polymer, such as polyvinylpyridine, polyvinylquinoline, polyacrylonitrile, or polyvinylcarbazole, and 20-90% by weight of a 7,7,8,8-tetracyanoquinodimethane complex salt of N-methylacridinium. The composition has an electric conductivity of 10.sup. -2 mho/cm or more and is useful, among others, as a semiconductor layer of a solid electrolytic capacitor.
Inventors
- 👤 Tetsuo Suzuki
- 👤 Katsuhiro Mizoguchi
- 👤 Fumio Togo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:59
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121; C; C08; C08K; C08K5/00; C08K5/0091; C08K5/16; C08K5/34
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A high polymer composition which consists essentially of a polymer selected from the group consisting of polyvinylpyridine, polyvinylquinoline, polyacrylonitrile and polyvinylcarbazole and 20 - 90% by weight of a 7,7,8,8-tetracyanoquinodimethane complex salt of N-methylacridinium and has an electric conductivity of at least 10 - 2 mho/cm.
Claim 2
Dependent Claim
46 words
A high polymer composition which consists essentially of a polymer selected from the group consisting of polyvinylpyridine, polyvinylquinoline, polyacrylonitrile and polyvinylcarbazole and 20 - 90% by weight of a 7,7,8,8-tetracyanoquinodimethane complex salt of N-methylacridinium and has an electric conductivity of at least 10 - 2 mho/cm.
Claim 3
Dependent Claim
16 words
A high polymer composition as claimed in Claim 1, wherein said polyvinylpyridine is poly-4-vinylpyridine or poly-2-vinylpyridine.
Claim 4
Dependent Claim
14 words
A high polymer composition as claimed in claim 1, wherein said polyvinylquinoline is poly-2-vinylquinoline.
Claim 5
Dependent Claim
14 words
A high polymer composition as claimed in claim 1, wherein said polyvinylcarbazole is poly-N-vinylcarbazole.
References Cited (Backward Citations)
US3346444A
Cited
US3424698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |