US4488987A
Expired / Lapsed
US
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Doped polymeric organic electrical conductors and a process for their manufacture
Assignee: Bayer AG
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Filing: 1982-11-22
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Granted: 1984-12-18
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Expires: 2002-11-22
Abstract
Abstract Increasing the electrical conductivity of conjugated polymers by partial oxidation (doping) with a compound of tetravalent titanium or tetravalent tin.
Inventors
- 👤 Jurgen Hocker
- 👤 Rolf Dhein
- 👤 Rudolf Merten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:14
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/125; H01B1/127; H01B1/128
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A process for increasing the electrical conductivity in a conjugated organic polymer selected from the group consisting of polyacetylene, polyphenylene, polyphenylene sulphide, polypyrrole and polythiophene which comprises oxidizing said conjugated organic polymer with a salt of tetravalent titanium or tin which is soluble in an organic solvent or readily sublimable and is present in an amount of from 0.1 to 200% by weight, based on said conjugated organic polymer, at a temperature of -80° to 200° C.
Claim 2
Dependent Claim
77 words
A process for increasing the electrical conductivity in a conjugated organic polymer selected from the group consisting of polyacetylene, polyphenylene, polyphenylene sulphide, polypyrrole and polythiophene which comprises oxidizing said conjugated organic polymer with a salt of tetravalent titanium or tin which is soluble in an organic solvent or readily sublimable and is present in an amount of from 0.1 to 200% by weight, based on said conjugated organic polymer, at a temperature of -80° to 200° C.
Claim 3
Dependent Claim
37 words
A process of claim 1, wherein said conjugated organic polymer is suspended in a liquid selected from the group consisting of methanol, ethanol, propanol, i-propanol, acetonitrile, acetone, dimethylformamide, N-methylpyrrolidone, sulphone, hexamethylphosphoric acid trisamide, propylene carbonate and nitromethane.
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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |