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US4567250A
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Preparation of finely divided electrically conductive pyrrole polymers
Assignee: BASF SE
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Filing: 1984-07-18
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Granted: 1986-01-28
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Expires: 2004-07-18
Abstract
Abstract Finely divided electrically conductive pyrrole polymers are prepared by a process in which the pyrroles, in solution and in the presence of a conductive salt, are treated with an oxygen-containing oxidizing agent. The finely divided conductive pyrrole polymers can be used for the production of moldings.
Inventors
- 👤 Herbert Naarmann
- 👤 Walter Heckmann
- 👤 Gernot Kohler
- 👤 Petr Simak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
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; C08G73/00; C08G73/06; C08G73/0605; C08G73/0611
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
63 words
A process for the preparation of a finely divided electrically conductive pyrrole polymer, wherein monomers from the class consisting of the pyrroles, in solution and in the presence of a conductive salt, are treated with an oxygen-containing oxidizing agent at a temperature of 0°-100° C. and at a concentration of not less than 1 mole of conductive salt per 3 moles of monomer.
Claim 2
Dependent Claim
63 words
A process for the preparation of a finely divided electrically conductive pyrrole polymer, wherein monomers from the class consisting of the pyrroles, in solution and in the presence of a conductive salt, are treated with an oxygen-containing oxidizing agent at a temperature of 0°-100° C. and at a concentration of not less than 1 mole of conductive salt per 3 moles of monomer.
Claim 3
Dependent Claim
29 words
A process according to claim 1, wherein the oxidizing agent used is a peroxo acid or one of its salts, or hydrogen peroxide, or peroxoborates or peroxochromates or permanganates.
Claim 4
Dependent Claim
32 words
A process according to claim 1 wherein the pyrroles comprise pyrrole, N-alkylpyrroles, N-arylpyrroles, pyrroles substituted at the carbon atoms with monoalkyl or dialkyl, and pyrroles monohalogenated or dihalogenated at the carbon atoms.
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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |