US4566955A
Expired / Lapsed
US
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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 a finely divided pyrrole polymer, obtained by polymerization of pyrroles in solution with an oxygen-containing oxidizing agent, is electrochemically charged in the presence of a conductive salt. The finely divided electrically conductive pyrrole polymers can be used for the production of moldings.
Inventors
- 👤 Herbert Naarmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; C08G73/00; C08G73/06; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A process for preparing a finely-divided electrically conductive pyrrole polymer comprising the following sequential steps: (A) carrying out a solution polymerization of an unsubstituted or substituted pyrrole monomer taken either alone or in an admixture with one another in the presence of from about 0.2 to 10 moles of an oxygen-containing oxidizing agent per mole of pyrrole monomer to produce a finely-divided pyrrole polymer, and (B) effecting an electrochemical charging of said pyrrole polymer in a non-aqueous electrolyte system in the presence of a conductive salt, with said electrochemical charging being conducted at a current density of from 0.01 to 10 mA/cm 2 , a voltage of from 0.1 to 100 V, and over a time period of from about 0.1 to 30 hours.
Claim 2
Dependent Claim
124 words
A process for preparing a finely-divided electrically conductive pyrrole polymer comprising the following sequential steps: (A) carrying out a solution polymerization of an unsubstituted or substituted pyrrole monomer taken either alone or in an admixture with one another in the presence of from about 0.2 to 10 moles of an oxygen-containing oxidizing agent per mole of pyrrole monomer to produce a finely-divided pyrrole polymer, and (B) effecting an electrochemical charging of said pyrrole polymer in a non-aqueous electrolyte system in the presence of a conductive salt, with said electrochemical charging being conducted at a current density of from 0.01 to 10 mA/cm 2 , a voltage of from 0.1 to 100 V, and over a time period of from about 0.1 to 30 hours.
Claim 3
Dependent Claim
23 words
A process as claimed in claim 1, wherein the finely divided pyrrole polymer is electrochemically charged in the presence of a non-aqueous electrolyte.
References Cited (Backward Citations)
US4401545A
Cited
US4468291A
Cited
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 |