US4411826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of stable electrically conductive polymers
Assignee: BASF SE
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Filing: 1982-01-29
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Granted: 1983-10-25
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Expires: 2002-01-29
Abstract
Abstract Stable electrically conductive polymers having conductivities greater than 10-2 S/cm are prepared by heating p-doped polyacetylenes, in the absence of oxygen and moisture, for from 0.1 to 3 hours, preferably from 0.5 to 1.0 hour, at from 500 DEG to 1,100 DEG C., preferably from 550 DEG to 850 DEG C. The electrically conductive polymers obtained can be used in the electrical industry for the production of solar cells, for the utilization and fixing of radiation, for the production of electrical and magnetic switches and stores, and for the antistatic treatment of plastics.
Inventors
- 👤 Herbert Naarmann
- 👤 Klaus Penzien
- 👤 Johannes Schlag
- 👤 Petr Simak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:36
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C08F8/50; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/125; H10; H10K; H10K85/00; H10K85/10; H10K85/141; H10K85/143; H10K99/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/549
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A process for the preparation of electrically conductive polymers of improved stability with conductivities greater than 10 -2 S/cm which comprises: doping a polyacetylene with from 15 to 66% by weight, based on the polyacetylene, of an electron acceptor dopant to give p-type conductors having conductivities greater than 10 -2 S/cm, wherein the improvement comprises heating the p-doped polyacetylene in the absence of oxygen and moisture for from 0.1 to 3 hours at from 500° to 1,100° C.
Claim 2
Dependent Claim
78 words
A process for the preparation of electrically conductive polymers of improved stability with conductivities greater than 10 -2 S/cm which comprises: doping a polyacetylene with from 15 to 66% by weight, based on the polyacetylene, of an electron acceptor dopant to give p-type conductors having conductivities greater than 10 -2 S/cm, wherein the improvement comprises heating the p-doped polyacetylene in the absence of oxygen and moisture for from 0.1 to 3 hours at from 500° to 1,100° C.
Claim 3
Dependent Claim
15 words
The process of claim 1, wherein heating is effected for from 0.5 to 1.0 hour.
Claim 4
Dependent Claim
15 words
The process of claim 1, wherein heating is effected at from 550° to 850° C.
References Cited (Backward Citations)
DE2219350C3
Cited
US4222903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |