US4344870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of electrically conductive hetero-polyaromatics
Assignee: BASF SE
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Filing: 1981-02-24
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Granted: 1982-08-17
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Expires: 2001-02-24
Abstract
Abstract A process for the preparation of electrically conductive hetero-polyaromatics, having conductivities greater than 10 -2 S/cm, wherein from 0.5 to 35 percent by weight of a strong Lewis acid having a pk a of from -10 to +4, preferably AsF 5 , SbF 5 , UF 6 , HClO 4 , NO + SbF 6 - , NO + AsF 6 - , NO + PF 6 - , NO 2 +PF 6 - , NO +BF 4 - , NO 2 +BF 4 - , NO + ClO 4 - , (CF 3 ) 2 SO 4 , 2,4,6-trinitrophenol, 2,4,6-trinitrophenylsulfonic acid or 2,4,6-trinitrobenzoic acid, is added to a hetero-polyaromatic in the absence of moisture and of oxygen.
Inventors
- 👤 Gerd Blinne
- 👤 Herbert Naarmann
- 👤 Klaus Penzien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; H10; H10K; H10K85/00; H10K85/10; H10K85/111; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/549
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
A process for the preparation of electrically conductive hetero-polyaromatics having conductivities greater than 10 -2 S/cm which comprises: adding to a hetero-polyaromatic of the formula ##STR8## ps or the formula [K-X].sub.m II where X is SO 2 , S, O, NH, Se or ##STR9## K is naphthalene, anthracene, perylene or coronene, m is from 1 to 5, preferably from 1 to 2, and n is from 5 to 1,000, preferably from 5 to 500, in the absence of moisture and of oxygen, from 0.5 to 35 percent by weight, based on the weight of the hetero-polyaromatic, of a strong Lewis acid having a pk a of from -10 to +4.
Claim 2
Dependent Claim
110 words
A process for the preparation of electrically conductive hetero-polyaromatics having conductivities greater than 10 -2 S/cm which comprises: adding to a hetero-polyaromatic of the formula ##STR8## ps or the formula [K-X].sub.m II where X is SO 2 , S, O, NH, Se or ##STR9## K is naphthalene, anthracene, perylene or coronene, m is from 1 to 5, preferably from 1 to 2, and n is from 5 to 1,000, preferably from 5 to 500, in the absence of moisture and of oxygen, from 0.5 to 35 percent by weight, based on the weight of the hetero-polyaromatic, of a strong Lewis acid having a pk a of from -10 to +4.
Claim 3
Dependent Claim
87 words
The process of claim 3, wherein the Lewis acid used is AsF 5 , SbF 5 , UF 6 , HClO 4 , NO + SbF 6 - , NO 2 + SbF 6 - , NO + AsF 6 - , NO + PF 6 - , NO 2 + PF 6 - , NO + BF 4 - , NO 2 + BF 4 - , NO + ClO 4 - , (CF 3 ) 2 SO 4 , 2,4,6-trinitrophenol, 2,4,6-trinitrophenylsulfonic acid or 2,4,6-trinitrobenzoic acid.
Claim 4
Dependent Claim
11 words
The process of claim 1, wherein X is S or O.
Claim 5
Dependent Claim
17 words
The process of claim 3, wherein m is 1 to 2 and n is 5 to 500.
Claim 6
Dependent Claim
23 words
An electrically conductive hetero-polyaromatic having a conductivity greater than 10 -2 S/cm and produced by the process of claim 1 or claim 2.
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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |