US4459222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conducting polymers
Assignee: Honeywell UOP LLC
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Filing: 1982-05-11
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Granted: 1984-07-10
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Expires: 2002-05-11
Abstract
Abstract Although poly(nitrilo-1,4-phenylene nitrilomethylidine-1,4-phenylene methylidine) is an insulator, it can be doped with both electron acceptors and electron donors to afford p- and n-type semiconductors. The iodine doped material is more stable in air than many prior art conducting polymers.
Inventors
- 👤 David W. House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:02
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
52 words
A method of preparing an electrically conducting polymeric composition comprising contacting poly(nitrilo- 1,4-phenylene nitrilomethylidine-1,4-phenylene methylidine) with an electron acceptor or electron donor dopant in an amount, sufficient to increase electrical conductivity, from about 0.1 to about 3.5 mole ratio dopant per repeating unit of the polymer, and recovering the resulting doped polymer.
Claim 2
Independent Claim
52 words
A method of preparing an electrically conducting polymeric composition comprising contacting poly(nitrilo- 1,4-phenylene nitrilomethylidine-1,4-phenylene methylidine) with an electron acceptor or electron donor dopant in an amount, sufficient to increase electrical conductivity, from about 0.1 to about 3.5 mole ratio dopant per repeating unit of the polymer, and recovering the resulting doped polymer.
Claim 3
Dependent Claim
13 words
The method of claim 1 where the electron donor dopant is sodium naphthalide.
Claim 4
Dependent Claim
45 words
The method of claim 1 where the dopant is selected from the group consisting of bromine, iodine, SbF 5 , AsF 5 , PF 5 , AgClO 4 , NO 2 X, and NOX where X is SbF 6 - or BF 4 - .
Claim 5
Dependent Claim
40 words
An electrically conducting polymeric composition comprising poly(nitrilo-1,4-phenylene nitrilomethylidine-1,4-phenylene methylidine) and an electron donor or electron acceptor dopant in an amount, sufficient to increase electrical conductivity, from about 0.1 to about 3.5 mole ratio dopant per repeating unit of the polymer.
Claim 6
Dependent Claim
40 words
An electrically conducting polymeric composition comprising poly(nitrilo-1,4-phenylene nitrilomethylidine-1,4-phenylene methylidine) and an electron donor or electron acceptor dopant in an amount, sufficient to increase electrical conductivity, from about 0.1 to about 3.5 mole ratio dopant per repeating unit of the polymer.
Claim 7
Dependent Claim
13 words
The composition of claim 4 where the electron acceptor dopant is sodium naphthalide.
Claim 8
Dependent Claim
45 words
The composition of claim 4 where the dopant is selected from the group consisting of bromine, iodine, SbF 5 , AsF 5 , PF 5 , AgClO 4 , NO 2 X, and NOX where X is SbF 6 - or BF 4 - .
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) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |