Patent US4359411A successfully refreshed from Google Patents.
US4359411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible semiconductive polymers
Assignee: United States Department of the Navy
•
Filing: 1980-10-03
•
Granted: 1982-11-16
•
Expires: 2000-10-03
Abstract
Abstract An electrically conductive polymeric composition is fabricated by dispers polymeric ether complexes of TCNQ salts within a flexible, thermoplastic polymer matrix. The compositions form flexible, homogeneous, films which exhibit substantially superior properties over currently available TCNQ salt based systems.
Inventors
- 👤 Oh-Kil Kim
- 👤 Robert B. Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:20
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
78 words
A flexible, film-forming, electrically conductive polymeric composition consisting of a thermoplastic polymer matrix having dispersed therein an effective amount of a complex represented by the formula: [E·(M.sup.n+)][TCNQ ].sub.n TCNQ°.sub.m wherein n is 1 or 2, m is o or 1, TCNQ is 7,7,8,8 tetracyanoquinodimethane, M is an alkali metal, alkaline earth metal, or ammonium, and E is a polymeric ether selected from the class consisting of poly(ethylene oxide), polyoxethane, polytetrahydrofuran, poly(vinyl ethers), polyphenylene oxide, polydioxalan, and mixtures thereof.
Claim 2
Dependent Claim
78 words
A flexible, film-forming, electrically conductive polymeric composition consisting of a thermoplastic polymer matrix having dispersed therein an effective amount of a complex represented by the formula: [E·(M.sup.n+)][TCNQ ].sub.n TCNQ°.sub.m wherein n is 1 or 2, m is o or 1, TCNQ is 7,7,8,8 tetracyanoquinodimethane, M is an alkali metal, alkaline earth metal, or ammonium, and E is a polymeric ether selected from the class consisting of poly(ethylene oxide), polyoxethane, polytetrahydrofuran, poly(vinyl ethers), polyphenylene oxide, polydioxalan, and mixtures thereof.
Claim 3
Dependent Claim
25 words
The composition of claim 1 wherein the thermoplastic polymer matrix is selected from the group consisting of polymethylmethacrylate, polyacrylonitrile, polycarbonate, polystyrene, polyvinylacetal and mixtures thereof.
Claim 4
Dependent Claim
26 words
A composition as claimed in claim 2 wherein M is selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, calcium, strontium, barium, and ammonium.
Claim 5
Dependent Claim
13 words
The composition of claim 2 wherein said polymeric ether is poly (ethylene oxide).
Claim 6
Dependent Claim
26 words
The composition of claim 3 wherein said complex is present in said matrix in an amount of at least 10 weight percent of total composition weight.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein M is potassium or ammonium.
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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |