Patent US608714A successfully refreshed from Google Patents.
Patent US4529538A successfully refreshed from Google Patents.
US4529538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive polymer compositions
Assignee: United States Department of the Navy
•
Filing: 1983-08-09
•
Granted: 1985-07-16
•
Expires: 2003-08-09
Abstract
Abstract A conductive polymer composite system is made by dissolving an electron donating polymer and a simple or complex N-methylphenazinium TCNQ salt in a mutual solvent and casting a film of the resulting solution on a suitable substrate.
Inventors
- 👤 Oh-Kim Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:05
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
71 words
An electrically conductive polymeric composition comprising an electron donating polymer having an ionization potential of about 8-12 eV which is selected from the group consisting of polycarbonate, poly(vinyl butyral), poly(methyl methacrylate) and polyesters, and about 20-90 weight percent of an N-methylphenazinum TCNQ salt wherein said composition is prepared by steps comprising: dissolving said N-methylphenazinium TCNQ salt and said polymer in a mutual solvent to form a solution; and removing said solvent.
Claim 2
Dependent Claim
71 words
An electrically conductive polymeric composition comprising an electron donating polymer having an ionization potential of about 8-12 eV which is selected from the group consisting of polycarbonate, poly(vinyl butyral), poly(methyl methacrylate) and polyesters, and about 20-90 weight percent of an N-methylphenazinum TCNQ salt wherein said composition is prepared by steps comprising: dissolving said N-methylphenazinium TCNQ salt and said polymer in a mutual solvent to form a solution; and removing said solvent.
Claim 3
Dependent Claim
12 words
The composition of claim 1 comprising 30-60 weight percent N-methylphenazinium TCNQ salt.
Claim 4
Dependent Claim
16 words
The composition of claim 2 wherein the ionization potential of said polymer is about 9-11 eV.
Claim 5
Dependent Claim
45 words
The composition of claim 3 wherein the ratio of neutral TCNQ to TCNQ-- in said solution is about 0.3 to 1.6, wherein TCNQ-- represents the radical anion of said N-methylphenazinium TCNQ salt and wherein the only TCNQ salt present in said solution is N-methylphenzinium TCNQ.
Claim 6
Dependent Claim
21 words
The composition of claim 1 wherein said polymer is selected from the group consisting of polycarbonate, poly(vinyl butyral), and poly(methyl methacrylate).
Claim 7
Dependent Claim
10 words
The composition of claim 5 wherein said polymer is polycarbonate.
Claim 8
Dependent Claim
16 words
The composition of claim 6 wherein the ratio of neutral TCNQ to TCNQ-- is about 0.7-1.3.
Claim 9
Dependent Claim
16 words
The composition of claim 7 wherein the ratio of neutral TCNQ to TCNQ-- is about 0.9-1.1.
Claim 10
Dependent Claim
11 words
The composition of claim 5 wherein said polymer is poly(vinyl butyral).
Claim 11
Dependent Claim
16 words
The composition of claim 9 wherein the ratio of neutral TCNQ to TCNQ-- is about 0.7-1.3.
Claim 12
Dependent Claim
16 words
The composition of claim 10 wherein the ratio of neutral TCNQ to TCNQ-- is about 0.9-1.1.
Claim 13
Dependent Claim
11 words
The composition of claim 5 wherein said polymer is poly(methyl methacrylate).
Claim 14
Dependent Claim
16 words
The composition of claim 12 wherein the ratio of neutral TCNQ to TCNQ-- is about 0.7-1.3.
Claim 15
Dependent Claim
16 words
The composition of claim 13 wherein the ratio of neutral TCNQ to TCNQ-- is about 0.9-1.1.
Claim 16
Independent Claim
101 words
A method of preparing a conductive polymeric composition having a desired resistivity, the steps of which comprise: dissolving a film-forming polymer having an ionization potential of about 8-12 eV which is selected from the group consisting of polycarbonate, poly(vinyl butyral), poly(methyl methacrylate) and polyesters, and 20-90 weight percent, based on the weight of said polymer of N-methylphenazinium TCNQ salt in a neutral solvent to form a solution; adding a non-zero quantity of neutral TCNQ to said solution, said quantity being such that said composition prepared from said solution has said desired resistivity; casting a film from said solution upon a substrate.
Claim 17
Independent Claim
101 words
A method of preparing a conductive polymeric composition having a desired resistivity, the steps of which comprise: dissolving a film-forming polymer having an ionization potential of about 8-12 eV which is selected from the group consisting of polycarbonate, poly(vinyl butyral), poly(methyl methacrylate) and polyesters, and 20-90 weight percent, based on the weight of said polymer of N-methylphenazinium TCNQ salt in a neutral solvent to form a solution; adding a non-zero quantity of neutral TCNQ to said solution, said quantity being such that said composition prepared from said solution has said desired resistivity; casting a film from said solution upon a substrate.
Claim 18
Dependent Claim
31 words
The method of claim 15 wherein said dissolving step comprises the step of dissolving 30-60 weight percent, based on the weight of said composition, of an N-methylphenazinium salt in said solvent.
Claim 19
Dependent Claim
24 words
The method of claim 16 further comprising the step of selecting said polymer from the group consisting of polycarbonate, poly(vinyl butyral) and poly(methyl methacrylate).
Claim 20
Dependent Claim
16 words
The method of claim 17 wherein said selecting step comprises the step of selecting poly(vinyl butrayl).
Claim 21
Independent Claim
92 words
A method of preparing a conductive polymeric composition, the steps of which comprise; dissolving polycarbonate and 20-50 weight percent of an N-methylphenazinium salt in a mutual solvent to form a solution; adding a non-zero quantity of neutral TCNQ to said solution; casting a film from said solution upon a substrate, wherein said quantity of neutral TCNQ in said solution is at least about an amount equal to that which results in said film having the maximum conductivity possible for said film given the composition of said solution prior to said adding step.
Claim 22
Independent Claim
92 words
A method of preparing a conductive polymeric composition, the steps of which comprise; dissolving polycarbonate and 20-50 weight percent of an N-methylphenazinium salt in a mutual solvent to form a solution; adding a non-zero quantity of neutral TCNQ to said solution; casting a film from said solution upon a substrate, wherein said quantity of neutral TCNQ in said solution is at least about an amount equal to that which results in said film having the maximum conductivity possible for said film given the composition of said solution prior to said adding step.
Claim 23
Dependent Claim
59 words
A conductive polymeric composition comprising a fully interconnected network of fine filaments of an N-methylphenazinium salt, each filament being fully covered along its axis by a layer of a flexible, insulating polymer, wherein said insulating polymer has an ionization potential of about 8-12 eV and is selected from the group consisting of polycarbonate, poly(vinyl butyral), poly(methyl methacrylate) and polyesters.
Claim 24
Dependent Claim
59 words
A conductive polymeric composition comprising a fully interconnected network of fine filaments of an N-methylphenazinium salt, each filament being fully covered along its axis by a layer of a flexible, insulating polymer, wherein said insulating polymer has an ionization potential of about 8-12 eV and is selected from the group consisting of polycarbonate, poly(vinyl butyral), poly(methyl methacrylate) and polyesters.
Claim 25
Dependent Claim
19 words
The polymeric composition of claim 20 wherein the ionization potential of said flexible, insulating polymer is about 9-11 eV.
Claim 26
Dependent Claim
26 words
The polymeric composition of claim 21 wherein said flexible, insulating polymer comprises a polymer chosen from the group consisting of polycarbonate, poly(vinylbutyral), poly(methyl methacrylate), and polyester.
Claim 27
Dependent Claim
13 words
The polymeric composition of claim 22 comprising 20-90 weight percent N-methylphenazinium TCNQ salt.
References Cited (Backward Citations)
US3162641A
Cited
US3679944A
Cited
US3966987A
Cited
US3996987A
Cited
US4293452A
Cited
US4359411A
Cited
US4374048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |