US4478922A
Expired / Lapsed
US
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Electrically conductive compositions
Assignee: Eastman Kodak Co
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Filing: 1983-11-21
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Granted: 1984-10-23
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Expires: 2003-11-21
Abstract
Abstract Compositions comprising a polymer and dendrite crystals of a salt consisting of the cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiole-2-ylidene)-4,5-dihydronaphtho [1,2-d]-1,3-dithiole and an anion are useful in forming conductive coatings.
Inventors
- 👤 Jerome H. Perlstein
- 👤 Neil F. Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:22
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/16; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03G; G03G5/00; G03G5/10; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/122; Y10S430/123
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
An electrographic element having a conductive layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form of dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8-tetracyanoquinodimethane, ClO 4 - , BF 4 - , PF 6 - , F - , Cl - , I - , and I 3 - .
Claim 2
Dependent Claim
82 words
An electrographic element having a conductive layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form of dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8-tetracyanoquinodimethane, ClO 4 - , BF 4 - , PF 6 - , F - , Cl - , I - , and I 3 - .
Claim 3
Dependent Claim
84 words
A photographic element having an antistatic layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form of dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8 - tetracyanoquinodimethane, ClO 4 - , BF 4 - , PF 6 - , F - , Cl - , I - , and I 3 - .
Claim 4
Dependent Claim
84 words
A photographic element having an antistatic layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form of dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8 - tetracyanoquinodimethane, ClO 4 - , BF 4 - , PF 6 - , F - , Cl - , I - , and I 3 - .
Claim 5
Dependent Claim
83 words
An electrophotographic element having a conductive layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8 - tetracyanoquinodimethane, ClO 4 - , BF 4 - , PF 6 - , F - , Cl - , I - , and I 3 - .
Claim 6
Dependent Claim
83 words
An electrophotographic element having a conductive layer comprising an electrically insulating polymer and a charge transfer complex characterized in that the charge transfer complex is (a) in the form dendrite crystals throughout the polymer and (b) is a salt consisting of a cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiol-2-ylidene)-4,5-dihydronaphtho[1,2-d]-1,3-dithiole and an anion selected from the group consisting of 7,7,8,8 - tetracyanoquinodimethane, ClO 4 - , BF 4 - , PF 6 - , F - , Cl - , I - , and I 3 - .
Claim 7
Dependent Claim
28 words
An element as in claims 1, 2 or 3 in which the anion is selected from the group consisting of 7,7,8,8 - tetracyanoquinodimethane and ClO 4 - .
Claim 8
Dependent Claim
26 words
An element as in claims 1, 2 or 3 in which the electrically insulating polymer is selected from the group consisting of polycarbonates, polyesters and polysulfones.
Claim 9
Dependent Claim
33 words
An element is in claims 1, 2 or 3 in which the electrically insulating polymer is selected from the group consisting of poly(4,4'-isopropylidenediphenylene carbonate), poly(oxy-1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenyleneisopropylidene-1,4-phenylene), poly[ethylene-co-isopropylidenebis-(1,4-phenyleneoxy-ethylene)-terephthalate], poly(vinyl butyral), and poly(n-butylmethacrylate-co-p-styrenesulfonic acid potassium salt).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |