Patent US4308332A successfully refreshed from Google Patents.
US4308332A
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Conductive latex compositions, elements and processes
Assignee: Eastman Kodak Co
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Filing: 1980-05-01
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Granted: 1981-12-29
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Expires: 2000-05-01
Abstract
Abstract A coating composition useful in forming conductive layers comprises a latex having water as a continuous phase and, as a dispersed phase, hydrophobic polymer particles having associated therewith a polyaniline salt semiconductor. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming antistatic layers for photographic elements or conducting layers for electrophotographic and electrographic elements. Also disclosed is a preferred process for preparing a latex coating composition comprising the steps of loading polymer particles with the polyaniline component of the polyaniline acid addition salt semiconductor and then acidifying the latex to form a polyaniline salt coating composition.
Inventors
- 👤 Donald A. Upson
- 👤 David J. Steklenski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:48
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C09; C09D; C09D175/00; C09D175/04; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3882; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
In a photographic element comprising a support having coated thereon (a) at least one radiation-sensitive layer and (b) a conductive layer comprising a coalesced, cationically stabilized latex binder and a semiconductor, the improvement wherein said semiconductor is associated with the polymer particles of said latex and said semiconductor is a polyaniline acid addition salt.
Claim 2
Dependent Claim
54 words
In a photographic element comprising a support having coated thereon (a) at least one radiation-sensitive layer and (b) a conductive layer comprising a coalesced, cationically stabilized latex binder and a semiconductor, the improvement wherein said semiconductor is associated with the polymer particles of said latex and said semiconductor is a polyaniline acid addition salt.
Claim 3
Dependent Claim
17 words
A photographic element according to claim 1 wherein said radiation-sensitive layer comprises a photographic silver salt emulsion.
Claim 4
Dependent Claim
16 words
An element according to claim 1 wherein said conductive layer is coated with a protective layer.
Claim 5
Dependent Claim
29 words
An element according to claim 1 wherein said protective layer comprises a polymer selected from the group consisting of poly(n-butyl acrylate-co-styrene), poly(n-butyl acrylate-co-methyl methacrylate), poly(n-butyl methacrylate-co-styrene) and poly(methyl methacrylate).
Claim 6
Dependent Claim
19 words
An element according to claim 1 wherein the weight ratio of latex to polyaniline is between 4:1 and 10:1.
Claim 7
Dependent Claim
25 words
An element according to claim 1 wherein the polyaniline of said polyaniline salt is selected from the group consisting of: N-{p-[4-(p-methoxyanilino)anilino]phenyl}-1,4-benzoquinone imine and N-{p-[p-(anilino)anilino]phenyl}-1,4-benzoquinone diimine.
Claim 8
Dependent Claim
16 words
An element according to claim 1 wherein said polyaniline salt is the phosphoric acid addition salt.
Claim 9
Dependent Claim
18 words
An element according to claim 1 wherein said coalesced latex comprises cationically stabilized, coalesced, substantially linear, polyurethane urea.
Claim 10
Dependent Claim
20 words
An element according to claim 1 wherein said coalesced latex comprises coalesced particles of poly(N-butylmethacrylate-co-vinylbenzyl chloride) (90/10) quaternized with trimethylamine.
Claim 11
Dependent Claim
50 words
In an electrographic element comprising a support having coated thereon a conductive layer and an outermost dielectric layer, the improvement wherein said conductive layer comprises a coalesced, cationically stabilized latex binder and a polyaniline acid addition salt semiconductor, wherein said semiconductor is associated with the polymer particles of said latex.
Claim 12
Dependent Claim
50 words
In an electrographic element comprising a support having coated thereon a conductive layer and an outermost dielectric layer, the improvement wherein said conductive layer comprises a coalesced, cationically stabilized latex binder and a polyaniline acid addition salt semiconductor, wherein said semiconductor is associated with the polymer particles of said latex.
Claim 13
Dependent Claim
15 words
An element according to claim 10 wherein said dielectric layer further comprises a matting agent.
Claim 14
Dependent Claim
25 words
An element according to claim 10 wherein the polyaniline of said polyaniline salt is selected from the group consisting of: N-{p-[4-(p-methoxyanilino)anilino]phenyl}-1,4-benzoquinone imine and N-{p-[p-(anilino)anilino]phenyl}-1,4-benzoquinone diimine.
Claim 15
Dependent Claim
16 words
An element according to claim 10 wherein said polyaniline salt is a phosphoric acid addition salt.
Claim 16
Dependent Claim
17 words
An element according to claim 10 wherein said latex binder comprises cationically stabilized, substantially linear polyurethane urea.
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) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |