US4237194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive polyanaline salt-latex compositions, elements and processes
Assignee: Eastman Kodak Co
•
Filing: 1979-02-16
•
Granted: 1980-12-02
•
Expires: 1999-02-16
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 18:05
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3882; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C09; C09D; C09D175/00; C09D175/04; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/19; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/931; Y10S57/00; Y10S57/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/8305
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
In an element comprising a support having thereon a conductive layer comprising a coalesced, cationically stabilized latex and a semiconductor, the improvement wherein said latex and said semiconductor are chosen so that said semiconductor is associated with said latex before coalescing and said semiconductor is a polyaniline acid addition salt.
Claim 2
Dependent Claim
50 words
In an element comprising a support having thereon a conductive layer comprising a coalesced, cationically stabilized latex and a semiconductor, the improvement wherein said latex and said semiconductor are chosen so that said semiconductor is associated with said latex before coalescing and said semiconductor is a polyaniline acid addition salt.
Claim 3
Dependent Claim
16 words
An element according to claim 1 wherein said conductive layer is coated with a protective layer.
Claim 4
Dependent Claim
29 words
An element according to claim 2 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 5
Dependent Claim
20 words
An element according to claim 1 wherein the weight ratio of latex to polyaniline component is between 4:1 and 10:1.
Claim 6
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 7
Dependent Claim
16 words
An element according to claim 1 wherein said polyaniline salt is the phosphoric acid addition salt.
Claim 8
Dependent Claim
18 words
An element according to claim 1 wherein said coalesced latex comprises cationically stabilized, coalesced, substantially linear, polyurethane urea.
Claim 9
Dependent Claim
20 words
An element according to claim 2 wherein said coalesced latex comprises coalesced particles of poly(N-butylmethacrylate-co-vinylbenzyl chloride) (90/10) quaternized with trimethylamine.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |