US4526706A
Expired / Lapsed
US
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Conductive latex compositions, elements and processes
Assignee: Eastman Kodak Co
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Filing: 1981-07-30
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Granted: 1985-07-02
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Expires: 2001-07-30
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 05:37
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C09; C09D; C09D175/00; C09D175/04; G03C; G03C7/00; G03C7/30; G03C7/388; G03C7/3882
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
31 words
A coating composition comprising a latex having water as a continuous phase and, as a dispersed phase, cationically stabilized, hydrophobic polymer particles having associated therewith a polyaniline acid addition salt semiconductor.
Claim 2
Dependent Claim
31 words
A coating composition comprising a latex having water as a continuous phase and, as a dispersed phase, cationically stabilized, hydrophobic polymer particles having associated therewith a polyaniline acid addition salt semiconductor.
Claim 3
Dependent Claim
17 words
A coating composition according to claim 1 wherein said hydrophobic polymer particles are loaded with said semiconductor.
Claim 4
Dependent Claim
29 words
A coating composition according to claim 1 wherein the weight ratio of the hydrophobic polymer particles to the imine of said polyaniline salt semiconductor is between 4:1 and 10.1.
Claim 5
Dependent Claim
18 words
A coating composition according to claim 1 having a weight percent solids between 0.2 percent and 15 percent.
Claim 6
Dependent Claim
27 words
A coating composition according to claim 1 wherein the polyaniline of said polyaniline salt semiconductor 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
A coating composition of claim 1 wherein said polyaniline salt is the phosphoric acid addition salt.
Claim 8
Dependent Claim
19 words
A coating composition according to claim 1 wherein said hydrophobic polymer particles comprise cationically stabilized, substantially linear, polyurethane urea.
Claim 9
Dependent Claim
22 words
A coating composition according to claim 1 wherein said hydrophobic polymer particles are particles of poly(n-butyl methacrylate-co-vinylbenzyl chloride) (90/10) quaternized with trimethylamine.
Claim 10
Dependent Claim
120 words
A process for preparing a coating composition comprising a latex having water as a continuous phase and, as a dispersed phase, cationically stabilized, hydrophobic polymer particles having associated therewith a polyaniline acid addition salt semiconductor, said process comprising the steps of: (a) forming a solution by dissolving a polyaniline in a water-miscible organic solvent; (b) forming a latex by dispersing cationically stabilized, hydrophobic loadable polymer particles in an aqueous continuous phase; (c) blending said latex with said solution; (d) loading said polymer particles by removing said organic solvent thereby forming a polyaniline-loaded latex; and (e) forming a polyaniline salt-loaded latex by adding sufficient acid to said polyaniline-loaded latex to convert substantially all of said polyaniline-loaded latex to polyaniline salt-loaded latex.
Claim 11
Dependent Claim
120 words
A process for preparing a coating composition comprising a latex having water as a continuous phase and, as a dispersed phase, cationically stabilized, hydrophobic polymer particles having associated therewith a polyaniline acid addition salt semiconductor, said process comprising the steps of: (a) forming a solution by dissolving a polyaniline in a water-miscible organic solvent; (b) forming a latex by dispersing cationically stabilized, hydrophobic loadable polymer particles in an aqueous continuous phase; (c) blending said latex with said solution; (d) loading said polymer particles by removing said organic solvent thereby forming a polyaniline-loaded latex; and (e) forming a polyaniline salt-loaded latex by adding sufficient acid to said polyaniline-loaded latex to convert substantially all of said polyaniline-loaded latex to polyaniline salt-loaded latex.
Claim 12
Dependent Claim
20 words
A process according to claim 9 wherein said organic solvent is removed in step (d) by evaporation under reduced pressure.
Claim 13
Dependent Claim
24 words
A process according to claim 9 wherein said acid is added in step (e) at a ratio of 1:1 to 10:1 moles acid/mole polyaniline.
Claim 14
Dependent Claim
25 words
A process according to claim 9 wherein said water-miscible organic solvent is selected from the group consisting of alcohols, ketones, amides, tetrahydrofuran, N-methyl-2-pyrrolidone and dimethylsulfoxide.
Claim 15
Dependent Claim
13 words
A process according to claim 9 wherein said water-miscible organic solvent is acetone.
Claim 16
Dependent Claim
24 words
A process according to claim 9 wherein said polyaniline in step (a) 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 17
Dependent Claim
12 words
A process according to claim 9 wherein said acid is phosphoric acid.
Claim 18
Dependent Claim
18 words
A process according to claim 9 wherein said hydrophobic polymer particles comprise cationically stabilized, substantially linear, polyurethane urea.
Claim 19
Dependent Claim
20 words
A process according to claim 9 wherein said hydrophobic polymer particles are particles of poly(N-butylmethacrylate-co-vinylbenzyl chloride) (90/10) quaternized with trimethylamine.
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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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |