US4148639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insensitive electroconductive polymers
Assignee: ECC SPECIALTY CHEMICALS Inc
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Filing: 1978-01-27
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Granted: 1979-04-10
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Expires: 1998-01-27
Abstract
Abstract Copolymers of a cationic electroconductive monomer and a crosslinkable monomer. These polymers are electroconductive and become water-insensitive after being applied to a substrate.
Inventors
- 👤 Gloria D. Sinkovitz
- 👤 Kenneth W. Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:56
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/105; G03G5/107; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
An electroconductive paper which contains a layer of a coating composition which contains a water-insensitive copolymer of a cationic monomer selected from the group consisting of methacrylamidopropyltrimethylammonium chloride, methacryloxyethyl trimethylammonium chloride, methacryloxyethyl trimethylammonium methosulfate, 2-hydroxy-3-methacryloxypropyl trimethylammonium chloride, quaternized 4-vinylpyridine and a crosslinable comonomer.
Claim 2
Dependent Claim
43 words
An electroconductive paper which contains a layer of a coating composition which contains a water-insensitive copolymer of a cationic monomer selected from the group consisting of methacrylamidopropyltrimethylammonium chloride, methacryloxyethyl trimethylammonium chloride, methacryloxyethyl trimethylammonium methosulfate, 2-hydroxy-3-methacryloxypropyl trimethylammonium chloride, quaternized 4-vinylpyridine and a crosslinable comonomer.
Claim 3
Dependent Claim
26 words
An electroconductive paper as in claim 1 wherein the copolymer is present in a concentration of at least 0.1 pound per 3000 square feet of paper.
Claim 4
Dependent Claim
16 words
An electroconductive paper as in claim 1 wherein the polymer containing layer also contains a binder.
Claim 5
Dependent Claim
16 words
An electroconductive paper as in claim 3 wherein the polymer containing layer also contains a pigment.
Claim 6
Dependent Claim
17 words
An electroconductive paper as in claim 1 wherein the polymer is physically blended with an inorganic salt.
Claim 7
Dependent Claim
15 words
An electroconductive paper as in claim 1 wherein the paper also contains a dielectric layer.
Claim 8
Dependent Claim
15 words
An electroconductive paper as in claim 1 wherein the paper also contains a photoconductive layer.
Claim 9
Independent Claim
54 words
A method of making electroconductive paper which comprises coating said paper with at least 0.1 pound per 3000 square feet of a water-insensitive copolymer of a catonic monomer selected from the group consisting of methacrylamidopropyltrimethylammonium chloride, methacryloxyethyl trimethylammonium chloride, methacryloxyethyl trimethylammonium methosulfate, 2-hydroxy-3-methacryloxypropyl trimethylammonium chloride, vinylbenzyl trimethylammonium chloride, quaternized 4-vinylpyridine and a crosslinkable comonomer.
Claim 10
Independent Claim
54 words
A method of making electroconductive paper which comprises coating said paper with at least 0.1 pound per 3000 square feet of a water-insensitive copolymer of a catonic monomer selected from the group consisting of methacrylamidopropyltrimethylammonium chloride, methacryloxyethyl trimethylammonium chloride, methacryloxyethyl trimethylammonium methosulfate, 2-hydroxy-3-methacryloxypropyl trimethylammonium chloride, vinylbenzyl trimethylammonium chloride, quaternized 4-vinylpyridine and a crosslinkable comonomer.
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) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |