US3887496A
Expired / Lapsed
US
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Quaternary ammonium electroconductive resin coating compositions
Assignee: Dow Chemical Co
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Filing: 1972-08-02
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Granted: 1975-06-03
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Expires: 1992-08-02
Abstract
Abstract An improved electroconductive resin composition is obtained by using a water-dispersible, film-forming acrylamide polymer as a binder and extender for a water-soluble quaternary ammonium electroconductive resin. Particularly useful is a self-binding blend of about 65-95 wt. % polyvinylbenzyltrimethylammonium chloride and about 5-35 wt. % nonhydrolyzed polyacrylamide which can be formulated as an aqueous dispersion with clay or other printing pigments. Applied to a nonmetallic substrate, such as paper or an organic polymer film, the improved electroconductive resin composition reduces the surface electrical resistivity of the substrate and also provides improved holdout to aromatic and aliphatic solvents.
Inventors
- 👤 Sally P Cornier
- 👤 Ben A Tefertiller
- 👤 Richard J Dolinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:51
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; D21H19/62; G; G03; G03G; G03G5/00; G03G5/10; G03G5/101; G03G5/105; C; C08; C08L; C08L33/00; C08L33/24; C08L33/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
AN IMPROVED AQUEOUS ELECTROCONDUCTIVE RESIN COATING COMPOSITION CONTAINING AS ESSENTIAL ELEMENT: A. A WATER-SOLUBLE QUATERNARY AMMONIUM ELECTROCONDUCTIVE RESIN, AND B. ABOUT 0.05-0.50 PARTS, BASED ON THE WEIGHT OF THE ELECTROCONDUCTIVE RESIN, OF A WATER-DISPERSIBLE, SUBSTANTIALLY NONIONIC ACRYLAMIDE POLYMER COMTAINING AT LEAST 20 WT. % POLYMERIZED ACRYLAMIDE AND HAVING A 0.5 WT. % AQUEOUS SOLUTION VISCOSITY OF LESS THAN ABOUT 5.0CPS AT PH 5-6 AND 25*C.
Claim 2
Dependent Claim
65 words
AN IMPROVED AQUEOUS ELECTROCONDUCTIVE RESIN COATING COMPOSITION CONTAINING AS ESSENTIAL ELEMENT: A. A WATER-SOLUBLE QUATERNARY AMMONIUM ELECTROCONDUCTIVE RESIN, AND B. ABOUT 0.05-0.50 PARTS, BASED ON THE WEIGHT OF THE ELECTROCONDUCTIVE RESIN, OF A WATER-DISPERSIBLE, SUBSTANTIALLY NONIONIC ACRYLAMIDE POLYMER COMTAINING AT LEAST 20 WT. % POLYMERIZED ACRYLAMIDE AND HAVING A 0.5 WT. % AQUEOUS SOLUTION VISCOSITY OF LESS THAN ABOUT 5.0CPS AT PH 5-6 AND 25*C.
Claim 3
Dependent Claim
66 words
An improved aqueous electroconductive resin coating composition containing as essential elements: A. A water-soluble quaternary ammonium electroconductive resin, and B. About 0.05-0.50 parts, based on the weight of the electroconductive resin, of a water-dispersible, substantially nonionic acrylamide polymer containing at least 20 wt. % polymerized acrylamide and having a 0.5 wt. % aqueous solution viscosity of less than about 5.0 cps at pH 5-6 and 25*C.
Claim 4
Dependent Claim
66 words
An improved aqueous electroconductive resin coating composition containing as essential elements: A. A water-soluble quaternary ammonium electroconductive resin, and B. About 0.05-0.50 parts, based on the weight of the electroconductive resin, of a water-dispersible, substantially nonionic acrylamide polymer containing at least 20 wt. % polymerized acrylamide and having a 0.5 wt. % aqueous solution viscosity of less than about 5.0 cps at pH 5-6 and 25*C.
Claim 5
Dependent Claim
26 words
The electroconductive resin composition of claim 1 wherien the quaternary ammonium resin is water-soluble poly(vinylbenzyl quaternary ammonium chloride), poly(diallyldimethylammonium chloride), quaternized polyethylenimine, or quaternized polyepichlorohydrin resin.
Claim 6
Dependent Claim
18 words
The electroconductive resin composition of claim 1 wherein the quaternary ammonium resin is a water-soluble poly(vinylbenzyltrimethylammonium chloride) resin.
Claim 7
Dependent Claim
45 words
The electroconductive resin composition of claim 1 where the acrylamide polymer is a homopolymer of acrylamide with a degree of hydrolysis less than about 5 percent and a 0.5 wt. % aqueous solution viscosity of about 1.4 to 5.0 cps at pH 5-6 and 25*C.
Claim 8
Dependent Claim
24 words
The electroconductive resin composition of claim 1 where the acrylamide polymer is a copolymer of acrylamide and at least one nonionic monomer copolymerizable therewith.
Claim 9
Dependent Claim
56 words
The electroconductive resin composition of claim 5 where the acrylamide polymer is a copolymer of about 20-95 wt. % acrylamide and about 80-5 wt. % of a nonionic monomer copolymerizable therewith and selected from the group consisting of styrene, vinyl acetate, acrylonitrile, methacrylonitrile, vinyl alkyl ether, vinyl chloride, vinylidene chloride, alkyl acrylate, alkyl methacrylate, and methacrylamide.
Claim 10
Dependent Claim
27 words
The electroconductive resin composition of claim 6 where the acryalmide polymer is a wateR-dispersible polymer of about 30-95 wt. % acrylamide and about 70-5 wt. % styrene.
Claim 11
Dependent Claim
27 words
The electroconductive resin composition of claim 6 where the acrylamide polymer is a water-dispersible polymer of about 75-95 wt. % acrylamide and about 25-5 wt. % acrylonitrile.
Claim 12
Dependent Claim
28 words
The electroconductive resin composition of claim 6 where the acrylamide polymer is a water-dispersible polymer of about 75-95 wt. % acrylamide and about 25-5 wt. % vinyl acetate.
References Cited (Backward Citations)
US2616818A
Cited
US2661309A
Cited
US2945775A
Cited
US3011918A
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US3320317A
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US3544318A
Cited
US3489663A
Cited
US3479215A
Cited
US3620828A
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US3607989A
Cited
US3640766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |