US4037017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroconductive paper
Assignee: Hercules LLC
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Filing: 1975-12-08
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Granted: 1977-07-19
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Expires: 1995-12-08
Abstract
Abstract Disclosed is electroconductive paper adapted particularly for use in the manufacture of paper used in the electrophotographic reproduction of images.
Inventors
- 👤 William Walter Maslanka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:48
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/105; G03G5/107; C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
In a electroconductive paper base sheet comprising a cellulosic web having disposed on at least one surface thereof an electroconductive layer the improvement wherein the electroconductive layer consists essentially of an electroconductive resin consisting essentially of the diquaternary chloride of the reaction product of (1) a water soluble or water dispersible poly(alkyldiallylamine)-epichlorohydrin base resin having epoxide moieties and (2) a tertiary amine having the formula R 1 R 2 R 3 N where R 1 and R 2 and R 3 are the same or different alkyls having from 1 through 9 carbon atoms in an amount at least stoichiometrically equivalent to the epoxide moieties of the base resin.
Claim 2
Dependent Claim
109 words
In a electroconductive paper base sheet comprising a cellulosic web having disposed on at least one surface thereof an electroconductive layer the improvement wherein the electroconductive layer consists essentially of an electroconductive resin consisting essentially of the diquaternary chloride of the reaction product of (1) a water soluble or water dispersible poly(alkyldiallylamine)-epichlorohydrin base resin having epoxide moieties and (2) a tertiary amine having the formula R 1 R 2 R 3 N where R 1 and R 2 and R 3 are the same or different alkyls having from 1 through 9 carbon atoms in an amount at least stoichiometrically equivalent to the epoxide moieties of the base resin.
Claim 3
Dependent Claim
21 words
The electroconductive paper base sheet of claim 1 wherein the tertiary amine employed in preparation of the electroconductive resin is trimethylamine.
Claim 4
Dependent Claim
21 words
The electroconductive paper base sheet of claim 1 wherein poly(alkyldiallylamine) is a homopolymer of methyldiallylamine and the tertiary amine is trimethylamine.
References Cited (Backward Citations)
US3544318A
Cited
US3515707A
Cited
US3640766A
Cited
US3833531A
Cited
US3787235A
Cited
US3887496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |