US4024311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroconductive paper coating
Assignee: International Paper Co
•
Filing: 1975-10-30
•
Granted: 1977-05-17
•
Expires: 1995-10-30
Abstract
Abstract Reaction products between monomeric epichlorohydrin and a tertiary amine when applied to the surface of a substrate, such as paper, produce an electroconductive surface useful in electrographic image reproduction. Both a coated paper product and a process of producing it are provided.
Inventors
- 👤 Donald M. MacDonald
- 👤 Lee H. Deed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:07
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/101; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31511; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982; Y10T428/31993
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
58 words
An electroconductive product suitable for electrographic image reproduction comprising a substrate having on at least a portion of a surface thereof a coating comprising the reaction products of a tertiary amine and monomeric epichlorohydrin reacted in a mole ratio of 1 to 2:1 and at a temperature of at least about 70° C up to about 100° C.
Claim 2
Dependent Claim
58 words
An electroconductive product suitable for electrographic image reproduction comprising a substrate having on at least a portion of a surface thereof a coating comprising the reaction products of a tertiary amine and monomeric epichlorohydrin reacted in a mole ratio of 1 to 2:1 and at a temperature of at least about 70° C up to about 100° C.
Claim 3
Dependent Claim
20 words
An electroconductive product according to claim 1 wherein the tertiary amine has a pKb of between about 2.5 and 9.
Claim 4
Dependent Claim
15 words
An electroconductive product according to claim 1 wherein the tertiary amine is a trialkyl amine.
Claim 5
Dependent Claim
13 words
An electroconductive product according to claim 1 wherein the tertiary amine is trimethylamine.
Claim 6
Dependent Claim
13 words
An electroconductive product according to claim 1 wherein the tertiary amine is dimethylcyclohexylamine.
Claim 7
Dependent Claim
13 words
An electroconductive product according to claim 1 wherein the tertiary amine is N,N-tetramethylethylenediamine.
Claim 8
Dependent Claim
13 words
An electroconductive product according to claim 1 wherein the tertiary amine is pyridine.
Claim 9
Dependent Claim
29 words
An electroconductive product according to claim 1 wherein the reaction products are present in an amount of at least about 0.05 pounds per 1,000 square feet of substrate surface.
Claim 10
Dependent Claim
12 words
An electroconductive product according to claim 1 wherein the substrate is paper.
Claim 11
Dependent Claim
23 words
An electroconductive product according to claim 1 wherein the said reaction products are bound to said substrate by means of a film-forming polymer.
Claim 12
Dependent Claim
37 words
An electroconductive product according to claim 10 wherein the film-forming polymer is a member selected from the class consisting of sodium silicate, polyvinyl alcohol, ethylated starch, enzyme converted starch, styrene-butadiene, polyvinyl acetate, vinyl-ethylene copolymer, and globular protein.
Claim 13
Dependent Claim
17 words
An electroconductive product according to claim 10 wherein the said film-forming polymer is present as a precoat.
Claim 14
Dependent Claim
15 words
An electroconductive product according to claim 10 wherein said film-forming polymer is an acrylic latex.
Claim 15
Dependent Claim
17 words
An electroconductive product according to claim 1 wherein said mole ratio is between about 1.1 and 1.2:1.
Claim 16
Dependent Claim
14 words
An electroconductive product according to claim 1 wherein said mole ratio is about 1.13:1.
Claim 17
Dependent Claim
30 words
An electroconductive product according to claim 1 wherein said reaction products are present in an amount of between about 0.05 and 0.5 pounds per 1,000 square feet of substrate surface.
References Cited (Backward Citations)
US3011918A
Cited
US3320317A
Cited
US3428680A
Cited
US3642663A
Cited
US3293115A
Cited
US3625684A
Cited
US3640766A
Cited
US3798032A
Cited
US3900319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |