US3968320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye solvents for pressure-sensitive record material
Assignee: Monsanto Co
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Filing: 1973-08-30
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Granted: 1976-07-06
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Expires: 1993-08-30
Abstract
Abstract Benzyl aryl ethers are useful solvents for chromogenic materials in preparing pressure-sensitive record material wherein a colorless or substantially colorless chromogen is reacted in the presence of a benzyl aryl ether solvent with an acidic sensitizing material to form a colored mark in a pattern determined by the application of localized pressure to the record material. The benzyl aryl ether solvents are heat stable and give particularly fast color development on phenolic resin coated papers.
Inventors
- 👤 John F. Herber
- 👤 James K. Sears
- 👤 Quentin E. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:57
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; B41M5/1655; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3167
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
148 words
A pressure-sensitive recording paper system comprising a. a supporting web or sheet material, b. mark forming components arranged in contiguous juxtaposition and supported by said sheet material, said components comprising a chromogenic material and an electron accepting material of the Lewis acid type reactive with said chromogenic material to produce a mark when brought into reactive contact, and c. a pressure releasable liquid solvent for said chromogenic mark forming component, said solvent comprising a benzyl aryl ether represented by the structure ##SPC1## wherein Ar is an aryl radical selected from the group consisting of phenyl, tolyl, and xylenyl; R 1 , R 3 and R 4 are individually hydrogen or an alkyl group having from 1 to 4 carbon atoms; and R 2 is hydrogen or from 1 to 4 alkyl groups, alike or unlike, the total carbon atom content of R 2 being not greater than 6.
Claim 2
Dependent Claim
148 words
A pressure-sensitive recording paper system comprising a. a supporting web or sheet material, b. mark forming components arranged in contiguous juxtaposition and supported by said sheet material, said components comprising a chromogenic material and an electron accepting material of the Lewis acid type reactive with said chromogenic material to produce a mark when brought into reactive contact, and c. a pressure releasable liquid solvent for said chromogenic mark forming component, said solvent comprising a benzyl aryl ether represented by the structure ##SPC1## wherein Ar is an aryl radical selected from the group consisting of phenyl, tolyl, and xylenyl; R 1 , R 3 and R 4 are individually hydrogen or an alkyl group having from 1 to 4 carbon atoms; and R 2 is hydrogen or from 1 to 4 alkyl groups, alike or unlike, the total carbon atom content of R 2 being not greater than 6.
Claim 3
Dependent Claim
19 words
A system of claim 1 wherein the electron accepting material of the Lewis acid type is a phenolic polymer.
Claim 4
Dependent Claim
19 words
A system of claim 2 wherein the total carbon atom content of R 2 is not greater than 4.
Claim 5
Dependent Claim
29 words
A system of claim 1 wherein the chromogenic material is dissolved in the liquid solvent prior to bringing said chromogenic material and said electron accepting material into reactive contact.
Claim 6
Dependent Claim
21 words
A system of claim 1 wherein the mark forming components and the liquid solvent are present on a single support sheet.
Claim 7
Dependent Claim
13 words
A system of claim 1 wherein the chromogenic material comprises a phthalide compound.
Claim 8
Dependent Claim
173 words
A pressure-sensitive recording paper system comprising a. a first support web or sheet material having disposed thereon a coating of a pressure releasable marking fluid, and b. a second supporting web or sheet material having disposed thereon a coating of an electron accepting material of the Lewis acid type arranged in contiguous juxtaposition with the coating on said first supporting material, said marking fluid comprising a liquid solvent and a colorless or substantially colorless chromogenic material dissolved therein, said chromogenic material being reactive with said Lewis acid type material to produce a colored mark and said solvent comprising a benzyl aryl ether represented by the structure ##EQU3## wherein Ar is an aryl radical selected from the group consisting of phenyl, tolyl, and xylenyl, R 1 , R 3 and R 4 are individually hydrogen or an alkyl group having from 1 to 4 carbon atoms; and R 2 is hydrogen or from 1 to 4 alkyl groups, alike or unlike, the total carbon atom content of R 2 being not greater than 6.
Claim 9
Dependent Claim
173 words
A pressure-sensitive recording paper system comprising a. a first support web or sheet material having disposed thereon a coating of a pressure releasable marking fluid, and b. a second supporting web or sheet material having disposed thereon a coating of an electron accepting material of the Lewis acid type arranged in contiguous juxtaposition with the coating on said first supporting material, said marking fluid comprising a liquid solvent and a colorless or substantially colorless chromogenic material dissolved therein, said chromogenic material being reactive with said Lewis acid type material to produce a colored mark and said solvent comprising a benzyl aryl ether represented by the structure ##EQU3## wherein Ar is an aryl radical selected from the group consisting of phenyl, tolyl, and xylenyl, R 1 , R 3 and R 4 are individually hydrogen or an alkyl group having from 1 to 4 carbon atoms; and R 2 is hydrogen or from 1 to 4 alkyl groups, alike or unlike, the total carbon atom content of R 2 being not greater than 6.
Claim 10
Dependent Claim
19 words
A system of claim 7 wherein the electron accepting material of the Lewis acid type is a phenolic polymer.
Claim 11
Dependent Claim
19 words
A system of claim 8 wherein the total carbon atom content of R 2 is not greater than 4.
Claim 12
Dependent Claim
29 words
A system of claim 7 wherein the chromogenic material is dissolved in the liquid solvent prior to bringing said chromogenic material and said electron accepting material into reactive contact.
Claim 13
Dependent Claim
13 words
A system of claim 7 wherein the chromogenic material comprises a phthalide compound.
Claim 14
Independent Claim
117 words
A method of marking on a substrate by developing a color from colorless or substantially colorless chromogenic compounds which comprises contacting said chromogenic compounds and an electron accepting material of the Lewis acid type in the presence of a liquid solvent comprising a benzyl aryl ether represented by the structure ##SPC2## wherein Ar is an aryl radical selected from the group consisting of phenyl, tolyl, and xylenyl, R 1 , R 3 and R 4 are individually hydrogen or an alkyl group having from 1 to 4 carbon atoms; and R 2 is hydrogen or from 1 to 4 alkyl groups, alike or unlike, the total carbon atom content of R 2 being not greater than 6.
Claim 15
Independent Claim
117 words
A method of marking on a substrate by developing a color from colorless or substantially colorless chromogenic compounds which comprises contacting said chromogenic compounds and an electron accepting material of the Lewis acid type in the presence of a liquid solvent comprising a benzyl aryl ether represented by the structure ##SPC2## wherein Ar is an aryl radical selected from the group consisting of phenyl, tolyl, and xylenyl, R 1 , R 3 and R 4 are individually hydrogen or an alkyl group having from 1 to 4 carbon atoms; and R 2 is hydrogen or from 1 to 4 alkyl groups, alike or unlike, the total carbon atom content of R 2 being not greater than 6.
Claim 16
Dependent Claim
19 words
A method of claim 12 wherein the electron accepting material of the Lewis acid type is a phenolic polymer.
Claim 17
Dependent Claim
19 words
A method of claim 13 wherein the total carbon atom content of R 2 is not greater than 4.
Claim 18
Dependent Claim
13 words
A method of claim 12 wherein the chromogenic material comprises a phthalide compound.
References Cited (Backward Citations)
US2394688A
Cited
US3244550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |