US4121013A
Expired / Lapsed
US
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Record material
Assignee: WTA Inc
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Filing: 1977-04-21
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Granted: 1978-10-17
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Expires: 1997-04-21
Abstract
Abstract A sensitized record sheet material is disclosed, suitable for developing color in oily, colorless, chromogenic dye-precursor inks applied thereto. Said record sheet material has a light, reactive, coating which comprises a zinc compound and a salicylic acid derivative combinded in, and applied from, an aqueous system of basic pH. The coating composition is also disclosed, as is the process for making it.
Inventors
- 👤 Robert E. Miller
- 👤 Bruce W. Brockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:52
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
A sensitized record sheet material comprising a substrate and a coating comprising an active material consisting essentially of the dried residue of an aqueous dispersion of a 3,5-substituted salicylic acid, a zinc compound selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulfonate, and ammonium hydroxide at a pH of 7.5 to 10.0, wherein the 3,5'substituted salicylic acid is present in an amount of 0.1 to 0.4 grams per square meter and the 3,5-substituted salicylic acid and the zinc compound are present in a weight ratio of 1:1 to 1:6.
Claim 2
Dependent Claim
96 words
A sensitized record sheet material comprising a substrate and a coating comprising an active material consisting essentially of the dried residue of an aqueous dispersion of a 3,5-substituted salicylic acid, a zinc compound selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulfonate, and ammonium hydroxide at a pH of 7.5 to 10.0, wherein the 3,5'substituted salicylic acid is present in an amount of 0.1 to 0.4 grams per square meter and the 3,5-substituted salicylic acid and the zinc compound are present in a weight ratio of 1:1 to 1:6.
Claim 3
Dependent Claim
29 words
The record sheet material of claim 1 wherein the 3,5-substituted salicylic acid is selected from the group consisting of 3,5-diisopropyl salicylic acid, 3,5-di-tert-butyl salicylic acid, and 3-tert-butyl-5-methyl salicylic acid.
Claim 4
Dependent Claim
20 words
The record sheet material of claim 1 wherein the active material is 2.5 to 20 weight percent of the coating.
Claim 5
Dependent Claim
23 words
The record sheet material of claim 1 wherein the 3,5-substituted salicylic acid is 3,5-di-tert-butyl salicylic acid and the zinc compound is zinc oxide.
Claim 6
Dependent Claim
84 words
A process for making a paper coating composition comprising the steps of: (a) dispersing into an aqueous liquid vehicle active material consisting essentially of a 3,5-substituted salicylic acid and a zinc compound, selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate, zinc phenol sulfonate, wherein the 3,5-substituted salicyclic acid and the zinc compound are present in a weight ratio of about 1:1 to 1:6; and (b) adjusting the pH of the dispersion to 7.5 to 10.0 by addition of ammonium hydroxide.
Claim 7
Dependent Claim
84 words
A process for making a paper coating composition comprising the steps of: (a) dispersing into an aqueous liquid vehicle active material consisting essentially of a 3,5-substituted salicylic acid and a zinc compound, selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate, zinc phenol sulfonate, wherein the 3,5-substituted salicyclic acid and the zinc compound are present in a weight ratio of about 1:1 to 1:6; and (b) adjusting the pH of the dispersion to 7.5 to 10.0 by addition of ammonium hydroxide.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein the 3,5-substituted salicylic acid is selected from the group consisting of 3,5-diisopropyl salicylic acid, 3,5-di-tert-butyl salicylic acid, and 3-tert-butyl-5-methyl salicylic acid.
Claim 9
Dependent Claim
21 words
The process of claim 6 wherein the zinc compound is zinc oxide and the 3,5-substituted salicylic acid is 3,5-di-tert-butyl salicylic acid.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the 3,5-substituted salicylic acid and the zinc compound are present in a weight ratio of from 1:1 to 1:6.
Claim 11
Dependent Claim
76 words
A paper coating composition comprising an aqueous liquid vehicle and active material consisting essentially of a 3,5-substituted salicylic acid; a zinc compound selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulfonate; and ammonium hydroxide in an amount to maintain the pH of the composition at 7.5 to 10.0, wherein the 3,5' substituted salicylic acid and the zinc compound are present in a weight ratio of about 1:1 to 1:6.
Claim 12
Dependent Claim
76 words
A paper coating composition comprising an aqueous liquid vehicle and active material consisting essentially of a 3,5-substituted salicylic acid; a zinc compound selected from the group consisting of zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulfonate; and ammonium hydroxide in an amount to maintain the pH of the composition at 7.5 to 10.0, wherein the 3,5' substituted salicylic acid and the zinc compound are present in a weight ratio of about 1:1 to 1:6.
Claim 13
Dependent Claim
19 words
The composition of claim 9 wherein the active material represents about 2.5 to 20, weight percent, of the composition.
Claim 14
Dependent Claim
21 words
The composition of claim 9 wherein the zinc compound is zinc oxide and the 3,5-substituted salicylic acid is 3,5-di-tert-butyl salicylic acid.
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) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |