US3658567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making pressure-sensitive transfer elements
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
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Filing: 1969-12-15
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Granted: 1972-04-25
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Expires: 1989-12-15
Abstract
Abstract Preparation of pressure-sensitive transfer sheets based upon synthetic resinous film-forming binder materials in the absence of volatile solvents which comprises mixing a liquid polymerizable acrylic ester monomer, ink paste comprising oily material and colorant, and a polymerization catalyst, applying the composition as a thin layer and heating in an inert atmosphere to induce polymerization of said monomer to form a solid pressure-sensitive transfer layer.
Inventors
- 👤 Douglas A Newman
- 👤 Alfred M Vogel
- 👤 Albert E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:39
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
14 words
Process according to claim 1 in which said liquid polymer comprises tripropyl trimethoxy acrylate.
Claim 2
Dependent Claim
46 words
Process according to claim 1 in which said oleaginous material comprises a liquid oil which is substantially incompatible with the formed solid resinous binder material and is exudable from said solidified coating together with said coloring matter as an ink under the effects of imaging pressure.
Claim 3
Dependent Claim
36 words
Process according to claim 1 in which said oleaginous material is substantially compatible with the formed solid resinous binder material, a filler is present, and the solidified coating is transferable under the effects of imaging pressure.
Claim 4
Dependent Claim
14 words
Process according to claim 1 in which the acrylic ester monomer is hydroxyethyl methacrylate.
Claim 5
Dependent Claim
29 words
Process according to claim 1 in which the polymerization catalyst is present as a uniform mixture with a vinyl monomer which polymerizes more slowly than said acrylic ester monomer.
Claim 6
Dependent Claim
12 words
Process according to claim 1 in which the inert atmosphere is nitrogen.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |