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US3622335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of an alpha acrylonitrile and a styrene used as vehicles in vesicular materials
Assignee: Individual
•
Filing: 1970-01-13
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Granted: 1971-11-23
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Expires: 1990-01-13
Abstract
Abstract This invention is directed to a light-sensitive vesicular imaging composition comprising a sensitizer which liberates gas on irradiation and a binder which is essentially a copolymer of an alpha alkyl acrylonitrile with a styrene-type comonomer, including styrene per se and alpha and aryl substituted styrenes. The composition is coated as a thin film, carefully dried and may be conditioned with a hot water treatment or otherwise prenucleated to secure an imaging medium of superior qualities. After irradiation of this novel composition with a pattern of actinic radiation, gas released in the selected areas may be developed by overall heating to a visible record.
Inventors
- 👤 Norman Thomas Notley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:15
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
A material according to claim 1 wherein said light-decomposable solid agent is a diazo compound capable of generating nitrogen upon exposure to radiation.
Claim 2
Dependent Claim
13 words
A material according to claim 1 wherein said alpha alkyl acrylonitrile is methacrylonitrile.
Claim 3
Dependent Claim
26 words
A material according to claim 1 wherein the molar proportion of alpha alkyl acrylonitrile in the copolymer exceeds 40 percent but does not exceed 95 percent.
Claim 4
Dependent Claim
11 words
The material of claim 3 wherein said styrene-type comonomer is chlorostyrene.
Claim 5
Dependent Claim
11 words
The material of claim 3 wherein said styrene-type comononer is alpha-methylstyrene.
Claim 6
Dependent Claim
12 words
The material of claim 3 wherein said styrene-type comonomer is vinyl toluene.
Claim 7
Dependent Claim
13 words
The material of claim 3 wherein said styrene-type comonomer is styrene per se.
Claim 8
Dependent Claim
25 words
A material according to claim 3 which is prepared for imaging by a treatment with hot water and a short overall exposure to acTinic light.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |