US3847609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymer process forming graft polymers in exposed areas
Assignee: Hercules LLC
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Filing: 1972-11-09
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Granted: 1974-11-12
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Expires: 1992-11-09
Abstract
Abstract The invention concerns a process for making photographic images. The process involves the photooxygenation of a film of an extralinearly unsaturated polymer containing allylic hydrogens, followed by treatment of the exposed film with a reactant which will form a graft polymer structure in the exposed areas of the film.
Inventors
- 👤 D Breslow
- 👤 D Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:41
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/38; G03F7/004; G03F7/038; G03F7/265
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
125 words
THE PROCESS OF MAKING A PHOTOGRAPHIC IMAGE WHICH COMPRISES PROVIDING THE SURFACE OF A POLYMER FILM WITH A PHOTO-OXYGENATION SENSITIZER, SAID FILM BEING A FILM OF A POLYMER CONTAINING EXTRALINEAR OLEFINIC UNSATURATION OF THE TYPE IN WHICH THERE IS NO MORE THAN ONE HYDROGEN ATOM ON EACH OF THE DOUBLE BOND CARBONS AND IN WHICH THERE IS AT LEAST ONE ALLYLIC HYDROGEN ON AT LEAST ONE OF THE CARBONS ADJACENT TO THE DOUBLE BOND CARBONS, EXPOSING SELECTED AREAS OF THE SENSITIZED FILM TO LIGHT HAVING A WAVE LENGTH OF FROM ABOUT 2000 TO ABOUT 12,000 ANGSTROMS IN THE PRESENCE OF OXYGEN, AND SUBJECTING THE EXPOSED FILM TO CONTACT WITH A REACTANT CAPABLE OF FORMING A GRAFT POLYMER STRUCTURE IN THE EXPOSED AREAS OF THE ILM.
Claim 2
Dependent Claim
125 words
THE PROCESS OF MAKING A PHOTOGRAPHIC IMAGE WHICH COMPRISES PROVIDING THE SURFACE OF A POLYMER FILM WITH A PHOTO-OXYGENATION SENSITIZER, SAID FILM BEING A FILM OF A POLYMER CONTAINING EXTRALINEAR OLEFINIC UNSATURATION OF THE TYPE IN WHICH THERE IS NO MORE THAN ONE HYDROGEN ATOM ON EACH OF THE DOUBLE BOND CARBONS AND IN WHICH THERE IS AT LEAST ONE ALLYLIC HYDROGEN ON AT LEAST ONE OF THE CARBONS ADJACENT TO THE DOUBLE BOND CARBONS, EXPOSING SELECTED AREAS OF THE SENSITIZED FILM TO LIGHT HAVING A WAVE LENGTH OF FROM ABOUT 2000 TO ABOUT 12,000 ANGSTROMS IN THE PRESENCE OF OXYGEN, AND SUBJECTING THE EXPOSED FILM TO CONTACT WITH A REACTANT CAPABLE OF FORMING A GRAFT POLYMER STRUCTURE IN THE EXPOSED AREAS OF THE ILM.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the light has a wave length of from about 3000 to about 8000 angstroms.
Claim 4
Dependent Claim
20 words
The process of claim 1 wherein the light has a wave length of from about 4000 to about 8000 angstroms.
Claim 5
Dependent Claim
30 words
The process of claim 1 wherein the exposed film after contact with the reactant to produce the graft polymer structure is contacted with a dye, thereby providing a colored image.
Claim 6
Dependent Claim
48 words
The process of claim 1 wherein the exposed film after contact with the reactant to produce the graft polymer structure is further contacted with a different reactant which is capable of reaction with the functional groups of the graft polymer, thereby effecting amplification of the graft polymer structure.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein the exposed film is contacted with a polymeric reactant capable of reacting with an epoxide ring.
Claim 8
Dependent Claim
21 words
The process of claim 6 wherein the surface of the unexposed polymer film also is provided with a transition metal catalyst.
Claim 9
Dependent Claim
25 words
The process of claim 6 wherein the exposed film after contact with the polymeric reactant is contacted with a dye, thereby providing a colored image.
Claim 10
Dependent Claim
17 words
The process of claim 6 wherein the polymer film is oleophilic and the polymeric reactant is hydrophilic.
Claim 11
Dependent Claim
11 words
The process of claim 9 wherein the polymeric reactant is polyethylenimine.
Claim 12
Dependent Claim
22 words
The process of claim 1 wherein the exposed film is contacted with a vinyl monomer in the presence of a reducing agent.
Claim 13
Dependent Claim
17 words
The process of claim 11 wherein the polymer film is oleophilic and the vinyl monomer is hydrophilic.
Claim 14
Dependent Claim
11 words
The process of claim 12 wherein the vinyl monomer is acrylamide.
Claim 15
Dependent Claim
11 words
The process of claim 12 wherein the vinyl monomer is dimethylacrylamide.
Claim 16
Dependent Claim
12 words
The process of claim 12 wherein the vinyl monomer is hydroxymethyl acrylamide.
Claim 17
Dependent Claim
13 words
The process of claim 12 wherein the vinyl monomer is polyethylene glycol diacrylate.
Claim 18
Dependent Claim
49 words
The proCess of claim 11 wherein the exposed film after contact with the vinyl monomer to produce the graft polymer structure is further contacted with a different reactant which is capable of reaction with the functional groups of the graft polymer, thereby effecting amplification of the graft polymer structure.
Claim 19
Dependent Claim
22 words
The process of claim 17 wherein the polymer film is oleophilic, the vinyl monomer is oleophilic and the amplification reactant is hydrophilic.
Claim 20
Dependent Claim
18 words
The process of claim 18 wherein the vinyl monomer is glycidyl acrylate and the amplification reactant is polyethylenimine.
Claim 21
Dependent Claim
18 words
The process of claim 18 wherein the vinyl monomer is vinylbenzyl chloride and the amplification reactant is polyethylenimine.
Claim 22
Dependent Claim
22 words
The process of claim 17 wherein the polymer film is oleophilic, the vinyl monomer is hydrophilic and the amplification reactant is hydrophilic.
Claim 23
Dependent Claim
18 words
The process of claim 21 wherein the vinyl monomer is acrylic acid and the amplification reactant is polyethylenimine.
Claim 24
Dependent Claim
19 words
The process of claim 21 wherein the vinyl monomer is acrylic acid and the amplification reactant is poly(methacryloxyethyltrimethylammonium methylsulfate).
Claim 25
Dependent Claim
24 words
The process of claim 21 wherein the vinyl monomer is methacryloxyethyltrimethylammonium methylsulfate and the amplification reactant is a copolymer of sodium sulfopropylacrylate and acrylamide.
Claim 26
Dependent Claim
11 words
A photopolymer element prepared according to the process of claim 1.
Claim 27
Dependent Claim
13 words
The photopolymer element of claim 25 wherein the element is a lithographic plate.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |