Patent US3615451A successfully refreshed from Google Patents.
US3615451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing plate having a photoactive layer
Assignee: Kalle GmbH and Co KG
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Filing: 1968-08-28
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Granted: 1971-10-26
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Expires: 1988-08-28
Abstract
Abstract WHEREIN R1 and R2 which may be identical or not, are aryl or heteroyl groups which may be substituted, or form members of an aromatic or pyridine ring, R3 is -ch CH2 or -rch CH2, with R being arylene, naphthalene, or heteroylene, R4 is either identical with R3, or is an aryl or heteroyl group which may be substituted, and Y is NH, S, Se, or O. This invention relates to a light-sensitive material, particularly a printing plate having a photopolymerizable layer, which layer contains a photochemically initiatable organic halogen compound and a compound corresponding to one of the following general formulas:
Inventors
- 👤 Ernst-August Hackmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:38
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/64; C07D263/00; C07D263/02; C07D263/30; C07D263/32; C07D263/52; C07D263/54; C07D263/56; C07D263/57; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/28; C07D471/00; C07D471/02; C07D471/04; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; G03F7/0295; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/126
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
14 words
Light-sensitive material according to claim 1 in which the layer also contains a binder.
Claim 2
Dependent Claim
15 words
Light-sensitive material according to claim 1 in which the layer also contains a cross-linking agent.
Claim 3
Dependent Claim
20 words
Light-sensitive material according to claim 1 in which the layer is on a support suitable for use in planographic printing.
Claim 4
Dependent Claim
15 words
Light-sensitive material according to claim 1 in which the halogenated organic compound has the formula
Claim 5
Dependent Claim
27 words
Light-sensitive material according to claim 1 in which the halogenated organic compound is selected from the group consisting of tetrabromomethane, tribromomethylphenylsulfone, iodoform, pentabromoethane. 3-nitro-tribromoacetophenone, and 2, 5-dimethyltribromoacetophenone.
Claim 6
Dependent Claim
21 words
Light-sensitive material according to claim 1 in which the C-vinyl compound is selected from the group consisting of 2-vinyl-4-(4''-diethylaminophenyl)-5-(2''''-chlorophenyl)-oxazole, and 2,3-di-(4-vinylphenyl)-quinoxaline.
Claim 7
Dependent Claim
53 words
A process for making a printing plate which comprises exposing a supported light-sensitive photopolymerizable layer to light under a master and developing the resulting image by dissolving away the unexposed areas, the layer containing a photolytically effective halogenated organic compound and at least one C-vinyl compound corresponding to one of the general formulae:
Claim 8
Dependent Claim
14 words
A process according to claim 8 in which the layer also contains a binder.
Claim 9
Dependent Claim
15 words
A process according to claim 8 in which the layer also contains a cross-linking agent.
Claim 10
Dependent Claim
15 words
A process according to claim 8 in which the halogenated organic compound has the formula
Claim 11
Dependent Claim
26 words
A process according to claim 8 in which the halogenated organic compound is selected froM the group consisting of tetrabromomethane, tribromomethylphenylsulfone, iodoform, pentabromoethane, 3-nitrotribromoacetophenone, and 2,5-dimethyltribromoacetophenone.
Claim 12
Dependent Claim
21 words
A process according to claim 8 in which the C-vinyl compound is selected from the group consisting of 2-vinyl4-(4''-diethylaminophenyl)-5-(2''''-chlorophenyl)-oxazole, and 2,3-di-(4-vinylphenyl)-quinoxaline.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |