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US4189322A
Expired / Lapsed
US
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Photopolymerizable compositions for the production of printing plates and relief plates containing dianthronyl or bisanthrone compound
Assignee: BASF SE
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Filing: 1978-05-03
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Granted: 1980-02-19
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Expires: 1998-05-03
Abstract
Abstract Photopolymerizable compositions for the production of printing plates and relief plates, consisting essentially of a photoinitiator-containing mixture of olefinically unsaturated photopolymerizable compounds with polymeric binders, contain up to 1% by weight of a compound having the structural element of anthrone, e.g. bianthrone and 9,9'-bianthryl, which results in an improved relief image in the production of relief plates.
Inventors
- 👤 Gerhard Hoffmann
- 👤 Dieter Kleuser
- 👤 Bernd Bronstert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:27
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/117; Y10S430/124
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A photopolymerizable composition for the production of printing plates and relief plates, consisting essentially of a photoinitiator-containing mixture of at least one low molecular weight compound having at least one olefinically unsaturated photopolymerizable double bond with at least one organic polymeric binder that is compatible with said compound, wherein the composition contains, uniformly dispersed therein, from about 0.0001 to 1% by weight of 9,9'-dianthronyl or 10,10'-bisanthrone.
Claim 2
Dependent Claim
66 words
A photopolymerizable composition for the production of printing plates and relief plates, consisting essentially of a photoinitiator-containing mixture of at least one low molecular weight compound having at least one olefinically unsaturated photopolymerizable double bond with at least one organic polymeric binder that is compatible with said compound, wherein the composition contains, uniformly dispersed therein, from about 0.0001 to 1% by weight of 9,9'-dianthronyl or 10,10'-bisanthrone.
Claim 3
Dependent Claim
21 words
A photopolymerizable composition as claimed in claim 1, wherein the amount of anthrone compound is from 0.0001 to 0.1% by weight.
Claim 4
Dependent Claim
13 words
A photopolymerizable composition as claimed in claim 1, including a thermal polymerization inhibitor.
Claim 5
Dependent Claim
24 words
A photopolymerizable composition as claimed in claim 1, wherein said organic polymeric binder has recurring --NH--CO-- groups in the main chain of the molecule.
Claim 6
Dependent Claim
13 words
A photopolymerizable composition as claimed in claim 4, including a thermal polymerization inhibitor.
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) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |