US3751259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable copying composition
Assignee: Kalle GmbH and Co KG
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Filing: 1971-06-02
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Granted: 1973-08-07
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Expires: 1991-06-02
Abstract
Abstract IN WHICH R1, R2, and R3 are selected from the group consisting of hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy, amino, acylamino, and aralkenyl groups, R4, R5, R6 and R7 are H or annelated benzene rings, with no more than two annelated benzene rings being present per molecule, however, and X This invention relates to a photopolymerizable copying composition comprising at least one binder, at least one polymerizable compound and at least one photoinitiator having one of the formulae:
Inventors
- 👤 S Bauer
- 👤 K Klupfel
- 👤 R Faust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; C08K5/3465; C08K5/3412; C08K5/3432; C08K5/3437; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107; Y10S430/11; Y10S430/111; Y10S430/114; Y10S430/12; Y10S430/121
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
A copying composition according to claim 1 in which the photoinitiator is selected from the group consisting of 9-phenyl-acridine, 9-p-tolyl-acridine, 9-p-methoxyphenyl-acridine, 9-p-hydroxyphenyl-acridine, 9-acetylamino-acridine, benz(a)-acridine, 10-methyl-benz(a)-acridine, benz(a)-phenazine, 9,10-dimethyl-benz(a)-phenazine, dibenz(a,c)-phenazine, 11-methoxy-dibenz(a,c)-phenazine, dibenz(a,j)-phenazine, and dibenz(f,h)-pyrido-(2,3-b)-quinoxaline.
Claim 2
Dependent Claim
15 words
A copying composition according to claim 1 in which the binder is alkali-soluble or alkali-softenable.
Claim 3
Dependent Claim
15 words
A copying composition according to claim 1 containing, in addition, at least one hydrogen donor.
Claim 4
Dependent Claim
17 words
A copying composition according to claim 1 in the form of a light-sensitive layer on a support.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |