US3765898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable copying composition and copying material produced therewith
Assignee: Kalle GmbH and Co KG
•
Filing: 1971-08-09
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Granted: 1973-10-16
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Expires: 1991-08-09
Abstract
Abstract This invention relates to a photopolymerizable copying composition comprising at least one binder, at least one polymerizable compound and, as a photoinitiator at least one compound of the general formula I in which: Z and Q are different from one another and each represents either a nitrogen atom or the group C-R'', X and T are the same or different and represent a nitrogen atom or the group C-R'''', R and R'' are the same or different and represent aliphatic, aromatic or heterocyclic groups and R'''' represents hydrogen or an organic group, the nucleus A carrying a further group of the significance of R'''' or an annellated benzene ring.
Inventors
- 👤 S Bauer
- 👤 R Brahm
- 👤 R Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:30
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/114; Y10S430/12; Y10S430/121
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
20 words
A copying composition as claimed in claim 1, in which the photoinitiator is a compound of the general formula II
Claim 2
Dependent Claim
23 words
A copying composition as claimed in claim 2, in which the photoinitiator is a compound in which R6 and R7 are alkoxy groups.
Claim 3
Dependent Claim
16 words
A copying composition as claimed in claim 3, in which the alkoxy groups are methoxy groups.
Claim 4
Dependent Claim
14 words
A copying coMposition as claimed in claim 4, in which the photoinitiator is 4'',4''''-dimethoxy-2,3-diphenyl-quinoxaline.
Claim 5
Dependent Claim
14 words
A copying composition as claimed in claim 4, in which the photoinitiator is 6-methyl-4'',4''''-dimethoxy-2,3-diphenyl-quinoxaline.
Claim 6
Dependent Claim
14 words
A copying composition as claimed in claim 4, in which the photoinitiator is 6,7-dimethyl-4'',4''''-dimethoxy-2,3-diphenyl-quinoxaline.
Claim 7
Dependent Claim
14 words
A copying composition as claimed in claim 4, in which the photoinitiator is 6-chloro-4'',4''''-dimethoxy-2,3-diphenyl-quinoxaline.
Claim 8
Dependent Claim
14 words
A copying composition as claimed in claim 4, in which the photoinitiator is 6,4'',4''''-trimethoxy-2,3-diphenyl-quinoxaline.
Claim 9
Dependent Claim
14 words
A copying composition as claimed in claim 4, in which the photoinitiator is 4'',4''''-dimethoxy-2,3-diphenyl-5-aza-quinoxaline.
Claim 10
Dependent Claim
19 words
A copying composition as claimed in claim 1, in which the binder is soluble or softenable in aqueous alkali.
Claim 11
Dependent Claim
15 words
A copying composition as claimed in claim 1, additionally containing at least one hydrogen donor.
Claim 12
Dependent Claim
18 words
A copying composition as claimed in claim 1 in the form of a light-sensitive layer on a support.
References Cited (Backward Citations)
US3479185A
Cited
US3650745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |