US4250247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid degradable radiation-sensitive mixture
Assignee: Hoechst AG
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Filing: 1979-07-05
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Granted: 1981-02-10
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Expires: 1999-07-05
Abstract
Abstract This invention relates to an improvement in a radiation-sensitive mixture containing (a) a compound which forms an acid under the influence of actinic radiation and (b) a compound which has at least one acid-cleavable bond and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that the compound which is capable of being cleft by an acid contains at least one N-acyliminocarbonate group as the acid-cleavable group. The invention also relates to a process for producing relief images using the radiation-sensitive mixture.
Inventors
- 👤 Jurgen Sander
- 👤 Gerhard Buhr
- 👤 Hans Ruckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:47
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/0045; G03F7/016; G03F7/022
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
174 words
In a radiation-sensitive mixture containing (a) a compound which forms an acid under the influence of actinic radiation and (b) a compound which has at least one acid-cleavable bond and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that compound (b) corresponds to the general formula I ##STR6## wherein R 1 is an n-valent aliphatic, cycloaliphatic or aromatic group, R 2 and R 3 are alkyl or aryl groups, and any two of the groups R 1 , R 2 , and R 3 may be linked to form a heterocyclic ring, and n is an integer from 1 to 3, or to the formula II ##STR7## wherein R 4 , R 5 , R 6 , & R 7 are hydrogen atoms or halogen atoms, alkyl, alkoxy, aryl, aryloxy, acyl, acyloxy, carbalkoxy or nitro groups, and any two of the groups R 4 to R 7 may be linked to form a ring, and R 1 and n have the meanings stated above.
Claim 2
Dependent Claim
174 words
In a radiation-sensitive mixture containing (a) a compound which forms an acid under the influence of actinic radiation and (b) a compound which has at least one acid-cleavable bond and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that compound (b) corresponds to the general formula I ##STR6## wherein R 1 is an n-valent aliphatic, cycloaliphatic or aromatic group, R 2 and R 3 are alkyl or aryl groups, and any two of the groups R 1 , R 2 , and R 3 may be linked to form a heterocyclic ring, and n is an integer from 1 to 3, or to the formula II ##STR7## wherein R 4 , R 5 , R 6 , & R 7 are hydrogen atoms or halogen atoms, alkyl, alkoxy, aryl, aryloxy, acyl, acyloxy, carbalkoxy or nitro groups, and any two of the groups R 4 to R 7 may be linked to form a ring, and R 1 and n have the meanings stated above.
Claim 3
Dependent Claim
55 words
A radiation-sensitive mixture according to claim 1 in which the compound (b) which is capable of being cleft by an acid corresponds to the formula III ##STR8## wherein R 1 is an n-valent aromatic group, R 8 and R 9 are hydrogen atoms or alkyl groups, and n is an integer from 1 to 3.
Claim 4
Dependent Claim
13 words
A radiation-sensitive mixture according to claim 1 wherein n is 1 or 2.
Claim 5
Dependent Claim
14 words
A radiation-sensitive mixture according to claim 1, wherein R 1 is an aromatic group.
Claim 6
Dependent Claim
27 words
A radiation-sensitive mixture according to claim 1, wherein one of the groups R 2 and R 3 carries another grouping of the Formula I as a substituent.
Claim 7
Dependent Claim
29 words
A radiation-sensitive mixture according to claim 2, wherein R 1 is a substituted or unsubstituted phenyl group, R 8 and R 9 are methyl groups, and n is 1.
Claim 8
Dependent Claim
14 words
A radiation-sensitive mixture according to claim 1, which additionally contains a polymeric water-insoluble binder.
References Cited (Backward Citations)
US2892712A
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US3932514A
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US3779778A
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US3915704A
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US3917483A
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US3915706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |