US4248957A
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: 1981-02-03
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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 C--O--C group 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 enol ether 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
- 👤 Detlef Skaletz
- 👤 Gerhard Buhr
- 👤 Gerhard Lohaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:37
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/0045; G03F7/016; G03F7/022
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
189 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 C--O--C group and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that compound (b) corresponds either to the general formula I ##STR15## wherein R 1 is an n-valent aliphatic group which has at least 2 carbon atoms, R 2 , R 3 , & R 4 are identical or different and are hydrogen atoms, alkyl or aryl groups or any two thereof are linked to form a saturated or olefinically unsaturated ring, and n is an integer from 1 to 4, or to the general formula II ##STR16## wherein R 2 and R 2 ' are groups which differ from each other, one of the groups representing the --O-group and the other a hydrogen atom, an alkyl or aryl group, R 5 to R 10 are identical or different and are hydrogen atoms or halogen atoms, alkyl, aryl or alkoxy groups, and R 1 and n have the meanings stated above.
Claim 2
Dependent Claim
189 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 C--O--C group and the solubility of which in a liquid developer is increased by the action of an acid, the improvement that compound (b) corresponds either to the general formula I ##STR15## wherein R 1 is an n-valent aliphatic group which has at least 2 carbon atoms, R 2 , R 3 , & R 4 are identical or different and are hydrogen atoms, alkyl or aryl groups or any two thereof are linked to form a saturated or olefinically unsaturated ring, and n is an integer from 1 to 4, or to the general formula II ##STR16## wherein R 2 and R 2 ' are groups which differ from each other, one of the groups representing the --O-group and the other a hydrogen atom, an alkyl or aryl group, R 5 to R 10 are identical or different and are hydrogen atoms or halogen atoms, alkyl, aryl or alkoxy groups, and R 1 and n have the meanings stated above.
Claim 3
Dependent Claim
14 words
A radiation-sensitive mixture according to claim 1 in which n is 1 or 2.
Claim 4
Dependent Claim
14 words
A radiation-sensitive mixture according to claim 1 in which R 2 ' is --O--.
Claim 5
Dependent Claim
35 words
A radiation-sensitive mixture according to claim 1 in which another grouping of the Formula I is present as a substituent in one of the groups R 2 , R 3 , and R 4 .
Claim 6
Dependent Claim
30 words
A radiation-sensitive mixture according to claim 1 in which the compound which is capable of being cleft by an acid has a molecular weight in the range between 250and 800.
Claim 7
Dependent Claim
14 words
A radiation-sensitive mixture according to claim 1 which additionally contains a polymeric water-insoluble binder.
Claim 8
Dependent Claim
16 words
A radiation-sensitive mixture according to claim 6 in which the water-insoluble binder is a phenol resin.
Claim 9
Dependent Claim
25 words
A radiation-sensitive mixture according to claim 1 in which the compound (a) which forms an acid under the influence of actinic radiation is a 2-aryl-4,6-bis-trichloromethyl-s-triazine.
References Cited (Backward Citations)
US2891712A
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US3932514A
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US3779778A
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US3915704A
Cited
US3917483A
Cited
US3915706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |