US4163672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive composition
Assignee: Hoechst AG
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Filing: 1977-09-09
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Granted: 1979-08-07
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Expires: 1997-09-09
Abstract
Abstract This invention relates to a photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based upon the amount of this compound, about 1 to 50 percent by weight of an organic dye capable of salt formation, and about 5 to 75 percent by weight of a photosensitive halogen-containing diazonium salt which releases acid upon exposure to light and having the general formula I ##STR1## IN WHICH R a is selected from the group consisting of hydrogen, halogen, an alkyl, alkoxy, aryl, arylmercapto, aryloxy, arylamino or benzoylamino group, R b and/or R c are selected from the group consisting of hydrogen, an alkyl, alkoxy, aryloxy, alkylmercapto or arylmercapto group, A is selected from the group consisting of PF 6 , BF 4 , AsF 6 , SbCl 6 , SnCl 6 , BiCl 5 , ZnCl 4 or SbF 6 , and x is 1 or 2, with R a and R c simultaneously not being hydrogen.
Inventors
- 👤 Paul Stahlhofen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:15
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226; G03F7/09; G03F7/105
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
A photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based upon the amount of this compound, about 1 to 50 percent by weight of an organic dye capable of salt formation and being selected from the group consisting of a triphenylmethane, azine, or anthraquinone dye, and about 5 to 75 percent by weight of a photosensitive halogen-containing diazonium salt which releases acid upon exposure to light and having the general formula I ##STR3## in which R a is selected from the group consisting of hydrogen and halogen atoms, alkyl, alkoxy, aryl, arylmercapto, aryloxy, arylamino and benzoylamino groups, R b and R c are selected from the group consisting of hydrogen atoms, alkyl, alkoxy, aryloxy, alkylmercapto and arylmercapto groups, A is selected from the group consisting of PF 6 , BF 4 , AsF 6 , SbCl 6 , SnCl 6 , BiCl 5 , ZnCl 4 and SbF 6 , and x is 1 or 2, with R a and R c simultaneously not being hydrogen.
Claim 2
Dependent Claim
175 words
A photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based upon the amount of this compound, about 1 to 50 percent by weight of an organic dye capable of salt formation and being selected from the group consisting of a triphenylmethane, azine, or anthraquinone dye, and about 5 to 75 percent by weight of a photosensitive halogen-containing diazonium salt which releases acid upon exposure to light and having the general formula I ##STR3## in which R a is selected from the group consisting of hydrogen and halogen atoms, alkyl, alkoxy, aryl, arylmercapto, aryloxy, arylamino and benzoylamino groups, R b and R c are selected from the group consisting of hydrogen atoms, alkyl, alkoxy, aryloxy, alkylmercapto and arylmercapto groups, A is selected from the group consisting of PF 6 , BF 4 , AsF 6 , SbCl 6 , SnCl 6 , BiCl 5 , ZnCl 4 and SbF 6 , and x is 1 or 2, with R a and R c simultaneously not being hydrogen.
Claim 3
Dependent Claim
35 words
A composition in accordance with claim 1 including 10 to 40 percent by weight of diazonium salt and 3 to 30 percent by weight of dye, based on the weight of the naphthoquinone diazide compound.
Claim 4
Dependent Claim
16 words
A composition in accordance with claim 1 in which the dye is red, blue or green.
Claim 5
Dependent Claim
54 words
A composition in accordance with claim 1 in which in the general formula I R a is selected from the group consisting of arylmercapto, benzoylamino and alkoxyphenyl groups R b and R c are alkoxy groups and A is selected from the group consisting of PF 6 , BF 4 and AsF 6 .
Claim 6
Dependent Claim
17 words
A composition in accordance with claim 1 in which R b and R c are ethoxy groups.
Claim 7
Dependent Claim
20 words
A composition in accordance with claim 1 further containing a resin which is soluble or swellable in aqueous alkaline solutions.
Claim 8
Dependent Claim
14 words
A composition in accordance with claim 6 in which the resin is a novolak.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |