US4160671A
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: 1979-07-10
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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 on the amount of this compound, about 1 to 50 per cent by weight of an organic dye capable of salt formation and about 5 to 75 per cent by weight of a photosensitive halogen-containing compound which releases acid upon exposure to light and having one of the general formulae I or II ##STR1## in which R a is an aryl group or a heterocyclic group which may be substituted, R b is a trihaloalkyl group or a trihaloalkenyl group having from 1 to 3 carbon atoms, and n is 1, 2 or 3.
Inventors
- 👤 Paul Stahlhofen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226; G03F7/09; G03F7/105
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based on the amount of this compound, about 1 to 50 percent by weight of an organic dye capable of salt formation and selected from the group consisting of triphenylmethane, azine or anthraquinone dyes, and about 5 to 75 percent by weight of a photosensitive halogen-containing compound which releases acid upon exposure to light and having one of the general formulae I or II ##STR5## in which R a is an aryl group or a heterocyclic group which may be substituted, R b is a trihaloalkyl group or a trihaloalkenyl group having from 1 to 3 carbon atoms and n is 1, 2 or 3.
Claim 2
Dependent Claim
123 words
A photosensitive composition comprising an ester or an amide of an o-naphthoquinone diazide sulfonic or carboxylic acid and, based on the amount of this compound, about 1 to 50 percent by weight of an organic dye capable of salt formation and selected from the group consisting of triphenylmethane, azine or anthraquinone dyes, and about 5 to 75 percent by weight of a photosensitive halogen-containing compound which releases acid upon exposure to light and having one of the general formulae I or II ##STR5## in which R a is an aryl group or a heterocyclic group which may be substituted, R b is a trihaloalkyl group or a trihaloalkenyl group having from 1 to 3 carbon atoms and n is 1, 2 or 3.
Claim 3
Dependent Claim
39 words
A photosensitive composition in accordance with claim 1 which comprises 10 to 40 percent by weight of the halogen-containing compound and 3 to 30 percent by weight of a dye, based on the weight of the naphthoquinone diazide compound.
Claim 4
Dependent Claim
17 words
A photosensitive composition in accordance with claim 1 in which the dye is red, blue or green.
Claim 5
Dependent Claim
39 words
A photosensitive composition in accordance with claim 1 in which in the general formulae I and II R a is an N,N-dialkylamino-phenyl group or a dialkoxy-phenyl group, R b is a trichloromethyl or tribromomethyl group, and n is 1.
Claim 6
Dependent Claim
22 words
A photosensitive composition in accordance with claim 1 which further comprises a resin which is soluble or swellable in aqueous alkaline solutions.
Claim 7
Dependent Claim
15 words
A photosensitive composition in accordance with claim 5 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) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |