Patent US3884703A successfully refreshed from Google Patents.
US3884703A
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US
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Bisazide sensitized photoresistor composition with diacetone acrylamide
Assignee: Hitachi Ltd
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Filing: 1973-04-11
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Granted: 1975-05-20
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Expires: 1993-04-11
Abstract
Abstract When the diacetone acrylamide is added to the photoresist composition which comprises a water soluble organic resin and a bisazide, the photoresist composition thus obtained has an excellent adhesion force for a substrate.
Inventors
- 👤 Yoichi Oba
- 👤 Teruo Tsunoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:01
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/085; G03F7/008; G03F7/0085; G03F7/027
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A PHOTORESIST COMPOSITION COMPRISING A WATER SOLUBLE ORGANIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYACRYLAMIDE, POLYVINYLPYRROLIDONE, GELATIN, METHYLCELLULOSE, A WATER SOLUBLE SALT OF POLY-L-GLUTAMATE, A WATER SOLUBLE POLYACRYLAE, A COPOLYMER OF VINYL ALCOHOL AND MALEIC ACID, AND A CPOLYMER OF VINYL ALCOHOL AND ACRYLAMIDE, AND A BISAZIDE SELECTED FROM THE GROUP CONSISTINGOF SODIUM,-4,4''-DIAZIDESTILBENE-2,2''DISULFONATE, SODIUM-4,4''-DIAZIDESTIBENE-Y-CARBOXYLATE AND SODIUM-4,4''-DIAZIDEBENZALACETOPHENONE-2-SULFONATE, AS A PHOTOCHEMICAL REACTION INITIATOR, CHARACTERIZED INTHAT DIACETONE ACRYLAMIDE IS ADDED THEREIN IN AN AMOUNT OF AT LEAST 5 PARTS BY WEIGHT BASED ON 100 PARTS OF SAID WATER SOLUBLE RESIN, WHEREBY SAID PHOTORESIST COMPOSITION IS REMARKABLY IMPROVED IN ADHESION FOR A SUBSTRATE.
Claim 2
Dependent Claim
100 words
A PHOTORESIST COMPOSITION COMPRISING A WATER SOLUBLE ORGANIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYACRYLAMIDE, POLYVINYLPYRROLIDONE, GELATIN, METHYLCELLULOSE, A WATER SOLUBLE SALT OF POLY-L-GLUTAMATE, A WATER SOLUBLE POLYACRYLAE, A COPOLYMER OF VINYL ALCOHOL AND MALEIC ACID, AND A CPOLYMER OF VINYL ALCOHOL AND ACRYLAMIDE, AND A BISAZIDE SELECTED FROM THE GROUP CONSISTINGOF SODIUM,-4,4''-DIAZIDESTILBENE-2,2''DISULFONATE, SODIUM-4,4''-DIAZIDESTIBENE-Y-CARBOXYLATE AND SODIUM-4,4''-DIAZIDEBENZALACETOPHENONE-2-SULFONATE, AS A PHOTOCHEMICAL REACTION INITIATOR, CHARACTERIZED INTHAT DIACETONE ACRYLAMIDE IS ADDED THEREIN IN AN AMOUNT OF AT LEAST 5 PARTS BY WEIGHT BASED ON 100 PARTS OF SAID WATER SOLUBLE RESIN, WHEREBY SAID PHOTORESIST COMPOSITION IS REMARKABLY IMPROVED IN ADHESION FOR A SUBSTRATE.
Claim 3
Dependent Claim
22 words
The photoresist composition according to claim 1, in which the amount of diacetone acrylamide is the range of 50 to 200 parts.
Claim 4
Dependent Claim
40 words
A photoresist composition consisting essentially of an aqueous solution containing polyacrylamide and sodium-4,4''-diazidestilbene-2,2''-disulfonate, characterized in that in said aqueous solution is dissolved diacetone acrylamide of an amount of 10 to 100 parts by weight based on 100 parts of polyacrylamide.
Claim 5
Dependent Claim
40 words
A photoresist composition consisting essentially of an aqueous solution containing polyacrylamide and sodium-4,4''-diazidestilbene-2,2''-disulfonate, characterized in that in said aqueous solution is dissolved diacetone acrylamide of an amount of 10 to 100 parts by weight based on 100 parts of polyacrylamide.
Claim 6
Dependent Claim
40 words
A photoresist composition consisting essentially of an aqueous solution containing polyvinylpyrrolidene and sodium-4,4''-diazidestilbene-2,2''-disulfonate, characterized in that in said aqueous solution is dissolved diacetone acrylamide in an amount of 5 to 200 parts by weight based on 100 parts of polyvinylpyrolidone.
Claim 7
Dependent Claim
40 words
A photoresist composition consisting essentially of an aqueous solution containing polyvinylpyrrolidene and sodium-4,4''-diazidestilbene-2,2''-disulfonate, characterized in that in said aqueous solution is dissolved diacetone acrylamide in an amount of 5 to 200 parts by weight based on 100 parts of polyvinylpyrolidone.
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |