US4460674A
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US
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Posi-type quinone diazide photosensitive composition with sensitizer therefor
Assignee: Konica Minolta Inc
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Filing: 1982-01-04
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Granted: 1984-07-17
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Expires: 2002-01-04
Abstract
Abstract A posi-type photosensitive composition having enhanced sensitivity is prepared by incorporating a specific sensitizer selected from gallic acid, its derivative, naphthoquinone compound and its derivative in a quinonediazide type photosensitive material. The composition is free from lowering in development tolerance and other properties.
Inventors
- 👤 Masafumi Uehara
- 👤 Takeshi Yamamoto
- 👤 Atsuo Yamazaki
- 👤 Tohru Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
128 words
A posi-type photosensitive composition, comprising 10 to 50% by weight of a quinonediazide posi-type photosensitive compound and 0.5 to 20% by weight of at least one sensitizer represented by formula (I) or (II): ##STR3## wherein R is selected from the group consisting of a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a substituted aryl group, a cycloalkyl group, and an alkali metal atom; ##STR4## wherein each of R 1 , R 2 and R 3 is selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a substituted aryl group, an acyl group, a halogen atom, a nitro group and a hydroxyl group and wherein said R 3 groups may be either identical or different groups.
Claim 2
Dependent Claim
128 words
A posi-type photosensitive composition, comprising 10 to 50% by weight of a quinonediazide posi-type photosensitive compound and 0.5 to 20% by weight of at least one sensitizer represented by formula (I) or (II): ##STR3## wherein R is selected from the group consisting of a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a substituted aryl group, a cycloalkyl group, and an alkali metal atom; ##STR4## wherein each of R 1 , R 2 and R 3 is selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a substituted aryl group, an acyl group, a halogen atom, a nitro group and a hydroxyl group and wherein said R 3 groups may be either identical or different groups.
Claim 3
Dependent Claim
66 words
The posi-type photosensitive composition of claim 1, wherein said substituted aryl group has at least one substituent selected from the group consisting of a lower alkyl group having one to four carbon atoms, a lower alkoxy group having one to four carbon atoms, a lower acyl group having one to four carbon atoms, a halogen atom, a nitro group, a hydroxyl group and a carboxyl group.
Claim 4
Dependent Claim
18 words
The posi-type photosensitive composition of claim 1 further comprising 45 to 80% by weight of a binder resin.
Claim 5
Dependent Claim
38 words
The posi-type photosensitive composition of claim 1, wherein said quinonediazide compound is present in an amount of between 20 to 40% by weight and said sensitizer is present in an amount of between 1 to 7% by weight.
Claim 6
Dependent Claim
18 words
The posi-type photosensitive composition of claim 4 further comprising 50 to 70% by weight of a binder resin.
Claim 7
Dependent Claim
40 words
The posi-type photosensitive composition of claim 1, wherein the photosensitive compound is selected from the group consisting of an ester of 1,2-diazonaphthoquinonesulfonyl chloride with a phenolic hydroxyl group containing compound and an amide of 1,2-diazonaphthoquinonesulfonyl chloride with an aromatic amine.
Claim 8
Dependent Claim
49 words
The posi-type photosensitive composition of claim 1, wherein the quinonediazide type posi-type photosensitive compound is selected from the group consisting of an ester of 1,2-diazonaphthoquinonesulfonyl chloride with polyhydroxyphenyl, an ester of 1,2-diazonaphthoquinonesulfonyl chloride with resorcinbenzaldehyde resin, and an ester of 1,2-diazobenzoquinonesulfonyl chloride or 1,2-diazonaphthoquinonesulfonyl chloride with a phenol-formaldehyde resin.
Claim 9
Dependent Claim
30 words
The posi-type photosensitive composition of claim 7, wherein the quinonediazide type posi-type photosensitive compound is an ester of 1,2-diazonaphthoquinonesulfonyl chloride with polyhydroxyphenyl or an ester of 1,2-diazonaphthoquinonesulfonylchloride with resorcin-benzaldehyde resin.
Claim 10
Dependent Claim
18 words
The posi-type photosensitive composition of claim 1, wherein the sensitizer is at least one compound of formula (I).
Claim 11
Dependent Claim
44 words
The posi-type photosensitive composition of claim 9, wherein the sensitizer is selected from the group consisting of gallic acid, methyl gallate, ethyl gallate, i-propyl gallate, t-butyl gallate, lauryl gallate, stearyl gallate, benzyl gallate, phenyl gallate, cyclohexyl gallate, tannic acid, digallic acid and potassium gallate.
Claim 12
Dependent Claim
18 words
The posi-type photosensitive composition of claim 10, wherein the sensitizer is gallic acid, methyl gallate or ethyl gallate.
Claim 13
Dependent Claim
18 words
The posi-type photosensitive composition of claim 1, wherein the sensitizer is at least one compound of formula (II).
Claim 14
Dependent Claim
33 words
The posi-type photosensitive composition of claim 12, wherein the sensitizer is selected from the group consisting of 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 2-ethyl-1,4-naphthoquinone, 2-propyl-1,4-naphthoquinone, 2,3-dimethyl-1,4-naphthoquinone, 2,5-dimethyl-1,4-naphthoquinone, 2-methoxy-1,4-naphthoquinone, 2-phenyl-1,4-naphthoquinone, 2-(p-tolyl)-1,4-naphthoquinone, 2-acetyl-1,4-naphthoquinone, 3-chloro-1,4-naphthoquinone, 6-chloro-1,4-naphthoquinone, 6-bromo-1,4-naphthoquinone, 6-nitro-1,4-naphthoquinone and 2-hydroxy-1,4-naphthoquinone.
Claim 15
Dependent Claim
15 words
The posi-type photosensitive composition of claim 13, wherein the sensitizer is 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone or 6-chloro-1,4-naphthoquinone.
Claim 16
Dependent Claim
12 words
The posi-type photosensitive composition according to claim 1, further comprising an additive.
Claim 17
Dependent Claim
18 words
The posi-type photosensitive composition of claim 15, wherein the additive is a basic dye or an oil-soluble dye.
Claim 18
Dependent Claim
32 words
The posi-type photosensitive composition of claim 3, wherein the binder resin is selected from the group consisting of a phenol-formaldehyde resin, a cresolformaldehyde resin, a p-tert-butylphenol-formaldehyde resin, and a phenol-modified xylene resin.
Claim 19
Dependent Claim
15 words
A posi-type photosensitive material, comprising a support and the photosensitive composition of claim 1 thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |