EP0021718A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Photosensitive condensation product, photosensitive compositions and lithographic printing plates containing said condensation product
Assignee: Konica Minolta Inc
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Filing: 1980-06-10
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Granted: —
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Expires: 2000-06-10
Abstract
Abstract A photosensitive composite is provided for use in photosensitive lithographic printing plates which is a condensation product of sulfonylchloride of an o-benzoquinonediazid or o-naphthoquinonediazid and a polyhydric phenol resin possessing 3 or more units having the following general formula: where R, is a hydrogen atom or a hydroxyl group, R 2 is a hydrogen or halogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, R 3 is a hydrogen atom, an alkyl group having 1 to4 carbon atoms, an aryl group of a substituted aryl group and R 4 is a hydrogen or halogen atom or an alkyl, alkoxy or nitro group.
Inventors
- 👤 Masafumi Uehara
- 👤 Fumio Shimada
- 👤 Akio Iwaki
- 👤 Masatoshi Matsuzaki
- 👤 Yoko Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 10:49
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/023
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
A composite characterised in that it is a condensation product of sulfonylchloride of an o-benzoquinonediazid or o-naphthoquinonediazid and a polyhydric phenol resin possessing 3 or more units having the following general formula: where R 1 is a hydrogen atom or a hydroxyl group, R 2 is a hydrogen or halogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, R 3 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an aryl group or a substituted aryl group and R 4 is a hydrogen or halogen atom or an alkyl, alkoxy or nitro group.
Claim 2
Dependent Claim
102 words
A composite characterised in that it is a condensation product of sulfonylchloride of an o-benzoquinonediazid or o-naphthoquinonediazid and a polyhydric phenol resin possessing 3 or more units having the following general formula: where R 1 is a hydrogen atom or a hydroxyl group, R 2 is a hydrogen or halogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, R 3 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an aryl group or a substituted aryl group and R 4 is a hydrogen or halogen atom or an alkyl, alkoxy or nitro group.
Claim 3
Dependent Claim
26 words
A composite according to claim 1 characterised in that R 1 represents a hydrogen atom and R 2 represents a hydrogen atom or a methyl group.
Claim 4
Dependent Claim
25 words
A composite according to claim 1 characterised in that R 3 represents a hydrogen atom and R4 represents a hydrogen atom or a methyl group.
Claim 5
Dependent Claim
26 words
A composite according to any one of claims 1 to 3 characterised in that the molecular weight of the polyhydric phenol resin is 800 to 4000.
Claim 6
Dependent Claim
50 words
A composite according to any one of claims 1 to 4 characterised in that the molar ratio of the sulfonylchloride of o-benzoquinonediazid or o-naphthoquinonediazid to the polyhydric phenol -is 1:0.4 to 1:3 when R 1 is a hydroxy group or 1:0.4 to 1:2 when R 1 is a hydrogen atom.
Claim 7
Dependent Claim
63 words
A composite according to any one of claims 1 to 5 characterised in that it is a condensation product of sulfonylchloride of o-naphthoquinonediazid and a polyhydric phenol resin as defined in any one of claims 1 to 5 in which R 4 is a hydrogen or halogen atom or an alkyl or alkoxy group having 1 to 8.carbon atoms or a nitro group.
Claim 8
Dependent Claim
30 words
A photosensitive composition comprising a photosensitive material and a carrier or diluent characterised in that the photosensitive material is a composite as claimed in any one of the preceding claims.
Claim 9
Dependent Claim
31 words
A photosensitive lithographic printing plate having a photosensitive layer coated on a support characterised in that the layer contains a composite as claimed in any one of claims 1 to 6.
References Cited (Backward Citations)
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