초록 ▼

A light-sensitive composition is described, containing: (A) a light-sensitive diazo compound, (B) a combination of Polymer (B-1) and Polymer (B-2), and (C) an epoxy resin. Polymer (B-1) is a polymer having the structural units of the general formulae (i), (ii) and (iii). Polymer (B-2) is a polymer h

A light-sensitive composition is described, containing: (A) a light-sensitive diazo compound, (B) a combination of Polymer (B-1) and Polymer (B-2), and (C) an epoxy resin. Polymer (B-1) is a polymer having the structural units of the general formulae (i), (ii) and (iii). Polymer (B-2) is a polymer having the structural units of the general formulae (iv), (v) and (vi). [Figure] (i) [Figure] (ii) [Figure] (iii) [Figure] (iv) [Figure] (v) [Figure] (vi) wherein R1 is a hydrogen atom or a methyl group, R2 is an unsubstituted or substituted benzyl group, a lower alkyl group, or a halogen-substituted lower alkyl group, R3 is a hydrogen atom, a lower alkyl group, or a halogen-substituted lower alkyl group, R4 is a tert- or iso-butyl group, and R5 is a lower alkyl group. This composition is a negative-type light-sensitive composition and is used to prepare a lithographic printing plate, for example. This printing plate is superior in lipophilic nature and also in mechanical properties such as abrasion resistance.

대표청구항 ▼

A negative-working light-sensitive composition consisting essentially of in admixture: (A) a light-sensitive diazo compound which is a salt of a 4-diazodiphenylamine/formaldehyde condensate; (B) a polymeric compound; and (C) an epoxy resin, wherein the polymeric compound (B) is a combination of Poly

A negative-working light-sensitive composition consisting essentially of in admixture: (A) a light-sensitive diazo compound which is a salt of a 4-diazodiphenylamine/formaldehyde condensate; (B) a polymeric compound; and (C) an epoxy resin, wherein the polymeric compound (B) is a combination of Polymer (B-1) and Polymer (B-2) as described below: Polymer (B-1): Polymer containing the structural units of the following general formulae (i), (ii) and (iii): [Figure] (i) [Figure] (ii) [Figure] (iii) (wherein R1 is a hydrogen atom or a methyl group, R2 is an unsubstituted or substituted benzyl group, a lower alkyl group). or a halogen-substituted lower alkyl group, and R3 is a hydrogen atom, a lower alkyl group, or a halogen-substituted lower alkyl group: Polymer (B-2): Polymer containing the structural units of the following general formulae (iv), (v) and (vi): [Figure] (iv) [Figure] (v) [Figure] (vi) (wherein R1 is the same as defined above, R4 is a tert- or iso-butyl group, and R5 is a lower alkyl group), and wherein the proportion of component (A) is from about 1 to 40% by weight, the proportion of the polymer (B-1) is from about 30 to 75% by weight, the proportion of the polymer (B-2) is from about 0.1 to 20% by weight, and the proportion of the epoxy resin (C) is from about 5 to 50% by weight.