Light-sensitive compositions

Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...

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430196, 430285, 430286, 430287, 430919, 430920, 430926, 430927, 430197, G03C 171

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active

043562477

ABSTRACT:
A light-sensitive composition particularly suitable for making light-sensitive lithographic printing plates is described composed of a mixture of a sensitizer and a photo-crosslinkable polymer, or a mixture of a sensitizer, a compound including a light-sensitive azido group and a polymer reactive with a decomposate of azido groups to be formed upon exposure to light, and a sensitizer represented by the formula (I) ##STR1## wherein A represents a non-metallic atomic group necessary for forming a heterocyclic ring containing nitrogen; R.sub.1 represents an alkyl group or a substituted alkyl group; R.sub.2 represents hydrogen, an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group; and Y and Z each represents an oxygen atom or a sulfur atom.

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patent: 4148658 (1979-04-01), Kondoh et al.
patent: 4282309 (1981-08-01), Laridon et al.
Langford, J. F., et al., Research Disclosure, 3/1977, #15568.

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