| 摘要 |
PURPOSE:To obtain a photopolymerizable compsn. useful as a photosensitive material for a photosensitive lithographic printing plate by compounding a polymerizable compd. having an ethylenic unsatd. bond, photopolymn. initiator expressed by the specific general formula and if necessary, a binder and sensitizer. CONSTITUTION:A polymerizable compd. having an ethylenic unsatd. bond, the photopolymn. initiator expressed by the formula I (Z denotes a non-metallic atom group necessary for forming a heterocyclic nucleus contg. nitrogen, R denotes an aryl group, substd. aryl group, heterocycle and substd. heterocycle) and if necessary a binder and sensitizer are added to repare a photopolymerizable compsn. Such photopolymerizable compsn. is adequately suitable as a photosensitive layer for a photosensitive lithographic printing plate and the preferable base in this case is exemplified by an aluminum sheet subjected to a hydrophiling treatment, zinc sheet, etc. and the solvent to be used in the stage of coating is exemplified by ethylene dichloride, cyclohexanone, etc. |
