| 摘要 |
PURPOSE: To provide a photopolymerizable mixture suitable for preparing a printing plate and a photoresist, high in photosensitivity, good in reproducibility of a picture and almost including no component soluble to an acid treating bath from a photoset layer. CONSTITUTION: In the photopolymerizable mixture containing a) a polymer binder (20-90wt.% per total amount of a) and b)), b) acrylic ester or methacrylic ester being a polymerizable compd. and having at least one terminal ethylenical double bond and having >100 deg.C b.p. at normal pressure, c) hexaaryl bisimidazole (0.1-20wt.% per b)) and d) the other photoreaction initiator (0.01-10wt.% per b)), the other photoreaction initiator is 1,3-diaryl-pyrazoline or 1-aryl-3- aralkyenyl-pyrazoline. |
