| abstract |
A photopolymerizable mixture is described which comprises a polymeric binder, a polymerizable compound having at least one terminal ethylenic double bond and a boiling point above 100 ° C. at normal pressure, a hexaarylbisimidazole and a 1,3-diaryl- or a 1-aryl-3-aralkenylpyrazoline contains. The mixture is suitable for the production of printing plates and photoresists and is characterized by high sensitivity to light and low sensitivity to acidic solutions. |