| 摘要 |
A photopolymerizable mixture is disclosed that comprises, a) a polymeric binder, b) an acrylate or alkacrylate of a polyhydric alcohol containing one or more urea groups and one or more urethane groups, c) a photoreducible dye as photoinitiator, d) a trihalomethyl compound which can be cleaved by irradiation, and e) an acridine or phenazine compound which is active as a photoinitiator. The mixture is suitable for the production of printing plates and photoresists and is distinguished by an increased shelf life. |
