A photopolymerizable composition comprising 100 parts by weight of a compound having at least one ethylenically unsaturated group, 0 to 400 parts by weight of a thermoplastic organic polymer and 0.01 to 20 parts by weight of a photopolymerization initiator comprising an acridine compound represented by general formula (I), and a photopolymerizable element comprising a support and, formed thereon, a layer of said composition, wherein R represents C₂ to C₂₀ alkylene, oxadialkylene or thiadialkylene.
一种可光聚合的组合物,它包括 100 份(重量)具有至少一个
乙烯不饱和基团的化合物、 0 至 400 份(重量)热塑性有机聚合物和 0.01至20份(重量)的光聚合
引发剂,该
引发剂包括通式(I)代表的
吖啶化合物,以及可光聚合元件,该元件包括支撑物和在其上形成的所述组合物层,其中R代表C₂至C₂₀亚烷基、氧二亚烷基或
硫二亚烷基。