57 An aromatic diazo compound having at least two groups of Formula (I) in the molecule. This aromatic diazo compound can be handled under visible light free from ultraviolet, is high in photosensitivity, and can be produced by a simple synthesis method. The diazo compound has a high solubility in organic solvents, appropriate for use as a photosensitive material for a lithographic printing plate, can be easily developed by an alkaline developing solution mainly based on an alkaline aqueous solution, and has a water solubility appropriate for use in a screen printing plate.
wherein Z1 indicates
(wherein φ1 is arylene or substituted arylene; and -φ2 is
lower alkyl, lower alkylene, or aryl or substituted aryl.)
R1 and R2 are H, alkyl of C1 to C8, or alkyloxy of C1 to C8; X- is anion; and R3 indicates alkyl, saturated alkyl, aralkyl, substituted aralkyl, or a group similar to
57 分子中至少含有两个式(I)基团的芳香重氮化合物。这种芳香重氮化合物可在可见光下处理,不受紫外线影响,光敏性高,可通过简单的合成方法制得。该重氮化合物在有机溶剂中的溶解度高,适合用作平版印刷板的感光材料,可以很容易地通过主要基于碱性
水溶液的碱性显影液显影,并且具有适合用于丝网印刷板的
水溶性。
其中 Z1 表示
(其中 φ1 是芳基或取代芳基;而 -φ2 是
低级烷基、低级亚烷基、芳基或取代芳基)。
R1 和 R2 是 H、C1 至 C8 的烷基或 C1 至 C8 的烷氧基;X- 是阴离子;R3 表示烷基、饱和烷基、芳烷基、取代芳烷基或与之相似的基团。