A radiation-sensitive material is described that comprises a hydrophilic colloid layer containing a dispersed phase of at least one radiation sensitive polymer the polymer chain of which comprises units with side substituents containing oxime ester groups. Upon imagewise exposure to actinic radiation the polymer in the exposed areas reduces the permeability of the hydrophilic colloid layer for an etchant in the absence of any ethylenically unsaturated monomer. The layer having upon image-wise exposure to radiation image-wise differentiations in permeability for an etchant can be used as etch-resist, without needing a washing away step, to modify image-wise the surface of an element e.g. to produce printed circuits or printing forms.
描述了一种辐射敏感材料,其包括一个亲
水胶体层,其中包含至少一种辐射敏感聚合物的分散相,该聚合物链包含具有含氧
肟酯基团的侧基取代物的单元。在图像曝光到光辐射后,聚合物在暴露区域降低了亲
水胶体层对缓蚀剂的渗透性,而没有任何
乙烯基不饱和单体。该层在图像曝光到辐射时,具有图像差异的渗透性,可以用作蚀刻抗蚀材料,无需洗涤步骤,以图像方式修改元素表面,例如生产印刷电路板或印刷版。