A photosensitive mixture contains a photosensitive compound and a polymeric binder which s a reaction product of a compound represented by the formula ##STR1## wherein X and Y are the same or different, and each denotes oxygen or sulfur, R.sub.1 and R.sub.2 are the same or different, and each denotes an unsubstituted or substituted alkyl, cycloalkyl or alkoxy radical containing from 1 to 6 carbon atoms; an unsubstituted or substituted aryl or aryloxy radical containing from 6 to 10 carbon atoms; or, together with the phosphorus atom, a 5- or 6-membered heterocyclic ring which is unsubstituted or substituted or which carries a fused benzene ring, with a polymer containing active hydrogen. The novel binders used in the mixture can be easily prepared and yield photosensitive layers of good developability and developer resistance.
一种光敏混合物包含一种光敏化合物和一种聚合物粘合剂,该聚合物粘合剂是由一个化合物表示的反应产物的公式##STR1##其中X和Y相同或不同,每个表示氧或
硫,R.sub.1和R.sub.2相同或不同,每个表示未取代或取代的含有1至6个碳原子的烷基,环烷基或烷氧基; 未取代或取代的含有6至10个碳原子的芳基或芳氧基; 或者与
磷原子一起,形成未取代或取代的5-或6-成员杂环环,或携带融合苯环的杂环环,与含有活性氢的聚合物。混合物中使用的新型粘合剂可以容易地制备,并产生具有良好可开发性和开发剂抵抗性的光敏层。