Light-sensitive compositions including a polymer of the type that is reactable with an azide sensitizer when exposed to light and a sensitizing amount of a naphthalene sensitizer having ortho diazo and oxo substituents at the 1,2 or the 2,1 positions of the naphthalene nucleus and further having an azidosulfonyl substituent group of which the sulfonyl moiety is bonded directly to the naphthalene nucleus at the 4 or the 5-position, are advantageous in the preparation of positive-working photolithographic materials. IN the azidosulfonyl group, the azido moiety can be linked directly or indirectly to the sulfonyl moiety, such as in the compounds 2-diazo-1,2-dihydro-1-oxo-5(4'-azidophenoxysulfonyl)naphthalene and 5-azidosulfonyl-2-diazo-1,2-dihydro-1-oxonaphthalene. The light-sensitive compositions can be coated on support materials to prepare composite photographic elements having utility as photolithographic printing masters and photoresists for etching operations.
敏感于光的组合物包括一种聚合物,当暴露在光线下并与偶氮敏化剂反应时,该聚合物可以与偶氮敏化剂反应,并且还包括足够敏化的
萘敏化剂,该敏化剂在
萘核的1,2或2,1位置具有ortho diazo和oxo取代基,并且在4或5位置直接与
萘核结合的azidosulfonyl取代基。在azidosulfonyl基团中,偶氮基团可以直接或间接地与磺酰基团连接,例如在化合物2-偶氮基-1,2-二氢-1-氧-5(4'-
偶氮苯氧基磺酰基)
萘和5-偶氮基磺酰基-2-偶氮基-1,2-二氢-1-氧
萘中。这些敏感于光的组合物可以涂覆在支撑材料上,制备复合摄影元素,用作光刻印刷母版和用于蚀刻操作的光阻剂。