申请人:KONICA CORPORATION
公开号:EP0083971A2
公开(公告)日:1983-07-20
The developability of a positive-working photosensitive composition comprising (a) an o-quinonediazide compound is enhanced by incorporating (b) a condensed resin containing a condensation unit composed of an aromatic compound having a carboxylic group and a phenolic ahydroxyl group, and an aldehyde or ketone. Said condensation unit has preferably the formula:
wherein n is 1 or 2, R, is hydrogen, hydroxyl, acyloxy, alkyl, alkoxy, halogen, which may be the same or different when n is 2; and R2 and R3, which may be the same or different, are each hydrogen, alkyl having 1 to 4 carbon atoms, phenyl or substituted phenyl.
通过加入(b)含有缩合单元的缩合树脂,可提高由(a)邻喹酮噻嗪化合物组成的正片工作感光组合物的显影能力,该缩合单元由具有羧基和酚羟基的芳香族化合物以及醛或酮组成。所述缩合单元最好具有如下式子
其中 n 为 1 或 2,R 为氢、羟基、酰氧基、烷基、烷氧基、卤素,当 n 为 2 时可以相同或不同;R2 和 R3 可以相同或不同,各自为氢、具有 1 至 4 个碳原子的烷基、苯基或取代苯基。