| 摘要 |
A light-sensitive copying material for the preparation of printing plates and photoresists is described, which material contains, as the light-sensitive compound, a naphthoquinone-diazide-sulfonic acid ester of the general formula I <IMAGE> in which D is a 1,2-naphthoquinone-2-diazide-4-sulfonyl radical or a 1,2-naphthoquinone-2-diazide-5-sulfonyl radical, R1 is a hydrogen atom or a -COCnH2n+1 radial, and R2 is a hydrogen atom or a -CO-OCnH2n+1 radial, n being a number from 10 to 25 and the sum of the carbon atoms of R1+R2 being n+1. The new quinone-diazides are distinguished by a higher solubility and a greater resistance to developer. |
