LIGHT-SENSITIVE COMPOSITION INCLUDING A DIAZONIUM SALTPOLYCONDENSATION PRODUCT AND A BRANCHED POLYURETHANE BINDER

摘要

A llght-sensitive composition for the preparation of printing plates and photoresists is described, which comprises as the light-sensitive compound a diazonium salt polycondensatlon product and as the binding agent a branched polyurethane resin which contains no terminal isocyanate groups and the terminal units of which are at least partially derived from dihydroxy comprises. The printing plates produced with this llght-sensitive composition are easily developable with aqueous developer solutions and yield long press runs.