LIGHT-SENSITIVE MIXTURE AND COPYING MATERIAL COMPRISING AN O-NAPHTHOQUINONDEDIAZIDE

摘要

A light-sensitive mixture comprising a light-sensitive naphthoquinone-diazide-sulfonic acid ester corresponding to the formula: I wherein D represents a 1,2-naphthoquinone-2-diazide-5-sulfonyl or -4-sulfonyl radical; R1, R2, R3, R1', R2' and R3' each represent hydrogen, halogen, alkyl groups having 1 to 4 carbon atoms or radicals of the formula DO and n represents an integer from 2 to 18; not more than three DO radicals in total being present on one benzene ring. The mixture is useful for preparing printing plates or photoresists.