Acid-cleavable radiation-sensitive compounds, positive working radiation-sensitive mixture containing theses compounds, and radiation-sensitive recording material produced with this mixture

Abstract

A radiation-sensitive mixture which contains compounds of the formula I which generate under irradiation sulfonic acids and are cleavable by the latter ##STR1## in which R.sup.1 is an unsubstituted or substituted alkyl, fluorinated alkyl, perfluoroalkyl or aryl radical, R.sup.2 is a hydrogen atom, an unsubstituted or substituted alkyl radical, or an unsubstituted or substituted aryl radical, (R.sup.1 --SO.sub.2 --O--).sub.n X--, or R.sub.3 O--, R.sup.3 and R.sup.4 are identical or different and are unsubstituted or substituted alkyl, cycloalkylalkyl, cycloalkenylalkyl or aralkyl radicals, in which 1 to 3 aliphatic CH.sub.2 or CH groups are optionally replaced by one or more of NR.sup.5, O, S, CO, CO--O, CO--NH, O--CO--NH, CO--NH--CO, NH--CO--NH, SO.sub.2, SO.sub.2 --O or SO.sub.2 --NH, or unsubstituted or substituted alkenyl, alkynyl, cycloalkyl or cycloalkenyl radicals, or R.sup.3 and R.sup.4 are mutually linked to form an unsubstituted or substituted heterocyclic ring, R.sup.5 is an acyl radical, n is an integer from 1 to 3, and X is an alkylene, cyloalkylene, or arylene group. and which, in combination with alkali-soluble binders, give positive-working mixtures which are used especially in recording materials for UV radiation and high-energy radiation. The materials are distinguished by a high resolution in conjunction with high image contrast and excellent storage stability.

Dependencies are inferred from the claim text.