RADIOSENSITIVE COMPOUND THAT CAN BE CLEAVED BY ACID, RADIOSENSITIVE MIXTURE CONTAINING THE COMPOUND, AND RADIOSENSITIVE RECORDING MATERIAL PREPARED FROM THE MIXTURE

摘要

A radiation-sensitive mixture is described which contains sulphonic acid derivatives of the general formula I IMAGE in which R1 denotes an alkyl, haloalkyl or aryl radical, R2 denotes a hydrogen atom, an alkyl, alkenyl or aryl radical or the group (R1-SO2-O-)nX-, R3 denotes a cycloalkylenedialkyl, cycloalkenylenedialkyl, arylenedialkyl or heteroylenedialkyl group, an alkylene, alkenylene, alkynylene, cycloalkylene or arylene group, X denotes an alkyl, cycloalkyl or aryl group R1-SO2-O-substituted by 1 to 3 sulphonyloxy groups, Y denotes O, S, CO, CO-O, SO2, SO2-O, NR4, CO-NH, O-CO-NR5, NH-CO-NR5 or NR5-CO-O, Z denotes 0, CO-NR6, O-CO-NR6 or NH-CO-NR6, R4 denotes an acyl radical, R5 denotes a hydrogen atom, or an alkyl, cycloalkyl, alkenyl, alkynyl or aryl radical, R6 denotes an alkyl, cycloalkyl, alkenyl, alkynyl or aryl radical, k denotes an integer from 0 to 4, m denotes an integer greater than 1 and n denotes an integer from 1 to 3, where R3 and Y can have identical or different meanings in repeating groups (R3-Y-). On irradiation, the compounds form sulphonic acids and can be cleaved by means of these. In combination with alkali-soluble binders, they give positive-working mixtures, which are used, in particular, in recording materials for UV radiation and energy-rich radiations. The materials are distinguished by high resolution in combination with high image contrast and outstanding storability.