Radiation-sensitive composition, radiation-sensitive recording material produced therewith and process for the production of relief records

摘要

The invention relates to a normally positive-working radiation-sensitive composition which contains, as essential constituents, a water-insoluble binder which is soluble in aqueous alkaline solutions, a 1,2-quinone diazide and a compound which reduces the developer solubility of the exposed regions by thermal treatment. In this composition at least one urethane of the general formula I is present as the compound which reduces the developer solubility: IMAGE where R1 is hydrogen or methyl, R2 is hydrogen, alkyl, optionally substituted aryl or an optionally substituted arylaminocarbonyl, R3 is an optionally substituted arylene or arylene-alkylene, Q is hydrogen, -CH4-p, CR5R6, where R5 and R6 may be identical or different and are hydrogen, alkyl or aryl, carbonyl, an oxygen or sulphur atom or sulphonyl, m is 1, 2 or 3, and n is a number /= 1 and /= 50, and p is 1, 2 or 3. The composition is suitable for producing radiation-sensitive recording material which has good storage life accompanied by high radiation sensitivity and exhibits a wide image reversal tolerance in a process for producing relief images.