| abstract |
O.Z. 0050/41045 Abstract of the Disclosure: A reaction product useful for preparing radiation-sensitive matarials, in par-ticular materials whose solubility in water or aqueous alkali increases on irradiation, contains urea and urethane groups and also carboxyl groups and is obtained by reaction of i) an ethylenically monounsaturated or polyunsaturated mono- or polyalcohol with ii) a di- or polyisocyanate, iii) at least one amino compound and iv) at least one anhydride of an at least dibasic carboxylic acid, the number of NCO and anhydride groups in ii) and iv) being equal to or less than the number of groups in i) and iii) which are reactive therewith. |