Negativ-working radiation-sensitive mixture for the production of a recording material which is imageable by heat or infrared laser beams

摘要

In a negative-working radiation sensitive mixture of an organic polymeric binder and a substance converting radiant energy into heat, the binder comprises units of 40-80 mol. % vinyl acetal, 15-30 mol. % vinyl alcohol and 1-10 mol. % monovinyl ester of a polycarboxylic acid and has an acid number of 5-150. In a negative-working radiation sensitive mixture of an organic polymeric binder and a substance converting radiant energy into heat, the binder comprises units of 40-80 mol. % vinyl acetal, 15-30 mol. % vinyl alcohol and 1-10 mol. % monovinyl ester of a polycarboxylic acid of formula (I) and has an acid number of 5-150: R<1> = hydrogen (H) or 1-4 carbon (C) alkyl; X = a single bond or (q+1)-valent residue of a 4-10 C alkane, in which individual methylene groups may be replaced by hetero-atoms, a 2-8 C alkene or an iso- or heterocyclic, (un)saturated mono- or polycyclic 6-10 C ring (system); n = 40-80 mol. %; m = 15-30 mol. %; p = 1-10 mol. %; q = 1-3; q = 1 if X = a single bond.