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

摘要

A negative-working, radiation-sensitive mixture is provided which contains an organic polymeric binder and a substance which converts radiant energy into heat, wherein the polymeric binder essentially comprises units of the formula (I):in whichR1 is a hydrogen atom or a (C1-C4) alkyl radical,X is a single bond or a (q+1)-valent radical of a (C4-C10) alkane, in which individual methylene groups may be replaced by hetero atoms, of a (C2-C8) alkene or of an isocyclic or heterocyclic, saturated or unsaturated, mono- or polycyclic (C6-C10) ring or ring system,n is from 40 to 80 mol %,m is from 15 to 30 mol %,p is from 1 to 10 mol % andq is an integer from 1 to 3, where q is equal to 1 when X is a single bond,and the polymeric binder has an acid number of from 5 to 150. A recording material comprising a substrate and a layer of this mixture, and a process for the production of a color proof are also provided.