UV-SENSITIVE ELEMENTS WITH TRIARYLAMINE DERIVATIVES AS SENSITIZERS FOR CTP EXPOSURE

摘要

A UV-sensitive composition and element comprising (a) one or more types of monomers and/or oligomers, each comprising at least one ethylenically unsaturated group accessible to a free-radical polymerization, (b) at least one sensitizer, (c) at least one coinitiator capable of forming free radicals together with the sensitizer (b), said coinitiator being other than metallocenes, and (d) at least one reactive polymeric binder comprising (i) structural units (m1) comprising at least one pendant acidic group, (ii) structural units (m2) comprising at least one pendant free radical polymerizable group, and (iii) optionally further structural units (m3) different from units (m1) and (m2). The sensitizer is a substituted triarylamine of formula (I).