POSITIVELY OPERATING RADIATION-SENSITIVE MIXTURE CONTAINING A POLYFUNCTIONAL ALPHA-DIAZO-BETA-KETO ESTER,A PROCESS FOR ITS PREPARATION AND RADIATION-SENSITIVE RECORDING MATERIAL CONTAINING THIS MIXTURE

摘要

Multifunctional alpha -diazo- beta -ketoesters of the general formula I are described …… in which… R<1> denotes an aliphatic, cycloaliphatic or araliphatic or aromatic radical having 4 to 20 carbon atoms, where individual CH2 groups can be replaced by oxygen or sulphur atoms or by …… or NH groups and/or contain keto groups,… X denotes an aliphatic, cycloaliphatic, carbocyclic, heterocyclic or araliphatic radical having 2 to 22 carbon atoms, where individual CH2 groups can be replaced by oxygen or sulphur atoms or by the groups -NR<2>-, -C(O)-O-, -C(O)-NR<2>-, -C(O)- …… -NR<2>-C(O)-NR<3>-, -O-C(O)-NR<2>-, -O-C(O)- …… -O-C(O)-O- or CH groups can be replaced by …… in which R<2> and R<3> independently of one another stand for hydrogen or an aliphatic, carbocyclic or araliphatic radical,… m denotes an integer from 2 to 10 and… n denotes an integer from 0 to 2,… with the proviso that… m-n is >/= 2. …The compounds mentioned are used as photoactive components in radiation-sensitive mixtures.