A diazotype material is disclosed containing a novel 2-substituent-3-thio-5-alkoxybenzene diazonium compound of formula I ##SPC1## wherein X is an anion, A is the group ##EQU1## or -- OR.sub.4 in which R.sub.1 is hydrogen, an alkyl radical with 1-8 carbon atoms, a substituted phenyl, cycloalkyl, or aralkyl radical or a heterocyclic radical, R.sub.2 is an alkyl radical with 1-8 carbon atoms, a --COOR.sub.5 group in which R.sub.5 signifies hydrogen, an alkyl radical with 1-8 carbon atoms, a cycloalkyl, aryl, aralkyl, or alkylaryl radical or a heterocyclic radical, or a group of ##EQU2## in which R.sub.6 and R.sub.7 stand independently of one another for hydrogen or a hydroxy, alkoxy, alkyl with 1-4 carbon atoms, or phenyl radical, R.sub.1 and R.sub.2 together with the nitrogen may be a morpholino, a methyl-substituted morpholino, pyrrolidino, or piperidino group, R.sub.3 is an alkyl radical with 1-8 carbon atoms, an aralkyl, alkoxyaryl, haloaryl, alkoxyalkyl, or cycloalkyl radical or a heterocyclic radical, and R.sub.4 is an alkyl, branched or unbranched lower alkyl, cycloalkyl, or aralkyl radical.
A radiation sensitive compound contains at least two groups having the structure ##STR1## in which Ar represents a divalent or other polyvalent radical derived from an aromatic or heteroaromatic compound; X and X' which may be the same or different, each represents O, S or an imino group, provided that at least one of X and X' is an imino group; Y represents O or S; R represents a single bond or a divalent or other polyvalent radical and A.sup.- is an anion. Radiation sensitive compositions comprising the compound and optionally a resin may be used to produce radiation sensitive plates for lithographic printing plate production.
A photosensitive composition turning shicky by light exposure, which comprises a salt or p-aminobenzenediazonium compound and at least one of salts of o- and m-aminobenzenediazonium compounds, has a distinguished effect in forming a phosphor screen of a color picture tube.
