A polymerizable thioxanthone according to Formula: wherein, A represents a thioxanthone moiety, optionally substituted in a 1-position by a halogen, an alkyl group or an alkoxy group; R1 and R2 are independently selected from the group consisting of a hydrogen, an alkyl group, an alkenyl group, an alkynyl group, an aryl group and a heteroaryl group; n represent 1 or 2; and R3 represents a moiety comprising at least one free radical polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrene group, a maleate, a fumarate, an itaconate, a vinyl ether, a vinyl ester, an allyl ether and an allyl ester; wherein the alkyl group means all variants possible for each number of carbon atoms in the alkyl group, includes an alkaryl group and the alkyl group is a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms; wherein the alkenyl group is a substituted or unsubstituted alkenyl group including 1 to 15 carbon atoms; wherein the alkynyl group is a substituted or unsubstituted alkynyl group; wherein the aryl group is a substituted or unsubstituted aryl group including 6 to 15 carbon atoms; wherein the heteroaryl group is a substituted or unsubstituted heteroaryl group including 6 to 15 carbon atoms; wherein the alkoxy group is a substituted or unsubstituted alkoxygroup including 1 to 15 carbon atoms; wherein a substituted alkyl group, a substituted alkenyl group, a substituted alkynyl group, a substituted aryl and a substituted heteroaryl group are substituted by one or more subtituents selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and tertiary-butyl, methylester, ethylester, amide, methoxy, ethoxy, thioether, ketone, aldehyde, sulfoxide, sulfone, sulfonate ester, sulphonamide, -Cl, -Br, -I, -OH, -SH, -CN and -NO 2. A represents a thioxanthone moiety, optionally substituted in a 1-position by a halogen, an alkyl group or an alkoxy group; R1 and R2 are independently selected from the group consisting of a hydrogen, an alkyl group, an alkenyl group, an alkynyl group, an aryl group and a heteroaryl group; n represent 1 or 2; and R3 represents a moiety comprising at least one free radical polymerizable group selected from the group consisting of an acrylate, a methacrylate, an acrylamide, a methacrylamide, a styrene group, a maleate, a fumarate, an itaconate, a vinyl ether, a vinyl ester, an allyl ether and an allyl ester; wherein the alkyl group means all variants possible for each number of carbon atoms in the alkyl group, includes an alkaryl group and the alkyl group is a substituted or unsubstituted alkyl group including 1 to 15 carbon atoms; wherein the alkenyl group is a substituted or unsubstituted alkenyl group including 1 to 15 carbon atoms; wherein the alkynyl group is a substituted or unsubstituted alkynyl group; wherein the aryl group is a substituted or unsubstituted aryl group including 6 to 15 carbon atoms; wherein the heteroaryl group is a substituted or unsubstituted heteroaryl group including 6 to 15 carbon atoms; wherein the alkoxy group is a substituted or unsubstituted alkoxygroup including 1 to 15 carbon atoms; wherein a substituted alkyl group, a substituted alkenyl group, a substituted alkynyl group, a substituted aryl and a substituted heteroaryl group are substituted by one or more subtituents selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and tertiary-butyl, methylester, ethylester, amide, methoxy, ethoxy, thioether, ketone, aldehyde, sulfoxide, sulfone, sulfonate ester, sulphonamide, -Cl, -Br, -I, -OH, -SH, -CN and -NO 2.