The invention provides photopolymerizable compositions comprising (A) at least one ethylenically unsaturated photopolymerizable fluocarbon compound selected from polyfluoroalkyl monoacrylates, polyfluoroalkyl monomethacrylatesor polyfluoroalkyldiacrylates and (B) at least one photoinitiator of the formula (I) R is a radical of the formula (II) s is a number of 1 to 4, r is a number of 1 to 2; Y is a single bond or is a divalent linker group A if s is 1, is a radical A0, where A0 is C1-C3oalkyl, C1-C30alkenyl, C1-C30alkynyl or C1-C30aralkyl the radicals being substituted by at least two fluorine atoms and optionally further substituted by OH-, C1-C4alkoxy-, phenyl-, naphthyl-, halogen-, CN-, SR7-, NR8R9- and/or -O(CO)R10-; and the radical A0 is uninterrupted or interrupted by one or more -O-, -S- or -NR12-; A if s is 1, is a radical A1; where A1 is C1-C30alkylene, C1-C3oalkenylene, Cl-C3oalkynylene or C1-C30aralkylene, the radicals being substituted by at least two fluorine atoms and optionally further substituted by OH-, C1-C4alkoxy-, phenyl-, naphthyl-, halogen-, CN-, SR7-, NR8R9- and/or -O(CO)R10-; and the radical A1 is uninterrupted or interrupted by one or more -0-, -S- or -NR12-.
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