A curable composition, comprising a) a reactive organopolysiloxanes, bearing reactive groups selected from the group consisting of methacrylate groups, and a catalyst effective to cause condensation of the respective functional groups, and the composition i) further comprises a free radical initiator effective to polymerize the (meth)acrylate groups, or ii) further comprises an Si-H functional crosslinker and an effective amount of a hydrosilylation catalyst whereas the reactive organopolysiloxane is prepared by hydrolytic condensation, containing on average a) at least two reactive functional groups per molecule, selected from the group consisting of (meth)acrylate groups, and mixtures thereof, the functional groups SiC-bonded to silicon atoms in the reactive organopolysiloxanes, and b) alkoxy groups, in a concentration of less than 20 weight percent based on the total weight of the reactive organopolysiloxanes calculated on the basis of methoxy groups, and c) non-reactive optionally substituted hydrocarbon groups Si-C bonded to silicon atoms of the reactive organopolysiloxane, the non-reactive optionally substituted hydrocarbon groups present in a ratio of >1 hydrocarbon group per atom of Si in the reactive organopolysiloxane. a) a reactive organopolysiloxanes, bearing reactive groups selected from the group consisting of methacrylate groups, and a catalyst effective to cause condensation of the respective functional groups, and the composition i) further comprises a free radical initiator effective to polymerize the (meth)acrylate groups, or ii) further comprises an Si-H functional crosslinker and an effective amount of a hydrosilylation catalyst whereas the reactive organopolysiloxane is prepared by hydrolytic condensation, containing on average a) at least two reactive functional groups per molecule, selected from the group consisting of (meth)acrylate groups, and mixtures thereof, the functional groups SiC-bonded to silicon atoms in the reactive organopolysiloxanes, and b) alkoxy groups, in a concentration of less than 20 weight percent based on the total weight of the reactive organopolysiloxanes calculated on the basis of methoxy groups, and c) non-reactive optionally substituted hydrocarbon groups Si-C bonded to silicon atoms of the reactive organopolysiloxane, the non-reactive optionally substituted hydrocarbon groups present in a ratio of >1 hydrocarbon group per atom of Si in the reactive organopolysiloxane. i) further comprises a free radical initiator effective to polymerize the (meth)acrylate groups, or ii) further comprises an Si-H functional crosslinker and an effective amount of a hydrosilylation catalyst whereas the reactive organopolysiloxane is prepared by hydrolytic condensation, containing on average a) at least two reactive functional groups per molecule, selected from the group consisting of (meth)acrylate groups, and mixtures thereof, the functional groups SiC-bonded to silicon atoms in the reactive organopolysiloxanes, and b) alkoxy groups, in a concentration of less than 20 weight percent based on the total weight of the reactive organopolysiloxanes calculated on the basis of methoxy groups, and c) non-reactive optionally substituted hydrocarbon groups Si-C bonded to silicon atoms of the reactive organopolysiloxane, the non-reactive optionally substituted hydrocarbon groups present in a ratio of >1 hydrocarbon group per atom of Si in the reactive organopolysiloxane. a) at least two reactive functional groups per molecule, selected from the group consisting of (meth)acrylate groups, and mixtures thereof, the functional groups SiC-bonded to silicon atoms in the reactive organopolysiloxanes, and b) alkoxy groups, in a concentration of less than 20 weight percent based on the total weight of the reactive organopolysiloxanes calculated on the basis of methoxy groups, and c) non-reactive optionally substituted hydrocarbon groups Si-C bonded to silicon atoms of the reactive organopolysiloxane, the non-reactive optionally substituted hydrocarbon groups present in a ratio of >1 hydrocarbon group per atom of Si in the reactive organopolysiloxane.