A coating composition comprising : a) at least one urethane (meth)acrylate oligomer of formula (I) wherein 2 ≤ n ≤ 20 and 2 ≤ m ≤ 4 ; R 1 being a diisocyanate radical selected from the group consisting of alkylene, cycloalkylene, arylene, arylkylene and combinations thereof; R 2 being a diol radical selected from the group consisting of alkylenes, cycloalkylenes and arylalkylenes and combinations thereof; R 3 comprises a moiety of -R 4 -OH, so that it has a mean free OH value of about 0.01 mg KOH/g to about 100 mg KOH/g and R 3 comprises a moiety of -R 5 -(meth)acryloyl ; R 4 and R 5 being a bivalent radical selected from the group consisting of alkylenes, cycloalkylenes and arylalkylenes and combinations thereof, with R 4 and R 5 being identical or different from each other; and wherein the at least one urethane (meth)acrylate oligomer has a number average molecular weight Mn measured by GPC, of from about 2,000 g/mol to about 50,000 g/mol; b) at least one cycloaliphatic (meth)acrylate ; and c) optionally, at least one allylic compound from allylic monomers and/or oligomers bearing at least one allylic group, d) optionally, at least one component selected from the group of additives consisting of an adhesion promoter, a photo-initiator, a thiol compound, a pigment, a dye, a plasticizer and combinations thereof. a) at least one urethane (meth)acrylate oligomer of formula (I) wherein 2 ≤ n ≤ 20 and 2 ≤ m ≤ 4 ; R 1 being a diisocyanate radical selected from the group consisting of alkylene, cycloalkylene, arylene, arylkylene and combinations thereof; R 2 being a diol radical selected from the group consisting of alkylenes, cycloalkylenes and arylalkylenes and combinations thereof; R 3 comprises a moiety of -R 4 -OH, so that it has a mean free OH value of about 0.01 mg KOH/g to about 100 mg KOH/g and R 3 comprises a moiety of -R 5 -(meth)acryloyl ; R 4 and R 5 being a bivalent radical selected from the group consisting of alkylenes, cycloalkylenes and arylalkylenes and combinations thereof, with R 4 and R 5 being identical or different from each other; and wherein the at least one urethane (meth)acrylate oligomer has a number average molecular weight Mn measured by GPC, of from about 2,000 g/mol to about 50,000 g/mol; R 1 being a diisocyanate radical selected from the group consisting of alkylene, cycloalkylene, arylene, arylkylene and combinations thereof; R 2 being a diol radical selected from the group consisting of alkylenes, cycloalkylenes and arylalkylenes and combinations thereof; R 3 comprises a moiety of -R 4 -OH, so that it has a mean free OH value of about 0.01 mg KOH/g to about 100 mg KOH/g and R 3 comprises a moiety of -R 5 -(meth)acryloyl ; R 4 and R 5 being a bivalent radical selected from the group consisting of alkylenes, cycloalkylenes and arylalkylenes and combinations thereof, with R 4 and R 5 being identical or different from each other; and wherein the at least one urethane (meth)acrylate oligomer has a number average molecular weight Mn measured by GPC, of from about 2,000 g/mol to about 50,000 g/mol; b) at least one cycloaliphatic (meth)acrylate ; and c) optionally, at least one allylic compound from allylic monomers and/or oligomers bearing at least one allylic group, d) optionally, at least one component selected from the group of additives consisting of an adhesion promoter, a photo-initiator, a thiol compound, a pigment, a dye, a plasticizer and combinations thereof. <EOS>