Process for the preparation of a radiation curable composition comprising at least one (meth)acrylic copolymer A and at least one radiation curable compound B, said process comprising: (a) in a first copolymerization step, the preparation of a (meth)acrylic copolymer in the presence of at least one non-copolymerizable cyclic compound containing at least one group in the cycle where X = O or NH, by copolymerization of a monomer mixture M comprising: (i) from 40 to 95 wt % of at least one (meth)acrylic monomer, (ii) from 5 to 60 wt % of at least one other copolymerizable monomer different from (meth)acrylic monomer, with the proviso that said monomers and contain no functional group that can react with the cyclic compound during copolymerization, (iii) optionally from 0 to 20 wt % of at least one copolymerizable monomer containing at least one functional group that can react with the cyclic compound, (iv) optionally from 0 to 5 wt % of at least one copolymerizable monomer containing at least one cyclic anhydride, (b) in a subsequent ring opening step, the preparation of the radiation curable compound B by the ring opening of the cyclic compound with at least one radiation curable compound, the percentages by weight are herein relative to the total weight of the monomer mixture M, and said radiation curable composition comprising: (i) from 30 to 95 wt % of (meth)acrylic copolymer A, and (ii) from 5 to 70 wt % of radiation curable compound B, the wt% are herein relative to the total weight of (meth)acrylic copolymer A and of radiation curable compound B. (a) in a first copolymerization step, the preparation of a (meth)acrylic copolymer in the presence of at least one non-copolymerizable cyclic compound containing at least one group in the cycle where X = O or NH, by copolymerization of a monomer mixture M comprising: (i) from 40 to 95 wt % of at least one (meth)acrylic monomer, (ii) from 5 to 60 wt % of at least one other copolymerizable monomer different from (meth)acrylic monomer, with the proviso that said monomers and contain no functional group that can react with the cyclic compound during copolymerization, (iii) optionally from 0 to 20 wt % of at least one copolymerizable monomer containing at least one functional group that can react with the cyclic compound, (iv) optionally from 0 to 5 wt % of at least one copolymerizable monomer containing at least one cyclic anhydride, (i) from 40 to 95 wt % of at least one (meth)acrylic monomer, (ii) from 5 to 60 wt % of at least one other copolymerizable monomer different from (meth)acrylic monomer, with the proviso that said monomers and contain no functional group that can react with the cyclic compound during copolymerization, (iii) optionally from 0 to 20 wt % of at least one copolymerizable monomer containing at least one functional group that can react with the cyclic compound, (iv) optionally from 0 to 5 wt % of at least one copolymerizable monomer containing at least one cyclic anhydride, (b) in a subsequent ring opening step, the preparation of the radiation curable compound B by the ring opening of the cyclic compound with at least one radiation curable compound, the percentages by weight are herein relative to the total weight of the monomer mixture M, (i) from 30 to 95 wt % of (meth)acrylic copolymer A, and (ii) from 5 to 70 wt % of radiation curable compound B,