The invention relates to curable compositions Z, which contain a binding agent BM that carries at least one ethylenically unsaturated group, in addition to particles P that have at least one ethylenically unsaturated group on their surface and comprise groups of general formula (I) =Si-CR<3>2-A-D-C. In said formula, R<3> represents hydrogen or a hydrocarbon group comprising between 1 and 12 carbon atoms, the carbon chain of said hydrocarbon group being interrupted by non-adjacent oxygen, sulphur or NR<4> groups, R<4> represents hydrogen or a hydrocarbon group comprising between 1 and 12 carbon atoms, A represents oxygen, sulphur, =NR<4> or =N-(D-C), D represents a carbonyl group, or an alkene, cycloalkene or arylene group comprising between 1 and 12 carbon atoms, the carbon chain being interrupted by non-adjacent oxygen, sulphur, or NR<4> groups and C represents a terminal, unsaturated group. |