| abstract |
A curable composition having excellent storage stability and capable of forming a cured product having excellent scratch resistance. n The composition comprises a silsesquioxane monomer having a radically polymerizable group in the molecule and a content of a component having a molecular weight measured by gel permeation chromatography (GPC) of not less than 10,000 of less than 9 mass % and a bifunctional polymerizable monomer represented by the following formula (1). n n n n n n n n n n (wherein B and B′ are each an linear or branched alkylene group having 2 to 15 carbon atoms, “c” is an average value of 1 to 20, when a plurality of B's are existent, B's may be the same or different, and R 5 and R 6 are each a hydrogen atom or methyl group.) |