Photopolymerizable composition.

摘要

Disclosed is a photopolymerizable composition comprising a vinyl monomer and a phototopolymerization initiator. The photopolymerization initiator is a combination of (a) at least one compound selected from a mercaptocarboxylic acid, a polysulfide and a thiosphoric derivative with (b) an alpha -diketone. The composition may include a storage stabilizer and/or a filler. The composition has an excellent storage stability under heat and circumstantial light, with no coloration and aging change for the tone and providing products with excellent mechanical performances.