| abstract |
A polymerizable monomer capable of giving a resin having a good refractive index without using inorganic oxide fine particles or heavy atoms, and a heat-resistant high refractive index resin composition obtained by using the polymerizable monomer. A polymerizable monomer having a 1,3,5-triazine ring, which is represented by the formula (1). [In Formula (1), one or two of A 1 to A 3 is a group —N (R 1 ) CH 2 —CH═CH 2 or a group —O—CH 2 —CH═CH 2 , and the rest Is a group —N (R 2 ) (R 3 ) or a specific nitrogen-containing heterocyclic group. ] [Selection figure] None |