| abstract |
Provided are a thermoplastic resin having a high refractive index, a low b value, and high moist-heat resistance, and an optical lens, etc., in which such a thermoplastic resin is used.　According to an embodiment of the present invention, there is provided a thermoplastic resin including constituent units represented by general formula (1). (In formula (1), R1 and R2 each independently represent: a hydrogen atom; a fluorine atom; a chlorine atom; a bromine atom; an iodine atom; a C1-6 alkyl group; a monocyclic or polycyclic C6-36 aryl group; a monocyclic or polycyclic heteroaryl group having 5-36 ring atoms, 1, 2, 3, or 4 of the ring atoms being selected from nitrogen, sulfur, and oxygen, and the other ring atoms being carbon in the heteroaryl group; a C2-6 alkenyl group; a C1-6 alkoxy group; or a C7-17 aralkyl group. In formula (1), X, a, and b are each as described in the present specification.) |