| abstract |
A novel polyester resin having a good balance of properties such as high refractive index, high heat resistance, and low birefringence is provided. In a polyester resin having a dicarboxylic acid component and a diol component as polymerization components, the dicarboxylic acid component is composed of a dicarboxylic acid component having a fluorene skeleton, and the diol component is 9,9-bis (hydroxy ( It is composed of poly) alkoxyaryl) fluorenes and 9,9-bis (aryl-hydroxy (poly) alkoxyaryl) fluorenes. [Selection figure] None |