| abstract |
The present invention provides a novel compound capable of improving the fluidity of a resin while maintaining the glass transition temperature of the resin composition. An ester oligomer having a fluorene structure as a repeating unit composed of a dicarboxylic acid component of the formula (2) having a fluorene structure, a dialcohol component having a fluorene structure, and an end-capping agent. [Z3 and Z4 are aromatic hydrocarbon rings; Ra3, Ra4, Rb3, and Rb4 are alkyl groups, etc .; p3 and p4 are integers of 0 to 4; q3 and q4 are integers of 0 to 4; and R7 and R8 are H or Leaving group] [selection diagram] None |