Abstract
A fluorinated aromatic polyimide derived from 1,4-bis (4-aminophenoxy)-2-[(3', 5'-ditrifluoromethyl)phenyl]benzene was prepared through a typical two-step polymerization method. The polyimide had a high thermal stability, and the temperature at the 5% weight loss was 509°C in nitrogen. It showed good solubility in NMP, DMAc, DMF, Chloroform and THF at room temperature. The dielectric constant estimated from the average refractive index was 2.71.
