AROMATIC LIQUID CRYSTAL POLYESTER SOLUTION COMPOSITION, FILM OBTAINED FROM THE COMPOSITION AND PREPARATION METHOD THEREOF

摘要

PURPOSE: An aromatic liquid crystal polyester solution composition, a film obtained from the composition and its preparation method are provided, to improve the electrical properties and mechanical strength of a film. CONSTITUTION: The aromatic liquid crystal polyester solution composition comprises a solvent; aromatic liquid crystal polyester; 100 parts by weight of an inorganic filler; and 0.5-10 parts by weight of a coupling agent which has a boiling point of 250 deg.C or more and a pH of 4-8 in aqueous solution state. Preferably the aromatic liquid crystal polyester comprises a repeating unit derived from an aromatic hydroxycarboxylic acid, a repeating unit derived from an aromatic diol and a repeating unit derived from an aromatic dicarboxylic acid; and the solvent contains a halogen-substituted phenolic compound.