| 摘要 |
<p>PURPOSE: An aromatic liquid crystal polyester solution composition, a polyester film prepared from the composition, its preparation method, a preparation method of multilayered printed circuit board and a dielectric film obtained by using the composition are provided, to obtain a liquid crystal polyester film with reduced anisotropy by using easily treatable solvents. CONSTITUTION: The aromatic liquid crystal polyester solution composition 100 parts by weight of a solvent containing at least 30 wt.% of the Cl-substituted phenol compound represented by the formula 1; 0.01-100 parts by weight of an aromatic liquid crystal polyester; and optionally 1-100 parts by weight of an inorganic filler. wherein A is H, a halogen atom or a tri-halogenated methyl group; and i is an integer of 1-4. Preferably the aromatic liquid crystal polyester comprises 30-80 mol% of a structure unit derived from p-hydroxybenzoic acid; 10-35 mol% of a structure unit derived from at least one compound selected from the group consisting of hydroquinone, resorcinol, 4,4'-dihydrobiphenyl, bisphenol A and bisphenol S; and 10-35 mol% of a structure unit derived from at least one compound selected from the group consisting of terephthalic acid, isophthalic acid and naphthalenedicarboxylic acid.</p> |
