Patent ID: 8097685

Claim:
A hyperbranched-polyester comprising structural units of an aromatic oxycarbonyl unit (P), aromatic and/or aliphatic dioxy units (Q), and an aromatic dicarboxy unit (R), and a trifunctional or higher polyfunctional organic residue (B), wherein the organic residue B is an organic residue of a compound represented by the formula (5) or the formula (6): and the content of B is within a range from 7.5 to 50 mol % based on entire monomers constituting the hyperbranched-polyester, a ratio of p to q and a ratio of p to r are each within a range from 5/95 to 95/5, where p, q and r are molar ratios of structural units P, Q and R, respectively, and the hyperbranched-polyester shows melt liquid crystallinity.