Patent ID: 8143355

Claim:
A method of synthesizing the polymer compound having a unit represented by the following formula (2): wherein A represents linear or branched alkylene groups each having 2 to 4 carbon atoms, and n represents a degree of polymerization of 185 or more and 600 or less, the method comprising: a step of reacting a furandicarboxylic acid compound represented by the following formula (1): wherein X represents a hydroxyl group, an alkoxy group, or a halogen group, with a polyhydric alcohol represented by the following formula (3): B—(OH) m (3) wherein B represents linear or branched alkylene groups each having 2 to 4 carbon atoms, and m is 2 or more; and a step of conducting polycondensation to the degree of polymerization, wherein the step of reacting the furandicarboxylic acid compound represented by the formula (1) with the polyhydric alcohol represented by the formula (3) is conducted in the presence of an organometallic compound selected from the group consisting of tin, lead and titanium or a tetravalent hafnium.