METHOD FOR PRODUCING LIQUID CRYSTAL POLYESTER

摘要

Disclosed is a method for producing a liquid crystal polyester, which includes the following steps of: (1) melt-polycondensing a compound as a monomer in a polymerization tank to produce a prepolymer; (2) discharging the prepolymer from the polymerization tank in a molten state, and solidifying the prepolymer through cooling to produce a sheet in which a portion having a thickness of 1.6 to 2 mm accounts for 80% by mass or more (of 100% by mass of the entire sheet); (3) crushing the sheet; and (4) subjecting the crushed product to solid-phase polymerization through heating.