| 摘要 |
PURPOSE:To obtain the titled compound containing no oligomers efficiently, by separating two specified layers in a resin solution obtained by reacting a polyhaloaromatic compound with a sulfiding agent and adding an organic acid or an inorganic acid to the reaction mixture. CONSTITUTION:A polyhaloaromatic compound (A) is reacted with 0.8-1.2mol, per mol of component A, of a sulfiding agent at 200-330 deg.C and a pressure of 1.1-200kg/cm<2> for 10min-72hr in 2.5-20mol, per mol of component A, of an organic polar solvent, and 1-300wt%, based on component A, at least one separating agent (D) selected from an organic acid and an inorganic acid is added to the reaction mixture to obtain a resin solution comprising a thick polymer layer comprising polyphenylene sulfide of an intrinsic viscosity >=0.05 and a thick oligomer layer comprising a phenylene sulfide oligomers, other oligomers and low-MW impurities, etc., and having an intrinsic viscosity <0.05. Either one of said two layers is separated from this solution.
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