| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for efficiently producing an industrially useful cyclic polyarylene sulfide by an economical and simple process in a short time. <P>SOLUTION: The method for producing a cyclic polyarylene sulfide comprises heating and reacting a reaction mixture which is composed of at least (a) a linear polyarylene sulfide, (b) a sulfidizing agent, (c) a dihalogenated aromatic compound and (d) an organic polar solvent, wherein ≥1.25 liters of the organic polar solvent is used per 1 mole of the sulfur content in the reaction mixture. <P>COPYRIGHT: (C)2010,JPO&INPIT |
