| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for separating a polyarylene sulfide oligomer from a mixture of a polyarylene sulfide oligomer and a filtering aid with good efficiency and in a good yield. <P>SOLUTION: A polyarylene sulfide oligomer is produced from a mixture of a polyarylene sulfide oligomer and a filtering aid by adding to the mixture containing the polyarylene sulfide oligomer and the filtering aid (a) a solvent in which the polyarylene sulfide oligomer is soluble or easily soluble and (b) a solvent in which the polyarylene sulfide oligomer is insoluble or hardly soluble and which has hydrophilicity in predetermined ratios. <P>COPYRIGHT: (C)2011,JPO&INPIT |
