METHOD FOR PRODUCING POLYARYLENE SULFIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a polyarylene sulfide having a higher molecular weight at a low temperature in a short period of time by solving the problem where the conversion of a cyclic polyarylene sulfide into a polyarylene sulfide requires a high temperature and a long time and a polyarylene sulfide of high molecular weight is difficult to be produced.SOLUTION: There is provided a method for producing a polyarylene sulfide in which a cyclic polyarylene sulfide is heated under a degassing condition in the presence of a zero-valent transition metal compound.