A process for preparing polyarylene sulfides.

摘要

Polyarylene sulfides are prepared by reacting a dihalogen aromatic compound with a sodium hydrosulfide in the presence of an alkali metal aminoalkanoate and a lithium halide in an organic polar solvent. This process can prevent a decomposition of the sodium hydrosulfide during dehydration and produce the polyarylene sulfides in a granular form in high yields and with high efficiency. The polyarylene sulfides obtainable by this process are high in molecular weight and degree of whiteness and low in a content of salts remaining therein. Furthermore, the polyarylene sulfides are in the granular form so that they can be handled with ease because of their readily separability and washability.