Process for the production of polyarylene sulfides.

摘要

Polyarylene sulfides are produced by polymerizing a dihalogen aromatic compound with an alkali metal hydrosulfide in the presence of a lithium halide in an organic polar solvent. In this polymerization, an alkali metal hydroxide and/or carbonate is added and a branching agent such as a trihalogen aromatic compound or a halogen aromatic nitro compound is used, if desired. The polyarylene sulfides have a high molecular weight and a less salt contents and a high degree of whiteness.