Process for manufacturing polyarylene sulfide.

摘要

A process for efficiently manufacturing high purity polyarylene sulfide. The process comprises feeding a liquid or gaseous sulfur compound (e.g. hydrogen sulfide) to a mixture comprising lithium hydroxide and a non-lithium hydroxide solid compound (e.g. alkali metal chloride or alkaline earth metal chloride) in a non-protonic organic solvent (e.g. N-methyl-2-pyrrolidone), separating the alkali metal chloride or alkaline earth metal chloride, adjusting the sulfur content of the reaction mixture, feeding a dihalogeno aromatic compound (e.g. p-dichlorobenzene) to effect a polycondensation reaction, and adding of an alkali metal hydroxide (e.g. sodium hydroxide) to recover lithium ion. <IMAGE>