Process for preparing poly(arylene sulfide sulfone) with controlled ratio of alkali metal carboxylate to sulfur source

摘要

A process for preparing poly(arylene sulfide sulfone) by contacting a dihaloaromatic sulfone, an organic amide, a sulfur- containing compound, water, and an alkali metal carboxylate, wherein the molar ratio of the alkali metal carboxylate to the sulfur-containing compound is about 0. 002:1 to less than 0.05:1.