PRODUCTION OF POLY(ARYLENE SULFIDE SULFONE)

摘要

An improved process for producing poly(arylene sulfide sulfone) of increased molecular weight is provided. The process employs an Li salt of C1 - C20 carboxylic acid as a polymerization auxiliary and is carried out in an organic amide solvent by reacting a dihalogenated aromatic sulfone with an alkali metal sulfide in the presence of 10 - 15 moles of water per mole of the alkali metal sulfide at temperatures within the range of from 160.degree.C to 230.degree.C.