Production of poly(arylene sulfide sulfone)

Details Production of poly(arylene sulfide sulfone) Production of poly(arylene sulfide sulfone)

C - Chemistry, Metallurgy

08

G

402/320

C08G 75/02 (2006.01) C08G 75/20 (2006.01)

Patent

CA 1339178

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°C to 230°C.

603531

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