LOW-COLOR POLY(BIPHENYL ETHER SULFONE) AND PROCESS FOR THE PREPARATION THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a low-color poly(biphenyl ether sulfone).

SOLUTION: An alkali metal carbonate is brought into contact with a substantially equimolar amounts of at least one bishydroxy biphenyl compound and at least one dihalodiarylsulfone under the presence of a polar aprotic solvent in a polymerization reaction mixture. The alkali metal carbonate is a solid particulate anhydrous potassium carbonate, having an average particle size of less than about 100 microns.

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