Synonyms: 4,4’-sulfonylbis-phenopolymerwith;Phenol,4,4’-sulfonylbis-,polymerwith1,1’-sulfonylbis[4-chlorobenzene];Poly(oxy-1,4-phenylenesulfonyl-1,4-phenylene)-.alpha.-hydro-.omega.-hydroxy;POLY(ETHER SULFONE);POLY(1,4-PHENYLENE ETHER-SULFONE);POLY(OXY-1,4-PHENYLENESULFONYL-1,4-PHENYLENE);POLY(P-PHENYLENE ETHER-SULFONE);POLY(P-PHENYLENE ETHER-SULPHONE)