"ent aromatic residue, Q is an oxygen or sulfur atom, and X is a halogen atom.U.S. Pat. No. 4,331,798 of Staniland issued May 25, 1982 teaches production of aromatic polyethers by reacting (a) a mixture of a bisphenol and a dihalobenzenoid compound or (b) a halophenol, in which dihalobenzenoid compound or halophenolhalogen atoms are activated by ortho or para --SO.sub.2 -- or --CO-- groups, with an" . . . .