Such polysulfones are included within the class of polyarylene polyether resins described in U.S. Pat. 3,264,536, Robinson et al., Aug. 2, 1966, the disclosure of which is hereby incorporated herein by reference for the purpose of describing and exemplifying E and E' in more detail, including the preferred forms of E deriived from dinuclear phenols having the structure: Hoort-Ra r oH as defined th