Liquid epoxy resin composition useful for making polymers

A method of making an aromatic polyether polymer comprising:

• providing a liquid epoxy resin composition that is prepared by reacting reactants including one or more epihalohydrins and one or more ortho-substituted diphenol compounds, wherein the liquid epoxy resin composition comprises diepoxide resins, optional mono-epoxide compounds, and optional unreacted ortho-substituted diphenol compounds;
• each optional mono-epoxide compound comprising a base structural unit derived from an ortho-substituted diphenol compound of said one or more ortho-substituted diphenol compounds;
• each diepoxide resin comprising a base structural unit derived from an ortho-substituted diphenol compound of said one or more ortho-substituted diphenol compounds and an “n” number of additional structural units derived from said ortho-substituted diphenol compound;
• and wherein the liquid epoxy resin composition comprises more than 60 and less than 80 weight percent of n=0 diepoxide resins, based on the total weight of said diepoxide resins, any mono-epoxide compounds, and any unreacted ortho-substituted diphenol compounds;
• and wherein the liquid epoxy resin composition is a liquid at 20° C. and atmospheric pressure;
• and
• reacting the liquid epoxy resin composition with one or more extender compounds to yield an aromatic polyether polymer having a number average molecular weight of at least 2,000;
• wherein the aromatic polyether polymer is substantially free of bisphenol A, epoxides of bisphenol A, bisphenol F, epoxides of bisphenol F, bisphenol S, and epoxides of bisphenol S.