| http://www.w3.org/ns/prov#value | - Another aspect is a method for preparing a polyether or intermediate therefor which comprises contacting, at a temperature in the range of about 100-250??? C., at least one alkali metal salt of a dihydroxyaromatic compound with at least one halo- or nitro-substituted aromatic compound in the presence of a catalytic amount of an alkaline hydrolysis product of said quaternary salt of the type repres
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