| 摘要 |
Aromatic polyethers are made by reacting i) an equimolar mixture of a bisphenol of formula <IMAGE> in which Y is a direct link, -O-, -S-, -SO2-, -CO- or a divalent hydrocarbon radical, and an aromatic dihalo compound or ii) a halophenol, in which dihalo compound or halophenol the halogen atoms are activated by ortho or para -SO2- or -CO- groups, with an alkali metal carbonate or bicarbonate. At least some of the halophenol and/or dihalo compound is fluorine containing. The amount of carbonate or bicarbonate is such that there is between 1 and 1-x/2 atoms of alkali metal per phenol group, where x is the fraction of activated halogen atoms that are fluorine.
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