| 摘要 |
A method of making a polyether polymer comprises reacting a salt of a dihydroxy-substituted aromatic hydrocarbon with a substituted aromatic compound of formula (I) <?in-line-formulae description="In-line Formulae" end="lead"?>Z(A<SUP>1</SUP>-X<SUP>1</SUP>)<SUB>2 </SUB> (I) <?in-line-formulae description="In-line Formulae" end="tail"?> in the presence of a catalyst to form an intermediate polymer having endgroups, wherein the molar ratio of the salt of a dihydroxy-substituted aromatic hydrocarbon to the substituted aromatic compound is less than 1, Z is an activating radical, A<SUP>1 </SUP>is an aromatic radical and X<SUP>1 </SUP>is fluoro, chloro, bromo or nitro; determining the additional amount of the salt of a dihydroxy-substituted aromatic hydrocarbon needed to form a final polyether polymer with a predetermined molecular weight and adding the additional amount of the salt of a dihydroxy-substituted aromatic hydrocarbon to the intermediate polymer.
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