| 摘要 |
Sulphonated polyarylethers or thioethers are formed by polycondensing difunctional monomers having phenolic and/or thiophenolic and/or halogenic end groups in the presence of a dipolar aprotic solvent, at least to one or which monomers a sulphonic acid or a sulphonate salt is attached. The monomer(s) which the sulphonate group is attached is selected from monomers of formula I:- X-Phn-Y I wherein:- Ph is phenylene; X and Y are independently -OH or -SH; and n is an integer selected from 1 to 3.
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