发明名称 |
Process of producing a composite membrane |
摘要 |
In a sulphonated aromatic polymer contains repeating units (Ar-Y) (where Y is SO2 and/or CO), at least half of groups Ar contain a group SO3 M and M is 1/m of a polyvalent metal cation in at least 80% of such groups SO3 M. The polyvalent cation compound is formed by heating the corresponding sulphonic acid or monovalent cation compound with a salt of a polyvalent metal. The polymer is useful as a membrane and the polyvalent metal salt addition and/or the heat treatment may be applied to polymer in membrane form. |
申请公布号 |
US4939180(A) |
申请公布日期 |
1990.07.03 |
申请号 |
US19890384838 |
申请日期 |
1989.07.25 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
HENDY, BRIAN N. |
分类号 |
C08G75/20;B01D67/00;B01D71/52;B01D71/68;C08G65/48;C08G67/00;C08G75/00;C08G75/23;C08J5/22 |
主分类号 |
C08G75/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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