发明名称 |
CATION EXCHANGE FLUOROPOLYMER MEMBRANE |
摘要 |
<p>A cation exchange fluoropolymer membrane comprising at least three integrally laminated layers including a main layer made of a perfluorocarbon polymer having carboxylic acid groups as its ion exchange groups with an ion exchange capacity of from 1.4 to 2.0 meg/g dry resin and having a thickness of from 50 to 250 .mu.m, a sulfonic acid film surface layer formed on one side of said main layer, made of a perfluorocarbon polymer having sulfonic acid groups as its ion exchange groups with an ion exchange capacity of from 0.5 to 1.5 meg/g dry resin and having a thickness of from 5 to 50 m, and a carboxylic acid film surface layer formed on the other side of said main layer, made of a perfluorocarbon polymer having carboxylic acid groups as its ion exchange groups with an ion exchange capacity of from 0.5 to 1.3 meg/g dry resin and having a thickness of from 5 to 50 .mu.m, said sulfonic acid film surface layer and carboxylic acid film surface layer constituting the outer-most layers, respectively.</p> |
申请公布号 |
CA1265472(A) |
申请公布日期 |
1990.02.06 |
申请号 |
CA19850481675 |
申请日期 |
1985.05.16 |
申请人 |
ASAHI GLASS COMPANY LTD. |
发明人 |
MIYAKE, HARUHISA;ITO, HIROAKI;SUZUKI, KOJI;YAMADA, RYOJI |
分类号 |
C25B13/08;C08J5/22;C25B1/46;(IPC1-7):C25B13/08;C25C7/04 |
主分类号 |
C25B13/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|