发明名称 |
Improved process for fusion bonding of fluorocarbon type polymers. |
摘要 |
<p>A fluorinated polymer having pendant cation exchange groups selected from sulfonic acid, carboxylic acid or sulfonamide groups, or their salts is modified with a sulfonium compound and, or a phosphonium compound for substitution of the counter-ions of the cation exchange groups with sulfonium ions and or phosphonium ions. The polymers treated in this manner are improved in melt-flow characteristic to make fusion bonding between these polymers possible. The process is particularly suitable for repairing damaged cation exchange membranes for use in chlor-alkali electrolytic cells to advantageously elongate the life of the membranes.</p> |
申请公布号 |
EP0039897(A1) |
申请公布日期 |
1981.11.18 |
申请号 |
EP19810103436 |
申请日期 |
1981.05.06 |
申请人 |
ASAHI KASEI KOGYO KABUSHIKI KAISHA |
发明人 |
TSUSHIMA, SAKAE;SAGAMI, HIROSHI |
分类号 |
B29C65/00;B01J47/12;B29C53/00;B29C65/08;B29K27/12;C08F214/18;C08J5/22;C08J9/00;C09J5/02;C25B1/46;C25B9/10;C25B13/08;(IPC1-7):08J5/22;25B13/08;25B1/46;01D13/04 |
主分类号 |
B29C65/00 |
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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