发明授权
US4339549A Process for fusion bonding of fluorocarbon type polymers which comprises
counter-ion substitution prior to fusion bonding
失效
在熔融粘合之前包括反离子取代的碳氟化合物型聚合物的熔融粘合方法
- 专利标题： Process for fusion bonding of fluorocarbon type polymers which comprises counter-ion substitution prior to fusion bonding
- 专利标题（中）： 在熔融粘合之前包括反离子取代的碳氟化合物型聚合物的熔融粘合方法
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申请号： US258637申请日： 1981-04-29
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公开(公告)号： US4339549A公开(公告)日： 1982-07-13
- 发明人: Sakae Tsushima , Hiroshi Sagami
- 申请人： Sakae Tsushima , Hiroshi Sagami
- 申请人地址： JPX Osaka
- 专利权人： Asahi Kasei Kogyo Kabushiki Kaisha
- 当前专利权人： Asahi Kasei Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX55/60725 19800509
- 主分类号： B29C65/00
- IPC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 ; B32B31/16
摘要：
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 their 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.
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