发明名称 |
PROCESS FOR STABILIZING FLUOROPOLYMER HAVING ION EXCHANGE GROUPS |
摘要 |
The invention pertains to a process for stabilizing a semi-crystalline fluoropolymer comprising ion exchange groups, said process comprising:
- suspending at least one semi-crystalline fluoropolymer having ion exchange groups [polymer (I)] in at least one fluorinated organic dispersing medium [medium (M)] so as to obtain a dispersion (D) of polymer (I) in a dispersing medium (M);
- contacting said dispersion (D) with fluorine under irradiation with U.V. radiation so as to obtain a stabilized polymer. Still objects of the invention are a stable semi-crystalline fluoropolymer as above defined having a low amount of unstable ends groups of -COF type, the use of the stabilized fluoropolymer obtained by the process or of the stable fluoropolymer in fuel cells devices, a membrane and a membrane-electrode assembly comprising said fluoropolymers. |
申请公布号 |
EP2076553(A1) |
申请公布日期 |
2009.07.08 |
申请号 |
EP20070821353 |
申请日期 |
2007.10.16 |
申请人 |
SOLVAY SOLEXIS S.P.A. |
发明人 |
ARCELLA, VINCENZO;CIRILLO, LUCA;GHIELMI, ALESSANDRO;MERLO, LUCA;MILLEFANTI, STEFANO |
分类号 |
C08F8/22;C08F14/18;C08J5/22 |
主分类号 |
C08F8/22 |
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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