发明名称 |
Hydrogen-containing fluorosurfactant and its use in polymerisation |
摘要 |
<p>A partially-fluorinated surfactant having internal methylene groups and having the formula Rf-(CH2)m-R'f-COOM wherein m is 1-3, Rf is perfluoroalkyl or perfluoroalkoxy, containing 3-8 carbon atoms, R'f is linear or branched perfluoroalkylene containing 1-4 carbon atoms, and M is NH4, Li, Na, K, or H is useful in polymerization of fluorinated monomers. High molecular weight can be achieved in homopolymerization of tetrafluoroethylene.</p> |
申请公布号 |
EP0822175(A2) |
申请公布日期 |
1998.02.04 |
申请号 |
EP19970112791 |
申请日期 |
1997.07.25 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
FREIRING, ANDREW E.;HUNG, MING-HONG;RODRIGUEZ-PARADA, JOSE M.;ZIPPEL, ROGER J. |
分类号 |
C07C17/269;C07C31/38;C07C53/21;C07C69/63;C08F2/00;(IPC1-7):C07C53/21;C08F214/18;C07C59/135 |
主分类号 |
C07C17/269 |
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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