Hydrogen-containing flourosurfacant and its use in polymerizatio

Details Hydrogen-containing flourosurfacant and its use in polymerizatio Hydrogen-containing flourosurfacant and its use in polymerizatio

1997-07-01

1998-06-09

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

560184, 560227, 562586, 562605, 568842, 570137, C08F 200, C07C 6963

Patent

active

057635528

ABSTRACT:
A partially-fluorinated surfactant having internal methylene groups and having the formula R.sub.f --(CH.sub.2).sub.m --R'.sub.f --COOM wherein m is 1-3, R.sub.f is perfluoroalkyl or perfluoroalkoxy, containing 3-8 carbon atoms, R'.sub.f is linear or branched perfluoroalkylene containing 1-4 carbon atoms, and M is NH.sub.4, Li, Na, K, or H is useful in polymerization of fluorinated monomers. High molecular weight can be achieved in homopolymerization of tetrafluoroethylene.

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In-house computer abstract pp. 17-19; Answer 11 of 17 Ohsaka et al, JP 83-251 069 -83 1226.

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