Reactive monomers containing the trifluorovinyloxy group may be copolymerized to form polymers useful as membranes, especially polymer electrolyte membranes for fuel cells. The monomers have the formula ((CF
2
CFO(R
1
)
p
)
n
ArX
2
wherein Ar is a trivalent, tetravalent or pentavalent, substituted or unsubstituted, aromatic or heteroaromatic, monocyclic or polycyclic group having from 5 to 50 carbon atoms;
X is OH, SH, NR
2a
R
2b
, F or Br; p is 0 or 1; n is 1, 2 or 3;
R
1
is substituted or unsubstituted phenyl and
R
2a
and R
2b
are independently H, C
1
-C
8
alkyl or C
1
-C
8
perfluoroalkyl.
US7635744B2
申请人:——
公开号:US7635744B2
公开(公告)日:2009-12-22
Barnett; Goodway; Watson, Chemische Berichte, 1933, vol. 66, p. 1876,1886