Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2006-04-05
2009-12-22
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C106S010000, C106S012000, C106S013000, C204S157990, C204S158110, C528S198000, C568S842000
Reexamination Certificate
active
07635744
ABSTRACT:
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 ((CF2CFO(R1)p)nArX2whereinAr 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, NR2aR2b, F or Br;p is 0 or 1;n is 1, 2 or 3;R1is substituted or unsubstituted phenyl andR2aand R2bare independently H, C1-C8alkyl or C1-C8perfluoroalkyl.
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Brunelle Daniel Joseph
Erben Christoph Georg
Harmon Marianne Elisabeth
Hung Joyce
Liu Hongwei
Boykin Terressa M
General Electric Company
Gioeni Mary Louise
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