Techniques for the preparation of highly fluorinated polyethers
A process for preparing a fluorinated poly(arylene ether) comprising the repeating unit:wherein n provides a molecular weight up to about 30,000 to 100,000, X represents one of following groups: none, ketone, sulfone, sulfide, ether, hexafluoroisopropylidene, αω-perfluoroalkylene, oxadiazole, and Y is 4,4′-(hexafluoroisopropylidene)-diphenyl, 4,4′-isopropylidene diphenyl, 3,3′-isopropylidene diphenyl, phenyl, or chlorinated phenol which process comprises reacting a bis(pentafluorophenyl) compound and a bisphenol or hydroquinone in the presence of a dehydrating agent and a polar aprotic solvent is disclosed. Polymers resulting from the process show good promise as new passive optic polymer waveguide materials.
National Research Council of Canada
C C C C C C C C C C C
C08G C08L C08G C08G C08G C08G C08G C08G C08G C08G C08G
additional additional additional inventional additional inventional inventional inventional inventional inventional additional
Pascal Jianfu Mei Mike Ming Futian
Vuillaume Ding Li Day Zhou Liu