Centre National De La Recherche Scientifique

E.i. Dupont De Nemours and Company

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Université Montpellier 2 Sciences Et Techniques

Ecole Nationale Superieure De Chimie De Montpellier

Aurelien Soules

Bernard Boutevin

Bruno Ameduri

Ming-Hong Hung

Pierrick Buvat

Jannick Bigarre

Renaud Perrin

The invention relates to a polymer comprising at least one polymeric chain of a first type, the said chain comprising at least two blocks, the same or different, the said blocks comprising repeat units derived from the polymerisation of styrene monomers, the said units comprising at least one phenyl pendant group carrying at least one &#x2014;SOR group, R possibly being a hydrogen atom, an alkyl group or cationic counter-ion, the said two blocks being separated by a spacer group, the spacer group is a perfluorocarbon group.

Sulfonated polymers useful for forming fuel cell membranes

Fluorinated copolymers are prepared via copolycondensation polymerization in a process comprising reacting A) a telechelic fluoroazido compound of formula N(Y)&#x2014;(CH)&#x2014;R&#x2014;(CH)&#x2014;(Y)N, wherein Y is SO, SO, CH, or CO, p=0 or 1, n and m are independently 1 to 4, and R is selected from the group consisting of i) a C-Cfluoroalkylene group, ii) a C-Cfluoroalkoxylene group, iii) a substituted aryl group, iv) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), v) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, vi) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and vii) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin with B) a telechelic diyne or dinitrile compound in the presence of copper halide catalyst.

Copolycondensation polymerization of fluoropolymers

Growing community of inventors

Capestang, France

Aurelien Soules