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Bromine, chlorine or iodine functional polymer electrolytes crosslinked by e-beam

  • US 7,265,162 B2
  • Filed: 11/13/2003
  • Issued: 09/04/2007
  • Est. Priority Date: 11/13/2003
  • Status: Expired due to Fees
First Claim
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1. A method of making a crosslinked polymer comprising the steps of:

  • a) providing a highly fluorinated fluoropolymer comprising;

    a backbone derived in part from tetrafluoroethylene monomer, first pendent groups which include a group according to the formula —

    SO2X, where X is F, Cl, Br, OH or O-M+, where M+ is a monovalent cation, and second pendent groups which include Br; and

    b) exposing said fluoropolymer to electron beam radiation so as to result in the formation of crosslinks.

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