POLYMERS, CONTAINING A FLUOROCYCLOBUTYL RING AND THEIR PREPARATION

摘要

This invention concerns terminally unsaturated olefins of formula (III) wherein R is oxygen or an alkylene or alkylene ether group wherein one or more of the hydrogens may be substituted by halogen, and Rf is a radical of formula (II), wherein R'f, is a bond or is a fluoroalkylene or fluoroalkylene ether group, when m = 0 then y is F and when m = 1 then Y is O, Z is a univalent metal. The invention further concerns a process of polymerisation of these olefins and the polymers formed, as well as the use of the polymers in which m = 1 and Z = hydrogen or an alkali metal in an ionically conductive composition, particularly for use in an electrochemical cell.