A variety of fluorine-containing polymers have been used as gas-permeable membranes, contact lenses, optical fiber sheathing materials, photoresistors, or biomedical materials.'They display the characteristic virtues of water and oil repellency, low surface energy, high affmity for oxygen, high chemical and light resistance, and bioinactivity. Fluorinated difunctional monomers like polyfluorinated a, o-dicarboxylic acids and a, o- ...
