Condensation polymers containing fluorine. I. Synthesis of linear polyesters from fluorine‐containing diols

Methods of synthesizing linear polyesters from fluorine‐containing diols have been investigated. The most suitable method consists of reacting the fluorine‐containing diols with dicarboxylic acid chlorides. Number‐average molecular weights in excess of 15,000 have been obtained. The polymers are rubberlike gums or waxy solids, depending on the reactants used. Increasing amounts of fluorine, contained either in a pendent group or on the backbone chain of the polymers, decreases their solubilities in common solvents, and raises their brittle temperatures.