Polychlorotrifluoroethylene is a linear straight-chain polymeric material with the chemical structure (Cl -C F — F C- F)n. It is well known that this material can be crystallized and that the melting point of the crystals is close to 215°C(1,2). Above this temperature, the polymer is in the liquid or “rubbery” state. On quenching the material very rapidly from the liquid state, crystallization can be largely prevented, and the system is then for the most part in the supercooled liquid, or at lower temperatures, in the glassy state.