| Abstract: | Chlorinated poly(vinylidene fluoride) (PVF2) was prepared by introducing chlorine gas into a CCI4 suspension of PVF2 at reflux temperature. Polymer crystallinity and softening point decrease, while solubility and adhesion increase with the degree of chlorination. In contrast to PVF2, the chlorinated polymer is soluble in low-boiling common organic solvents, such as acetone, methyl ethyl ketone, and 1,2-dimethoxyethane. Chlorinated PVF2 is resistant to dehydrochlorination and is thermally more stable than PVF, chlorinated PVF, PVC, or chlorinated PVC. Chlorinated PVF2 coatings on wood, prepared by solution casting at room temperature, show outstanding weathering resistance. |
