| 摘要 |
A fluorine-containing high polymer, e.g. polytetrafluoroethylene, can easily and efficiently be converted into a wax-like lower molecular weight polymer by contact reaction of the high polymer with a gas comprising a fluorinating agent, which is selected from molecular fluorine, nitrogen-fluorine compounds represented by NF3, halogen fluorides represented by ClF3 and fluorides of rare gas elements represented by XeF2, at a temperature in the range from 250 DEG to 550 DEG C. |
