| 摘要 |
<p>PURPOSE: To provide a method for purifying a fluororesin, capable of obtaining the fluororesin having a high purity, and further to provide a device therefor. CONSTITUTION: A device for purifying a fluororesin has a heater for heating the fluororesin in an inert gas atmosphere containing hydrogen gas to vaporize the fluororesin, and a condenser for cooling the vaporized fluororesin to condense the fluororesin. The fluororesin is thermally vaporized in a nitrogen atmosphere containing hydrogen gas, and the vaporized fluororesin is subsequently cooled to be condense and recovered. The fluororesin can be recovered from fluororesin wastes, and metal impurities are removed from the recovered fluororesin.</p> |
