| 摘要 |
The present invention relates to a method for purifying waste organic solvents. An alkoxide-based compound is added to waste organic solvents containing propylene glycol monomethylether acetate produced in a display manufacturing process and the like and the obtained mixture is reacted, thereby recovering purified products of a high purity in a high yield through the change in the boiling points of impurities such as propionates and ketones. |
