| 摘要 |
The method of the parent Specification is modified by subjecting the pyroligneous liquor to steam distillation, rejecting the methanol and acetone which distil over first and also the light wood oil rich in products exhibiting an aldehyde reaction which follows, and collecting the mixture of water and "smoke oils" distilling over at 100 DEG C. at atmospheric pressure, before separating these "smoke oils" by means of a solvent, deacidifying, and dissolving in water. |
