| abstract |
2,4-xylenol can be obtained with a high yield and high purity in the purification of a crude 2,4-xylenol isomer mixture containing 2,5-xylenol by reacting only 2,5-xylenol with an aldehyde in the presence of an aromatic sulfonic acid, converting 2,5-xylenol into a xylenol-aldehyde condensate and, subsequently, separating the same from 2,4-xylenol. |