公开(公告)号：JP2000219647A

公开(公告)日：2000-08-08

申请号：JP2000019094

申请日：2000-01-27

Applicant: BASF AG

Inventor： STREICHER HARALD DR ,  BURST WOLFRAM ,  JUERGEN DOIVERU ,  JUERGEN KOPPENHOEFER

IPC: C07C29/80 ,  C07C31/22

Abstract: PROBLEM TO BE SOLVED: To produce a highly pure phytantriol useful for cosmetics or the like in high yield without using a heavy metal compound by rectifying a crude phytantriol in a column including a metallic packing material under a specific condition. SOLUTION: Phytantriol obtained by reacting isophytol with performic acid, and saponifying the formed reaction product with an alkaline chemical, and contaminated with byproducts having the lower boiling point and/or the higher boiling point is rectified in a column including a metallic packing material having a regular structure under a moderate vacuum while completely blocking the air under an insulation condition by using an apparatus regulated so that (i) the distribution of a liquid may be carried out by a pass-distributor 6 having >=500 per m2 dropping points, (ii) the passes of the liquid distributor 6 may be arranged so as to form 90 deg. angle to fabric layers of packing material elements 7 and 8 just under the distributor 6, and (iii) two or more fabric layers of the packing material elements having 20-100 mm height may be arranged under the distributor so as to rotate 90 deg. angle to each other.