公开(公告)号：DE4223363A1

公开(公告)日：1993-02-04

申请号：DE4223363

申请日：1992-07-16

Applicant: BASF AG

Inventor： THOME ALFRED DR ,  ROEPER MICHAEL DR ,  STEEGMUELLER FRANZ-JOSEF

IPC: C07C29/80

Abstract: Distillative work-up of telomer mixts. (I) from the transition metal complex-catalysed telomerisation of 1,3-butadiene with water is effected by passing the mixt. (I) through the distn. appts. against a countercurrent of water vapour. In more detail, an inert gas is also passed through the appts., and distn. is pref. carried out at below 200 mbar in a thin-film evaporator; the condensate is sepd. into organic and aq. phases, then the aq. phase is superheated and the superheated vapour is recycled through the appts. as a countercurrent to (I); the bottom prod. from distn. is returned to the telomerisation reactor. USE/ADVANTAGE - Provides an economical process for working up mixts. (I), esp. to separate the octadienols obd. by telomerisation of butadiene with water in the presence of Pd/phosphine complex catalysts; passing steam through the distn. appts. as above results in a marked improvement in the efficiency of sep., together with a higher throughput under relatively mild conditions and minimal prodn. of high-boiling ethers, without reducing the activity of the catalyst.