Process for preparing diacetoxybutene

Details Process for preparing diacetoxybutene Process for preparing diacetoxybutene

1994-05-18

1995-07-04

Manoharan, Virginia

Distillation: processes, separatory

Plural distillations performed on same material

One a filming distillation

203 73, 203 78, 203 80, 560244, B01D 310, C07C 6902

Patent

active

054297214

ABSTRACT:
A process for preparing diacetoxybutene, including:
reacting butadiene, acetic acid and oxygen in the presence of a palladium-based catalyst;
feeding continuously the resulting reaction product into a first distillation tower;
feeding continuously a withdrawn bottoms withdrawn from the first distillation tower into a second distillation tower;
withdrawing bottoms containing high boiling point materials from the bottom of the second distillation tower, so that the content of the high boiling point materials in the bottoms of the second distillation tower is not more than 20 wt %;
feeding continuously the withdrawn bottoms into a thin-film evaporator whose internal pressure is kept lower than the bottom pressure of the second distillation tower to carry out evaporation treatment; and
recycling the evaporated materials mainly containing diacetoxybutene into the second distillation tower.

REFERENCES:
patent: 4057472 (1977-11-01), Toriya et al.
patent: 4150239 (1979-04-01), Tanabe et al.
patent: 4225729 (1980-09-01), Toriya et al.
patent: 4228301 (1980-10-01), Yoshida et al.
patent: 4236024 (1980-11-01), Matsuda et al.
patent: 5177254 (1993-01-01), Haji et al.

Affiliated with

Also associated with

Rating

Process for preparing diacetoxybutene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing diacetoxybutene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing diacetoxybutene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-758006