Process for the preparation of 1,3-propanediol

Details Process for the preparation of 1,3-propanediol Process for the preparation of 1,3-propanediol

1993-07-06

1994-11-15

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568862, 568865, C07C 3120, C07C 29141

Patent

active

053649877

ABSTRACT:
1,3-propanediol (PD) is obtained by hydration of acrolein to 3-hydroxypropionaldehyde (HPA) with subsequent catalytic hydrogenation; 3,3'-oxybis-1-propanol (OD) occurs as a yield-reducing by-product. Disclosed is a process which increases the 1,3-propanediol yield. The OD which is separated by distillation during treatment of the reaction mixture containing PD and OD is treated in aqueous solution at from 100 to 300.degree. C. with an acid solid catalyst, in particular an acid zeolite, and the reaction mixture from which the solid catalyst has been removed is returned into the treatment stage of the reaction mixture containing PD and OD.

REFERENCES:
patent: 4254290 (1981-03-01), Chambers et al.
patent: 4806658 (1989-02-01), Chang et al.
patent: 5015789 (1991-05-01), Arntz et al.
patent: 5093537 (1992-03-01), Unruh et al.
patent: 5171898 (1992-12-01), Arntz et al.

Affiliated with

Also associated with

Rating

Process for the preparation of 1,3-propanediol 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 the preparation of 1,3-propanediol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 1,3-propanediol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1098921