Separation by rectification of unsaturated carboxylic acids from

Details Separation by rectification of unsaturated carboxylic acids from Separation by rectification of unsaturated carboxylic acids from

1996-08-13

1998-03-17

Bhat, Nina

Distillation: processes, separatory

Addition of material to distilland to inhibit or prevent...

For inhibiting or preventing a polymerization reaction

203 37, 203 59, 203DIG21, B01D 300, B01D 5900

Patent

active

057282722

ABSTRACT:
In a process for the separation by rectification of unsaturated carboxylic acids from solvents in which the acids were absorbed after the synthesis reaction, the rectification is briefly interrupted and the rectification column is flushed with a basic solution. The interruption is carried out at regular time intervals. The basic solution used is an aqueous solution of alkali metal and/or alkaline earth metal hydroxide, preferably NaOH, KOH, Ca(OH).sub.2 or their anhydrous oxides; alkaline polar organic solvents as amines or amides can be used, too.

REFERENCES:
patent: 3157693 (1964-11-01), Wheeler et al.
patent: 3470238 (1969-09-01), Asano et al.
patent: 3818079 (1974-06-01), Sato et al.
patent: 3893895 (1975-07-01), Dehnert et al.

Affiliated with

Also associated with

Rating

Separation by rectification of unsaturated carboxylic acids from does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation by rectification of unsaturated carboxylic acids from, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation by rectification of unsaturated carboxylic acids from will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-954650