Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1992-07-28
1993-04-27
Shippen, Michael L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562450, C07C20500
Patent
active
052064328
ABSTRACT:
There is disclosed a novel process of preparing highly pure monoamido acid by the reaction of a dibasic acid and an amine wherein a large molar excess of dibasic acid is utilized and conveniently recovered for recycle in the process to prepare additional amounts of the said monoamido acid. It has been discovered that amidation of both acid groups of the dibasic acid is held to low levels while efficiency of the reaction is maintained by recycle of unreacted starting acid. The unwanted diamido compound is separated from the desired product by first forming a water soluble salt of the monoamido acid then removing it from the insoluble diamido by-product by conventional means such as filtration. The desired monoamido acid may be recovered by acidification of the salt thereby precipitating the acid for easy recovery from an aqueous medium.
REFERENCES:
patent: 2191738 (1934-09-01), Balle
patent: 2371104 (1945-03-01), Kienle et al.
patent: 2502478 (1947-02-01), Padbury et al.
patent: 2604449 (1952-07-01), Bryant et al.
patent: 4681592 (1987-07-01), Hardy et al.
patent: 4686063 (1987-08-01), Burns
patent: 5117058 (1992-05-01), Chen et al.
Loyer R. C.
Monsanto Company
Shippen Michael L.
LandOfFree
Process for preparing monoamido acids 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 monoamido acids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing monoamido acids will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2328838