Method of purification of the oxalic acid diamide

Details Method of purification of the oxalic acid diamide Method of purification of the oxalic acid diamide

1989-10-24

1991-11-26

Elmore, Carolyn

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

Organic compounds

Amino nitrogen containing

564125, C07B 6300, C07C10314

Patent

active

050684299

ABSTRACT:
A method of removing copper from oxamide obtained through a process which involves the use of copper catalysts, by contacting it with an aqueous solution of a suitable complexing agent, which is capable of forming copper-containing water-soluble complexes and imparts to the aqueous solution a pH comprised between 2 and 8, optionally repeating the contacting step and, finally, recovering the purified oxamide by solid-liquid separation techniques.
The claimed process affords oxamide containing less than 25 ppm of copper.

REFERENCES:
patent: 3776957 (1973-12-01), Newkirk
patent: 3989753 (1976-11-01), Riemenschneider et al.

Affiliated with

Also associated with

Rating

Method of purification of the oxalic acid diamide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of purification of the oxalic acid diamide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of purification of the oxalic acid diamide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2387008