Method for producing n-phosphonomethylglycine

Details Method for producing n-phosphonomethylglycine Method for producing n-phosphonomethylglycine

C - Chemistry, Metallurgy

07

F

C07F 9/38 (2006.01)

Patent

CA 2451507

The invention relates to a method for producing N-phosphonomethylglycine from an aqueous mixture containing N-phosphonomethylglycine, ammonium halogenides and alkali halides or earth alkali halides and optionally, organic impurities in a dissolved form. According to the invention, (a) the pH-value of the mixture is regulated to a value of 2 - 8, (b) the mixture is separated by means of a selective nano-filtration membrane, to obtain a retentate rich in N- phosphonomethylglycine and poor in halogenides and a permeate rich in halogenides and poor in N-phosphonomethylglycine and (c) the N- phosphonmethylglycine is prepared from the retentate. The inventive method enables the production of N-phosphonomethylglycine by simultaneously separating the halogenide salts thereof.

L'invention concerne un procédé pour la production de N-phosphonométhylglycine à partir d'un mélange aqueux qui contient de la N-phosphonométhylglycine, des halogénures d'ammonium ainsi que des halogénures alcalins ou alcalino-terreux et, éventuellement, des impuretés organiques sous forme dissoute. Selon l'invention, (a) on règle la valeur du pH du mélange à une valeur comprise entre 2 et 8, (b) on sépare le mélange au moyen d'une membrane de nanofiltration sélective, obtenant ainsi un rétentat plus riche en N-phosphonométhylglycine et plus pauvre en halogénures et un perméat plus riche en halogénures et plus pauvre en N-phosphonométhylglycine, et (c) on prépare la N-phosphonométhylglycine à partir du rétentat. Le procédé selon l'invention permet la production de N-phosphonométhylglycine avec séparation simultanée des sels d'halogénure.

Affiliated with

Also associated with

Rating

Method for producing n-phosphonomethylglycine 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 for producing n-phosphonomethylglycine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing n-phosphonomethylglycine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1617123