Process for the preparation of n-phosphonomethyl glycine

C - Chemistry – Metallurgy – 07 – F

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260/501.5

C07F 9/38 (2006.01)

Patent

CA 1155138

PROCESS FOR THE PREPARATION Of N-PHOSPHONOMETHYL GLYCINE ABSTRACT The invention is related to an improvement of the process for the preparation of N-phosphon4methyl glycine by oxydating N-phosphonomethyl imino diacetic acid with oxygen or a gas containing oxygen in the presence of a catalyst. The invention is characterized by oxydating N-phosphonomethyl imino diacetic acid in an aqueous suspension. When comparing the process of the invention with the known processes specific convertion is considerably increased and significant energy can be saved.

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