The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2021
Filed:
Jun. 30, 2016
Monsanto Technology Llc, St. Louis, MO (US);
David R. Eaton, St. Louis, MO (US);
Walter K. Gavlick, Chesterfield, MO (US);
Eric A. Haupfear, St. Charles, MO (US);
Monsanto Technology LLC, St. Louis, MO (US);
Abstract
This invention relates to the preparation of N-(phosphonomethyl)glycine ('glyphosate') from N-(phosphonomethyl)iminodiacetic acid ('PMIDA'), and more particularly to methods for control of the conversion of PMIDA, for the identification of reaction end points relating to PMIDA conversion and the preparation of glyphosate products having controlled PMIDA content. One such method involves obtaining a series of Fourier transform infrared (“FTIR”) analyses of the PMIDA content of the aqueous reaction medium or a sample thereof during the course of the reaction. From a plurality of FTIR analyses, a projection is made of the batch reaction time or continuous oxidation residence time within the oxidation reaction zone at which a target conversion or end point may be anticipated to be attained or is attained.