Control of N-(phosphonomethyl)iminodiacetic acid conversion in manufacture of glyphosate

US7799571B2 · kind B2 · utility

Assignee

• Monsanto Technology LLC · US

Inventors

• Donald D. Soleta · Chesterfield, US
• David R. Eaton · Kirkwood, US
• Peter E. Rogers · Des Peres, US
• Eduardo A. Casanova · Chesterfield, US
• John H. Wagenknecht · Kirkwood, US
• Leonard Aynardi · Chesterfield, US
• David Z. Becher · Chesterfield, US
• Robert E. Byrd · Columbia, US
• James P. Coleman · Maryland Heights, US
• Walter K. Gavlick · Chesterfield, US
• Eric A. Haupfear · Holden, US
• Oliver Lerch · Eureka, US
• Carl Mumford · Tuscola, US
• Alfredo Oba · São José dos Campos, BR
• Stephen D. Prosch · Ballwin, US
• Bart Roose · Merelbeke, BE
• Mark D. Scaia · Chesterfield, US
• Lowell R. Smith · Kirkwood, US

Key dates

• Filing date: Apr 3, 2006
• Grant date: Sep 21, 2010
• Expiry date: Apr 3, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/209163
• WIPO field: Measurement
• WIPO sector: Instruments

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.