Monsanto Technology LLC

William B Hooper

Eduardo Aurelio Casanova

Eric A Haupfear

Henry H Chien

Juan Pedro Arhancet

Jerald D Heise

Michael Rogers

Mark A Leiber

William A Scholle

Amy L Jorgenson

Karen A Wittler, Legal Representative

This invention generally relates to liquid phase oxidation processes for making N-(phosphonomethyl)glycine (also known in the agricultural chemical industry as glyphosate) and related compounds. This invention, for example, particularly relates to processes wherein an N-(phosphonomethyl)iminodiacetic acid (NPMIDA) substrate (i.e., N-(phosphonomethyl)iminodiacetic acid, a salt of N-(phosphonomethyl)iminodiacetic acid, or an ester of N-(phosphonomethyl)iminodiacetic acid) is continuously oxidized to form an N-(phosphonomethyl)glycine product (i.e., N-(phosphonomethyl)glycine, a salt of N-(phosphonomethyl)glycine, or an ester of N-(phosphonomethyl)glycine). This invention also, for example, particularly relates to processes wherein an N-(phosphonomethyl)iminodiacetic acid substrate is oxidized to form an N-(phosphonomethyl)glycine product, which, in turn, is crystallized (at least in part) in an adiabatic crystallizer.

Reaction systems for making N-(phosphonomethyl) glycine compounds

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St. Louis, MO, United States of America

William B Hooper