Monsanto Technology LLC

Mark D Scaia

David R Eaton

Eric A Haupfear

James P Coleman

David Z Becher

Peter E Rogers

Eduardo Aurelio Casanova

Lowell R Smith

Stephen D Prosch

Donald D Soleta

Walter K Gavlick

Robert E Byrd

Leonard Aynardi

Roger J Hoekstra

Bart Roose

Alfredo Oba

Carl Mumford

Oliver Lerch

John Wagenknecht

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.

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

This invention generally relates to processes for recovering solubilized noble metals from aqueous process streams, in particular, aqueous process streams generated in the preparation of an N-(phosphonomethyl)glycine product, for example, by noble metal-catalyzed oxidation of an N-(phosphonomethyl)iminodiacetic acid substrate. The process includes contacting the aqueous process stream with a noble metal adsorption media such as an ion exchange resin to remove solubilized noble metal from the process stream.

Recovery of noble metals from aqueous process streams

Growing community of inventors

St. Louis, MO, United States of America

Mark D Scaia