Monsanto Technology LLC

Sunder Rangachari

John W Hemminghaus

Todd Charles Friedman

Greg Hartmann

David Z Becher

Eduardo Aurelio Casanova

Robert B Weisenfeld

Ed Ries

Randall Alberts

Sherrol Lee Baysdon

Keith A Kretzmer

The present invention generally relates to processes for producing and recovering cyclitolcarboxylic acids such as shikimic acid and quinic acid. In particular, the present invention is directed to processes for producing shikimic acid that comprise contacting glyphosate and an organism that has the common aromatic biosynthetic pathway. The present invention is also directed to recovery of the shikimic acid product from aqueous process streams utilizing membrane separation techniques.

Processes for producing and recovering shikimic acid

Processes for the preparation, concentration and recovery an N-(phosphonomethyl)glycine product from aqueous process streams including contacting mother liquor generated in the precipitation of N-(phosphonomethyl)glycine product crystals with a selective membrane to produce a retentate enriched N-(phosphonomethyl)glycine product and a permeate depleted in N-(phosphonomethyl)glycine product are disclosed.

Process for selective removal of water and impurities from N-(phosphonomethyl)glycine

Improved processes for preparing and crystallizing N-(phosphonomethyl)iminodiacetic acid are provided. The processes include adding N-(phosphonomethyl)iminodiacetic acid seed crystals to N-(phosphonomethyl)iminodiacetic acid reaction solutions. Provided are beds of crystallized N-(phosphonomethyl)iminodiacetic acid having improved permeability and filtration rate and reduced impurities.

Altering the crystal size distribution of N-(phosphonomethyl) iminodiacetic acid for improved filtration and product quality

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Ballwin, MO, United States of America

Sunder Rangachari