Patent · US Active

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

US7771494B2 · kind B2 · utility

2Cited by

12References

29Claims

0Family size

Assignee

Monsanto Technology LLC · US

Inventors

Sunder Rangachari · Ballwin, US
Ed Ries · Kirkwood, US
Eduardo A. Casanova · Chesterfield, US
Randall Alberts · LaPlace, US
Todd Friedman · Imperial, US
Greg Hartmann · Kirkwood, US

Key dates

Filing date	Jan 31, 2007
Grant date	Aug 10, 2010
Priority date	—
Expiry date	Jun 29, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/3813
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.