Patent · US Expired

Method for producing N-phosphonomethylglycine

US7071354B2 · kind B2 · utility

1Cited by

3References

13Claims

0Family size

Assignee

BASF SE

Inventors

Hugues Vandenmersch · Monsheim, DE
Hartwig Voss · Bischofswerda, DE
Stefan Orsten · Ellerstadt, DE
Christian Wulff · Mannheim, DE

Key dates

Filing date	Jun 21, 2002
Grant date	Jul 4, 2006
Priority date	—
Expiry date	Jul 3, 2022

Classification

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

Abstract

The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.

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