Invention Grant
- Patent Title: Purification of n-(phosphonomethyl)glycine
- Patent Title (中): 纯化（膦酰基甲基）甘氨酸
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Application No.: US11133739Application Date: 2005-05-20
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Publication No.: US07683207B2Publication Date: 2010-03-23
- Inventor: Jimmy Jui Tai , Herbert Nathan Praay , James William Ringer , Mark Victor Michael Emonds
- Applicant: Jimmy Jui Tai , Herbert Nathan Praay , James William Ringer , Mark Victor Michael Emonds
- Applicant Address: US IN Indianapolis
- Assignee: Dow AgroSciences LLC
- Current Assignee: Dow AgroSciences LLC
- Current Assignee Address: US IN Indianapolis
- Agent Craig E. Mixan
- Main IPC: C07F9/22
- IPC: C07F9/22
Abstract:
The present invention is a process for the purification of glyphosate (PMG) comprising: 1) dissolving or suspending a material comprising PMG in water, in the presence of a base, to produce a composition comprising a PMG salt in an aqueous base, 2) contacting the composition with an acid, such that the PMG salt is neutralized, forming a precipitate of PMG, and 3) isolating the precipitate of PMG, with the proviso that the composition of step 1) is not concentrated or filtered using a nanofiltration membrane.
Public/Granted literature
- US20060264655A1 Purification of N-(phosphonomethyl)glycine Public/Granted day:2006-11-23
Information query
