发明名称 |
PREPARATION OF AMMONIUM GLYPHOSATE USING AQUEOUS AMMONIUM HYDROXIDE IN A SOLID REACTION SYSTEM |
摘要 |
Solid N-phosphonomethylglycine or glyphosate acid is charged to a substantially closed system and then partially pre-dried as by continuously recirculating it through a hot air grinding/drying system. A cooled solution of ammonium hydroxide is then metered into and reacted with the partially dried glyphosate acid as it is being recirculated in a manner such that the moisture content of the reaction mass so formed is continuously decreased throughout the reaction. Following completion of the ammonium hydroxide addition, a powdered reaction mass/product having a moisture content of about 2 wt.% is formed. Significantly, at this stage, the ammonium glyphosate product is suitable for end use and it can be readily dissolved in water and immediately used as a herbicide or plant growth regulator. More importantly, however, this product is capable due to its highly sorptive character to be further formulated into a product exceptionally highly loaded with adjuvants and particularly surfactants.
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申请公布号 |
CA2221298(A1) |
申请公布日期 |
1996.12.19 |
申请号 |
CA19962221298 |
申请日期 |
1996.03.05 |
申请人 |
MONSANTO COMPANY;MONSANTO COMPANY |
发明人 |
LINDEMANN, RALPH E., JR.;DAY, THOMAS M.;KRAMER, RICHARD M.;GILLESPIE, JANE L. |
分类号 |
A01N57/20;C07F9/38;(IPC1-7):C07F9/38 |
主分类号 |
A01N57/20 |
代理机构 |
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地址 |
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