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Application filed by Monsanto CofiledCriticalMonsanto Co
Publication of MX9709885ApublicationCriticalpatent/MX9709885A/en
Publication of MXPA97009885ApublicationCriticalpatent/MXPA97009885A/en
Agricultural Chemicals And Associated Chemicals
(AREA)
Abstract
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.percent 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.
MXPA/A/1997/009885A1995-06-071996-03-05Preparation of ammonium glifosate using aqueous ammonium hydroxide in a liquid-sol dereaccion system
MXPA97009885A
(en)