Ammonia → Ammonia

Participants

Reaction Steps

The present invention is further directed to a continuous process for preparing a granular herbicidal composition, comprising continuously feeding (i) particulate glyphosate acid, (ii) ammonia, (iii) adjuvant, and (iii) water to form a reaction mass in which ammonium glyphosate is formed, wherein the amount of water fed is from about 10% to about 25% by weight of all materials being fed to the reactor. The reaction of glyphosate acid and ammonia generates heat, causing the evaporation of water such that the water content of the reaction mass is reduced to from about 2% to about 10% to form an ammonium glyphosate paste. The reaction mass is continuously conveyed to the product discharge region of the reactor and as part of the process, the adjuvant (i) increases the rate at which the glyphosate acid and ammonia react to form ammonium glyphosate and/or (ii) reduces the flow resistance of the reaction mass as it is being conveyed to the product discharge region of the reactor.

Provenance & Evidence