Process for preparing paste-extruded sulfonamide compositions

Details Process for preparing paste-extruded sulfonamide compositions Process for preparing paste-extruded sulfonamide compositions

A - Human Necessities

01

N

A01N 47/36 (2006.01)

Patent

CA 2498006

Paste-extruded sulfonamide herbicide compositions having improved spray equipment clean-out properties are made by preparing a mixture comprising a sulfonamide herbicide free acid, at least about 50 equivalent % of an inorganic base relative to the sulfonamide herbicide free acid and sufficient water to form an extrudable paste, extruding the mixture to form an extrudate, and drying the extrudate.

L'invention concerne un procédé de préparation de compositions herbicides sulfonamides extrudées à partir d'une pâte, ces compositions possédant des propriétés améliorées en termes de facilité de nettoyage des équipements de pulvérisation. Ce procédé consiste à préparer un mélange comprenant un acide libre herbicide sulfonamide, au moins 50 % en équivalence d'une base inorganique par rapport à l'acide libre herbicide sulfonamide et de l'eau en quantité suffisante pour former une pâte extrudable, à extruder ce mélange pour former un extrudat, puis à sécher cet extrudat.

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