Water-based herbicidal suspension of sulfonylurea

Details Water-based herbicidal suspension of sulfonylurea Water-based herbicidal suspension of sulfonylurea

A - Human Necessities

01

N

A01N 47/36 (2006.01) A01N 25/22 (2006.01)

Patent

CA 2617266

Not so many reports on the practical use of herbicidal sulfonylurea compounds have been made since they easily decompose in water or a process for production of their suspensions is complicated. Therefore, it is desired to prepare a water-based herbicidal suspension in which a herbicidal sulfonylurea compound will not decompose in water and excellent suspensibility of which is maintained, without complicated process. A water-based herbicidal suspension comprising (1) a herbicidal sulfonylurea compound (excluding 1-[3-[(4,6- dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-2-pyridyl]-2-fluoropropyl methoxyacetate and N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-2-(2-fluoro- 1-hydroxypropyl)-3-pyridinesulfonamide) or its salt, (2) an inorganic salt, (3) at least one sulfonate selected from the group consisting of an aryl sulfonate, an alkylaryl sulfonate and their formaldehyde condensates and (4) water.

Il n'existe pas beaucoup de rapports sur l'utilisation pratique de composés herbicides à base de sulfonylurée étant donné qu'ils se décomposent facilement dans l'eau ou d'un procédé pour la production de leurs suspensions est compliqué. Par conséquent, la présente invention a trait à une suspension herbicide aqueuse dans laquelle un composé herbicide à base de sulfonylurée ne va pas se décomposer dans l'eau et dont l'excellente aptitude à la suspension est maintenue, sans procédé compliqué. La présente invention a trait à une suspension comportant (1) un composé herbicide à base de sulfonylurée (à l'exclusion de 1-[3-[(4,6-diméthoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-2-pyridyl]-2-fluoropropyl méthoxyacétate et de N-[(4,6-diméthoxypyrimidin-2-yl)aminocarbonyl]-2-(2-fluoro-1-hydroxypropyl)-3-pyridinesulfonamide) ou son sel, (2) un sel inorganique, (3) au moins un sulfonate choisi parmi le groupe constitué d'un sulfonate d'aryle, d'un sulfonate d'alkylaryle et de leurs condensats de formaldéhyde et (4) de l'eau.

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