Process for preparing highly active water-dispersible pesticides
申请人:DOWELANCO
公开号:EP0349999A2
公开(公告)日:1990-01-10
A highly active water-dispersible pesticide formulation is prepared by dissolving at least a part of a benzoyl phenyl urea series insecticidal compound in an organic solvent, contacting the so obtained mixture with a carrier material, and pulverizing the resulting mixture. The pesticidal formulation obtained has higher pesticidal activity than formulations prepared by a conventional dry methods.
A pesticidal composition with low crystal growth in the form of an emulsifiable concentrate of a pesticidal compound comprises
a) a water-insoluble crystalline pesticidal material
b) an organic solvent and
c) a surfactant,
d) a dimethylamide of a C₈ to C₁₀ carboxylic acid.
The solubility of component (a) in component (b) alone is insufficient to permit the formation of a commercially acceptable concentrate, the organic solvent is miscible with component (d), and the solubility of water in component (b) is less than 1% by weight.
一种晶体生长率低的杀虫组合物,其形式为杀虫化合物的乳油,包括
a) 不溶于水的结晶农药材料
b) 一种有机溶剂和
c) 一种表面活性剂
d) C₈ 至 C₁₀ 羧酸的二甲基酰胺。
(a)组分在(b)组分中的溶解度不足以形成商业上可接受的浓缩物,有机溶剂可与(d)组分混溶,水在(b)组分中的溶解度小于 1%(按重量计)。