申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0543027A1
公开(公告)日:1993-05-26
An aqueous suspension of a microcapsular insecticidal composition is obtained by emulsifying a liquid pyrethroid insecticide or a hydrophobic solution comprising a pyrethroid insecticide and a high-boiling solvent, preferably an alkyl phthalate wherein the alkyl group has 8 to 13 carbon atoms, in the presence of a water-soluble anionic polymeric surfactant to obtain liquid particles having appropriate diameters and polycondensing melamine-formaldehyde or its derivative on the surfaces of the obtained particles. This composition has a prolonged stable insecticidal effect and is reduced in the toxicity against aquatic animals.
一种微胶囊杀虫组合物的水悬浮液是在水溶性阴离子聚合物表面活性剂的存在下,通过乳化液体拟除虫菊酯杀虫剂或由拟除虫菊酯杀虫剂和高沸点溶剂(最好是烷基邻苯二甲酸酯,其中烷基有 8 至 13 个碳原子)组成的疏水溶液,以获得具有适当直径的液体颗粒,并在获得的颗粒表面上缩聚三聚氰胺-甲醛或其衍生物而得到的。这种组合物具有长期稳定的杀虫效果,并降低了对水生动物的毒性。