Agrochemical Nanoparticulate Active Ingredient Formulations
    23.
    发明申请
    Agrochemical Nanoparticulate Active Ingredient Formulations 审中-公开
    农药纳米颗粒活性成分配方

    公开(公告)号:US20080220970A1

    公开(公告)日:2008-09-11

    申请号:US12091179

    申请日:2006-10-17

    摘要: The present invention comprises aqueous dispersions comprising a nanoparticulate formulation of crop protection agents in which the nanoparticles have core-shell structures having a mean particle diameter of 0.05 to 2.0 μm and the crop protection agent is present in the core X-ray amorphous together with one or more polymers, where the polymer is not or only partially soluble in water or aqueous solutions or water/solvent mixtures and the shell consists of a stabilizing coating matrix, preparable by a process which comprises (a) preparing a solution of the crop protection agent in a water-immiscible organic solvent, (b) dissolving the core polymer in a water-immiscible organic solvent; and (c) emulsifying the mixture resulting from (a) and (b) with an aqueous solution comprising components of the coating matrix by injecting the corresponding solutions into a mixing chamber and removing the organic solvent after emulsification.

    摘要翻译: 本发明包括水分散体,其包含作物保护剂的纳米颗粒制剂,其中纳米颗粒具有核 - 壳结构,其平均粒径为0.05至2.0μm,并且作物保护剂存在于芯X射线无定形中以及一个 或更多的聚合物,其中聚合物不是或仅部分可溶于水或水溶液或水/溶剂混合物,并且壳由稳定涂层基质组成,其可通过方法制备,所述方法包括(a)制备作物保护剂 在水不混溶的有机溶剂中,(b)将芯聚合物溶解在与水不混溶的有机溶剂中; 和(c)通过将相应的溶液注入混合室中并在乳化后除去有机溶剂,用包含涂层基质组分的水溶液乳化由(a)和(b)得到的混合物。