| 摘要 |
PURPOSE: A labor-saving agrochemical particle is provided to quickly diffuse agrochemical active ingredients and to widely express drug effect. CONSTITUTION: A labor-saving agrochemical particle is prepared by mixing 0.1-50 wt% of agrochemical active ingredients, 0.1-10 wt% of dispersing agent, 0.1-20 wt% of water soluble disintegrant, 5-30 wt% of water floating aid, 0.1-10 wt% of binder, and 10-80 wt% of diluents to form a core and mixing the core with dispersing agent and dispersing aid to prepare a coating solution, and coating with the coating solution. The coating solution contains one or more kinds of agrochemical active ingredients. The dispersing agent is sodium dodecyl benzenesulfonate, alkylnaphthalene sulfonate, sodium or calcium lignosulfonate, sodium polyacrylate, acetylene diol, or acetylene diol derivatives. The dispersing aid is vegetable oil, mineral oil, paraffin oil, dodecyl alkyl benzene, methyl oleate, polyethylene glycol, 1-octyl-2-pyrrolidone, diisotridecylphthalte, or diethylene glycol monobutyl ether. [Reference numerals] (AA) Process of mixing agrochemical active ingredients, dispersing agent, water soluble disintegrant, binder, and diluents, pulverizing in an average particle size of 30 um or less, and adding water floating aid to obtain uniform powder(first process); (BB) Process of adding water to powder which is prepared at process 1 and kneading(process 2); (CC) Process of extruding and assembling mixture prepared at process 2 through screen hole(process 3); (DD) Process of drying assembled material which is prepared at process 3 by 3% or less of moisture using fluidized bed drier(process 4); (EE) Process of cutting dried granules prepared at process 4, removing dust, and obtaining cores of agrochemical granules(process 5); (FF) Process of mixing dispersing aid and dispersing agent and preparing coating solution of uniform liquid phase(process 6); (GG) Process of adding cores of agrochemical granules to a ribbon mixer or trim mixer, spraying coating solution prepared at process 6 to the core of agrochemical granules, and coating(process 7)
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