PROBLEM TO BE SOLVED: To provide a high-concentration agrochemical technical products aqueous dispersion where the technical product is dispersed in water with good storage stability, and to provide a method for producing the aqueous dispersion.SOLUTION: The high-concentration agrochemical aqueous dispersion contains 50-75 mass% of a liposoluble agrochemical technical product and 20-45 mass% of an emulsifier doubling as a dispersoid, i.e. a combination of an anionic emulsifier and a nonionic emulsifier, or a cationic emulsifier and a nonionic emulsifier. This high-concentration agrochemical aqueous dispersion is obtained by the following procedure: A mixture of half or less of the agrochemical technical product, 30-70 mass% of the emulsifier doubling as the dispersoid and an aqueous dispersion medium is emulsified and dispersed by high-speed agitation suppressed in bubble formation to obtain an emulsified dispersion. Meanwhile, the balance of the agrochemical technical product and the balance of the emulsifier doubling as the dispersoid are homogeneously mixed together and added to the above emulsified dispersion while making a high-speed agitation suppressed in bubble formation.COPYRIGHT: (C)2007,JPO&INPIT【課題】保存安定性よく水中に分散させた、高濃度の農薬原体の水分散体、およびそれらの製造方法の提供。【解決手段】油溶性の農薬原体を農薬水分散体に対して50質量%~75質量%含有し、乳化剤兼分散質としてアニオン系乳化剤とノニオン系乳化剤との併用系、またはカチオン系乳化剤とノニオン系乳化剤との併用系を、農薬水分散体に対して20質量%~45質量%含有し、水系分散媒を農薬水分散体に対して5質量%~20質量%含有し、農薬原体のうちの半量以下、乳化剤兼分散質のうちの30%~70%量および水系分散媒の混合物を、泡の発生を抑制した高速攪拌により乳化分散して乳化分散体を得、農薬原体のうちの残量および乳化剤兼分散質のうちの残量を均一に混合してから、泡の発生を抑制した高速攪拌を行いながら乳化分散体に添加することによって得られる高濃度の農薬水分散体。【選択図】なし
