Nippon Soda Co., Ltd.

Satoru Yamamura

Yuichi Maekawa

Masayuki Sukekawa

Hiroshi Dairiki

Nobuyuki Tanaka

Masahiro Ura

Kazuhiro Shimanuki

Yoshihisa Endo

Disclosed is a method which can readily design an agricultural chemical-containing resin composition having a desired release rate history and can produce the agricultural chemical-containing resin composition. Specifically disclosed is a method for producing an agricultural chemical-containing resin composition, including: respectively selecting an acetamiprid content Acand a hydrophilic white carbon content Cain the composition relative to the total mass of acetamiprid, a styrene-maleic anhydride copolymer or a styrene-maleic anhydride copolymer-mixed resin, and hydrophilic white carbon, so as to satisfy the inequations of: 0.524&#xd7;Ac+1.422&#xd7;Ca&#x2212;6.009&#x2266;40% by mass, 5% by mass&#x2266;Ac&#x2266;35% by mass, and Ca&#x2267;0.1% by mass; and mixing the acetamiprid, the styrene-maleic anhydride copolymer or the styrene-maleic anhydride copolymer-mixed resin, and the hydrophilic white carbon, so that the thus selected contents Acand Cacan be achieved.

Method for producing agrichemical-containing resin composition

The present invention provides a method for producing a co-crystal including thiophanate-methyl and a triazole-based compound such as tebuconazole and a method for producing an agricultural and horticultural chemical preparation using the co-crystal as a raw material. As one example, the agricultural and horticultural chemical preparation can be obtained by a method including the steps of obtaining a sol including a co-crystal by stirring a suspension including thiophanate-methyl, a triazole compound such as a tebuconazole, a surfactant, a defoaming agent and water at a mixing degree of 0.1-1.0 while holding the temperature of the suspension at 60&#xb0; C.; and adding auxiliary components such as silica, calcium carbonate and the like to the sol.

Co-crystal production method

An agrochemical composition is provided in which an agrochemically active ingredient having 4 or more fluorine atoms in a molecule and having a Log P value of 3 or more is contained, and superior disintegration dispersibility is exhibited, and which is suitable for a water dispersible granule or a suspension concentrate. An agrochemical composition is characterized by containing (a1) an agrochemically active ingredient having 4 or more fluorine atoms in a molecule and having a Log P value of 3 or more, or (a2) an agrochemically active ingredient for which, in a fluidity test of a mixture composed of 50 parts by weight of the agrochemically active ingredient, 2 parts by weight of sorbitan monooleate and 48 parts by weight of water, the time for moving 85 mm is not less than 90 seconds, in an amount ranging from 0.1 to 70% by weight of the total amount of the composition, and (b) a wetting agent such as an alkylsulfate salt, in an amount ranging from 0.1 to 10% by weight of the total amount of the composition.

Agrochemical composition

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Takaoka, Japan

Satoru Yamamura