METHOD FOR PRODUCING AGRICHEMICAL-CONTAINING RESIN COMPOSITION.

摘要

Disclosed is a method which can design an agrichemical-containing resin composition having a desired elution rate history readily and can produce the agrichemical-containing resin composition.  Specifically disclosed is a method for producing an agrichemical-containing resin composition comprising acetamiprid, a styrene-(maleic anhydride) copolymer or a resin mixed with a styrene-(maleic anhydride) copolymer, and a hydrophilic white carbon.  The method comprises: selecting the content of acetamiprid (AcSA) and the content of the hydrophilic white carbon (CaSA) in the composition in such a manner that the content (AcSA) and the content (CaSA) relative to the total mass of acetamiprid, the styrene-(maleic anhydride) copolymer or the resin mixed with the styrene-(maleic anhydride) copolymer and the hydrophilic white carbon meet the requirements represented by the following formulae 0.524×AcSA+1.422×CaSA-6.009 ≤ 40 mass%, 5 mass% ≤ AcSA ≤ 35 mass%, and CaSA ≥ 0.1 mass%; and mixing acetamiprid, the styrene-(maleic anhydride) copolymer or the resin mixed with the styrene-(maleic anhydride) copolymer and the hydrophilic white carbon with one another at such a ratio that the above-selected contents AcSA and CaSA can be achieved.