| 摘要 |
PURPOSE:The titled composition, obtained by adding a compound selected from cyanoacrylate based compounds or benzophenone based compounds, etc. as a light stabilizer to a 3(2H)-pyridazinone derivative, capable of enhancing the light stability and having high residual effect and safety. CONSTITUTION:An insecticidal and acaricidal composition obtained by adding one or two or more of cyanoacrylate based compounds expressed by formula II (R5 is 1-8C alkyl) or benzophenone based compounds expressed by formula III (R6 is 1-12C alkyl) or benzotriazole based compounds expressed by formula IV (R7 is tert-butyl, etc.; R8 is methylphenyl, etc.; R9 is H, etc.) as a light stabi lizer to at least one 3(2H)-pyridazinone derivative expressed by formula I (R is 2-6C alkyl; R<1> and R<2> are H or lower alkyl; R<4> is halogen; R<3> is halogen, 1-12C alkyl, cycloalkyl, lower haloalkyl, lower haloalkoxyl, etc.; n is an integer 1-5; R<2>n may be the same or different when n is 2-5).
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