COMPOSITION FUNGICIDE INSECTICIDE ET ACARICIDE SOLIDE

摘要

Novel 3(2H)-pyridazinone derivatives having the formula I: wherein, R ist an straight or branched C2 to C6 alkyl, R<1> and R<2> are each independently hydrogen or a lower alkyl, R<4> is a halogen, R<3> is a halogen, an alkyl, a cycloalkyl, an alkoxy, a haloalkyl, a haloalkoxy, -CN, -NO2, a phenyl, a benzyloxy, a benzyl, a phenoxy, a phenylthio, a pyridyloxy, a quinoxalyloxy, a lower alkenyloxy, a lower alkylthio, a lower haloalkylthio, -Si(CH3)3, -OH, -N(CH3)2, -SCN, -COOCH3 or -OCH(CH3)COOC2H5, and n is an integer of 1 to 5, said R<3> being the same or different when n is an integer of 2 to 5. A process for preparation of said derivatives is also provided. These derivatives are useful as an active ingredient of insecticidal, acaricidal, nematicidal and/or fungicidal compositions for agricultural and horticultural uses as well as of expellent compositions for ticks parasitic on animals.