N-benzoyl-n'-2,5-dihalo-4-perfluoroalkoxyphenylureas, their preparation and use in the control of pests

Abstract From the Canadian patent

N-benzoyl-N'-2,5-dihalo-4-perfluoroalkoxyphenylureas their preparationand use in the control of pests Abstract, Novel substituted N-benzoyl-N'-2,5-dihalo-4-perfluoroalkoxyphenylureas of formula I, (I), in which R1 is hydrogen fluorine, chlorine or bromine; R2 is fluorine or chlorine; each of R3 and R1, is fluorine chlorine or bromine; and n is 2, 3, 4, 5 6, 7 or 8, processes and intermediates for their preparation their use in pest control, and pesticidal compositions that contain at least one compound of formula I as active ingredient are disclosed. The, preferred field of application is the control of pests in and on animals and plants.