Patent ID: 9044012
Filing Date: 2015-06-02
Classification: A01N

Abstract:
1. A method of fighting insects comprising contacting the insects with formulations having a prolonged knockdown and insecticidal activity at least longer than three months from the contacting, said formulations comprising microcapsules with polyurea walls obtainable by interfacial polymerization of diphenylmethylen-4,4′-diisocyanate (MDI), wherein the microcapsules comprise: an active principle selected from the pyrethroid and/or neonicotinoid classes, synergizing agents selected from piperonylbutoxide (PBO) and 4-[1-(2-butin-1 -yloxy)ethyl]-1,2- di-methoxy benzene (Verbutin), the concentration of the active principle in the microcapsule as % by weight on the total of the micro-capsule ranges from 1 % to 60 %, the average diameter of the microcapsule ranges from 2 to 50 μm.