| abstract |
The present invention relates to aqueous insecticidal preparations in the form of an aqueous dispersion of highly dispersed polymer particles, which contain at least one insecticidal organic active substance having a solubility in water of not more than 5 g / l at 25 ° C and 1013 mbar, and which have an average size , determined by dynamic light scattering, not more than 300 nm, where polymer particles that contain at least one insecticidal active ingredient have a cationic surface charge and where an aqueous dispersion of polymer particles containing the active ingredient is obtained by radical emulsion polymerization in aqueous phase of the monomeric composition of ethylenically unsaturated monomers M, in which the ethylenically unsaturated monomers M contain at least one insecticidal active ingredient in dissolved form. The invention also relates to the use of such aqueous insecticidal compositions for protecting lignocellulosic materials, in particular woody ones, from attack by harmful insects. |