Patent ID: 9451764
Filing Date: 2016-09-27
CPC Classification: A01N

Claim Text:
1. A suspension concentrate comprising: (a) at least one active insecticidal ingredient; (b) a wax: (i) having a melting point of 50 to 160° C., (ii) containing said active insecticidal ingredient and (iii) in the form of particles having a particle size of 5 to 40 μm; and (c) water; wherein the ratio, in percent by weight of the suspension concentrate, is about 0.5% to 5% by weight of the active insecticidal ingredient to 2% to 13% by weight of the wax, to 65% to 90% by weight of water; wherein the suspension concentrate is made by a process comprising: (i) melting the wax; (ii) incorporating the active insecticidal ingredient uniformly into the melted wax to form a mixture as spraying solution; (iii) the spraying solution is atomized from a heated reservoir, which has been heated to at least 90° C., into a cold environment in a spraying tower, whereby the sprayed droplets of the spraying solution are solidified and solid active insecticide-containing wax particles are obtained; and (iv) dispersing the solid active insecticide-containing wax particles in water to form the suspension concentrate; and wherein the active insecticidal ingredient is in the form of crystals present at the surface of said wax particles.