METHOD FOR PRODUCING AN AQUEOUS SUSPENSION OF ADHESIVE PARTICLES FOR TRAPPING PLANT PESTS

The invention relates to a method for producing an aqueous suspension of adhesive particles comprising:a) providing a vegetable oil comprising fatty acids chains, wherein the vegetable oil has a iodine value in the range of from 80 to 125, and wherein at least 15 wt% of the fatty acid chains are polyunsaturated;b) contacting the vegetable oil with an oxygen-containing gas at an oxidation temperature in the range of from 50 °C to 180 °C to obtain oxidized vegetable oil;c) allowing the oxidized vegetable oil to cool to a temperature in the range of from 15 to 35 °C to obtain cooled oxidized vegetable oil; andd) adding the cooled oxidized vegetable oil to an aqueous phase comprising a surfactant and subjecting the aqueous phase with added oxidized vegetable oil to mechanical shear to obtain a suspension of adhesive particles of oxidized vegetable oil, wherein the adhesive particles have a particle size distribution such that, based on the total number of particles with a largest diameter of at least 40 µm, at least 90 % of the particles have a largest diameter of at most 3,000 µm, preferably at most 2,000 µm, and at least 50 % of the particles have a largest diameter of at most 1,000 µm.The invention further relates to an aqueous suspension of adhesive particles obtainable by such method, and to a method for trapping plant pests comprising applying such aqueous suspension of adhesive particles, optionally after dilution with water, on a plant.