Patent ID: 8440213
Filing Date: 2013-05-14
Classification: A01N

Abstract:
1. A stable concentrated microemulsions comprising: 1) 10-25 parts by weight of a pesticide stable in water having a solubility in water at 20° C. lower than 1% by weight and a melting point from 10° C. to 60° C.; 2) 8-25 parts by weight of one or more solvents containing oxygen atoms having a flash point >60° C., solubility in water at 20° C. lower than 5% by weight, and a Hildebrand solubility parameter in a range of 16-21 MPa 3) 10-20 parts by weight of a polyol soluble in water at 20° C.; 4) 10-25 parts by weight of one or more nonionic surfactants having a hydrophylic/lipophylic balance (HLB) value from 9 to 15; 5) 2-10 parts by weight of one or more anionic surfactants; and 6) 20-40 parts by weight of water; wherein the sum of the amounts of the components 1), 2), 3), 4), 5), and 6) is 100 parts by weight; the ratio by weight of the solvent 2) to the pesticide 1) ranges from 0.8:1 to 1.5:1; the ratio by weight of the sum of the amounts of the surfactants 4) and 5) to the amount of the pesticide 1) ranges from 0.5:1 to 3:1; the ratio by weight of 4) to 5) ranges from 1:1 to 4:1; and wherein the one or more solvents 2) are selected from the group consisting of: acetals, alkyl esters of carboxylic acids with the alkyl comprised between C