Low-Foam Agrochemical Compositions

摘要

An aqueous agrochemical active-ingredient composition, comprising (a) one or more water-soluble agrochemical active ingredients, (b) one or more alkyl glucamides of formula (I), wherein R1 represents a linear or branched alkyl group comprising 5 to 9 carbon atoms, R2 represents an alkyl group comprising 1 to 3 carbon atoms, (c) represents one or more silicone-based defoamers selected from the group of linear polydimethylsiloxanes and (d) water. For the defoamer, the ratio of dynamic surface tension at a concentration of 2.0 g/l and a surface age of 20 ms in 20 wt % aqueous propylene glycol to the dynamic surface tension under identical conditions in 20 wt % aqueous dipropylene glycol is greater than 1:10 and the ratio of the dynamic surface tension at a concentration of 2.0 g/l and a surface age of 20 ms in 20 wt % propylene glycol to the dynamic surface tension at a concentration of 10.0 g/l and a surface age of 20 ms in tap water is greater than 1:10. Said aqueous agrochemical active-ingredient composition is suitable for manufacturing low-foam application forms of agrochemical active ingredients.;

主权项

1. An aqueous agrochemical active ingredient composition comprising
(a) at least one water-soluble active agrochemical ingredient, (b) at least one alkylglucamide of the formula (I), whereR1 is a linear or branched alkyl group having 5 to 9 carbon atoms,R2 is an alkyl group having 1 to 3 carbon atoms, (c) at least one silicone-based defoamer selected from the group consisting of linear polydimethylsiloxanes, and (d) water,where for the defoamer c) the ratio of dynamic surface tension at a concentration of 2.0 g/l and a surface age of 20 ms in 20 wt % strength aqueous propylene glycol to the dynamic surface tension under the same conditions in 20 wt % strength aqueous dipropylene glycol is greater than 1.10 and the ratio of the dynamic surface tension at a concentration of 2.0 g/l and a surface age of 20 ms in 20 wt % strength aqueous propylene glycol to the dynamic surface tension at a concentration of 10.0 g/l and a surface age of 20 ms in mains water is greater than 1.10.