Oil-based suspension concentrates with low gravitational separation and low viscosity
AssigneeBayer CropScience AG
InventorsMalcolm Faers, Oliver Gaertzen, Andreas Roechling, Arno Ratschinski
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Abstract
The present invention relates to new, oil-based suspension concentrates of agrochemical active compounds, a process for the preparation of these formulations and their use for the application of the active compounds contained.
Claims13
An oil-based suspension concentrate comprising at least one agrochemical active compound which is solid at room temperature, low-density particles having a density of 0.01 to 0.16 g/cm3, at least 300 g/l of one or more water immiscible fluids and less than 50 g/l of water, wherein the density is the density of the individual low-density particles, and wherein the low-density particle size (d50) ranges from 20 to 90 μm,
- wherein the low-density particles are hollow microspheres composed of glass, ceramic, or (co-)polymeric materials,
- further comprising 1 to 80 g/l of one or more rheological modifier selected from the group consisting of hydrophobic and hydrophilic fumed and precipitated silica particles, gelling clays, hydrogenated castor oil (trihydroxystearin), castor oil organic derivatives, and combinations thereof.
An oil-based suspension concentrate comprising:
- a) 2 to 500 g/l of one or more agrochemical active compound which is solid at room temperature,
- b) 1 to 80 g/l of one or more rheological modifier selected from the group consisting of hydrophobic and hydrophilic fumed and precipitated silica particles, gelling clays, hydrogenated castor oil (trihydroxystearin), castor oil organic derivatives, and combinations thereof.
- c) 0.01 to 50 g/l of low-density particles, wherein the low-density particles are hollow microspheres composed of glass, ceramic or (co-)polymeric materials,
- d) 300 to 900 g/l of one or more water immiscible fluid and
- e) 5 to 250 g/l of one or more non-ionic surfactant or dispersing aid and/or at least one anionic surfactant or dispersing aid,
- wherein the low-density particles c) have a density of 0.01 to 0.16 g/cm3,
- wherein the density is the density of the individual low-density particles, and wherein the low-density particle size (d50) rangers from 20 and 90 μm.
Dependencies are inferred from the claim text.