Water dispersible granular herbicidal compositions comprising dinitroaniline and imidazolinone herbicides with montmorillonite carriers
AssigneeAmerican Cyanamid Company
InventorsJoseph Kimler, Robert Kubisch
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Abstract
The present invention relates to water dispersible granular compositions comprising a dinitroaniline herbicide and an imidazolinone herbicide with a montmorillonite carrier, and to a process for the preparation of the compositions. Such compositions are storage stable and possess desirable dispersion properties.
Claims20
A water dispersible granular composition comprising on a weight to weight basis about 20% to 90% of a dinitroaniline herbicide, in combination with about 1% to 20% of an imidazolinone herbicide;
- about 5% to 25% of a montmorillonite carrier;
- about 1.0% to 7.5% of a wetting agent;
- about 2% to 10% of a suspension agent;
- and about 0.5 to 20% of a dispersion enhancing agent.
A method for the production of a dinitroaniline-containing water dispersible granular composition having improved dispensability comprising the steps of:
- (a) milling about 20% to 90% by weight of a dinitroaniline herbicides with about 1% to 20% by weight of an imidazolinone herbicide;
- (b) blending the milled herbicide combination produced by step (a) with about 1% to 7.5% by weight of one or more wetting agents, about 2% to 10% by weight of one or more suspension agents and about 5% to 25% by weight of one or more montmorillonite carriers;
- (c) milling the blend produced by step (b) in the presence of an unreactive refrigerant sufficient to cool the mill;
- (d) mixing about 0.5% to 20% by weight of one or more dispersion enhancing agents with water and the milled blend produced by step (c);
- (e) extruding the milled blend into granular compositions;
- and
- (f) drying the extruded granular compositions.
Dependencies are inferred from the claim text.