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US 5,296,450 AGranted
Water dispersible granular herbicidal compositions comprising dinitroaniline herbicides, montmorillonite carrier, and a base
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 a dispersion enhancing agent and to a process for the preparation of said compositions. Such compositions are storage stable and contain desirable dispersion properties.
Claims16
A water dispersible granular composition comprising on a weight to weight basis about 20% to 90% of a dinitroaniline 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 base selected from the group consisting of amines and alkali metal hydroxides.
1 more element
A method for the production of a dinitroaniline-containing water dispersible granular composition comprising the steps of:
- (a) milling about 20% to 90% by weight of a dinitroaniline herbicide;
- (b) blending the milled dinitroaniline herbicide 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 bases selected from the group consisting of amines and alkali metal hydroxides 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.
4 more elements
Dependencies are inferred from the claim text.