Processes for preparing suspension concentrate formulations comprising pesticidal mixtures
AssigneeFMC Corporation
InventorGuozhi Wang
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Abstract
Described herein are processes for preparing aqueous suspensions of organic pesticides. The processes include inducing crystallization of an amorphous organic pesticide with a crystalline organic pesticide where the crystalline organic pesticide and amorphous organic pesticide are not identical. Also described herein are aqueous pesticide formulations including the prepared aqueous suspensions.
Claims20
A process of preparing an aqueous suspension of organic pesticides, the process comprising
- I) forming a mixture comprising
- A) a formulation additive;
- and
- B) at least one crystalline organic pesticide;
- II) adding at least one amorphous organic pesticide to the mixture under conditions of agitation or emulsification;
- III) crystallizing the at least one amorphous organic pesticide;
- IV) optionally filtering the mixture;
- V) optionally drying the mixture;
- and
- VI) optionally milling the mixture;
- wherein the at least one amorphous organic pesticide is not identical to the at least one crystalline organic pesticide.
A process of preparing an aqueous suspension of organic pesticides, the process comprising
- I) forming a mixture comprising a formulation additive;
- II) adding at least one amorphous organic pesticide to the mixture under conditions of agitation or emulsification;
- III) adding at least one crystalline organic pesticide to the mixture;
- IV) crystallizing the at least one amorphous organic pesticide;
- V) optionally filtering the mixture;
- VI) optionally drying the mixture;
- and
- VII) optionally milling the mixture;
- wherein the at least one amorphous organic pesticide is not identical to the at least one crystalline organic pesticide.
The process of any of claims 1-5, wherein the at least one amorphous organic pesticide has a solubility in water of less than about 2 mg/L at 20° C.
Dependencies are inferred from the claim text.