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US 2017/0362136 A1Published application
Microencapsulated nitrification inhibitor compositions
OwnerHiteshkumar DAVE, Lei LIU +2inventors
InventorsHiteshkumar DAVE, Lei LIU, Raymond E. BOUCHER, JR., Greg POWELS
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Abstract
The present invention relates to an improved nitrification inhibitor composition and its use in agricultural applications.
Claims28
A microcapsule suspension formulation comprising:
- (a) a suspended phase of a plurality of microcapsules, said microcapsules having a volume median particle size of from about 1 to about 10 microns, wherein a microcapsule comprises:
- (1) a microcapsule wall produced by an interfacial polycondensation reaction between a polymeric isocyanate and a polyamine to form a polyurea shell having a weight percentage of about 0.2 to about 15 percent of a total weight of the microcapsule suspension formulation, and
- (2) a compound encapsulated within the polyurea shell wherein said compound is 2-chloro-6-(trichloromethyl)pyridine;
- and
- (b) an aqueous phase including at least one polymeric crystal growth inhibitor.
2 more elements
A method for reducing crystal formation in a microcapsule suspension formulation comprising the steps of:
- preparing a microcapsule suspension formulation comprising:
- (a) a suspended phase of a plurality of microcapsules, said microcapsules having a volume median particle size of from about 1 to about 10 microns, wherein a microcapsule comprises:
- (1) a microcapsule wall produced by an interfacial polycondensation reaction between a polymeric isocyanate and a polyamine to form a polyurea shell having a weight percentage of about 0.2 to about 15 percent of a total weight of the microcapsule suspension formulation, and
- (2) a compound encapsulated within the polyurea shell wherein said compound is 2-chloro-6-(trichloromethyl)pyridine;
- and
- (b) an aqueous phase;
- and
- combining the microcapsule suspension formulation with at least one polymeric crystal growth inhibitor.
5 more elements
Dependencies are inferred from the claim text.