Multi-layer true spherical chitosan encapsulation of absolute (essential) oils for use in pesticidal activity
AssigneeGroPro Corporation
InventorJeff Hill
Life of this patent
Estimating the term…
Abstract
Some embodiments include a method of chitosan encapsulation of pesticidal active ingredients. The method includes adding a first active ingredient to a centrifuge, adding a solution containing chitosan into the centrifuge, centrifuging the chitosan-active ingredient mixture to create nanoparticle spheres of a first diameter, collecting the nanoparticle spheres of a first diameter, adding the nanoparticle spheres, a second active ingredient, and a chitosan solution into a centrifuge, and centrifuging to create nanoparticle spheres of a second diameter larger than the first diameter, and collecting the nanoparticle spheres of a second diameter.
Claims19
A pesticidal composition comprising:
- a liquid carrier;
- and
- a plurality of nanoparticles dispersed in the liquid carrier,
- wherein at least a portion of the plurality of nanoparticles comprises:
- a relatively spherical core comprising a first active ingredient;
- a first layer comprising chitosan, wherein the first layer partially surrounds the core;
- a second layer comprising a second active ingredient, wherein the second layer partially surrounds the first layer;
- and
- a third layer comprising chitosan, wherein the third layer at least partially surrounds the second layer;
- wherein, proceeding radially outward from the relatively spherical core, each nanoparticle in the portion comprises the relatively spherical core, the first layer, the second layer, and the third layer.
A nanoparticle configured for use in a pesticidal composition, the nanoparticle comprising:
- a relatively spherical core comprising a first active ingredient;
- a first layer comprising chitosan, wherein the first layer partially surrounds the relatively spherical core;
- a second layer comprising a second active ingredient, wherein the second layer partially surrounds the first layer;
- and
- a third layer comprising chitosan, wherein the third layer at least partially surrounds the second layer;
- wherein, proceeding radially outward from the relatively spherical core, the nanoparticle comprises the relatively spherical core, the first layer, the second layer, and the third layer.
A pesticidal composition comprising:
- a plurality of nanoparticles,
- wherein at least a portion of the plurality of nanoparticles comprises:
- a relatively spherical core comprising a first active ingredient;
- a first layer comprising chitosan, wherein the first layer partially surrounds the relatively spherical core;
- a second layer comprising a second active ingredient, wherein the second layer partially surrounds the first layer;
- and
- a third layer comprising chitosan, wherein the third layer at least partially surrounds the second layer;
- wherein, proceeding radially outward from the relatively spherical core, each nanoparticle in the portion comprises the relatively spherical core, the first layer, the second layer, and the third layer.
Dependencies are inferred from the claim text.