Encapsulation of materials
OwnerCarleton G. Merrittinventor
Life of this patent
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Abstract
A free flowing, spray dried, rod-shaped particulate product, which is readily redispersible in water, is produced by preparing an aqueous solution of an encapsulating material, forming a dispersion by adding an active material to the solution, and spray drying the dispersion through a nozzle having a relatively small vortex device and a relatively large orifice. Relative weight of the encapsulating material to the total weight of the encapsulating material and water is at least 55% and viscosity of the dispersion is at least about 300 cps measured at 70.degree. C.
Claims14
Method for preparing encapsulated product comprising preparing a dispersion of encapsulating material, active material and water wherein weight of the encapsulating material to the total weight of the encapsulating material and water is at least about 55% and Brookfield viscosity of the dispersion containing the encapsulating material, the active material and water is at least about 300 cps measured at 70.degree. C. wherein the encapsulating material is selected from the group consisting of modified starch, hydrolyzed gums, hydrolyzed gelatin and mixtures thereof and the active material is selected from the group consisting of essential oils, oleo resins, imitation flavors and fragrances and mixtures thereof;
- and spray drying said dispersion through a vortex creating device sufficiently small and an orifice sufficiently large to permit spray drying of said dispersion at a feed pressure of at least 1500 psi to produce a product having at least a substantial portion of its particles in elongated, non-spherical, rod-shaped form.
Dependencies are inferred from the claim text.