EP0477135A1 — Chewable spheroidal coated microcapsules and methods for preparing same

USPTO Abstract

The present invention pertains to a chewable spheroidal coated microcapsule under about 850 microns in diameter which comprises at least one spray congealed spheroidal microcapsule core under about 200 microns in diameter, a first wax spray coating layer over the core, and a second oil coating layer over the first coated core, wherein the coated microcapsule comprises (A) a microcapsule core comprising, in percentages by weight of the microcapsule core (a) a medicament present in an amount from about 1% to about 40%, (b) an edible material having a melting point from about 25°C. to about 100°C. selected from the group consisting of (i) fatty acids having an iodine value from about 1 to about 10, (ii) natural waxes, (iii) synthetic waxes, and (iv) mixtures thereof, present in an amount from about 9.5% to about 98.5%, (c) an emulsifying agent present in an amount from about 0.5% to about 20%, (B) a first wax spray coating layer over the microcapsule core comprising, in percentages by weight of the first coating layer (a) an edible material having a melting point from about 25°C. to about 100°C. selected from the group consisting of (i) fatty acids having an iodine value from about 1 to about 10, (ii) natural waxes, (iii) synthetic waxes, and (iv) mixtures thereof, present in an amount from about 60% to about 99.5%, (b) an emulsifying agent present in an amount from about 0.5% to about 20%, and (C) a second oil coating layer over the first coated microcapsule core comprising an edible vegetable oil having a melting point in the range from about 25°C. to about 90°C.