Encapsulation of oleophilic substances and compositions produced thereby
AssigneeRoche Vitamins Inc.
InventorsStasia Boyle, Kuei-Tu Chang
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Abstract
Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
Claims7
A method for producing a composition, which comprises:
- (a) incorporating an oleophilic substance into a primary polymer-containing solution;
- and
- (b) solidifying the primary polymer under mixing conditions to encapsulate the oleophilic substance within the polymer and form the composition.
Dependencies are inferred from the claim text.