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US 5,492,701 AGranted
Process for the preparation of spherules
AssigneeRhone-Poulenc Nutrition Animale
InventorsEric Cervos, Pierre Labourt-Ibarre, Jean-Claude Le Thiesse, Eraclis Statiotis
Life of this patent
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Abstract
An oil-in-water emulsion is passed through a nozzle to form spherules which are allowed to fall countercurrent to a flow of cold air and which are recovered utilizing either a liquid crosslinking agent or a solution, preferably aqueous, optionally containing a crosslinking agent.
Claims22
A process for the preparation of spherules of at least one of Vitamin A acetate and Vitamin E which comprises:
- in a first step, preparing an oil-in-water emulsion of at least one of Vitamin A acetate and Vitamin E suspended in water, the water containing at least one protein;
- in a second step, forming spherules by passing the oil-in-water emulsion through a nozzle;
- in a third step, allowing the spherules formed to fall in a tower countercurrent to a flow of cold air into at least one liquid crosslinking agent for a time sufficient to crosslink the spherules;
- and
- in a fourth step, recovering the spherules from the liquid crosslinking agent.
2 more elements
Dependencies are inferred from the claim text.