Back to results
US 4,902,850 AGranted
Purification of anethole by crystallization
AssigneeArizona Chemical Company
InventorCurry B. Davis
Life of this patent
Estimating the term…
Abstract
A method of purification for anethole which involves forming an aqueous emulsion of crude anethole and crystallizing anethole from the emulsion. The process provides a purified anethole having improved odor and taste.
Claims5
The method of improving the purity of crude anethole from the residue or high boiling fractions from the distillation of crude wood, gum or sulfate turpentine comprising:
- preparing an aqueous emulsion of crude anethole by combining crude anethole, emulsifier, and water at a temperature above the melting point of the crude anethole and agitating the mixture;
- cooling the emulsion to form crystals of purified anethole;
- separating the anethole crystals from the aqueous emulsion liquid phase;
- washing the crystals of the purified anethole with cool water;
- and
- removing the residual water from the purified anethole.
3 more elements
Dependencies are inferred from the claim text.