Method of preparing dextrin fatty acid ester, transparent oil gel containing the dextrin fatty acid ester produced therefrom, and transparent solid cosmetic material using the same
AssigneeShinsung Materials Co., Ltd.
InventorsKwang Shik KIM, Sang Kyu SHIN
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Abstract
Provided is a method for preparing a dextrin fatty acid ester that involves dispersing dextrin in an organic mixed solvent containing a hexane-based solvent, adding a fatty acid halide for reaction, and after the reaction, adding water to induce layer separation to isolate the supernatant, and precipitating crystals from the supernatant to provide a dextrin fatty acid ester, in particular, by providing a transparent dextrin palmitate with high gel strength, a transparent oil gel formulated with said dextrin palmitate and oil, and various transparent solid cosmetic materials using it can be provided.
Claims10
A method of preparing a dextrin fatty acid ester, comprising:
- a first step of dispersing dextrin in an organic mixed solvent containing a hexane-based solvent, and then adding a fatty acid halide while maintaining a temperature of 0 to 120° C. to carry out a reaction;
- a second step of adding water after the completion of the reaction to induce layer separation and separating the supernatant;
- and
- a third step of precipitating and drying crystals from the supernatant,
- wherein the organic mixed solvent has different polarities, and in the second step, the hexane-based solvent remains in the supernatant upon phase separation by water, thereby separating the dextrin fatty acid ester.
Dependencies are inferred from the claim text.