Encapsulated oil-in-water type emulsion composition
AssigneeAjinomoto Co., Inc.
InventorsTatsuki Ueyama, Tatsuya Hattori
Life of this patent
Estimating the term…
Abstract
Encapsulated oil-in-water type emulsion compositions, which comprise an acylamino acid alkylamide or an acylglutamine alkyl ester, an oily base, a polar solvent and water, do no exhibit coalescence of the dispersed phase, and can be produced by a simple method without resort to a special apparatus, are excellent in stability with time, do not impart an uncomfortable feeling during application, are excellent in a sensory feeling that satisfies both a moisturizing feeling and an emollient feeling, and are excellent in appearance.
Claims17
An encapsulated oil-in-water type emulsion composition, comprising components (A), (B), (C) and (D):
- (A) an acylamino acid alkylamide represented by formula (1):
- wherein R1 and R2 each independently represent a hydrocarbon group having 1 to 26 carbon atoms, R3 represents a hydrocarbon group having 7 to 11 carbon atoms, and n represents 1 or 2;
- (B) at least one oily base selected from the group consisting of decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, octyl oxystearate, neopentylene glycol dioctanoate liquid paraffin, squalane, mink oil, cacao oil, camellia oil, sesame oil, olive oil, and silicone oils;
- (C) at least one higher alcohol selected from the group consisting of isostearyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, hexadecyl alcohol, and octyldodecanol;
- and
- (D) water;
- wherein:
- components (A), (B), and (C) form an encapsulated oily phase that is dispersed in component (D);
- a weight ratio of a weight of component (A) to a total weight of component (B) and component (C) is in a range of from 0.01:99.99 to 20:80;
- a weight ratio of a weight of component (B) to a total weight of component (A) and component (C) is in a range of from 99:1 to 24:76;
- a weight ratio of a weight of component (C) to a total weight of component (A) and component (B) is in a range of from 70:30 to 0.8:99.2;
- a weight ratio of a weight of component (D) to a total weight of component (A), component (B), and component (C) is in a range of from 99:1 to 50:50;
- a gelation (solidification) temperature of the oil phase is 100° C. or less;
- and
- an oil phase of the emulsion does not coalesce when a gravitational acceleration of less than 200 G is applied.
Dependencies are inferred from the claim text.