JP2001122734A - Emulsified cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an emulsified cosmetic excellent in stability even on blending a ceramide having a high moisture-holding effect or at a high temperature and exhibiting a good use feeling by using pectin as a thickener. SOLUTION: This emulsified cosmetic is obtained by containing (A) a ceramide, (B) pectin, a liquid state oil and water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emulsified cosmetic having excellent stability even at a high temperature and a good feeling upon use.

[0002]

BACKGROUND OF THE INVENTION Ceramides are found between keratinous cells,
It is known that it forms a layered structure and contributes to adhesion of keratinocytes and hydration of keratin. For this reason, cosmetics having a high moisturizing effect and containing ceramides have been studied. However, in cosmetics containing ceramides, in order to increase the stability of the system, when carboxyvinyl polymers, which are conventionally used as thickeners such as emulsions and creams, are used, gelling occurs especially at high temperatures. This causes problems such as poor fluidity of the emulsion and poor cream fingers. In this case, if a large amount of an ionic surfactant is used in combination, the emulsified state can be improved to some extent, but the feeling in use is deteriorated. Further, when a nonionic polymer such as hydroxymethylcellulose or methylcellulose is used, gelation at a high temperature can be suppressed, but sufficient viscosity and stability required for the product cannot be obtained, and the feeling of use is poor.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an emulsified cosmetic which has excellent stability even at high temperatures and a good feeling upon use.

[0004]

Means for Solving the Problems The present inventors have found that if pectin is used as a thickening agent in emulsified cosmetics containing ceramides, it is stable even at a high temperature, the viscosity does not become too high, and the feeling of use is improved. It has been found that a good emulsified cosmetic can be obtained.

[0005] The present invention provides an emulsified cosmetic containing (A) ceramides, (B) pectin, liquid oil and water.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The ceramides of the component (A) used in the present invention include natural ceramides and sphingosine derivatives as well as JP-A-62-228048 and JP-A-63-21.
No. 6812, JP-A-63-227513, JP-A-64
-29347, JP-A-64-31752, JP-A-Hei-8
Ceramide-like structural substances described in -319263 and the like. Among them, natural ceramides, sphingosine derivatives, and ceramide-like structural substances selected from the following general formulas (1) and (2) are preferable.

[0007]

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Wherein R ¹ is a hydrocarbon group having 10 to 26 carbon atoms, R ² is a hydrocarbon group having 9 to 25 carbon atoms, and X is
-(CH ₂ ) _n- (where n represents an integer of 2 to 6)]

[0009]

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(Wherein, R ³ and R ⁴ are the same or different and each represent a hydrocarbon group which may be hydroxylated having 1 to 40 carbon atoms, and R ⁵ represents an alkylene group having 1 to 6 carbon atoms or R ⁶ represents a hydrogen atom, an alkoxy group having 1 to 12 carbon atoms or a 2,3-dihydroxypropyloxy group, provided that when R ⁵ is a single bond, R ⁶ is a hydrogen atom.

In the above formulas (1) and (2), the hydrocarbon group is preferably an alkyl group or an alkenyl group.

One or more ceramides of component (A) can be used, and 0.001 to 20% by weight in the total composition.
Especially 0.005 to 10% by weight, further 0.01 to 5% by weight
Mixing is preferred in terms of moisturizing effect and feeling of use.

The pectin of the component (B) is a high molecular compound in which D-galacturonic acid and its methyl ester are linearly linked by α-1,4 bonds, and can be obtained by extracting from various plants. Pectins having various degrees of methyl esterification can be used.
Any of the above HM pectin and less than 50% LM pectin may be used. As such pectin, for example, GENU
pectin type YM-100, GENU pectin type JM-LMS, HM-D
GENU HM pectin such as D-slow set (above, manufactured by Hercules); GENU pectin type LM-104AS, GENU pect
G such as in type LM-101AS, GENU pectin type LM-18 CG-Z
ENU LM pectin (all from Hercules); other classic AF501, 504, 701, AM201, CF501, CM20
1, AB901 (Dai Nippon Pharmaceutical Co., Ltd.), GrinsteadTM
Commercially available products such as Pectin USP (manufactured by Nippon Danisco Ingredients) and Neosoft P-3 (manufactured by Taiyo Kagaku) can be suitably used.

One or more of these pectins can be used, and 0.01 to 2% by weight, particularly 0.0
It is preferable to mix 5 to 1% by weight, more preferably 0.1 to 0.5% by weight, in order to achieve an appropriate thickening and to provide a feeling of use and appearance.

The emulsified cosmetic composition of the present invention can further contain (C) a polyvalent metal salt, exhibit a suitable thickening behavior in the coexistence with the pectin, and further enhance the stability of the emulsion. The polyvalent metal salt includes a divalent or trivalent metal salt, and a salt of a divalent metal such as calcium, iron, magnesium, and zinc is preferable. Specifically, for example, calcium acetate, calcium phosphate, calcium chloride, calcium citrate, calcium dihydrogen phosphate, calcium formate, calcium gluconate, calcium glycerophosphate, calcium glutamate, calcium monohydrogen phosphate, calcium hydroxide, calcium iodide , Calcium lactate, calcium carbonate, calcium propionate, calcium tetraphosphate, iron acetate, iron chloride, iron citrate, iron formate, iron lactate,
Examples include magnesium sulfate, magnesium chloride, magnesium lactate, magnesium carbonate, magnesium phosphate, magnesium propionate, zinc carbonate, zinc chloride, zinc monohydrogen phosphate, zinc lactate, zinc chloride, zinc formate, zinc tartrate and the like. Of these, calcium salts such as calcium chloride, calcium citrate, calcium lactate, calcium carbonate, calcium phosphate and calcium propionate; and magnesium salts such as magnesium sulfate and magnesium chloride are particularly preferred.

One or more of these polyvalent metal salts can be used, and the amount of the pectin as component (B) is
It is preferable to add 0.1 to 50% by weight, particularly 1 to 30% by weight in view of stability, appearance and feeling of use of the emulsified system.

In the emulsified cosmetic of the present invention, a liquid oil is used in order to stably blend the ceramides of the component (A).
The liquid oil is a liquid oil that is fluid at 25 ° C.
It is not limited as long as it is generally used for cosmetics and the like, and examples thereof include hydrocarbons such as squalane and liquid paraffin; higher fatty acids such as linolenic acid, oleic acid and isostearic acid;
Higher alcohols such as isostearyl alcohol, octyldodecanol, heptylundecanol, oleyl alcohol, decyltetradecanol; eicosanyl propionate, polyoxyethylene propionate (2) myristyl ether, isodecyl pivalate, isostearyl pivalate, capron Methyl octylate, isocetyl octanoate, isostearyl octanoate, octyldodecyl dimethyloctanoate, hexyldecyl dimethyloctanoate,
Methyl pelargonate, ethyl pelargonate, isobutyl pelargonate, octyl pelargonate, octyl isoperargonate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, methyl laurate, ethyl laurate, isohexyl laurate, isodecyl laurate, laurin Isostearyl acid, methyl myristate, isopropyl myristate, butyl myristate, octyl myristate, decyl myristate, oleyl myristate, isostearyl myristate, isocetyl myristate, isotridecyl myristate, octyldodecyl myristate, polyoxy myristate Ethylene (3) myristyl ether, ethyl palmitate, isopropyl palmitate, octyl palmitate, palmi Phosphate lauryl, isostearyl palmitate, isocetyl palmitate, retinol palmitate, octyl isopalmitate, ethyl stearate, octyl stearate, isocetyl stearate,
Isopropyl isostearate, butyl isostearate, hexyl isostearate, myristyl isostearate, lauryl isostearate, isostearyl isostearate, isosetyl isostearate, batyl isostearate, polypropylene glycol isostearate (2), ethyl oleate, isopropyl oleate, olein Decyl acid, isodecyl oleate, octyl dodecyl oleate, stearyl oleate, cetyl oleate, ethylene glycol oleate, ethyl linoleate, isopropyl linoleate, oleyl linoleate, DL-α-tocopherol linoleate, ethyl linolenate, arachidone Ethyl acid, oleyl erucate, erucyl erucate, stearyl erucate, isostearyl erucate, erucic acid Octyldodecyl, methyl ricinoleate, cetyl ricinoleate, butyl acetylricinoleate, octyl oxystearate, octyldodecyl 12-stearoyloxystearate, glyceryl trioctanoate, glyceryl tricaprylate, glyceryl tricaprate, glyceryl triisostearate, triacetyl ricinol Glyceryl acid, glyceryl tri (caprylate / caprate), glyceryl monoisostearate, glyceryl monomyristate, diglyceryl tetraisostearate, trimethylolpropane triisostearate, propylene glycol dicaprate, propylene glycol dinonanoate, neopentyl glycol dicaprate, maleic acid Dioctyl acid, diisostearyl malate, diisopropyl adipate, Pin dibutyl, adipic acid diisobutyl, dihexyl adipic acid,
Dioctyl adipate, diethyl sebacate, dioctyl sebacate, dioctyl dodecyl lauryl glutamate, dioctyl dodecyl stearoyl glutamate,
Ester oils such as polyoxypropylene (10) cetyl ether, octyl methoxycinnamate, octyl dodecyl lactate, isostearyl lactate, oleyl lactate, and octyl paradimethylaminobenzoate. Of these, preferred are hydrocarbons such as squalane and liquid paraffin, triglyceryls such as glyceryl trioctanoate, diglyceryls such as glyceryl monoisostearate and the like, and branched ester oils such as neopentyl glycol dicaprate and isotridecyl isononanoate.

One or more of these liquid oils can be used, and 0.1 to 20% by weight, especially 0.1 to
It is preferable to add 15% by weight, more preferably 0.1 to 10% by weight.

In addition, solid oils other than liquid oils can be blended, and examples thereof include higher alcohols such as stearyl alcohol and cetanol; higher fatty acids such as stearic acid and palmitic acid; cholesterol and cholesterol fatty acid esters. When these solid oils are blended, 0.01 to 10% by weight, especially 0.1 to 4% by weight in the total composition.
It is preferable to mix by weight%. Further, in the present invention,
It is preferable that water is contained in the composition in an amount of 30 to 95% by weight, particularly 40 to 90% by weight.

The emulsified cosmetic composition of the present invention preferably further contains (D) a nonionic surfactant in terms of stability and feeling of use. Examples of the nonionic surfactant include polyoxyethylene castor oil, polyoxyethylene hardened castor oil and derivatives thereof; polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tetraoleate. Polyoxyethylene glycol fatty acid esters such as polyoxyethylene glyceryl monoisostearate and polyoxyethylene glyceryl triisostearate; polyoxyethylene hexyl decyl ether, polyoxyethylene octyl dodecyl ether, polyoxyethylene lauryl ether, polyoxyethylene Polyoxyethylene alkyl ethers such as cetyl ether, polyoxyethylene stearyl ether, and polyoxyethylene nonylphenyl ether; In addition to polyoxyethylene-added surfactants such as Le, polyglycerol alkyl ethers, polyglycerol fatty acid esters, sucrose fatty acid esters.

One or more of these nonionic surfactants can be used, and 0.05 to 30% by weight, particularly 0.05 to 10% by weight, more preferably 0.1 to 5% by weight in the total composition. It is preferable to mix them. The nonionic surfactant (D) is used in an amount of 0.01 to 1 based on the total amount of the oily component, that is, the ceramides of the component (A) and the liquid oil or other oily component.
It is preferable to mix 0 times by weight, especially 0.1 to 3 times by weight. Salts and surfactants other than those described above can also be used as long as the effects of the present invention are not impaired.

The emulsified cosmetic composition of the present invention further comprises components used in ordinary cosmetic compositions such as ethylene glycol, polyethylene glycol, propylene glycol, 1,3-
Polyhydric alcohols such as butylene glycol, 1,4-butylene glycol, dipropylene glycol, glycerin, diglycerin, triglycerin, and tetraglycerin;
Glucose, maltitol, sucrose, glucose, xylitol, sorbitol, maltotriose, threitol, erythritol, polyoxyethylene methyl glucoside, saccharides such as trehalose; hydroxymethyl cellulose, hydroxyethyl cellulose, Labor gum,
Nonionic polymers such as guar gum and locust bean gum; powders, vitamins, whitening agents, ultraviolet absorbers, blood circulation promoters, sebum suppressants, astringents, emollients, metal chelators, acids, bases, antioxidants Agents, pigments, fragrances and the like can be appropriately compounded.

The emulsified cosmetic of the present invention can be produced by a usual method, and can be various creamy or milky cosmetics.

[0024]

The emulsified cosmetic of the present invention does not have a high viscosity, especially at high temperatures, has excellent stability, and has a good feeling in use.

[0025]

EXAMPLES Example 1 Emulsified cosmetics having the compositions shown in Tables 1 to 4 were produced,
Stability and usability were evaluated. The results are shown in Tables 1 to 4.

(Preparation method) The components (1) to (12) are heated and dissolved at 80 to 90 ° C., mixed with water heated to the same temperature dropwise, and cooled to room temperature to obtain an emulsion. . To this, a solution obtained by uniformly dissolving the components (13) to (28) at 80 ° C was added to obtain an emulsified cosmetic.

(Evaluation method) (1) Form: The form of each emulsified cosmetic was visually determined.

(2) Stability: Each emulsified cosmetic was prepared at 50 ° C. for 2 hours.
The state after storage for a week was visually determined.

(3) Feeling of use: The feeling when each emulsified cosmetic was used was sensory evaluated by five expert panelists. 4 or more panelists rated “good”, 3 panelists “△”, 2 panelists or less “x”
As shown.

[0030]

[Table 1]

[0031]

[Table 2]

[0032]

[Table 3]

[0033]

[Table 4]

From the results shown in Tables 1 to 4, all of the products of the present invention were excellent in stability even at a high temperature, and had good feeling in use.

Example 2 A cream having the following composition was produced in the same manner as in Example 1. The resulting cream had excellent stability even at high temperatures, and had a good feeling in use.

[0036]

Table 5 (Components) (% by weight) Polyoxyethylene triisostearate hydrogenated castor oil (60EO) 2 amide derivative (in the formula (1), R ¹ = C ₁₆ H ₃₃ , R ² = C ₁₅ H ₃₁ , n = 2) 3 Isotridecyl isononanoate 4 Diglyceryl monoisostearate monomyristate 2 Stearic acid 1 Palmitic acid 1 Cetanol 0.5 Stearyl alcohol 0.5 Citric acid 0.2 Sodium citrate 0.5 Calcium chloride 0.05 Pectin (GENU pectin type LM-104AS, manufactured by Hercules) 0.5 86% glycerin 20 water balance

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AB051 AB102 AB282 AB352 AC022 AC102 AC122 AC182 AC302 AC342 AC422 AC432 AC442 AC641 AC642 AD092 AD371 AD372 AD572 BB04 BB13 CC02 DD31 EE01 EE12

Claims (3)

[Claims] 1. An emulsified cosmetic containing (A) ceramides, (B) pectin, liquid oil and water. 2. The emulsified cosmetic according to claim 1, further comprising (C) a polyvalent metal salt. 3. The emulsified cosmetic according to claim 1, further comprising (D) a nonionic surfactant.