JPH08268837A - Emulsion-type composition - Google Patents

Abstract

PURPOSE: To obtain an emulsion-type composition excellent in affinity for the skin, humectancy and use feeling, comprising a vegetable liquid oil, emulsifier, plant extract containing a phenol derivative and/or a pyran derivative, and aqueous phase component. CONSTITUTION: This emulsion-type composition comprises 1-30wt.% of a vegetable liquid oil as oily component (e.g., phytosqualane), 0.5-5wt.% of an emulsifier (e.g., lecithin-decaglycerol monostearate), 0.01-10wt.% of a plant extract containing a phenol derivative and/or a pyran derivative, and an aqueous phase component (e.g., ethylene glycol). The plant extract is obtained by subjecting a source plant selected from Geranium thunbergii, Sanguisorba officinalis L., aloe, Scutellaria baicalensis Georg., etc., to extraction using a solvent. The composition is prepared in the form of cream, ointment or milky lotion and can be used as a cosmetic, base for medicines for external use. The composition is capable of improving dermal symptoms such as skin chapping and pruritus caused by drying, being excellent in safety and stability.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention contains at least one vegetable extract containing a vegetable liquid oil, an emulsifier and an aqueous phase component, and a phenol derivative and / or a pyran derivative, and is an emulsified product such as a cosmetic. The present invention relates to an emulsified composition that can be effectively used as.

[0002]

2. Description of the Related Art Most conventional emulsion type compositions contain an oil phase raw material such as liquid paraffin, petrolatum, synthetic ester and lanolin derivative, and an aqueous phase raw material such as polyhydric alcohol and water.
An anionic surfactant or a nonionic surfactant having a polyoxyethylene chain is used as an emulsifier and emulsified. However, these synthetic systems, oils such as mineral oils, and emulsion type compositions utilizing synthetic surfactants are
Due to the various ingredients contained in them, they generally have a drawback that they are easily irritated, and the feeling of use such as skin familiarity and moisturizing effect is not sufficiently satisfactory.

Recently, from the viewpoint of safety to the living body, natural materials, for example, natural emulsifiers have become more and more popular, and emulsion type compositions using natural emulsifiers such as lecithin and saponin have been actively developed. For example, a combination of lecithin and a polyhydric alcohol fatty acid ester (JP-A-58-12).
1209), a combination of lecithin and protein (JP-A-59-1404), an emulsified cosmetic composition comprising lecithin, sucrose fatty acid ester, lower monohydric alcohol, water-soluble polyhydric alcohol, oil and water ( JP-A-62-1
No. 75414), a combination of hydrogenated lecithin and saponin (JP-A-1-176442), an emulsifier composed of lecithin, N-long chain acylamino acid soap and higher alcohol (Japanese Patent Publication No. 25535/1993). Gazette)
Etc. are proposed. However, since the emulsifying ability of natural emulsifiers is not very strong, it has been difficult to stably emulsify vegetable oils in particular. Moreover, the compositions using these do not fully satisfy all of safety, feeling of use, price, stability and the like.

[0004]

DISCLOSURE OF THE INVENTION The present invention uses a specific natural raw material as an active ingredient and has excellent affinity to skin and excellent moisturizing effect, and particularly improves the condition on skin due to dryness such as rough skin and itch. In addition, it is an object of the present invention to provide an emulsion type composition having no problem in safety and stability.

[0005]

According to the present invention, in an emulsion type composition containing a vegetable liquid oil as an oil component, at least one plant extract containing an emulsifier, a phenol derivative and / or a pyran derivative, and Provided is an emulsion type composition characterized by being mixed with an aqueous phase component, and in particular, the plant extract is genopsis, waremoko, mandarin orange, eucalyptus, cha, enjo, rosemary, salvia, clove, mulberry, kayga, Touki, Dokudami, button, Japanese cypress, Fu, Goshuyu, Nepenthes,
Burdock, licorice, peony, kei, loquat, red sea bream, yarrow, chamomile, areca,
Arnica, white birch, Bombyx mori, Eleuthero, marjoram, cowberry, an emulsion type composition characterized by being an extract from a plant selected from aloe, and in particular, the emulsifier, at least part thereof The emulsified composition is characterized by containing lecithin.

Each component of the emulsion type composition of the present invention will be described in detail below. Specific examples of the vegetable liquid oil that is the oil component of the emulsion composition of the present invention include jojoba oil, avocado oil, olive oil, apricot kernel oil, evening primrose oil, grape seed oil, southern oil, safflower oil, almond oil, Tri- (capryl-capsone) separated from corn germ oil, sunflower oil, macadamian nut oil, meadow home oil, palm oil, palm oil and squalene hydrogenated from squalene separated and extracted from palm oil and olive oil. Acid) glycerin and the like. The content thereof is 1 to 30% by weight, preferably 5 to 20% by weight of the emulsion composition. Further, when 50% by weight or more of the vegetable oil component is made into a vegetable squalane which is a hydrocarbon component, the feeling of use and the stability are improved.

As an emulsifier to be added to the emulsion composition of the present invention, it is needless to say that anionic surfactants and nonionic surfactants used in conventional emulsion compositions can be used. From the viewpoint of stability and skin safety, it is particularly preferable to use lecithin as at least a part of the emulsifier. Further, in the present invention, when lecithin is used as at least part of the emulsifier, it is preferable to use polyglycerin fatty acid ester, glucose fatty acid ester, and alkyl glucoside fatty acid ester together for the purpose of reinforcing the emulsifying ability.

Lecithin used as an emulsifier in the present invention includes soybean, rapeseed, sunflower, safflower, cottonseed,
In addition to plant lecithin and egg yolk lecithin obtained from seeds of corn, flaxseed, sesame, olive, rice, palm and palm, hydrogenated products of the lecithin are also included.

As the polyglycerin fatty acid ester, it is preferable to use a compound represented by the following general formula (I).

Embedded image (In the formula, R ₁ , R ₂ , R ₃ , R ₄ and R ₅ represent a hydrogen atom or an acyl group and may be the same or different from each other. N is 2
~ Represents an integer of 8. ) Specific examples of the polyglycerin fatty acid ester include decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monolinoleate,
Examples thereof include decaglyceryl monoisostearate, decaglyceryl dioleate, decaglyceryl diisostearate, hexaglyceryl monolaurate, and hexaglyceryl monomyristate, and those having HLB of 10 or more are preferable.

Further, as glycol fatty acid ester,
Those obtained from glucose and a fatty acid derivative having 4 to 20 carbon atoms, preferably 8 to 18 carbon atoms or a lower alkyl ester thereof are preferable, and specific examples thereof include glucose-6-capryl monoester and glucose-6-.
Decane monoester, glucose-6-lauryl monoester, glucose-6-myristyl monoester, glucose-6-palmityl monoester, glucose-
Examples thereof include 6-oleyl monoester and glucose-6-γ-linoleate monoester.

Furthermore, as the alkyl glucoside fatty acid ester, an alkyl glucoside and a carbon number of 4 to 20,
Those obtained from fatty acid derivatives of 8 to 18 fatty acids or lower alkyl esters thereof are preferable, and specific examples thereof include 1-methyl-6-capryl glucose, 1-ethyl-6-capryl glucose, 1-ethyl. -6-lauryl glucose, 1-butyl-6-capryl glucose, 1-ethyl-6-palmityl glucose,
1-Ethyl-6-oleyl glucose and the like can be mentioned.

The blending amount of these emulsifiers is preferably 0.5 to 5% by weight, more preferably 1 to 3% by weight, based on the whole emulsion type composition.

The plant extract containing the phenol derivative and / or the pyran derivative used in the present invention includes:
As a source plant, for example, Ganoderma lucidum, Pleurotus cornucopiae,
Mandarin orange, Eucalyptus, Cha, Enju, Rosemary, Salvia, Clove, Urushi, Kaigai, Touki, Dokudami, Button, Honoki, Fuu, Goshue, Nepenthesa, Burdock, Licorice, Peony, Kei, Loquat, Daido, Achillea, Chamomile, It is obtained by extracting and purifying using areca, arnica, white birch, boletus edulis, eleuthero, majuram, cowberry, aloe and the like.

As the plant extract containing a phenol derivative used in the present invention, a tannin-containing extract obtained by using, as a source plant, ginger ginger, valerian, eucalyptus, tea, chamomile, etc. is also used in the present invention. As the plant extract containing the pyran derivative, a flavonoid-containing extract using aloe, sorghum, licorice, hemlock, etc. is particularly preferable as the source plant. In most cases, these extracts simultaneously contain both the phenol derivative and the pyran derivative.

No particular limitation is imposed on the method for extracting and purifying these plant extracts.
Above-ground parts, fruits, subterranean parts, tree trunk parts and the like raw or dried water-soluble solvents such as water, lower alcohols such as methanol, ethanol, propylene glycol, 1,3-butylene glycol, Extraction is performed using a solvent in which polyhydric alcohols such as glycerin and the like are used alone or in a mixture, and then aged at a low temperature as necessary, filtered,
Purification such as removal of volatile components by heating is performed, and the obtained extract can be used as it is, or as a concentrate or a dry powder. These extracts may be used alone or in combination.

The blending amount of these plant extract components varies depending on the effective content in the components, but is 0.01 to
A suitable picture is 10% by weight, preferably 0.05 to 5% by weight.

Further, as the aqueous phase component of the present invention, ethylene glycol, propylene glycol, 1.3-butylene glycol, dipropylene glycol, glycerin,
Polyhydric alcohols such as diglycerin, pentaerythritol, and sorbitol, lower alcohols such as ethyl alcohol and propyl alcohol, and water can be used.

In the emulsion composition of the present invention, if necessary, higher alcohols such as cetyl alcohol, cetostearyl alcohol, stearyl alcohol, oleyl alcohol and behenyl alcohol, lauric acid, myristic acid,
Oily substances that are commonly used in cosmetics and pharmaceutical bases such as higher fatty acids such as palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, ricinoleic acid and isostearic acid can be added. In addition, medicinal ingredients such as vitamins, ultraviolet absorbers, antioxidants, astringents,
Ingredients commonly used in cosmetics and pharmaceuticals such as preservatives, fragrances, and coloring agents can be added.

[0019]

EXAMPLES The present invention will be specifically described below based on Examples and Comparative Examples. The amount used is based on weight.

Examples 1 and 2 and Comparative Examples 1 to 5 Vegetable squalane, jojoba oil, hydrogenated lecithin, decaglyceryl monostearate and stearyl alcohol were mixed in a weight ratio shown in Table 1, and the mixture was heated to 80 ° C. Warmed and stirred to make a uniform solution. To this liquid, which is well stirred,
A uniform mixture of glycerin, a plant extract and purified water having a weight ratio shown in (4) was heated to 80 ° C. and added, and after the addition was completed, the mixture was further sufficiently stirred to be emulsified and then cooled to room temperature. The stability of the emulsified composition obtained as described above was evaluated, and the ease of blending into the skin, the feeling of moistness and the presence of itchiness, etc. were evaluated by five panelists who had dryness and itchiness on the hands and feet. Sensory evaluation was performed. Table 1 shows the results.
The stability was evaluated by observing the state after standing at 50 ° C. for 1 month to see if water and oil were separated. The sensory evaluation was ranked as follows according to the panelists' opinions. ○ Good △ Somewhat bad × Poor [As Example 3, please add an example (using only lecithin) from Example 1 or 2 excluding decaglycerin monostearate. ]

[0021]

[Table 1]

Example 4 Vegetable Squalane 5.0 Jojoba Oil 5.0 Hydrogenated Lecithin 1.0 Decaglyceryl Monomyristate 1.0 Loquat Extract 4.0 Behenyl Alcohol 0.5 Glycerin 8.0 Glycyrrhetinic Acid 0.1 Methylparaben 0 .1 Purified water balance The same procedure as in Example 1 was carried out to obtain an emulsified composition having the above composition.
The composition was creamy and had a feeling of use as good as that of Example 1 and exhibited excellent stability.

Example 5 Vegetable Squalane 4.0 Macadamian Nut Oil, 4.0 Hydrogenated Lecithin 1.0 Glucose-6-palmityl Monoester 0.5 Aloe Extract 1.0 Behenyl Alcohol 0.5 Glycerin 7.0 Glycyrrhetinic acid 0.1 Methylparaben 0.1 Carboxyvinyl polymer 0.2 Triisopropanolamine 0.25 Purified water balance The same procedure as in Example 1 was carried out to obtain an emulsion composition having the above composition.
The composition was a milky liquid and had a feeling of use as good as that of Example 1 and exhibited excellent stability.

Example 6 Vegetable squalane 6.0 Jojoba oil 2.0 Sunflower oil 2.0 Hydrogenated lecithin 1.5 1-Ethyl-6-lauryl glucose 1.0 Loquat extract 1.0 Button extract 0.5 Cetostearyl Alcohol 4.5 Glycerin 7.0 Methylparaben 0.1 Carboxyvinyl polymer 0.1 Triisopropanolamine 0.2 Purified water Residue The emulsion composition having the above composition was obtained in the same manner as in Example 1.
The composition was creamy and had a feeling of use as good as that of Example 1 and exhibited excellent stability.

[0025]

The emulsion-type composition of the present invention comprises a vegetable oil,
Since it is a combination of a plant extract containing an emulsifier, an aqueous phase component and a phenol derivative and / or a pyran derivative, it has an excellent affinity to the skin, a high moisturizing effect, a feeling of use, emulsion stability, and skin. It is superior to conventional products in all aspects of safety against. Further, by using an emulsifier containing at least a part of lecithin obtained from a natural material as the emulsifier, instead of a synthetic surfactant, the effect is further enhanced. Then, the composition is changed by changing the raw materials and the mixing ratio of the raw materials.
Since it is possible to obtain a composition in the form of cream, ointment or emulsion, it is preferably used as a base for cosmetics and external medicines.

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Claims (3)

[Claims] 1. An emulsified composition containing a vegetable liquid oil as an oil component, wherein at least one plant extract containing an emulsifier, a phenol derivative and / or a pyran derivative, and an aqueous phase component are blended. Emulsified composition. 2. The plant extract is gem ginger, oleander, mandarin orange, eucalyptus, tea, sage, rosemary, salvia, clove, gall, eagle, kayga, touki, dokudami, button, alder, fuu, goshuyu, hemlock, burdock, burdock, 2. An extract from a plant selected from licorice, peony, kei, loquat, daidai, yarrow, camouflage, areca, arnica, birch, vomitula, eleuthero, marjoram, cowberry and aloe. Emulsion type composition. 3. The emulsion-type composition according to claim 1, wherein the emulsifier contains lecithin in at least a part thereof.