JPH10167950A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic containing a specific glyceryl ether, having both high moisture retainability and simple touch free from tackiness, and especially effective for glycerol-compounded cosmetics. SOLUTION: This cosmetic contains (A) 1-50wt.% of a glyceryl ether of the formula I [R<1> -R<3> are each a 1-4C linear or branched alkyl ; (l), (m) and (n) are each such 1-10 as satisfying the inequality: (l)+(m)+(n)>= (the total carbon number of R<1> -R<3> ), if necessary, (B) 0.1-20wt.% of glycerol and (C) 0.01-5wt.% of a silicone oil. The component A is preferably compounded in an amount of 0.1-10 fold-weight that of the component B. The shape of the cosmetic may be either of an aqueous cosmetic, a water-in-oil type or oil-in- water type emulsion cosmetic, and an oily cosmetic, and the kind of the cosmetic may be a skin cosmetic such as a pack, a foundation, a lotion or a skin cleanser or a hair cosmetic such as a shampoo, a treatment or a hair-dressing agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic having both high moisturizing properties and a non-sticky and refreshing feel. More specifically, the present invention relates to a glycerin-containing cosmetic, in particular, to a cosmetic having a good light feeling in use while reducing the sticky feeling peculiar to glycerin while maintaining high moisture retention.

[0002]

2. Description of the Related Art In recent years, there has been a tendency for cosmetics to have a lighter feel, and to have a lighter feel and a better moisturizing effect than oily cosmetics having a strong oily feeling or creams having a large sticky feeling. Fees are required.

[0003] However, although various moisturizing agents and the like have been studied to meet such demands, cosmetics that sufficiently satisfy both a refreshing feel and a moisturizing effect have not yet been obtained.

[0004] For example, glycerin is a safe and inexpensive humectant obtained from nature, and has been widely used in various fields from cosmetics such as lotions, emulsions, creams, and even detergents. ing. However, cosmetics containing a high concentration of glycerin to impart high moisturizing properties have a large sticky feeling, especially when dried, and have been unsatisfactory for those who desire a refreshing feel. On the other hand, polyols such as dipropylene glycol (DPG) and 1,3-butylene glycol (1,3-BG), which are generally used to enhance the incorporation of glycerin, are inferior to glycerin but have a moderate moisture retention. And has a less sticky feel when dry than glycerin. However, these polyols also did not have sufficient moisturizing properties when used alone, and when used in combination with glycerin, could not improve the sticky feeling derived from glycerin.

[0005] On the other hand, as a method of reducing the sticky feeling of glycerin, a small amount of silicone oil is blended in the fields of cosmetics and emulsions. However, since silicone oil does not dissolve in water, it is necessary to use an emulsifier such as a surfactant in order to stably blend it, and it is inevitable that the appearance of aqueous cosmetics becomes opaque. Further, under conditions of high temperature and high humidity such as in summer, the effect of suppressing the sticky feeling was not sufficient.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cosmetic having both high moisturizing properties and a refreshing feel without stickiness. In particular, it is an object of the present invention to provide a glycerin-containing cosmetic having a good light feeling in use while reducing the sticky feeling peculiar to glycerin while maintaining high moisture retention.

[0007]

Under these circumstances, the present inventors have conducted intensive studies and as a result, have found that glyceryl ether represented by the following general formula (1) has a light touch without stickiness, and is free from water. They have found that they have excellent moisturizing properties together with mixing, and that they can reduce the sticky feeling of glycerin when blended with glycerin, thus completing the present invention.

That is, the present invention provides the following general formula (1)

[0009]

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[Wherein, R ¹ , R ² and R ³ are the same or different and represent a linear or branched alkyl group having 1 to 4 carbon atoms;
l, m and n represent the same or different 1 to 10 numbers such that l + m + n ≧ (total carbon number of R ¹ , R ² and R ³ ). ]
A cosmetic comprising the glyceryl ether represented by the formula:

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the general formula (1), examples of the linear or branched alkyl group having 1 to 4 carbon atoms represented by R ¹ , R ² and R ³ include a methyl group, an ethyl group and an n-propyl group. Groups, an isopropyl group, an n-butyl group, a sec-butyl group, and a tert-butyl group. Among them, an ethyl group and an isopropyl group are preferable. R ¹ , R ² and R ³ may be the same or different from each other, but are preferably the same group.
The alkyl groups of R ¹ , R ² and R ^{3 have} 1 to 4 carbon atoms.
When the number of carbon atoms of the alkyl group is 5 or more, the hydrophilicity is reduced, the property as a surfactant is increased, and the irritation to the skin is increased. The total number of carbon atoms of R ¹ , R ² and R ³ is 3 to 12
Can be taken, but is preferably in the range of 4 to 12, particularly preferably in the range of 4 to 6 from the viewpoint of the mixability of the oily component.

In the general formula (1), l, m and n each represent a number of 1 to 10, and a total of 4 to 20, more preferably 6 to 16, and especially 6 to 10 Is preferable. As the sum of l, m, and n is smaller, the melting point and viscosity are lower, and the feeling is preferable, but on the other hand, hydrophilicity is reduced,
Not only the solubility in water decreases, but also the vapor pressure increases with the decrease in the molecular weight, which causes safety problems such as a decrease in the flash point. On the other hand, when the sum of l, m, and n increases, the hydrophilicity increases, but on the contrary, the melting point increases and the viscosity also increases, so that the usability decreases. l, m and n may be the same or different from each other, but are more preferably the same. The relationship between l, m and n and R ¹ , R ² and R ³ needs to satisfy l + m + n ≧ (total carbon number of R ¹ , R ² and R ³ ). Excellent in hydrophilic-hydrophobic balance and good feel.

Specific examples of the glyceryl ether (1) include the following compounds.

[0014]

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The amount of glyceryl ether (1) to be added to the cosmetic of the present invention can be appropriately selected according to the purpose of the cosmetic, and is not particularly limited. 1-30% by weight is preferred. If the amount is less than 1% by weight, a sufficient effect of improving the feel cannot be obtained, and if it exceeds 50% by weight, the moist feeling becomes insufficient although the refreshing feeling is excellent.

Further, by blending glycerin together with glyceryl ether (1) in the cosmetic of the present invention, a cosmetic having a good feeling of use with reduced stickiness peculiar to glycerin while maintaining a high moisturizing property of glycerin. Is obtained. In this case, glycerin is present in the cosmetic of the present invention at 0.1%.
~ 20% by weight, particularly preferably 1-10% by weight,
Also, glyceryl ether (1) is added to glycerin in 0.1
It is preferable that the compounding amount be 10 to 10 times by weight, particularly 1 to 5 times by weight. If the glyceryl ether (1) is less than 0.1 times the weight of glycerin, a sufficient effect of improving the feeling cannot be obtained, and if it exceeds 10 times the weight, the moisturizing action of the glycerin itself cannot be sufficiently exerted.

Further, by adding silicone oil to the cosmetic composition of the present invention, a cosmetic composition with a reduced stickiness and a refreshing feeling can be obtained. Such silicone oil is not particularly limited, but those having a viscosity of about 50 cs or less can be suitably used. This is because, as the viscosity becomes higher, the oil becomes more oily to the touch as a result of using a larger amount thereof, which is not preferable in terms of usability. As specific examples, one or two or more of these may be used as needed, such as low-polymerization degree chain silicones such as dimethylpolysiloxane and methylphenylpolysiloxane, octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane. It can be appropriately selected and used. Silicone oil is
It is preferable to add 0.01 to 5% by weight, particularly 0.1 to 1% by weight in the cosmetic of the present invention.

The form of the cosmetic of the present invention is not particularly limited.
Any of an aqueous cosmetic, a water-in-oil type or an oil-in-water emulsified cosmetic, and an oily cosmetic may be used. The type of the cosmetic of the present invention is not particularly limited, for example, pack, foundation, lipstick, lotion, cold cream, hand cream, skin cleanser, softening cosmetic, nutritional cosmetic, astringent cosmetic, whitening cosmetic, Anti-wrinkle cosmetics, anti-aging cosmetics,
Skin cosmetics such as cleaning cosmetics; and hair cosmetics such as shampoos, rinses, treatments, hair styling agents, and hair tonics.

In the cosmetic of the present invention, other components generally used as cosmetic components are appropriately compounded according to the form and type of the above-mentioned cosmetic, as long as the effects of the present invention are not impaired. be able to. Examples of such cosmetic ingredients include extenders such as mica, talc, sericite, kaolin, nylon powder, polymethylsilsesquioxane, and barium sulfate; inorganic pigments such as titanium oxide, zinc oxide, and iron oxide; Powder that has been subjected to surface hydrophobic treatment such as silicone treatment, metal soap treatment, N-acylglutamic acid treatment, etc .; hydrocarbons such as solid or liquid paraffin, solid paraffin, microcrystalline wax, vaseline, ceresin, ozokerite, montan wax, etc. Vegetable oils such as olive, ground wax, carnauba wax, lanolin, whale wax, animal fats or waxes; stearic acid, palmitic acid, oleic acid, glycerin monostearate, glycerin distearate, glycerin monooleate; , Isopropyl myristi Ester, isopropyl stearate, fatty acids or esters such as butyl stearate;
Alcohols such as ethyl alcohol, isopropyl alcohol, cetyl alcohol, stearyl alcohol, palmityl alcohol, and hexyl decyl alcohol; polyhydric alcohols having a moisturizing effect such as glycol and sorbitol; whitening agents, analgesics and antiphlogistics, antipruritics, and disinfection Agent,
Pharmaceutical ingredients such as astringents, emollients, hormones, etc .; water; surfactants; W / O or O / W type emulsifiers; silicone oils such as polyether-modified silicone, polyether-alkyl-modified silicone, glyceryl ether-modified silicone Emulsifiers; thickeners such as methylcellulose, ethylcellulose, carboxymethylcellulose, polyacrylic acid, tragacanth, agar, and gelatin; other emulsifiers, chelating agents, ultraviolet protective agents, pH adjusters, preservatives, pigments, and fragrances And the like.

[0020]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto.

Test Example 1 Compound (a) shown as a specific example of glyceryl ether (1)
About (e), the solubility in water, the usability | use_condition, and skin irritation were evaluated by the method shown below. Table 1 shows the results.

<Water solubility> The solubility of each compound in water at 25 ° C. was visually determined. ：: freely dissolved in 100 parts by weight or more with respect to 100 parts by weight of water. ：: Dissolves at least 10 parts by weight and less than 100 parts by weight with respect to 100 parts by weight of water. Δ: Less than 10 parts by weight dissolved in 100 parts by weight of water.

<Feeling of use> The feeling of use was evaluated by 10 expert panelists using a mixture of 3 parts by weight of each compound and 7 parts by weight of water. The evaluation was based on a comprehensive evaluation of familiarity with the skin, lack of oiliness, low stickiness, and moist feeling. ◎: 8 or more of 10 respondents are good ○: 6 to 7 of 10 respondents are good △: 4 to 5 of 10 respondents are good ×: 3 or less of 10 respondents are good

<Skin irritation> A mixture of 3 parts by weight of each compound and 7 parts by weight of water was added to 5 guinea pigs once a day.
The composition was applied directly for 4 consecutive days, and the skin condition was evaluated on the following day as the average of 5 animals on the following day. ◎: No abnormality at all-slight redness ○: Slight redness-redness △: Redness-redness and papules ×: Redness and papules occur in almost all animals

[0025]

[Table 1]

Examples 1 to 6 and Comparative Examples 1 to 4 A lotion having the composition shown in the following Table 2 was produced, and its practical test and evaluation of the effect of improving and preventing skin roughness were performed by the following methods. . Table 2 shows the results.

<Test Method> (1) Practical test (panel test) Practical evaluation was conducted by actually using each cream by 10 expert panelists. The evaluation items were four items of non-stickiness upon drying, non-stickiness after drying, refreshing feeling, and overall evaluation, and were evaluated according to the following criteria. ◎: 8 or more of 10 respondents are good ○: 6 to 7 of 10 respondents are good △: 4 to 5 of 10 respondents are good ×: 3 or less of 10 respondents are good

(2) Rough Skin Improving Effect Ten women, aged 20 to 50, having rough skin on their cheeks in winter, were treated with different lotions on the right and left cheeks once a day.
Application was continued for days. The next day after the completion of the application for 4 days, the rough skin was observed with the naked eye, judged according to the following criteria, and indicated as an average value. 0: No rough skin 1: Slightly rough skin 2: Severe rough skin 3: Severe rough skin 4: Severe rough skin is recognized

[0029]

[Table 2]

As is clear from Table 2, the lotion of the present invention had a very excellent feeling in use and a skin care effect.

Examples 7 to 9 and Comparative Example 5 Emulsions having the compositions shown in Table 3 below were prepared and tested for practical use.
Evaluation for skin irritation was performed. Table 3 shows the results.

<Production method> According to the above formula, (5) to (7) are mixed, dissolved by heating and kept at 70 ° C. (1) to (4) and (8) to (1
Similarly, 3) is heated and mixed at 70 ° C., and the mixture of (5) to (7) is added thereto and emulsified to prepare an emulsion.

<Test Methods> (1) Practical Test Practical tests were performed in exactly the same manner and in the same manner as in Examples 1 to 6 and Comparative Examples 1 to 4.

(2) Skin irritation test A closed patch (24 hours) was applied to the upper arm of a human, and evaluated according to the following criteria. 0: No abnormalities 1: Slight redness 2: Redness 3: Redness and papules

[0035]

[Table 3]

[0036]

According to the above formula, the oil phase components were mixed, dissolved by heating and kept at 70 ° C. The water phase component was similarly heated and mixed at 70 ° C., and the oil phase was added thereto and emulsified by an emulsifier.
The emulsion was gradually cooled to obtain an emulsion.

[0038]

According to the above formulation, the oil phase components were mixed, dissolved by heating and kept at 80 ° C. The aqueous phase component was similarly heated and mixed at 80 ° C., added to the oil phase, and emulsified by an emulsifier.
The emulsion was gradually cooled to obtain a cream.

[0040]

After the oil phase components were uniformly mixed according to the above formula, the powder components were sufficiently dispersed. The aqueous phase which was completely and uniformly mixed was added thereto and emulsified by an emulsifier to obtain a two-layer liquid foundation.

[0042]

According to the above formula, the oil phase components were mixed, dissolved by heating, and kept at 80 ° C. After adding and dispersing the powder component, an aqueous phase portion uniformly mixed at 80 ° C. was added and emulsified by an emulsifier. The obtained emulsion was gradually cooled to obtain an emulsion type foundation.

[0044]

According to the above formulation, the base was heated and melted and mixed uniformly. The coloring material was added thereto, kneaded with a roll mill, and uniformly dispersed. It was melted again, flavor was added, defoamed, poured into a mold, quenched and solidified. The stick was removed from the mold, filled in a container, the appearance of the stick was adjusted, the surface was made uniform by passing through a flame, and a lipstick was obtained.

[0046]

According to the above formula, the aqueous phase components were mixed, dissolved by heating and kept at 70 ° C. The oil phase component was similarly heated and mixed at 70 ° C., added to the aqueous phase, and emulsified by an emulsifier. The powder component and the coating agent were added thereto and mixed. The emulsion was gradually cooled to obtain a pack.

[0048]

Glycerin and a dye were added to purified water and dissolved at room temperature. On the other hand, ethanol, compound (b), surfactant, ethyl paraben and fragrance were added and mixed at room temperature. This was added to the aqueous phase and filtered under stirring to obtain a lotion.

[0050]

The above components were dissolved by heating at 70 ° C. and cooled to obtain a hair tonic.

[0052]

Methyl paraben and perfume were added to purified water heated to 70 ° C. and dissolved. The remaining components heated and mixed at 70 ° C. were added thereto and emulsified. The hair was rinsed slowly.

[0054]

(1), (4), (8) and (9) were added to (5), and 70
The mixture was heated to ° C. and dissolved and mixed to obtain a composition (A). (1
Add (6) and (7) to a part of 1) and dissolve, then further (2) and (3)
Is added and mixed to obtain a composition (B). While maintaining the temperature at 70 ° C., while gradually stirring the composition (B), the composition (A) is gradually added, and after pre-emulsification, the mixture is emulsified with a homomixer. This was added with stirring to a dispersion of (11) in which (10) had been previously added and dispersed, and cooled to obtain a cream.

[0056]

A shampoo having the above formulation was produced by a conventional method.

Example 21 Rinse-in Shampoo (% by Weight) Polyoxyethylene (20) lauryl ether 10.0 Amidopropyl betaine laurate 5.0 Trimethylstearyl ammonium chloride 2.0 Silicone emulsion (BY22-029, manufactured by Dow Corning Toray) 3.0 Ethylene distearate Glycol 1.0 Compound (b) above 2.0 Water balance 100.0

A rinse-in shampoo having the above formulation was produced by a conventional method.

[0060]

A body shampoo having the above formulation was produced by a conventional method.

[0062]

According to the above formula, (1) to (6) were dissolved and mixed by heating to 70 to 80 ° C., cooled to 50 ° C., and then added (7) with stirring.

[0064]

A face wash having the above formulation was produced by a conventional method.

Each of the cosmetics obtained in Examples 10 to 24 had a refreshing feeling without stickiness, was excellent in moisturizing properties, and had little irritation to the skin.

[0067]

Industrial Applicability The cosmetic of the present invention has both high moisturizing properties and a refreshing feel without stickiness. Particularly in a glycerin-containing cosmetic, while maintaining the high moisturizing properties of glycerin, the sticky characteristic of glycerin is maintained. Good light feeling with reduced feeling.

Claims (6)

[Claims] [Claim 1] The following general formula (1) [Wherein R ¹ , R ² and R ³ are the same or different and have 1 carbon atom
Represents a linear or branched alkyl group of 1 to 4, l, m and n
Represents the same or different 1 to 10 numbers such that l + m + n ≧ (total carbon number of R ¹ , R ² and R ³ ). ] The cosmetic which contains the glyceryl ether represented by these. 2. The cosmetic according to claim ¹ , wherein in formula (1), the total number of carbon atoms of R ¹ , R ² and R ³ is 4 to 12, and 1 + m + n is 4 to 20. 3. The cosmetic according to claim 1, wherein the amount of the glyceryl ether represented by the general formula (1) is 1 to 50% by weight. 4. The cosmetic according to claim 1, further comprising glycerin. 5. The cosmetic according to claim 4, wherein the amount of the glyceryl ether represented by the general formula (1) is 0.1 to 10 times the weight of glycerin. 6. The cosmetic according to claim 1, further comprising a silicone oil.