JPH0543443A - Oily cosmetic - Google Patents

Abstract

PURPOSE:To obtain an oily cosmetic, improved in extensibility and adhesion onto the skin and, excellent in non-tackiness and capable of synergistically increasing skin humectant effects by using a polymethylsilsesquioxane powder and a diacylglycerol together in an oily comsetic. CONSTITUTION:An oily cosmetic is obtained by adding polymethylsilsesquioxane powder (preferably having 1-15mum average particle diameter) and a diacylglycerol [di(2-ethylhexanoic acid) glyceride, etc., are especially preferred] expressed by the formula (two of R<1> to R<3> are 6-32C fatty acid residue; the rest is H) to an oily cosmetic. The amounts of the ingredients in the cosmetic are preferably 5-35wt.% polymethylsilsesquioxane powder and 1-30wt.% diacylglycerol. The oily cosmetic can be used by combining dimethylpolysiloxane, squalane, olive oil, etc., as an oily base with beeswax, ceresin, solid paraffin, etc., as an oil gelling agent in addition to the above- mentioned ingredients.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil-based cosmetic composition, and more particularly to an oil-based cosmetic composition having good spreadability and adhesion on the skin, non-adhesiveness and excellent skin moisturizing effect.

[0002]

2. Description of the Related Art Oily cosmetics (here, an oily base composed of a liquid oil or a semi-solid oil and a solid oil, or an oily base which is further gelled by blending an oily gelling agent is used. Is a cosmetic product manufactured by mixing, dispersing and solidifying and molding the powder for use) and has excellent properties such as affinity for the skin and water resistance of the cosmetic film. Has been heavily used in.

Conventionally, the above oily cosmetics contain various powders for cosmetics and an oily component as main components.
Powder components and oil components having various shapes and characteristics have been investigated in order to obtain a good feel when used as cosmetics. Among them, as the powder component, for example, in order to improve the spreadability, nylon powder, polystyrene, spherical powder such as polymethylmethacrylate, or the like,
Plate-like powders such as mica have been used to improve the adhesion to the skin.

Further, in recent years, oil-based cosmetics containing spherical cellulose powder (Japanese Unexamined Patent Publication No. 61-100514), boron nitride (Japanese Unexamined Patent Publication No. 63-100508), etc. have been disclosed. The new powder corresponding to is being developed.

[0005]

However, it is usually necessary to use 30% by weight or more of an oily base in the oily cosmetic, and in this case, in terms of usability or moldability, the flow resistance strength is maintained. In order to do so, it is usually made into a solid or oil gel state by using a large amount of waxes and oil gelling agents. For this reason, there are drawbacks in that the spreadability on the skin is poor, the oily feeling is present, and the product is sticky. Therefore, when the powder blending ratio in the cosmetic composition is increased to improve oiliness and stickiness, the spreadability is further deteriorated, and the adhesion and the skin moisturizing effect are also deteriorated. Therefore, there has been a strong demand for the development of an oily cosmetic that can simultaneously satisfy the required properties such as spreadability on skin, adhesiveness, non-adhesiveness, and skin moisturizing effect.

On the other hand, cosmetics containing polymethylsilsesquioxane powder as spherical powder (Japanese Patent Laid-Open No. 1-2686)
No. 15) and a specific diacylglycerin are mixed, the oily feeling and the sticky feeling are suppressed, but the adhesion to the skin is poor and the skin moisturizing effect is not sufficiently satisfactory. In addition, diacyl glycerin alone, although a skin moisturizing effect is obtained, spreadability is poor,
It has the drawback of being sticky.

[0007]

[Means for Solving the Problems] Therefore, in view of the above-mentioned circumstances, the inventors of the present invention have conducted diligent research, and as a result, by using polymethylsilsesquioxane powder and diacylglycerin in combination with an oily cosmetic, The inventors have found that the above-mentioned spreadability and adhesion are improved, they are excellent in non-adhesiveness, and the skin moisturizing effect is synergistically increased, and the present invention has been completed.

That is, the present invention provides an oily cosmetic characterized by containing the following components (A) and (B). (A) Polymethylsilsesquioxane powder (B) Diacylglycerin represented by the following general formula (1)

[0009]

[Chemical 2]

(In the formula, ^{two of} R ¹ , R ² and R ³ are fatty acid residues having 6 to 32 carbon atoms, and the rest are hydrogen atoms.)

The polymethylsilsesquioxane powder used as the component (A) in the present invention has a network structure in which siloxane bonds are three-dimensionally extended, and one methyl group is bonded to a silicon atom. It has an intermediate structure between an inorganic substance and an organic substance. For the manufacturing method and the like, see Japanese Patent Laid-Open No.
It is described in detail in JP-A-3-297313.

The particle shape of the polymethylsilsesquioxane powder is spherical, and the average particle diameter is preferably 0.1 to 20 μm, particularly preferably 1 to 15 μm. A specific example is "Tospearl" (trade name). These are commercially available from Toshiba Silicone Co., Ltd.

The amount of polymethylsilsesquioxane powder to be added to the oily cosmetic composition of the present invention is 1 to 50% by weight (hereinafter simply referred to as%), especially 5 to 35%. Is preferred.

The diacylglycerin of the component (B) used in the present invention is represented by the above general formula (1). In the general formula (1), among R ¹ , R ² and R ³ , Of 2
The fatty acid residue shown in Table 1 includes both straight chain or branched chain fatty acid residues and saturated or unsaturated fatty acid residues.

The diacylglycerin (1) is preferably liquid at room temperature, and particularly preferred specific examples thereof include di (2-ethylhexanoic acid) glyceride, dioctanoic acid glyceride, dioleic acid glyceride, methyl-branched isostearic acid / myristin. An acid glyceride is mentioned.

The amount of diacylglycerin to be added to the oily cosmetic of the present invention is preferably 0.5 to 50%, more preferably 1 to 30% in the oily cosmetic.

The oily cosmetic composition of the present invention includes the above-mentioned component (A).
In addition to (B) and (B), a liquid material that is fluid at room temperature is used as an oily base. Specific examples include dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, squalane, light liquid paraffin, α-olefin oligomer, liquid polyisobutylene, hexyl laurate, octyldodecyl myristate, decyl oleate, hexyl isostearate. Decyl, diisostearyl malate, jojoba oil, liquid lanolin, olive oil, avocado oil, isostearyl alcohol and the like can be mentioned. These can be used alone or in combination of two or more.

Examples of the oil gelling agent include beeswax,
Solid paraffin, microcrystalline wax, spermaceti wax, ceresin, carnauba wax, candelilla wax, ozokerite and other solid oils, lipophilic sucrose fatty acid ester, dextrin fatty acid ester, dialkyl phosphate aluminum and aluminum distearate fatty acid polyvalent Examples thereof include metal salts. These can be used alone or in combination of two or more.

Other powders for cosmetics include talc, kaolin, zinc white, magnesium carbonate, calcium carbonate, silica powder, extender pigments such as silk powder and bentonite, titanium oxide, carbon black, iron oxide black, yellow ocher. , Inorganic pigments such as red iron oxide, amber and ultramarine, tar pigments, β-carotene, safflower pigments, organic pigments such as chlorophyll and cochineal, and pearl pigments such as mica titanium are appropriately blended in the oil-based cosmetic composition of the present invention. be able to.

Further, in the oily cosmetic of the present invention, water, a surfactant, a fragrance, a thickener, a preservative and the like can be further compounded, if necessary, within a range that does not impair the effects of the present invention. ..

The oily cosmetic composition of the present invention can be made into a makeup composition such as foundation, lipstick, blusher or a basic cosmetic composition by mixing the above-mentioned essential components and optional components by a conventional method.

[0022]

EFFECTS OF THE INVENTION The oil-based cosmetic composition of the present invention has good spreadability and adhesion on the skin, is excellent in non-adhesiveness, and has an excellent skin moisturizing effect. It can be used not only as a cosmetic, but also as a basic cosmetic, and is particularly suitable for rough hands and rough skin in winter.

[0023]

EXAMPLES The present invention will be specifically described below with reference to Examples, but it goes without saying that the present invention is not limited thereto.

Example 1 (Oil Foundation) An oil foundation having the composition shown in Table 1 below was prepared by the following method, and its spreadability, adhesiveness, non-adhesiveness and skin moisturizing effect were evaluated by the following evaluation methods. .. The results are shown in Table 2.

[0025]

[Table 1]

(Preparation Method) All of the components shown in Table 1 were added, thoroughly mixed with stirring, heated and melted at 70 to 100 ° C., filled in a gold plate and cooled,
An oil foundation was prepared. Since the surface of the inorganic powder such as metal oxide is hydrophilic, the surface of the inorganic powder was made hydrophobic in advance so as to be mixed with an oily cosmetic such as foundation and uniformly dispersed. Examples 1-3
The hydrophobic treatment of the inorganic powder used in 1. was performed with methylhydrogenpolysiloxane.

(Evaluation method) Usability: 20 women aged 20 to 40 were subjected to a practical test and evaluated for spreadability, adhesiveness and non-adhesiveness according to the following evaluation criteria. ○: The number of people who answered good was 15 or more △: 〃 7 to 14 people ×: 〃 6 people or less Skin moisturizing effect; A certain amount of the sample was artificially prepared in advance with a mixed solvent of acetone / ether (1: 1). Apply to the inside of the forearm that had been roughened on the skin, wash it off with a make-up detergent for 3 hours, put it in a constant temperature and humidity chamber at a temperature of 25 ° C and a humidity of 40%, and after 15 minutes, moisture content in the stratum corneum Was measured with an impedance meter (manufactured by IBS). By the measurement, a relative value was calculated with the value before acetone / ether treatment being 100, and the results are shown in Table 2 as an average value (repetition number: 10
Times).

[0028]

[Table 2]

As is clear from Table 2, the oil-based foundation of the present invention is superior in spreadability and adhesion on the skin and excellent in non-adhesiveness as compared with Comparative Products 1 to 3, and has a skin moisturizing effect. The result was extremely good and the effect was high. Further, it was proved that these components act synergistically and exert a remarkable effect, as compared with Comparative Products 2 and 3 in which polymethylsilsesquioxane powder and diacylglycerin were individually mixed.

Example 2 (Lipstick) A lipstick having the following composition was prepared by the procedure shown below. (%) Component (1) Polymethylsilsesquioxane powder 10 (“TOSPEARL 120”, manufactured by Toshiba Silicone Co., average particle size 2.0 μm) Titanium oxide (hydrophobizing treatment) 2 Pearl pigment (titanium mica) 8 Component (2 ) Red No. 202 3 Cholesteryl isostearate 10 Paraffin wax 27 Ceresin 7 Diacyl glycerin [di (2-ethylhe 20 xanoic acid) glyceride] Squalane Remaining amount

The same amount of squalane as Red No. 202 was pulverized and dispersed using a three-roll to form a paste. This was added to the residue of component (2) which had been heated and dissolved at 90 ° C. in advance, and the mixture was heated and mixed at 80 ° C. Add ingredient (1) to this,
After mixing and defoaming, it was poured into a split mold and cooled to prepare a lipstick.

Example 3 (Blusher) A blusher having the following composition was prepared by the procedure shown below. (%) Ingredient (1) Sericite (hydrophobizing treatment) Remaining amount Talc (〃) 15 Titanium oxide (〃) 3 Bengala (〃) 2 Iron oxide yellow (〃) 1 Aluminum stearate 1 Polymethylsilsesquioxane powder 30 (“TOSPEARL 130”, manufactured by Toshiba Silicone Co., Ltd., average particle size 3.0 μm) Component (2) Paraffin wax 1 Dimethyl polysiloxane (“KF96A”, Shin 7 Yue Chemical Co., Ltd., 6 cs) Diacyl glycerin (glycerate dioctanoate 2) Rin)

The component (1) is crushed and placed in a mixer, the component (2) which has been heated and dissolved in advance is added to the component (1) and mixed for about 5 minutes, and further finish crushed, followed by a pressing machine. It was pressed into a gold plate to prepare blusher.

The lipsticks and blushers obtained in Examples 2 and 3, respectively, had good spreadability and adhesiveness, were non-adhesive, and had excellent skin moisturizing effect. ..

Claims (1)

[Claims] 1. An oily cosmetic comprising the following components (A) and (B). (A) Polymethylsilsesquioxane powder (B) Diacylglycerin represented by the following general formula (1): (In the formula, ^{two of} R ¹ , R ² , and R ³ have 6 to ³ carbon atoms.
2 represents a fatty acid residue, and the rest represent hydrogen atoms. )