JP2681555B2 - Cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic composition, and more particularly to a cosmetic composition which has good adhesion to the skin, little makeup damage, and a good feel.

[0002]

2. Description of the Related Art
As cosmetics containing powder, makeup cosmetics such as foundation, white powder, blusher, eye shadow and eyebrow, and body cosmetics such as body powder and baby powder are commercially available.

However, it has been pointed out that cosmetics containing these powders for cosmetics have problems such as lack of smoothness and smoothness on the skin, and lack of makeup.

On the other hand, in recent years, hydrophobized powder has been used to improve the adhesion of the powder to the skin and the water (sweat) resistance. However, in general, when the above-mentioned hydrophobized powder is used, problems arise in terms of usability such as deterioration of elongation and deterioration of feeling (squeaking).

Therefore, there has been a demand for the development of a cosmetic having good adhesion to the skin, little damage to the makeup, and a good feel.

[0006]

Means for Solving the Problems The inventors of the present invention have made extensive studies in view of such circumstances, and as a result, by using a polymethylsilsesquioxane powder and a hydrophobized powder in combination, the adhesion to the skin is improved. The inventors have found that a cosmetic which is good, has little makeup damage, and has a good feel can be obtained, and has completed the present invention.

That is, the present invention provides a cosmetic composition comprising the following components (A) and (B) (A) polymethylsilsesquioxane powder (B) hydrophobized powder. Is.

The polymethylsilsesquioxane powder of the component (A) used in the cosmetics of the present invention has a network structure in which siloxane bonds extend three-dimensionally, and is composed of an inorganic compound in which one methyl group is bonded to a silicon atom. It has an organic intermediate structure. For the manufacturing method thereof, see JP-A-63-297.
No. 313 publication.

The polymethylsilsesquioxane powder has a true spherical shape and an average particle size of 0.1 to 20 μm, preferably 2 to 12 μm, and a particle size distribution of ± 30% of the average particle size. Those in the range are preferred.

The polymethylsilsesquioxane powder is composed of, for example, true spherical particles having an average particle diameter of 5 μm, a true specific gravity of 1.3, a bulk specific gravity of 0.35, and a specific surface area of 15 to 30 cm.
² / g, a white powder of linseed oil absorption amount 75 ml / 100 g "Tospearl 120", and an average particle diameter of 4.5μm
The true specific gravity is 1.3, the bulk specific gravity is 0.43, the specific surface area is 15 to 30 cm ² / g, and the linseed oil absorption is 58 ml / 1.
It is sold by Toshiba Silicone Co., Ltd. as "TOSPEARL 145", which is 00 g of white fine powder.

In the present invention, the compounding amount of the polymethylsilsesquioxane powder as the component (A) can be changed according to the dosage form, but is 0.01 to 40% by weight, particularly 1 to 20% in the cosmetic. It is preferable that the composition is blended in a weight percentage.

Further, it is used in the cosmetic of the present invention (B).
The hydrophobized powder of the component is obtained, for example, by hydrophobizing the surface of one or more powders selected from inorganic powders and organic powders.

As the surface treatment method, for example, an oil and fat treatment method for adsorbing oils and fats on the powder surface or utilizing functional groups such as hydroxyl groups to cause esterification or etherification to make the powders lipophilic, fatty acids Examples thereof include a metal soap treatment method using a zinc salt or a magnesium salt, a silicone treatment method using dimethylpolysiloxane or methylhydrogenpolysiloxane, and a treatment method with a fluorine compound having a perfluoroalkyl group.

Here, the fluorine compound having a perfluoroalkyl group is, for example, a compound represented by the general formula [R ^f C _n H _2n O] _y PO (OM) _3-y.
(In the formula, R ^f represents a linear or branched perfluoroalkyl group or a perfluorooxyalkyl group having 3 to 21 carbon atoms. N represents a number of 1 to 12 and y represents a number of 1 to 3. M represents hydrogen, alkali metal, ammonium or substituted ammonium), a perfluoroalkyl phosphate ester (described in US Pat. No. 3,632,744), and a resin having a perfluoroalkyl group (JP-A-55-55). No. 167209), tetrafluoroethylene resin, perfluoroalcohol, perfluoroepoxy compound, perfluorocarboxylic acid, perfluorosulfate, perfluoroalkylsilane (JP-A-2-2186).
No. 03) and the like.

The mother powder to be treated is not particularly limited as long as it is a substance that is substantially insoluble in water and oil such as pigments and ultraviolet absorbers. For example, titanium oxide, iron oxide, ultramarine blue, zinc white, oxidation Magnesium, mica, sericite, talc,
Examples thereof include inorganic pigments such as silica, kaolin, chromium hydroxide, and carbon black, nylon powder, polymethyl methacrylate, styrene-divinylbenzene copolymer, organic powder such as polyethylene powder, and organic dyes.

These hydrophobized powders can be used alone or in combination of two or more. The particle size of the powder is 0.01 to 80 μm, especially 0.0
5-20 μm is preferred.

In the present invention, the blending amount of the hydrophobized powder of the component (B) can be changed according to the dosage form.
It is mixed in the cosmetic in an amount of 0.01 to 95% by weight.

In addition to the above-mentioned essential components, the cosmetic composition of the present invention may contain, if necessary, components that are commonly used in conventional cosmetic compositions. For example, solid / semi-solid oil components such as petrolatum, lanolin, ceresin, microcrystalline wax, carnauba wax, candelilla wax, higher fatty acids and higher alcohols; liquid oil components such as squalane, liquid paraffin, ester oil, diglyceride, triglyceride, silicone oil; Fluorine-based oil agents such as fluoropolyether, perfluorodecalin and perfluorooctane; water-soluble and oil-soluble polymers, surfactants, inorganic and organic pigments, colorants such as organic dyes, ethanol, preservatives, antioxidants, pigments , Thickener, pH adjuster, fragrance, UV absorber, moisturizer,
Blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activating agents and the like can be added within the qualitative and quantitative ranges that do not impair the purpose and effects of the present invention.

The cosmetic composition of the present invention can be produced according to a conventional method, including a foundation, eye shadow,
It can be applied to makeup cosmetics such as blusher and basic cosmetics such as emulsion and cream.

[0020]

The cosmetics of the present invention have good adhesion to the skin, little makeup damage, and excellent feel.
This is to solve all the problems caused by the use of conventional hydrophobized powder.

[0021]

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.

Production Example 1 150 g of pigment is placed in a round bottom flask (or kneader) and heated to 60 ° C. while mixing. In addition, (C ₆ F
₁₃ CH ₂ CH ₂ O) ₂ P (O) OH (13 g) dissolved in 1500 g of isopropyl alcohol by heating (50 ° C.) is added, and mixed at 60 ° C. for 4 hours. Thereafter, isopropyl alcohol was distilled off under reduced pressure at 50 to 60 ° C., and dried to obtain 157 g of a hydrophobically treated pigment.

Production Example 2 150 g of pigment is placed in a round bottom flask (or kneader) and heated to 60 ° C. while mixing. In addition, (C ₈ F
13 g of ₁₇ CH ₂ CH ₂ O) ₂ P (O) OH dissolved in 1500 g of isopropyl alcohol by heating (50 ° C.) is added, and mixed at 60 ° C. for 4 hours. Then, isopropyl alcohol was distilled off under reduced pressure at 50 to 60 ° C., and dried to obtain 161 g of a hydrophobically treated pigment.

Example 1 (Powder Foundation) A powder foundation having the composition shown in Table 1 was prepared by the following method. Preparation method: Mix and pulverize powder components,
This was transferred to a Henschel mixer, and an oil agent and a fragrance were added and mixed so as to be uniform. This was press-molded on a gold plate to obtain a powder foundation.

[0025]

[Table 1]

With respect to the products of the present invention and the comparative products 1 and 2 thus obtained, the makeup retention and the feeling of use (no spread and squeaky feeling) were organoleptically evaluated by 10 professional panelists according to the following criteria. Table 2 shows the results. ○… More than 8 panelists answered good △ △ 4 to 7 or more panelists answered good × × 3 or less panelists answered good

[0027]

[Table 2]

As is clear from the above results, the product of the present invention was a powder foundation having a longer lasting makeup and a better feeling of use than the comparative product.

Example 2 (blusher) A blusher having the following composition was obtained in the same manner as in Example 1. (Wt%) (1) Hydrophobized pigment (mixed with methyl hydrogen polysiloxane afterwards) Kaolin balance mica 13.0 titanium oxide 12.0 iron oxide (red, black, yellow) 5.0 (2 ) Red No. 202 2.4 (3) Polymethylsilsesquioxane powder 15.0 (“Tospearl 145”, manufactured by Toshiba Silicone Co., Ltd.) (4) Squalane 7.5 (5) Dimethylpolysiloxane 7.5 (“KF96A "Shin-Etsu Chemical Co., Ltd., 6cs) (6) Preservative 0.1 (7) Perfume 0.05

Example 3 (Powder eyeshadow) A powder eyeshadow having the following composition was obtained in the same manner as in Example 1 except that pigments other than titanium mica were mixed and pulverized, and titanium mica was then mixed.

(Wt%) (1) Hydrophobized powder (mixed after treatment according to Production Example 2) Mica titanium 4.9 Sericite balance mica 24.7 Iron oxide (red, yellow, black) 2 0.0 Ultramarine 9.8 Dark blue 14.6 (2) Polymethylsilsesquioxane powder 15.0 (“Tospearl 145”, manufactured by Toshiba Silicone) (3) Dimethylpolysiloxane 1.9 (“KF96A” Shin-Etsu Chemical Co., Ltd.) (6) Squalane 1.9 (5) Vaseline 1.9 (6) Sorbitan trioleate 1.0 (7) Preservative 1.0 (8) Perfume 0.1

Example 4 (dual-use powder foundation) A dual-use powder foundation having the following composition was prepared as in Example 1.
Was obtained in the same manner as described above. (Wt%) (1) Hydrophobized powder (mixed after treatment according to Production Example 2) Mica balance talc 4.8 titanium oxide 14.0 mica titanium 3.5 iron oxide (red, yellow, black) 8.2 Zinc oxide 4.5 Aluminum oxide 10.0 Barium sulfate 5.0 (2) Polymethylsilsesquioxane powder 15.0 (“Tospearl 145”, manufactured by Toshiba Silicone Co., Ltd.) (3) Dimethylpolysiloxane 4. 0 (“KF96A” manufactured by Shin-Etsu Chemical Co., Ltd., 6cs) (4) Lanolin 6.0 (5) Vaseline 1.0 (6) Liquid paraffin 1.0 (7) Isopropyl myristate 1.0 (8) Preservative 1. 5 (9) Perfume 0.1

Example 5 (two-layer separation type sunscreen emulsion) A two-layer separation type sunscreen emulsion having the following composition was prepared by dissolving the oil phase at room temperature, adding a pigment, and dispersing with a disper.
Further, the aqueous phase was added with stirring to obtain an emulsion. (% By weight) (1) Octamethylcyclotetrasiloxane 25.0 (2) Perfluoropolyether 10.0 ("FOMBLIN HC-04", manufactured by Montefloss) (3) Dimethylpolysiloxane polyoxyalkylene copolymer 1 0.0 (“SH3775C”, manufactured by Toray Dow Corning) (4) Glycerin 2.0 (5) Ethanol 12.0 (6) Purified water balance (7) Octyl methoxycinnamate 2.0 (8) Hydrophobic oxidation Zinc (methyl hydrogen polysiloxane treatment) 7.5 (9) Polymethylsilsesquioxane powder 7.0 (“Tospearl 145”, manufactured by Toshiba Silicone Co., Ltd.) (10) Fragrance

Example 6 (Sunscreen Cream) A sunscreen cream having the following composition was prepared according to ingredients 10 and 1:
Dispersion of 2 in component 9 with disper and component 6
8 to the homogeneous mixed solution were added to the aqueous components 1 to 5 with stirring and emulsified. (% By weight) (1) polyoxyethylene (50) hydrogenated castor oil 0.5 (2) polyoxyethylene (50) sorbitan 1.0 palmitate (3) glycerin 6.0 (4) 1,3-butylene glycol 6 0.0 (5) Purified water 15.5 (6) Squalane 5.0 (7) Jojoba oil 5.0 (8) Octamethylcyclotetrasiloxane 18.0 (9) Perfluoropolyether 33.0 (“FOMBLIN HC -04 ", manufactured by Montefloss Co., Ltd. (10) Hydrophobized titanium oxide (processed according to Production Example 2) 1.0 (11) Polymethylsilsesquioxane powder 7.0 (" Tospearl 120 ", Toshiba Silicone Co., Ltd.) (Production) (12) Octyl methoxycinnamate 2.0

Example 7 (two-layer separation type liquid foundation) A two-layer separation type liquid foundation having the following composition was added after dissolving the oil phase at room temperature, dispersing the pigment with a disper, and stirring the aqueous phase. It was emulsified and obtained. (% By weight) (1) Hydrophobized pigment (mixed with methylhydrogenpolysiloxane afterwards) Titanium oxide 6.0 Iron oxide (red, yellow, black) 1.2 (2) Polymethylsilsesquioxy Sun powder 9.0 (“Tospearl 145”, manufactured by Toshiba Silicone) (3) Octamethylcyclotetrasiloxane 20.0 (4) Dimethylpolysiloxane 12.0 (“KF96A”, Shin-Etsu Chemical Co., Ltd., 6cs) (5) Dimethylpolysiloxane polyoxyalkylene copolymer 1.0 (“SH3775C”, manufactured by Toray Dow Corning Co., Ltd.) (6) Glycerin 2.0 (7) Ethanol 15.0 (8) Purified water balance (9) Perfume proper amount Above All of the cosmetics obtained in Examples 2 to 7 were excellent in the feeling of use and had good makeup retention.

Claims (1)

(57) [Claims] 1. A cosmetic comprising the following components (A) and (B). (A) Polymethylsilsesquioxane powder (B) Hydrophobized powder