JPH08245343A - Composite powder and cosmetic - Google Patents

Abstract

PURPOSE: To obtain a cosmetic containing silicone-treated zinc oxide and a composite powdery material, having an excellent sebum-controlling property, good in touch and not having oily touch. CONSTITUTION: A cosmetic contains a powdery material (e.g. spherical nylon powder) and a sebum-resistant powdery material produced by treating the surface of zinc oxide with methylhydrogensiloxane-dimethylsiloxane copolymer of the formula [m:n is (0.6-1.4):1; m+n=20-60]. The surface-treated sebum- resistant powdery material and the powdery material are used in a weight ratio of 5/95 to 60/40, and the composite powdery material is contained in an amount of 0.01-60wt.% based on the whole amount of the cosmetic. An oil- absorbing powdery material (e.g. a clay mineral) may be added to the cosmetic for the improvement in the sebum-fixing ability of the cosmetic. The silicone treatment of the zinc oxide is performed by heating the mixed raw materials at 50-200 deg.C for 0.5-5hrs. Thus, the cosmetic prevented in oily touch and in brightness and good in durability is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to suppressing oiliness.
The present invention relates to a composite powder composed of a sebum-resistant powder and a powder, which is excellent in suppressing illumination and improving the durability of makeup, and a cosmetic material containing the same.

[0002]

2. Description of the Related Art Conventionally, the so-called T zone, which is hung from the forehead to the nose, produces a lot of sebum, so that the
Oil floats and shines, and makeup is severely damaged. In order to suppress such excessive sebum and improve makeup retention, various studies have been made in the past.

For example, by treating a fluorine compound,
It has been proposed to impart oil repellency (JP-A-55-55).
No. 167209, JP-A No. 62-250074, JP-A No. 1-180811, US Pat. No. 363.
2744). However, such a fluorine compound-treated powder cannot be sufficiently repelled when a large amount of sebum is present, and there is a problem in terms of usability.

[0004] In addition, cosmetics containing porous powder that absorbs sebum and clay minerals have also been studied (Japanese Patent Publication No. 4-1).
No. 4642), such a powder also absorbs the oil content in the cosmetics, and thus it was not possible to obtain a sufficient effect.

Furthermore, fine particles of zinc oxide chemically react with fatty acids contained in sebum to fix (gel) sebum,
It is known that the spread of sebum is suppressed, the oiliness is suppressed, and the cosmetic durability is improved, but since such zinc oxide is difficult to be stably dispersed in the cosmetic, It was not possible to adequately control sebum.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sebum-resistant composite powder having a good feeling of use while having excellent sebum controllability, and a cosmetic containing the same.

[0007]

[Means for Solving the Problems] Under such circumstances, as a result of intensive studies by the present inventors, it was found that composite powder of silicone-treated zinc oxide and powder, particularly organic powder, immobilizes sebum. The present invention has been completed by discovering that the cosmetics containing the composite powder have excellent performance and have a good feeling in use and suppress dullness.

That is, the present invention provides the following components (A) and (B): (A) Sebum-resistant powder obtained by surface-treating zinc oxide with silicone, (B) composite powder containing the powder and the same. The present invention provides a contained cosmetic or a sebum control cosmetic.

The zinc oxide used as the component (A) is not particularly limited, but the specific surface area is preferably 5 to 100 m ² / g, particularly preferably 15 to 100 m ² / g. Although sebum fixing activity by complexing described below in specific surface area 5 to 15 m ² / g approximately fine zinc oxide can be used to express, in the specific surface area is less than 5 m ² / g, a sufficient sebum fixing ability can be obtained If it exceeds 100 m ² / g, the fine particle zinc oxide becomes too small and the production becomes difficult.

The silicone used for the surface treatment of zinc oxide is not particularly limited, but for example, methyl hydrogen siloxane / dimethyl siloxane copolymer, methyl hydrogen siloxane, hydrogen siloxane and the like are preferable. (1)

[0011]

Embedded image

(Where m and n are m: n = 0.6 to 1.
The number is 4: 1 and m + n = 20 to 60. )
It is more preferable to use a methylhydrogensiloxane / dimethylsiloxane copolymer represented by

The methyl hydrogen siloxane / dimethyl siloxane copolymer represented by the general formula (1) is m
And n is m: n = 0.6 to 1.4: 1, and m + n =
20 to 60, but m: n = 0.7 to 1.
It is preferably 3: 1 and m + n = 22 to 55. When m and n are values outside the above range, the surface of zinc oxide cannot be sufficiently covered, aggregation is likely to occur, and interaction with sebum becomes poor.

The amount of silicone used is preferably 1 to 20% by weight, more preferably 2 to 14% by weight, and further preferably 2 to 10% by weight, based on the zinc oxide to be treated.

To surface-treat the above zinc oxide with silicone, for example, after mixing these, 50 to 200 ° C.
The heat treatment may be performed for 0.5 to 5 hours.

There is no particular method or condition for mixing these, and a method of sufficiently mixing and contacting both components by an appropriate mixing means can be applied. As the mixing means used here, a ball mill, a hodgersite ball mill, a vibrating ball mill, a rotary ball mill, a vibrating rod mill, a vibrating mill, an attritor, a pot mill, a rod mill, a pan mill, a Henschel mixer, a super mixer, an Ong mill, a mortar, a hybrid. Dizer,
An air blender and the like can be mentioned. In addition, a solvent can be used in this mixing step, if necessary. The solvent is preferably a low boiling point solvent in consideration of ease of removal and application of a heating reflux method as a mixing means. Such low boiling point solvents include dichloromethane, n-hexane, cyclohexane,
Examples include petroleum ether, acetone, isopropyl alcohol, methyl ethyl ketone, heptane, volatile dimethylcyclopolysiloxane, isoparaffin and the like.

Next, the mixed raw materials are heat-treated. This heat treatment condition is preferably 50 to 200 ° C. for 0.5 to 5 hours, and particularly preferably 70 to 200 ° C. for 0.5 to 4 hours in order to sufficiently bond zinc oxide and silicone. The heating means is not particularly limited as long as it can be heated under these conditions, and, for example, a blower dryer, a vacuum dryer, a spray dryer, an evaporator, a flask with a reflux condenser and the like can be used.

This heat treatment may be carried out in the gas phase or in the liquid phase as long as it can be heated within the above temperature and time range, and it may be heated at a specific temperature as it is or from a low temperature. The temperature may be gradually raised and then maintained at a specific temperature. Further, it is possible to perform heat treatment in two or more steps at the same or different temperatures. Further, this heat treatment can be carried out in parallel with the above-mentioned mixing, that is, while being mixed.

Without surface treatment with silicone,
That is, if zinc oxide is complexed with powder without treatment, sebum-fixing ability will decrease.

The component (B) is not particularly limited as long as it is a powder, but an organic powder is preferable, for example, polyester,
Polyethylene, polystyrene, polymethylmethacrylate, cellulose, chitin, chitosan; 12 nylon, 6
Nylon powder such as nylon; epoxy resin, acrylic resin, methacrylic resin, Teflon, polyvinyl chloride,
Examples thereof include silicone, titanium, talc, silicic acid anhydride, and silicic acid hydrate. The shape of these powders is also not particularly limited, but is generally spherical, plate-like, or indefinite, and may be porous or non-porous. Above all, a resin powder having a specific gravity of about 1 is preferable from the viewpoint of dispersibility of the composite powder in an aqueous medium. In addition, a spherical shape is preferable in terms of composite efficiency. For example, true spherical nylon powder, spherical silicone powder and the like are preferable in terms of usability. The average particle size is preferably 2 to 50 μm, particularly 4 to 20 μm, and further preferably 5 to 10 μm.

The composite method of the component (A) and the component (B) is not particularly limited, and examples thereof include a dry method, a wet method; a mechanochemical method such as a high-speed air impact method, and the like. The method is particularly preferred. As a mixing device used for the combination, various ball mills, pot mills, mortars, lychees, attritors, hybridizers, ong mills and the like can be used, and hybridizers are particularly preferable.

The compounding ratio of the component (A) and the component (B) used in the composite is preferably 1/99 to 70/30, and particularly preferably 5/95 to 60/40 (% by weight).

The sebum-resistant composite powder obtained by the above composite method can be applied to the skin by itself, but it can also be used as a cosmetic in which the composite powder is mixed with other components. it can. In particular, it can be used as a sebum control cosmetic for the purpose of preventing sebum. The compounding amount of the composite powder is 0.01 to 60 in the total amount of the cosmetic.
% By weight is preferred, particularly preferably 0.1 to 20% by weight
Is. Within this range, a sufficient sebum resistance effect can be obtained, and the usability is also good.

Cosmetics containing the composite powder of the present invention include
Further, an oil-absorbing powder can be added for the purpose of improving the sebum-fixing ability. Examples of the oil-absorbing powder include, for example, magnesium silicate / aluminum, clay mineral containing magnesium silicate / sodium as a main component, porous nylon powder (manufactured by Organsol 2002, elf atochem), and silicone rubber powder (trefil E-). 506C, manufactured by Toray Dow Corning, porous polymer (styrene /
Stearyl methacrylate / divinylbenzene), magnesium silicate (Fluorite, manufactured by Tokuyama Soda Co., Ltd.), zinc carbonate, silicic anhydride (Sildex, manufactured by Asahi Glass Co., Ltd.) and the like can be mentioned.

The blending amount of the oil-absorbing powder is
0.01 to 30% by weight is preferable, and 0.1 to 10% by weight is particularly preferable.

In the cosmetics of the present invention, in particular the sebum control cosmetics, in addition to the composite powder, various cosmetics, quasi-drugs, and pharmaceuticals may be blended according to the purpose without impairing the effects of the present invention. Ingredients such as oil, ethanol, water-soluble polyhydric alcohol, water, surfactant, silicones, powder,
Ceramides, plant extracts, pH adjusters, viscosity adjusters and the like can be added.

Examples of oils include solid or liquid paraffins; hydrocarbons such as crystal oil, ceresin, ozokerite, montan wax, squalane, squalene; olive oil, carnauba wax, lanolin, jojoba oil, glycerin monostearate, glycerin distearin. Ester oils such as acid esters, glycerin monooleate, isopropyl stearate, neopentyl glycol dicaprate, cholesterol isostearate; higher fatty acids such as stearic acid and palmitic acid; higher alcohols such as cetanol and stearyl alcohol; cholesterol, Sterols such as alkenyl succinate cholesteryl can be used. When these oils are blended, it is preferable to blend 0.01 to 50% by weight in the cosmetic, and especially 0.1.
It is preferable to add 1 to 30% by weight.

Water can be used as a base together with ethanol and a water-soluble polyhydric alcohol. The water-soluble polyhydric alcohol contains two or more hydroxyl groups in the molecule, for example, ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, dipropylene glycol, glycerin and diglycerin. , Triglycerin, polyglycerin such as tetraglycerin, glucose, maltose, maltitol, sucrose, fructose, xylitol, sorbitol, maltotriose, threitol, erythritol, starch-decomposing reduced alcohol, and the like. The above can be used. When these water, ethanol and water-soluble polyhydric alcohol are blended, the blending amount in the cosmetic can be appropriately set according to the dosage form, but the total amount thereof is usually 0.01 to
It is preferably blended so as to be 75% by weight, particularly preferably 0.1 to 25% by weight.

When the cosmetic of the present invention is emulsified or solubilized, it is preferable to add a nonionic or ionic surfactant. Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, and alkyl glyceryl ether. These can be used alone or in combination.

The ionic surfactant is any one of an anionic surfactant, an amphoteric surfactant and a cationic surfactant. As the anionic surfactant, sodium polyoxyethylene lauryl ether sulfate and polyoxy are used. Polyoxyethylene alkyl sulfate such as ethylene lauryl ether sulfate triethanolamine; N-acyl amino acid salt such as sodium lauroyl sarcosine and sodium lauroyl methylalanine; sodium polyoxyethylene lauryl ether phosphate, polyoxyethylene cetyl ether phosphate Sodium, dipolyoxyethylene alkyl ether phosphoric acid, tripolyoxyethylene alkyl ether phosphoric acid, dipolyoxyethylene nonylphenyl ether phosphoric acid, polyoxyethylene lauryl ether phosphorus Sodium di polyoxyethylene lauryl ether, polyoxyethylene alkyl ether phosphate-based sodium phosphate and the like such as are alkylbetaines amphoteric surfactants include alkyl betaines,
Alkyl sulfobetaines, etc. are used as cationic surfactants such as di long-chain alkyl quaternary ammonium salts, mono long-chain alkyl quaternary ammonium salts, di long-chain alkyl polyoxyethylene quaternary ammonium salts, mono long-chain alkyl polyoxyethylene quaternary ammonium salts. Examples thereof include a quaternary ammonium salt, a bis (hydroxyalkyl) quaternary ammonium salt, and a quaternary ammonium salt having an amide / ester bond. These may be used alone or in combination of two or more.

When blending these surfactants,
It is preferable to add 0.01 to 50% by weight, and especially 0.1 to 30% by weight to the cosmetic.

The cosmetic of the present invention may further contain silicones as an oil agent or a surfactant. The silicones are not particularly limited as long as they are usually blended in cosmetics, for example, octamethylpolysiloxane, tetradecamethylpolysiloxane,
Methyl polysiloxane, highly polymerized methyl polysiloxane,
In addition to methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and other methylpolycyclosiloxanes, trimethylsiloxysilicic acid, and further polyether-modified silicone, polyether-alkyl-modified silicone, alkylglycerylether-modified silicone And the like modified silicones and the like. When blending these silicones, the blending amount in the cosmetic is such as dimethylpolysiloxane, when used as an oil component, when using as a surfactant such as polyether modified silicone, when a non-silicone oil component or It may be adjusted so that the total amount with the surfactant is the above-mentioned amount.

A powder is further added to the cosmetic of the present invention,
It can be used as makeup cosmetics such as foundation. Examples of the powder include extenders such as mica, talc, sericite, kaolin, nylon powder, polymethylsilsesquioxane, calcium carbonate, aluminum oxide and barium sulfate; red iron oxide, yellow iron oxide,
Colored pigments such as black iron oxide, chromium oxide and carbon black; inorganic pigments such as pearls such as mica titanium and fish phosphorus foil; organic pigments such as red 202, red 226, yellow 4 and aluminum lake; zinc oxide, Examples thereof include inorganic powders such as titanium oxide, zirconium oxide, and iron oxide for protecting the ultraviolet rays. These powders are treated with silicone such as methylhydrogenmethylpolysiloxane, trimethylsiloxysilicic acid, methylpolysiloxane; fluorine treatment with perfluoroalkyl phosphate ester, perfluoroalcohol, etc .; amino acid treatment with N-acylglutamic acid, etc. Those treated with lecithin, metal soap, fatty acid, alkyl phosphate, etc. can also be used. When these powders are blended, the blending amount in the cosmetic can be appropriately set according to the dosage form, but it is usually preferable to blend 0.1 to 50% by weight, particularly 1 to 30% by weight. It is preferable to mix them.

Ceramides or pseudo-ceramides may be further added to the cosmetic of the present invention, and in particular, ceramides or pseudo-ceramides represented by the general formula (2) or (3),

[0035]

Embedded image

(In the formula, R ¹ and R ² are the same or different and each is a linear or branched saturated or unsaturated carbon atom having 9 to 39 carbon atoms which may be substituted with one or more hydroxyl groups. It represents a hydrogen group, and R ³ and R ⁴ are the same or different and represent a hydrogen atom, a phosphate residue, a sulfate residue or a sugar residue.).

The ceramides represented by the general formula (2) are
Even if it is extracted and purified from the brain or skin,
It may be one synthesized by a chemical method. As such a synthesis method, for example, JP-A-59-7118, W
The method described in O93 / 22281 can be used, and particularly preferred are N-oleoyl sphingosine, N- (12-hydroxyoctadecanoyl) sphingosine, N- (16-hydroxyhexadeca). Noil) sphingosine, bovine brain ceramide and the like. On the other hand, the pseudo-ceramides represented by the general formula (3) can be produced according to the method described in, for example, JP-A-62-228048, JP-A-63-216852, etc., and are particularly preferable. Is a compound represented by the following formula (4).

[0038]

[Chemical 4]

(In the formula, R ⁵ represents an alkyl group having 9 to 17 carbon atoms, and R ⁶ represents an alkyl group having 10 to 18 carbon atoms.) The amount of these ceramides or pseudo ceramides compounded is as follows. 0.01 to 50% by weight is preferable, and 0.1 to 40% is particularly preferable.
%, More preferably 0.1 to 20% by weight.

A plant extract can be blended with the cosmetic of the present invention. Examples of plant extracts include hamamelis, button pipi, ginger, senkinshi (chikaneko), carrot, gentian, chickweed grass, peony, cattlepea, parsley, sweet tea, sweetened, rensai grass, persimmon leaf, chamomile, floating grass, ginger. , Extended life grass, thyme, sagebrush, aloe, ginkgo, staghorn, psyllium, laurel, liquorice, kyokyou, chrysanthemum, austenite, kumazasa, gentiana, comfrey, hawthorn, gardenia, dokudami, birch, nemoptera, kuenpi, kuku, kiku Calendula, Tonnin, Spruce, Novara, Loquat, safflower, peppermint, horse chestnut, sardine,
Examples include peach leaf, cornflower, lily, yokinin, litchi, forsythia, and the like, and especially hamamelis, button pi, ginger, senkinshi (chikaneko), carrot, gentiana are preferred, and one or more species should be combined in combination. You can The blending amount is preferably 0.0001 to 10.0% by weight, more preferably 0.0002 to 5.0% by weight, and further 0.000% in terms of dry solid content in the cosmetic.
5 to 1.0% by weight is preferable.

The cosmetic of the present invention may further contain a pH adjuster. The pH adjuster is not particularly limited, but metal hydroxides such as sodium hydroxide, potassium hydroxide, lithium hydroxide; triethanolamine, isopropanolamine, diisopropanolamine, urea, ε
-Organic acids such as aminocaproic acid, sodium pyrrolidonecarboxylate, sodium hydrogenphosphate, sodium citrate, citric acid, lactic acid, succinic acid and tartaric acid; betaines such as glycine betaine and lysine betaine. The pH of the cosmetic of the present invention is preferably in the range of 4-10.

The cosmetic of the present invention may further contain a viscosity modifier, such as polyvinyl alcohol, carboxyvinyl polymer, carboxymethyl cellulose,
Gelatin, tragacanth gum, xanthan gum, hyaluronic acid, tuberose extract, agarose, sodium alginate and the like can be added. When a thickener such as carboxyvinyl polymer having a carboxyl group is used, it is preferable to further add a chelating agent. Examples of the chelating agent include disodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, ethylenediaminetetraacetic acid, citric acid and the like. If a chelating agent is not added, the reaction of the carboxyl group of the thickener with zinc oxide causes a decrease in viscosity. Keep the carboxyl group of the thickener free,
In addition, it is particularly preferable to use sodium citrate, citric acid, or the like as the chelating agent because zinc oxide promptly forms fatty acid and fatty acid zinc in sebum.

Other components of the cosmetic of the present invention include carotenoids such as α-carotene, β-carotene, γ-carotene, lycopene, cryptoxanthin, lutein, zeaxanthin, isozeaxanthin, rhodoxanthin, capsanthin and crocetin. 2,5-dimethylfuran, 2-methylfuran, 2,5-diphenylfuran,
1,3-diphenylisobenzofuran, α-tocopherol, β-tocopherol, γ-tocopherol, d-
Tocopherol, histidine, tryptophan, methionine, alanine or its alkyl ester, dibutylhydroxytoluene, butylhydroxyanisole, ascorbic acid, tannic acid, epicatechin, epigallocatechin, epicatechin gallate, tannins such as epigallocatechin gallate, rutin, etc. Antioxidants such as flavonoids; inorganic salts such as magnesium sulfate, potassium sulfate, sodium sulfate, magnesium chloride, sodium chloride; stearyl glycyrrhetinate, ε-aminocaproic acid and its salts, allantoin, bisabolol, glycyrrhizinic acid and its salts, glycyrrhetin Anti-inflammatory agents such as acids and salts thereof, lysodium chloride, guaizulene, methyl salicylate, γ-oryzanol; preservatives such as parabens, ultraviolet absorbers, pigments, medicinal ingredients, Fragrances and the like can be further added.

[0044]

The composite powder of the present invention has an excellent ability to fix sebum. That is, it is possible to instantly react with the sebum and solidify it to suppress the spread of the sebum. In addition, it has good compatibility with the skin, high affinity for sebum, and a smooth feel. In addition, the cosmetic containing this composite powder has a good feeling in use, suppresses dullness, improves makeup retention, and suppresses skin shine due to sebum.

[0045]

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

Examples 1 to 3 and Comparative Examples 1 to 6 The following sebum-resistant composite powders or powders were produced and evaluated for sebum-fixing ability, dispersibility, usability, water resistance, and powder dispersibility. . The results are shown in Table 1.

Example 1 Fine zinc oxide (made by Sakai Chemical Co., Ltd.) 96 having a specific surface area of 10 m ² / g
methyl hydrogen siloxane (KF-
4g of 99P) and 200g of dichloromethane were mixed.
Then, the mixture was heated under reflux at 50 ° C. for 3 hours, and then,
Dichloromethane was distilled off by heating with stirring at 100 ° C. for 2 hours. Next, 12 g of this finely treated zinc oxide treated with silicone and 18 g of polyethylene powder having an average particle size of 15 μm were mixed with a hybridizer (NHS-O (hereinafter referred to as NHS-O).
O))) for 1 minute at a rotational speed of 12000 rpm to obtain a sebum-resistant composite powder A.

Example 2 Fine particle zinc oxide having a specific surface area of 50 m ² / g (FINEX-
50, manufactured by Sakai Chemical Co., Ltd.) to 96 g, methylhydrogensiloxane / dimethylsiloxane copolymer (KF-
9901) 4g and dichloromethane 200g were mixed with the ball mill. Next, this mixture was heated under reflux at 50 ° C. for 3 hours and then heated under stirring at 100 ° C. for 2 hours to distill off dichloromethane. Next, 100 g of the silicone-treated fine particle zinc oxide and 900 g of a silicone resin powder having an average particle size of 10 μm were charged in a rotary ball mill and treated for 10 hours to obtain a sebum-resistant composite powder B.

Example 3 Fine zinc oxide having a specific surface area of 75 m ² / g (FINEX-
75, Sakai Chemical Co., Ltd.) 90 g, methylhydrogensiloxane / dimethylsiloxane copolymer (KF-
9901) 10g in an air blender (air temperature 50
C) was used to mix. Next, a primary heat treatment was carried out at 80 ° C. for 1 hour, then the temperature was raised to 105 ° C., and a heat treatment was further carried out for 1 hour. Next, 6 g of this fine particle zinc oxide treated with silicone and 24 g of 6 nylon powder having an average particle size of 6 μm.
With a hybridizer (NHS-O)
Treatment at 000 rpm for 2 minutes was performed to obtain a sebum-resistant composite powder C.

Comparative Example 1 Fine zinc white 98 (manufactured by Sakai Chemical Industry Co., Ltd.) having a specific surface area of 10 m ² / g.
methyl hydrogen siloxane (KF-
99P) 2g and dichloromethane 200g were mixed.
The mixture was heated to reflux at 50 ° C. for 3 hours, then 100
Dichloromethane was distilled off by heating and stirring at ℃ for 2 hours.
I got

Comparative Example 2 6 nylon powder having an average particle size of 6 μm was designated as powder E.

Comparative Example 3 Powder F was obtained by mixing 10% by weight of the powder obtained in Comparative Example 1 with 90% by weight of 6 nylon powder having an average particle size of 6 μm without forming a composite.

Comparative Example 4 Fine powder zinc oxide (FINEX-25, manufactured by Sakai Chemical Industry Co., Ltd.) having a specific surface area of 25 m ² / g which was not treated with silicone was used as a powder G.

Comparative Example 5 20% by weight of fine particle zinc oxide having a specific surface area of 75 m ² / g (FINEX-75, manufactured by Sakai Chemical Industry Co., Ltd.) not treated with silicone
80% by weight of polyethylene (flow beads, manufactured by Sumitomo Seika Chemical Industries, Ltd.) having an average particle size of 10 μm was combined with mechanochemicals using a hybridizer (NHS-O) to obtain powder H.

Comparative Example 6 Fine particle titanium oxide (MT-600) having 8 g of methylhydrogensiloxane / dimethylsiloxane copolymer (KF-9901, manufactured by Shin-Etsu Chemical Co., Ltd.) and a specific surface area of 33 m ² / g.
B, manufactured by Teika Co., Ltd.) and 400 g of silicone-treated powder and 600 g of polyethylene powder having an average particle size of 100 μm are put into a vibrating ball mill and mixed and compressed for 3 hours to obtain composite powder I.
I got

(Evaluation method) Sebum fixing ability: 1 g of each sebum-resistant composite powder or powder, 37.5% by weight of squalane, triglyceride (olive oil)
20 g of model sebum consisting of 37.5% by weight and 25% by weight of oleic acid was prepared. Next, these powders and model sebum were put into a screw tube and mixed with a touch mixer. After standing for 2 hours, the state of the mixture was visually observed and evaluated according to the following criteria. A: Solidified. ◯: Thickened considerably, but did not solidify (viscosity 1000
cP or more). Δ: Viscosity increased slightly. X: There was no change.

Dispersibility: The sebum-resistant composite powder or powder was observed under an electron microscope and evaluated according to the following criteria. ⊚: Zinc oxide or child particles (coated powder) are uniformly dispersed without aggregating. ◯: Zinc oxide or child particles (coated powder) are hardly aggregated. Δ: Zinc oxide or child particles (coating powder) are partially aggregated into a large lump. X: Most of zinc oxide or child particles (coated powder) aggregate to form a large lump.

Feeling of use: With respect to the sebum-resistant composite powder or the powder, a dry feeling of the powder was evaluated by a feel evaluation test by 10 professional panelists according to the following criteria. ⊚: When 8 or more out of 10 people answered that they were good. ○: When 6 or more out of 10 people answered that they were good. Δ: When 4 or more of 10 people answered that they were good. ×: When less than 4 out of 10 people answered that they were good.

Water resistance: Sebum-resistant composite powder or powder 0.
When taking 1 g and floating in a beaker containing 50 ml of water,
It was observed whether it did not sink in water and evaluated according to the following criteria. ◎: Does not sink in water. ○:-△: Partially submerged, partly submerged. ×: All are sunk.

Dispersibility of powder: 1 g of each sebum-resistant composite powder and powder are mixed with 10 ml of hexane and allowed to stand for 24 hours. The dispersibility of the powder was evaluated from the settling volume according to the following criteria. A: Less than 1.8 ml. Good packing because it does not aggregate. ○: less than 2.0 ml. Good packing because it does not aggregate. Δ: Less than 5.0 ml. Due to aggregation, the packing is rough. X: Less than 8.0 ml. Due to aggregation, the packing is rough.

[0061]

[Table 1]

Examples 4 to 10 and Comparative Examples 7 to 12 (Production of milky liquid sebum control cosmetics) Milky liquid sebum control cosmetics having the compositions shown in Tables 2 and 3 were produced by a conventional method, and were oily. The inhibitory effect was evaluated. The results are shown in Tables 2 and 3. (Evaluation method) Oiliness suppression effect; in the summer, a certain amount of emulsion (40 μl / 12 cm ² ) was applied to the forehead of 5 men and women with oily skin, and the skin condition after 5 hours was evaluated as follows. It was evaluated according to the standard. ◎: Sticky, no lighting. O: Fat is floating around the pores. Or it is shining. Δ: Not only the pores but also the oil is uniformly floated over the whole.
Or there is light. X: The oil is floating and it is tight.

[0063]

[Table 2]

[0064]

[Table 3]

Examples 11 to 12 (O / W type skin care emulsion), (O / W type emulsion type oil control cosmetics) O / W type emulsions having the compositions shown in Table 4 were produced by a conventional method.

[0066]

[Table 4]

The obtained emulsion was excellent in the effect of suppressing oiliness, the effect of suppressing illumination and the effect of suppressing stickiness.

Example 13 (Sunscreen emulsion) A sunscreen emulsion having the composition shown in Table 5 was produced by a conventional method.

[0069]

Table 5 (Components) (wt%) Composite powder B 3.0 Silicone-treated fine particles Titanium oxide 3.0 Compound 1 1.0 Octyl paramethoxycinnamate 6.0 4-tert-butyl-4-methoxybenzoylmethane 2 0.0 oleyl oleate 5.0 dimethyl polysiloxane (6 cSt) 3.0 vaseline 0.5 cetyl alcohol 1.0 sorbitan sesquioleate 0.8 polyoxyethylene (20) oleyl alcohol ether 1.2 dipropylene glycol 6. 0 ethanol 3.0 hydroxyethyl cellulose 0.3 n-octadecenyl succinic acid cholesteryl monoester 1.0 stearyl glycyrrhetinate 1.0 tocopherol 1.0 succinic acid 0.2 sodium hydroxide 0.2 purified water residual amount meter 100

The obtained emulsion was excellent in the effect of suppressing oiliness, the effect of suppressing illumination, and the effect of suppressing stickiness, and had a long-lasting make-up.

Example 14 (Sebum Control Lotion) A sebum control lotion having the composition shown in Table 6 was produced by a conventional method.

[0072]

[Table 6] (Components) (wt%) Dimethyl siloxane / methyl (polyoxyethylene) 1.0 Siloxane copolymer (SH-3771) Composite powder A 1.0 Purified water Remaining amount Ethanol 15.0 Glycerin 10. 0 Vitamin B ₆ 0.1 Total 100

This lotion had the effect of suppressing oiliness, gave a refreshing feeling of use, and was good for holding makeup.

Example 15 (Powder Foundation) A powder foundation having the composition shown in Table 7 was produced by a conventional method.

[0075]

[Table 7] (Components) (wt%) (1) Lecithin-treated powder Titanium oxide 10.0 Sericite 20.0 Mica balance Kaolin 5.0 Bengala 0.8 Yellow iron oxide 2.5 Black iron oxide 0.1 (2) Composite powder C 8.0 (3) Liquid paraffin 8.0 (4) Beeswax 2.0 (5) Preservative 0.2 (6) Perfume Proper amount 100.0

This powder foundation was able to suppress the spread of sebum, gave a refreshing feeling of use, and had a long lasting make-up.

Example 16 (Dual-use powder foundation) A dual-use powder foundation having the composition shown in Table 8 was produced by a conventional method.

[0078]

Table 8 (Components) (% by weight) (1) Silicone treated powder Titanium oxide 10.0 Mica titanium 3.5 Sericite 20.0 Mica balance Kaolin 5.0 Talc 4.0 Aluminum oxide 10.0 Barium sulfate 5.0 Red iron oxide 0.8 Yellow iron oxide 2.5 Black iron oxide 0.1 (2) Composite powder A 8.0 (3) Liquid paraffin 4.0 (4) Squalane 2.0 (5) Methylphenyl poly Siloxane (100cSt) 4.0 (6) Preservative 0.2 (7) Perfume Proper amount 100.0

This dual-purpose powder foundation was able to suppress the spread of sebum, gave a refreshing feeling of use, and was good for holding makeup.

Example 17 (Powder powder) A powder powder having the composition shown in Table 9 was produced by a conventional method.

[0081]

[Table 9] (Components) (% by weight) (1) Silicone treated powder talc balance red iron oxide 0.4 yellow iron oxide 0.5 black iron oxide 0.1 (2) composite powder C 10.0 (3) stearin Magnesium acid 5.0 (4) Perfume proper amount meter 100.0

This powdery powder was able to suppress the spread of sebum, and had a refreshing feeling of use and had a long-lasting cosmetic quality.

Example 18 (blusher) The blusher shown in Table 10 was produced by a conventional method.

[0084]

[Table 10] (Components) (% by weight) (1) Lecithin-treated powder Titanium oxide 10.0 Mica 13.0 Kaolin balance Red No. 202 2.5 Iron oxide (red, yellow, black) 5.0 (2) Composite powder B 12.0 (3) Dimethyl polysiloxane (10 cSt) 10.0 (4) Liquid paraffin 2.0 (5) Preservative 0.1 (6) Perfume proper amount meter 100.0

This blusher was able to suppress the spread of sebum, had a refreshing feeling of use, and was good for holding makeup.

Example 19 (makeup base cream) A makeup base cream having the composition shown in Table 11 was produced by a conventional method.

[0087]

[Table 11] (Components) (% by weight) (1) Decamethylcyclopentasiloxane 30.0 (2) Aristo wax 4.0 (3) Sorbitan diisostearate 2.0 (4) Dimethylpolysiloxane (6cSt) 15.0 (5) Octyl methoxycinnamate 1.0 (6) Silicone treated powder Sericite 5.0 Nylon powder 3.0 Iron oxide (red, yellow, black) 0.1 (7) Composite powder C 12 0.0 (8) 1,3-butylene glycol 5.0 (9) Preservative 0.1 (10) Purified water Balance (11) Perfume Micrometer 100.0

This base cream suppressed the spread of sebum, suppressed stickiness and shining, and had a long-lasting makeup.

Claims (9)

[Claims] 1. A composite powder comprising the following components (A) and (B): (A) zinc oxide surface-treated sebum-resistant powder, and (B) powder. 2. The component (A) is zinc oxide represented by the following general formula (1): (Wherein, m and n are numbers such that m: n = 0.6 to 1.4: 1 and m + n = 20 to 60). The composite powder according to claim 1, which is a surface-treated sebum-resistant powder. 3. The component (A) has a specific surface area of 5 to 100 m ^2.
3. The composite powder according to claim 1 or 2, which is a sebum-resistant powder obtained by surface-treating fine particle zinc oxide of 1 / g with silicone. 4. The composite powder according to claim 1, wherein the component (B) is nylon powder. 5. The composite powder according to claim 1, wherein the component (B) is a true spherical nylon powder having a particle size of 2 to 50 μm. 6. The compounding ratio of the component (A) and the component (B) is 5 /.
The composite powder according to claim 1, which is 95 to 60/40 (% by weight). 7. A cosmetic comprising the composite powder according to any one of claims 1 to 6. 8. A sebum control cosmetic, which comprises the composite powder according to any one of claims 1 to 6. 9. The cosmetic according to claim 7, further comprising an oil-absorbing powder.