CN111278412A

CN111278412A - Powdered composition

Info

Publication number: CN111278412A
Application number: CN201880070499.XA
Authority: CN
Inventors: 佐藤知子; 木村元春
Original assignee: Shiseido Co Ltd
Current assignee: Shiseido Co Ltd
Priority date: 2017-11-02
Filing date: 2018-10-31
Publication date: 2020-06-12
Also published as: WO2019088186A1; TW201922198A; JPWO2019088186A1

Abstract

The present invention aims to provide a powdery composition which contains water and oil in a well-balanced manner, has a high effect of suppressing roughness, has a good affinity to the water-wet feeling, has a powdery appearance, liquefies when applied to the skin, has no dry and astringent feeling, and is excellent in usability. The powdery composition of the present invention is characterized by containing: (a) fluorine-treated powder, (b) an oily component which is liquid at room temperature, and (c) an aqueous component having a surface tension value of 45mN/m or more and 65mN/m or less, and the powdery composition is liquefied by rubbing. Further, the powdery composition of the present invention is characterized in that the amount of the component (b) is 1 to 50% by mass, and the mixing ratio of the component (b) to the component (c) is 1: 10-3: 1. in addition, the powdery composition of the present invention preferably contains substantially no surfactant.

Description

Powdered composition

Technical Field

The present invention relates to a powdery composition which is in a powdery form and is liquefied by application at the time of use.

Background

The powdered composition liquefied by rubbing has the following characteristics: it comprises a base agent having a structure in which a liquid component is encapsulated by a powder having high water repellency and oil repellency, has a powdery appearance, and liquefies when applied to the skin during use. Such a powdery composition can give a feeling of use based on the properties of the contained liquid components, and also can give stability in the production and transportation of the product, and is also suitable for carrying, and therefore, can be preferably used in the field of cosmetics.

For example, the following bases are mentioned: a base agent obtained by powdering an aqueous component and a hydrophobized powder for obtaining a fresh feeling of use (patent documents 1 and 2), or a base agent obtained by powdering an oily component and a fluorine-treated powder for obtaining a wet feeling of use (patent documents 3 and 4). However, the former has a problem that the skin feels dry after drying and is therefore unsuitable for dry consumers, and the latter has a problem that the skin does not have a moist touch and is therefore unsuitable for young consumers.

In order to solve the above problems, powdered cosmetics have been developed which contain both water and oil, are powdered in appearance, and liquefy when applied by rubbing at the time of use (patent documents 5, 6, and 7). However, the base described in patent document 5 has low water repellency and oil repellency as a constituent component of the hydrophobized (silicone-treated) silica, and therefore, for example, a polyol which lowers the surface tension of the aqueous phase or an oil component which has good affinity with the hydrophobized silica can be blended only in a small amount, and therefore, the reduction in the moisturizing effect and the dry feeling is not sufficient. In addition, the base described in patent document 6 is not satisfactory in terms of wettability and moisture retention because it is possible to produce a base having a large amount of powder or a large amount of liquid oil and silicone wax, and has a small amount of aqueous phase. Further, the oil component is solidified, so that the liquefied feeling is low, and the characteristics of the base are not sufficiently utilized. The base described in patent document 7 contains a surfactant as an essential component, and therefore, although a powder having high water repellency and oil repellency is used, the effect thereof is lost when the base is applied to the skin. Further, it is of low value to consumers who are free from the irritation of surfactants and the burden of synthetic surfactants on the environment and who have high safety concerns. Further, when the content of the powder is large relative to the amount of the liquid phase such as water or oil, consumers who feel rough and therefore feel unfavorable are not limited.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2000-264813

Patent document 2: japanese patent laid-open No. 2000-247823

Patent document 3: japanese patent laid-open No. 2003-81733

Patent document 4: japanese patent No. 5922287

Patent document 5: japanese patent laid-open No. Hei 5-65212

Patent document 6: japanese patent laid-open No. 2006-117646

Patent document 7: japanese patent laid-open No. 2001-158716

Disclosure of Invention

Problems to be solved by the invention

The present invention aims to provide a powdery composition which contains water and oil in a well-balanced manner, has a moist feeling of use and a high effect of inhibiting skin roughness, has good affinity for the moist feeling, has a powdery appearance, is liquefied when applied to the skin, is free from dry and harsh feeling, and is excellent in usability.

Means for solving the problems

The present inventors have made intensive studies to solve the above problems, and as a result, have found that a powdery composition having novel characteristics which can achieve the above object can be obtained by blending a fluorine-treated powder, an oily component which is liquid at room temperature, and a specific aqueous component, and have completed the present invention.

Namely, the present invention relates to a powdery composition comprising: (a) fluorine-treated powder, (b) an oily component which is liquid at room temperature, and (c) an aqueous component having a surface tension value of 45mN/m or more and 65mN/m or less. Further, the powdery composition of the present invention is characterized in that the amount of the component (b) is 1 to 50% by mass, and the mixing ratio of the component (b) to the component (c) is 1: 10-3: 1. in addition, the powdery composition of the present invention preferably contains substantially no surfactant.

ADVANTAGEOUS EFFECTS OF INVENTION

The powdery composition of the present invention has a powdery appearance and is liquefied when applied to the skin, and contains water and oil in a well-balanced manner, so that the powdery composition can suppress the roughness of the skin and give a good feeling of use without feeling of dryness. Further, since the cosmetic composition has sufficient water repellency and oil repellency, it can be effectively used not only for skin care but also for cosmetic compositions that are not easily removed by perspiration, sebum, or the like. Further, since the powder has a stable powder form, the powder is excellent in the manufacturing and conveying suitability.

Detailed Description

Hereinafter, each component constituting the cosmetic of the present invention will be described in detail.

(a) Fluorine-treated powder

The fluorine-treated powder (a) (hereinafter, may be referred to simply as "component (a)") used in the present invention broadly includes those having water repellency and oil repellency by imparting a fluorine group to the surface of the powder, and those having water repellency and oil repellency by including a fluorine group in the powder itself. Specific examples thereof include (i) a treated powder obtained by treating a part or all of the surface of a powder with a molecule having a fluorine group, and (ii) a polymer powder containing a fluorine group.

In the above (i), the molecule having a fluorine group is not particularly limited, and examples thereof include: perfluoroalkyl phosphate-diethanolamine salt represented by the following general formula (I), perfluoroalkylsilane represented by the following general formula (II), perfluoroalkylethyl acrylate copolymer represented by the following general formula (III), and the like.

Wherein n represents an integer of 5 to 20, and m represents 1 or 2.

C_aF_2a+1-(CH₂)_b-SiX₃(II)

Wherein a represents an integer of 1 to 12, b represents an integer of 1 to 5, and X represents a halogen atom, an alkyl group or an alkoxy group.

Wherein c represents an integer of 1 to 12, d represents an integer of 5 to 20, and Y represents an alkyl copolymer containing a polyethylene glycol, a silicone chain, an acryloyl group, or the like.

Further, compounds having a perfluoropolyether group, such as perfluoropolyether dialkyl phosphoric acid and salts thereof, perfluoropolyether dialkyl sulfuric acid and salts thereof, and perfluoropolyether dialkyl carboxylic acid and salts thereof, can also be used. The "perfluoropolyether group" is a group having at least 2 or more oxygen atoms bonded to a perfluoroalkylene group or a perfluoroalkyl group, and preferably has a molecular weight of about 300 to 7000 in terms of oil repellency and water repellency.

The method of the fluorination treatment is not particularly limited, and examples thereof include the following methods. Specifically, an aqueous solution of a fluorine compound was slowly added to an aqueous dispersion of a powder to be treated, followed by addition of an aqueous hydrochloric acid solution to adjust the aqueous dispersion to acidic, aging was performed for about 2 hours, and then, filtration, drying and pulverization were performed to obtain a fluorine-treated powder.

If the surface of the powder is treated to impart a fluorine group to the surface of the powder so as to impart water repellency and oil repellency to the surface of the powder, other non-fluorine groups, for example, an alkyl group, a polysiloxane group, or a hydrophilic group may be further added to the powder within a range not to impair the effects of the present invention.

In the present invention, before the fluorine treatment, the surface of the powder may be treated with at least 1 kind of gel selected from a hydrate of a metal hydroxide or a metal salt, a part of a dehydrated product, and an anhydrous product. By thus metal-treating and then fluorine-treating, the fluorine-treated powder can be stably and efficiently coated with a fluorine compound, and is excellent in water repellency and oil repellency. In addition, when a powder which is treated with a metal and then fluorinated is used, impact stability (impact resistance) can be remarkably improved. In addition, the adhesive properties to the skin and the like are also excellent.

The metal hydroxide or metal salt is preferably a hydroxide or salt of 1 or 2 or more metals selected from magnesium, aluminum, silicon, titanium, zinc, zirconium, and barium. In particular, it is preferable to subject the surface of the powder to an aluminum hydroxide precipitation treatment from the viewpoint of improving impact stability (impact resistance) and adhesion to the skin.

For the metal treatment of the powder surface, for example, water is added to the powder in advance to prepare a slurry, and an aqueous solution of a water-soluble compound having a strong ionic property of each of the above metals, for example, aluminum chloride, sodium aluminate, aluminum sulfate, sodium silicate, magnesium chloride, magnesium sulfate, barium chloride, zirconium chloride, titanium tetrachloride, a water-soluble organic titanium, titanyl sulfate, zinc chloride, zinc sulfate, or the like is added thereto to adsorb the compound on the powder surface. Next, an acid or an alkaline solution is added to hydrolyze or substitute these compounds adsorbed on the powder surface, thereby producing a hydrate, a partially dehydrated product, and an anhydrous product of the metal hydroxide or the metal salt.

Then, the powder whose surface has been treated with a metal is gradually added with water to prepare an emulsion, and the emulsion is broken by acid or high-temperature standing, whereby the powder covered with the hydrate of the metal hydroxide or metal salt, a part of the dehydrated product, or the anhydrous product can be further covered with the fluorine compound.

The amount of the hydrate, a part of the dehydrated product, and the anhydrous product of the metal hydroxide or the metal salt covering the powder is preferably as small as possible, and is preferably 1 to 30% by mass based on the amount of the metal compound forming them. If the amount is less than 1% by mass, the coverage of the fluorine compound is insufficient, and the water-and oil-repellency tends to be hard to be expressed, while if the amount exceeds 30% by mass, the volume tends to increase, and the original function of the powder tends to be impaired.

The fluorine compound used for the fluorine treatment is preferably 1 to 30% by mass based on the powder. If the amount is less than 1% by mass, the coverage of the fluorine compound is insufficient, and the water-and oil-repellency tends to be hard to be expressed, while if the amount exceeds 30% by mass, the volume tends to increase, and the original function of the powder tends to be impaired.

As the powder to be treated, clay mineral powder is preferably used in terms of usability (no dry and astringent feeling, no skin roughness, etc.) and stability against impact. The clay mineral powder can be used in any way, whether natural or synthetic. As the clay mineral powder, there may be mentioned: talc (hydrous magnesium silicate; 3 MgO.4SiO)₂·H₂O), kaolin (hydrous aluminum silicate; al (Al)₂O₃·2SiO₂·2H₂O), silicic anhydride (SiO)₂) Soapstone (hydrated magnesium aluminum silicate; SiO 2₂·Al₂O₃Mixture of MgO, water), sericite (microcrystalline hydrous potassium aluminum silicate; k₂O·3Al₂O₃·6SiO₂、2H₂O), mica (hydrated potassium aluminum silicate; KAl₂·AlSi₃O₁₀(OH)₂) And the like. Preferably, 1 or 2 or more clay minerals selected from talc, kaolin, silicic anhydride, saponite, sericite and mica are used. Tong (Chinese character of 'tong')By using these clay minerals, the use properties (e.g., no dry and astringent feeling, no skin roughness) can be further improved by blending the component (b) in a larger amount while maintaining the powdery form.

As the powder component to be treated, for example, a composite pigment exemplified by titanium oxide sericite obtained by coating a clay mineral with titanium oxide or the like can be used.

The shape of the powder to be treated is not particularly limited, and any shape such as a plate shape, a spherical shape, a porous shape, etc. may be used. Among them, a plate-like one is preferably used in terms of efficiently powdering the oil component with a small amount of powder.

Examples of the polymer powder represented by the above (ii) in which the powder itself contains a fluorine group include polytetrafluoroethylene powder.

In the present invention, the amount of the component (a) is preferably about 10 to 65 mass%, more preferably about 20 to 60 mass%, and still more preferably about 30 to 50 mass% with respect to the total amount of the composition. If the amount is less than 10% by mass, the liquid component cannot be powdered, and if it exceeds 65% by mass, the feeling of dryness is strongly felt, and the feeling of use is poor.

Examples of the fluorine-treated powder (a) usable in the present invention include: PF (Perfluoro compounds), PFX (Perfluoro-p-xylene), PFX (Perfluoro octyltriethoxysilane), or FHS (Perfluoro octyltriethoxysilane) -treated sericite, synthetic mica, natural mica, titanium oxide, talc, boron nitride, hydroxyapatite (plate HAP-SC, manufactured by pacific chemical industries), hydroxyapatite-coated mica (Apamicron MA10Y25S, manufactured by hydrochemical industries), titanium oxide-coated mica, barium sulfate-titanium oxide-coated mica (Low master Pigment, manufactured by Merck corporation), barium sulfate (barium sulfate HM, manufactured by platy chemical industries), titanium oxide-coated mica (timicron er Red (manufactured by Merck corporation), flamere (manufactured by BASF corporation), and the like.

When powder components other than the component (a) are contained, the blending ratio of the component (a) to the whole powder components is preferably 50 to 100% by mass.

(b) Oily component liquid at room temperature

The oily component (b) in the present invention which is liquid at room temperature (hereinafter, may be simply referred to as "component (b)") is not particularly limited, and may be used without any problem as long as it is used by users of cosmetics, quasi drugs, pharmaceuticals, or the like, and may be a mixture of 1 or 2 or more oily components.

Preferred examples of the component (b) include: liquid paraffin, ozokerite (ozokerite), squalene, pristane, paraffin, ceresin (ceresin), squalane, vaseline and other hydrocarbon oils, liquid lanolin, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesterol 12-hydroxystearate, ethylene glycol di (2-ethylhexanoate), dipentaerythritol fatty acid ester, N-alkanediol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, di (2-heptylundecanoate) glyceride, trimethylolpropane tri (2-ethylhexanoate), Trimethylolpropane triisostearate, pentaerythritol tetrakis (2-ethylhexanoate), glycerol tris (2-ethylhexanoate), cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, glyceryl tris (2-heptylundecanoate), methyl ricinoleate, oleic acid, acetyl glyceride, (2-heptylundecyl) palmitate, diisopropyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di (2-heptylundecyl) adipate, ethyl laurate, di (2-ethylhexyl) sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, Polar oil components such as ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, ethyl 2-ethylhexanoate, and the like; or higher alcohols such as stearyl alcohol, behenyl alcohol, oleyl alcohol, and cetearyl alcohol; jojoba oil, olive oil, nut oil, safflower oil, soybean oil, etc. Among these, liquid paraffin having a relatively large surface tension value and vegetable oil such as jojoba oil are particularly preferable.

Component (b) of the present invention is preferably free of solid oil such as wax (wax) from the viewpoint of a liquefied feeling when applied to the skin.

(b) The amount of the component (B) is preferably 1 to 50% by mass, more preferably 3 to 40% by mass, and still more preferably 5 to 35% by mass based on the total amount of the composition. If the amount of component (b) is less than 1 mass%, the affinity for the skin or the moisturizing effect may not be sufficiently exhibited, and the powder may be more likely to feel dry and astringent. On the other hand, if the amount exceeds 50 mass%, the feeling of greasiness is felt and the feeling of use is poor.

(c) An aqueous component having a surface tension value of 45mN/m or more and 65mN/m or less

The aqueous component (c) having a surface tension value of 45mN/m or more and 65mN/m or less (hereinafter, may be simply referred to as "component (c)") usable in the present invention means an aqueous component in which various moisturizers, drugs, and the like are dissolved in distilled water, ion-exchanged water, or purified water of a quality generally blended in cosmetics, and the surface tension value is 45mN/m or more and 65mN/m or less, preferably 47mN/m or more and 65mN/m or less. Here, the "surface tension value of the component (c)" means a value obtained by measuring the surface tension of the entire component (c) in a liquid state by the Wilhelmy plate method using a surface tension measuring apparatus DCAT (manufactured by british herbal and electronics industries). If the surface tension value of the entire component (c) satisfies the above range, the aqueous components that constitute the component (c) can be used even if they do not satisfy the above range of surface tension values.

When the surface tension value of the component (c) is less than 45mN/m, the phase is easily inverted by impact (the powder is dispersed in a liquid), and the powder is in a slurry state including air, and it is difficult to stably form the powder by the component (a). When the amount of the surfactant exceeds 65mN/m, the affinity of the composition for the skin when it is rubbed on the skin becomes poor.

(c) The amount of the component (b) is preferably 15 to 70% by mass, more preferably 15 to 65% by mass, and still more preferably 20 to 60% by mass based on the total amount of the composition. When the amount of the component (c) is less than 15% by mass, the water-wettability is lost. On the other hand, if it exceeds 70 mass%, the feeling of wetness is not preferable.

Examples of the substances to be mixed in the aqueous phase to give an appropriate surface tension include lower alcohols, polyhydric alcohols, sugar alcohols, and dimethyl ether of a polypropylene glycol/polyethylene glycol copolymer.

Examples of the lower alcohol include: ethanol, isopropanol, and the like.

Examples of the polyhydric alcohol include: glycols (e.g., propylene glycol, 1, 3-butylene glycol, etc.); trihydric alcohols (e.g., glycerin, etc.); tetrahydric alcohols (e.g., pentaerythritol such as 1,2, 6-hexanetriol); pentahydric alcohols (e.g., xylitol, etc.); polyol polymers (e.g., dipropylene glycol, triethylene glycol, polyethylene glycol, etc.), and the like. In particular, as the polyethylene glycol, polyethylene glycol having an average molecular weight of 10 ten thousand or less, specifically polyethylene glycol 400, polyethylene glycol 4000, or the like can be preferably used.

In addition, there may be mentioned: sugar alcohols (e.g., sorbitol, mannitol, etc.); polyethylene glycol derivatives (e.g., polyethylene glycol diacrylate, polyethylene glycol dioleate, polyethylene glycol diacetate, etc.); polypropylene glycol-polyethylene glycol copolymer dimethyl ether (for example, polypropylene glycol (2 mol) · polyethylene glycol (9 mol) · copolymer dimethyl ether, polypropylene glycol (7 mol) · polyethylene glycol (14 mol) · copolymer dimethyl ether, polyoxyethylene (14 mol) · polypropylene (7 mol) · random copolymer, etc.); alkyl benzoate (e.g., diethoxyethyl succinate, diethoxyethyl malonate, etc.), polyoxyethylene fatty acid glyceride (e.g., polyoxyethylene (9 mol) glyceryl propionate, polyoxyethylene (9 mol) glyceryl decanoate, etc.), dipentyl dicarboxylate (e.g., dipentyl succinate, dipentyl glutarate, etc.), etc.

(b) The mixing ratio of the component (c) to the component (1): 10-3: 1. if the blending ratio of the component (b) is too high, the feeling of greasiness is not preferable. Further, if the blending ratio of the component (c) is too high, a wet touch cannot be obtained, which is not preferable.

The powdery composition of the present invention preferably contains substantially no surfactant. The powdery composition of the present invention can contain a relatively large amount of oil component without the addition of a surfactant. When a surfactant is present in the composition, the effect of water repellency and oil repellency derived from the powder may be reduced.

Manufacturing method

The powdery composition of the present invention is prepared by a step of spraying and mixing component (b) as an oil phase with component (a) and then spraying component (c) (aqueous phase). The order of spraying the oil phase and the aqueous phase is arbitrary.

In the powder composition of the present invention, in addition to the component (a), powder or a drug which has not been subjected to fluorine treatment may be added as a powder component as it is, within a range not impairing the effect of the present invention.

Various optional components used in general cosmetic materials such as perfumes, various powders, and oil-soluble medicinal components can be blended within a range not to impair the effects of the present invention. Of these optional components, oil-soluble vitamins such as vitamin a and derivatives thereof, sterols, natural and synthetic perfumes, ultraviolet absorbers, or water-insoluble substances may be blended in the oil component, and water-soluble substances may be blended in the aqueous component.

Examples

The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to the following examples. Unless otherwise specified, the amount of the additive is represented by mass% based on the total amount.

Before the examples, the test method and the evaluation method used in the present invention will be described.

[ usability (non-dry feeling) ]

The usability (no dry and unsmooth feeling) of each of the examples and comparative examples was judged and evaluated by the following criteria from the actual use test by a functional assessor (50 persons).

(criteria for determination)

The method is remarkably effective: no dryness and astringency

The method has the following advantages: slightly dry but not problematic in use

Slightly effective: slightly dry and astringent

And (4) invalidation: obvious dryness and puckery

(evaluation)

A: more than 80% of subjects evaluated as significantly, effective, and slightly effective

B: subjects evaluated as significantly effective, and slightly effective were more than 50% and less than 80%

C: the subjects evaluated as significantly effective, and slightly effective were 30 or more and less than 50%

D: less than 30% of subjects evaluated as significantly, effective, and slightly effective

[ usability (good affinity, water wettability) ]

The usability (good affinity, water wettability) of each of the examples and comparative examples was judged and evaluated by the following criteria from the actual use test by a functional identifier (50 persons).

(criterion: good affinity)

The method is remarkably effective: has good affinity to skin

The method has the following advantages: slightly better affinity to skin

Slightly effective: not affinity to skin

And (4) invalidation: has poor affinity to skin

(determination criterion: Water-wet degree)

The method is remarkably effective: water-wet

The method has the following advantages: slightly moist

Slightly effective: less moist

And (4) invalidation: completely non-water-wet

(evaluation)

[ roughening-suppressing effect ]

The roughness-suppressing effect of each of the examples and comparative examples was determined and evaluated by the following criteria in a 3-day actual use test by a functional assessor (50 persons).

(criteria for determination)

The method is remarkably effective: the roughness is greatly suppressed

The method has the following advantages: roughness is slightly suppressed

Slightly effective: roughness is slightly suppressed but not greatly changed

And (4) invalidation: roughness variation

(evaluation)

[ Water resistance Effect ]

A base containing an ultraviolet absorber was prepared, coated on a PMMA (poly (methyl methacrylate)) plate in a fixed amount, and UV (ultraviolet) spectrum was measured. The plate was washed with water, and after 1 minute, the UV spectrum was measured to calculate the ratio of the integrated values of the spectra when the value before washing was 1.

[ measurement of surface tension value ]

The surface tension value was measured by a surface tension measuring apparatus DCAT (manufactured by engelhardson & ltd.) using a Wilhelmy plate made of platinum. When the oil phase contains a solid oil, the measurement is carried out after dissolution at 80 ℃.

[ impact resistance ]

1g of the prepared base was placed in a 30ml resin container, and the container was shaken by a paint shaker to measure the time until the base became a slurry state. The longer the time taken to reach the slurry state, the higher the impact resistance.

[ transport test ]

3g of the prepared base was put into a 30ml resin container, 10 were put into a corrugated cardboard box of about 30cm × 20cm × 10cm in a linerless state, and transported to and from tokyo-osaka by a truck. If 1 or more pieces of the slurry are formed, the slurry is rejected (defective).

(example 1, comparative examples 1 to 3)

Powdery cosmetics were prepared with the compositions shown in table 1 below. The above test methods were used to evaluate the ability to powderize each cosmetic, the usability (no dry and astringent feel, water wettability, good affinity), the water resistance, the time until slurrying (impact resistance), and the transfer test. In Table 1, "EPF MICA S" (manufactured by Dadonghuachen chemical industry Co., Ltd.) was used for the fluorine-treated MICA, "FSA-3 TiO2 CR-50" (manufactured by Dadonghuachen chemical industry Co., Ltd.) was used for the fluorine-treated synthetic titanium oxide, and "SA-Talc JA-13R" (manufactured by Sanhaohuachen chemical industry Co., Ltd.) and "SA-Talc JA-46R" (manufactured by Sanhaohuachen chemical industry Co., Ltd.) were mixed and used for the silicone-treated Talc.

[ Table 1]

	Example 1	Comparative example 1	Comparative example 2	Comparative example 3
					(1) Fluorine-treated mica	36	-	36	36
(2) Synthesis of titanium oxide by fluorine treatment	-	5	-	-
					(3) Silicone treated talc	-	31	-	-
(4) Liquid paraffin	12	12	12	8
					(5) Glycerol tris (2-ethylhexanoate) ester	6	6	6	6
(6) Microcrystalline wax	-	-	-	4
					(7) Water (W)	40	40	39	40
(8)1, 3-butanediol	6	6	6	6
					(9) Polyoxyethylene hydrogenated castor oil (60E.O)	-	-	1	-
Surface tension value (mN/m) of aqueous phase (7 to 9)	55.2	55.2	38.7	41.8
					Powdering into powder	Can be used for	Whether or not	Can be used for	Can be used for
No dry and astringent feeling	A	-	A	A
					Degree of water wettability	A	-	B	C
Good affinity	A	-	A	D
					Water resistance	98％	-	62％	94％
Time to slurry (seconds)	300～	-	20	300～
					Transport test	Good wine	-	Failure of the product	Failure of the product

(preparation method)

Mixing and dissolving (4) to (6) to obtain an oil phase, spraying the obtained oil phase onto the powders of (1) to (3), mixing and stirring the powders, further spraying the water phase obtained by mixing (7) to (9), mixing and stirring the water phase, and filling the mixture into a container.

As is clear from the results in table 1, when the silicone-treated powder was mainly blended as the component (a) (comparative example 1), the cosmetic material could not be powdered. In addition, in the case where the surface tension value of the aqueous phase was less than 45mN/m and the surfactant was contained (comparative example 2), the water resistance was low, and the evaluation of the stability as indicated by the time until the slurry was formed and the transportation test was poor. When the surface tension value of the aqueous phase is less than 45mN/m and the oil phase contains a solid oil component (comparative example 3), the transportation stability is poor, and the usability such as the water wettability and the affinity to the skin tends to be lowered. The composition of comparative example 3 was not in a slurry state in the impact resistance test, but was found to aggregate with the passage of time. On the other hand, the cosmetic material (example 1) of the present invention was sufficiently powdered, and was excellent in usability, water resistance and stability.

(examples 2 and 3, comparative examples 4 to 7)

Powdery cosmetics were prepared with the compositions shown in table 2 below. The cosmetic compositions were evaluated for usability (no dry and astringent feel, water wettability, and good affinity), roughness-suppressing effect, time to change to a slurry (impact resistance), and delivery test by the above-described test methods. The fluorine-treated Sericite in Table 2 was prepared using "PF-10 AL-10Sericite FSE" (manufactured by Dadonghuachen chemical industries, Ltd.).

[ Table 2]

(preparation method)

Mixing and dissolving (2) to (4) to obtain an oil phase, spraying the obtained oil phase to the powder of (1), mixing and stirring, further spraying the water phase obtained by mixing (5) to (9), mixing and stirring, and filling into a container.

From the results shown in Table 2, it was found that when the surface tension value of the aqueous phase was less than 45mN/m (comparative example 4), the effect of suppressing the roughness was low, the evaluation of the stability by the time until the slurry was formed and the transportation test was poor, and when the surface tension value of the aqueous phase exceeded 65mN/m (comparative example 5), the effect of suppressing the roughness and the affinity to the skin was low. Further, even if the surface tension value of the aqueous phase is 45mN/m or more and 65mN/m or less, the blending amount of the oil component (b) is small (comparative example 6), the workability is poor, and when the blending amount of the aqueous component (c) is small (comparative example 7), the degree of water wettability and good affinity are poor, and the transport stability is slightly poor. On the other hand, when the surface tension value of the aqueous phase is set to 45mN/m or more and 65mN/m or less and the blending amounts of the components (b) and (c) are adjusted to the preferable ranges, cosmetics excellent in feeling of use and stability can be obtained (examples 2 and 3).

(examples 4 and 5)

Skin care powder (example 4) and body powder for chest and neck (deconolete) (example 5) having sunscreen effect were prepared using the compositions shown in table 3 below. In Table 3, as the fluorine-treated talc and the fluorine-treated titanium oxide, a PFX-10 series (all manufactured by Dadonghuachen chemical industries Co., Ltd.) was used, in which talc and fine-particle titanium oxide were treated with aluminum hydroxide and then the surfaces thereof were treated with perfluoroalkyl phosphate sericite.

[ Table 3]

	Example 4	Example 5
			(1) Fluorine treated talc	35	40
(2) Synthesis of titanium oxide by fluorine treatment	5	-
			(3) Glycerol tris (2-ethylhexanoate) ester	10	7
(4) Octyl methoxycinnamate	5	-
			(5) Perfume	-	1
(6) Water (W)	39	47
			(7) Glycerol	5	-
(8) Polyoxyethylene (14) polylactone (7) random copolymers	1	3
			(9) Xylitol, its preparation method and use	-	2
Surface tension value (mN/m) of aqueous phase (6 to 9)	48.1	45.3
			No dry and astringent feeling	B	A
Degree of water wettability	B	A
			Good affinity	A	A
Roughness suppressing effect	A	B
			Water resistance	93％	91％

(preparation method)

Mixing and dissolving (6) to (9), spraying the obtained water phase to the powder of (1) and (2), mixing and stirring, further spraying the oil phase obtained by mixing (3) to (5), mixing and stirring, and filling into a container.

From the results shown in Table 3, it was found that the cosmetic compositions were excellent in both feeling upon use and water resistance.

(example 6)

Using the composition shown in table 4 below, a pressed powder was prepared. In Table 4, "PFX-5 titanium oxide" (manufactured by Dadonghuachen chemical industries, Ltd.) obtained by surface-treating aluminum hydroxide-treated titanium oxide with a perfluoroalkyl phosphate was used as the fluorine-treated titanium oxide.

[ Table 4]

	Example 6
		(1) Fluorine-treated synthetic mica	37
(2) Synthesis of titanium oxide by fluorine treatment	5
		(3) Fluorine-treated titanium oxide (Red)	Proper amount of
(4) Fluorine treated titanium oxide (yellow)	Proper amount of
		(5) Fluorine treated titanium oxide (Black)	Proper amount of
(6) Squalane	30
		(7) 2-Ethylhexanoic acid ethyl ester	2
(8) Water (W)	20
		(9) Succinic acid diethoxyethyl ester	1
(10) Polyethylene glycol 4000	3
		(11) Ethanol	2
Surface tension value (mN/m) of aqueous phase (8 to 11)	49.1
		No dry and astringent feeling	A
Degree of water wettability	A
		Good affinity	A
Feeling of liquefaction	Good effect
		Water resistance	95％

(preparation method)

The (6) and (7) uniformly dissolved in the uniformly mixed (1) to (5) are sprayed, mixed and stirred. The homogeneously dissolved compounds (8) to (11) were sprayed, mixed and stirred, and filled into a container.

As is clear from the results in table 4, the skin became liquid in the state of a pressed powder, and the feeling was moist and good in affinity.

Claims

1. A powdered composition comprising:

(a) fluorine-treated powder,

(b)1 to 50 mass% of an oily component which is liquid at room temperature,

(c) An aqueous component having a surface tension value of 45mN/m or more and 65mN/m or less,

and the mixing ratio of the component (b) to the component (c) is 1: 10-3: 1,

the powdered composition is liquefied by rubbing.

2. The powdered composition of claim 1, wherein ingredient (b) is free of solid oil.

3. The powdered composition of claim 1, which is substantially free of surfactant.

4. The powder composition according to any one of claims 1 to 3, wherein the powder of component (a) is 1 or 2 or more selected from talc, kaolin, silicic anhydride, saponite, sericite, and mica.

5. The powdery composition according to any one of claims 1 to 4, which contains the component (a) in an amount of 10 to 65% by mass.

6. The powdery composition according to any one of claims 1 to 5, which contains 15 to 70 mass% of the component (c).

7. A method of making the powdered composition of claim 1, comprising:

spraying component (b) onto component (a) and spraying component (c) onto the powder prepared in the step; or

Spraying component (c) onto component (a), and spraying component (b) onto the powder prepared in the above-mentioned step.