JP2002188024A - Surface-coated powder and cosmetic containing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface-coated powder capable of preventing a coating material which coats surfaces of the powder from being eluted in a dispersion medium, having excellent hydrophobicity, and having good dispersibility and stability, and to provide a cosmetic to which the powder is added. SOLUTION: This surface-coated powder is given by coating the surfaces with a fructooligosacchride ester of fatty acid. The cosmetic contains the powder of which the surfaces are coated with the fructooligosacchride ester of fatty acid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a surface-coated powder. More specifically, the present invention relates to a hydrophobic surface-coated powder suitable for compounding into a cosmetic and a cosmetic containing the surface-coated powder.

[0002]

2. Description of the Related Art Various powders such as inorganic powders and organic powders are blended in cosmetics. These powders are coated with various surface coating agents depending on the purpose. As one of them, a surface coating treatment for making a powder hydrophobic is performed for the purpose of improving wettability and dispersibility with an oil agent component and improving adhesion to skin. For example, surface coating treatment with a surfactant such as a cationic surfactant and an anionic surfactant, and surface coating treatment with a silicone oil such as methyl hydrogen polysiloxane are known. However, when the powder surface-coated with a surfactant is blended into a cosmetic, the surface treating agent may be eluted in the blended oil, and the hydrophobicity is insufficient. The powder coated with methyl hydrogen polysiloxane is
There is a problem that unreacted hydrogen may be desorbed over time to generate hydrogen gas. Surface-coated powder with dextrin fatty acid partial ester (JP-B-5-3844)
Has been proposed, but the hydrophobicity is not sufficient.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has solved the problems of a surface-coated powder with a surfactant and a surface-coated powder with a silicone oil. Without dissolving in a dispersion medium, having excellent hydrophobicity, dispersibility, and providing a surface-coated powder having good stability, and a cosmetic composition containing the surface-coated powder. Aim.

[0004]

Means for Solving the Problems The applicant of the present invention has proposed that a fructooligosaccharide fatty acid ester is first blended into a cosmetic as it is as an oil agent, a gelling agent, an emulsifier, etc., and that the moist feeling of the cosmetic is improved by this blending. It has been proposed to make it better (Japanese Patent Laid-Open No. 3-197409). We have:
At this time, we found that fructooligosaccharide fatty acid esters are not only insoluble in water and hard to dissolve in oils, but also have the property of being easily adsorbed on the surface of powder, and are excellent as surface coating agents that impart hydrophobicity to powder. Thus, the present invention has been completed.

[0005] That is, the present invention is a surface-coated powder characterized in that the surface is coated with a fructooligosaccharide fatty acid ester. The present invention is also a cosmetic comprising a powder whose surface is coated with fructooligosaccharide fatty acid ether.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the fructooligosaccharide fatty acid ester used in the present invention, the hydrogen atom of the hydroxyl group of the fructooligosaccharide is a group RCO- (where R is a linear or branched alkyl or alkenyl group having 7 to 31 carbon atoms). Is a compound substituted with The degree of substitution is preferably one in which one to three fructooligosaccharides are substituted on average per monosaccharide unit. The fructooligosaccharide fatty acid ester is produced, for example, by reacting a fructooligosaccharide with a fatty acid represented by the formula RCOOH (where R is as defined above) or a reactive derivative thereof.

[0007] Fructooligosaccharides, which are raw materials for fructooligosaccharide fatty acid esters, are oligosaccharides containing fructose as a main constituent sugar. Fructooligosaccharides are used in various plants,
For example, roots, rhizomes, stems of Asteraceae, Gramineae and Lily,
It is contained in leaves, seeds, etc., and has two types of structures, the main chain having a 2 → 1 bond and the 2 → 6 bond. Examples of the 2 → 1 bond include fructooligosaccharides such as inulin, asparagosin, asphoderan, tritican, and kritezan, and fructooligosaccharides derived from Bacmondou are also used. Examples of the 2 → 6 bond include fructooligosaccharides such as flane, levan, and seracan. The fructooligosaccharide may be hydrolyzed by an enzyme or the like, and has an average molecular weight of 30.
A molecular weight range from 0 to 10,000 is preferred. Further, among fructooligosaccharides, inulin and hydrolyzed inulin are preferable.

The fatty acids to be reacted with fructooligosaccharides are
It is a linear or branched saturated or unsaturated fatty acid having 8 to 32 carbon atoms, and among them, one having 8 to 22 carbon atoms is preferable.
Specifically, octanoic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachiic acid,
Examples include behenic acid, oleic acid, 2-ethylhexanoic acid, isomyristic acid, isopalmitic acid, isostearic acid, and isooleic acid. In addition, examples of the reactive derivatives of these fatty acids include acid halides and acid anhydrides.

The reaction of the fructooligosaccharide with the fatty acid represented by the formula RCOOH (where R is as defined above) or a reactive derivative thereof can be easily carried out by a conventionally known method. For example, it can be obtained by dispersing fructooligosaccharides in dimethylformamide and pyridine and reacting at about 60 ° C. At this time, the average degree of substitution of the fatty acid can be controlled by appropriately adjusting the amount of the fatty acid, the fatty acid halide or the fatty acid anhydride, the reaction time, and the reaction temperature. Further, the fructooligosaccharide fatty acid ester of the present invention can be obtained in a solid to paste or liquid form having a white to brown hue depending on the reaction conditions and the like.If necessary, a conventionally known decoloring method, for example, activated carbon, By treating with zeolite or the like, it can be easily purified to white.

[0010] The fructooligosaccharide fatty acid ester used in the present invention is insoluble in water, hardly soluble in oils, and has a property of being easily adsorbed on the surface of powder. Therefore, the powder coated with the fructooligosaccharide fatty acid ester has sufficient hydrophobicity, good dispersibility in oil components, and is stable when blended into cosmetics, and the surface coating agent elutes into the cosmetics. Never do. The cosmetic containing the fructooligosaccharide fatty acid ester surface-coated powder has excellent adhesion to the skin, has a smooth feel, is excellent in usability, and has good persistence of makeup.

The powder to be coated in the present invention may be any of those usually used in cosmetics, such as its shape (spherical, needle-like, plate-like, etc.) and particle size (haze, fine particles, pigment grade). Etc.) and any particle structure (porous, non-porous, etc.) can be used. For example, as inorganic powder, titanium oxide, zirconium oxide, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, synthetic mica, mica, kaolin, sericite, Muscovite, synthetic mica, phlogopite, phlogopite, biotite, lithia mica, silicic acid, silicic anhydride, aluminum silicate,
Magnesium silicate, aluminum magnesium silicate, calcium silicate, barium silicate, strontium silicate, metal tungstate, hydroxyapatite, vermiculite, heidilite, bentonite,
Montmorillonite, hectorite, zeolite, ceramic powder, dibasic calcium phosphate, alumina, aluminum hydroxide, boron nitride, and the like.

Examples of the organic powder include polyamide, polyester, polyethylene, polypropylene, polystyrene, polyurethane, benzoguanamine, polymethylbenzoguanamine, polytetrafluoroethylene, polymethyl methacrylate, cellulose, silk, nylon 6
6, 12 nylon, 6 nylon, styrene / acrylic acid copolymer, divinylbenzene / styrene copolymer, vinyl resin, urea resin, phenol resin, fluororesin, silicone resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin Resin powder, microcrystalline fiber powder, rice starch, lauroyl lysine and the like. As the surfactant metal salt powder (metal soap), zinc stearate, aluminum stearate,
Calcium stearate, magnesium stearate,
Zinc myristate, magnesium myristate, zinc cetyl phosphate, calcium cetyl phosphate, sodium zinc cetyl phosphate, and the like.

Examples of the colored pigments include inorganic red pigments such as iron oxide, iron hydroxide, and iron titanate; inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as yellow iron oxide and loess; Inorganic black pigments such as iron and carbon black; inorganic purple pigments such as manganese violet and cobalt violet; inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide, and cobalt titanate; and inorganic blue pigments such as navy blue and ultramarine blue; Examples thereof include those in which tar-based dyes are raked, those in which natural dyes are raked, and composite powders in which these powders are composited. Examples of the pearl pigment include titanium oxide-coated mica, titanium oxide-coated mica, bismuth oxychloride, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, fish scale foil, and titanium oxide-coated colored mica.

Examples of the metal powder pigments include aluminum powder, copper powder, and stainless steel powder. Examples of tar pigments include Red No. 3, Red No. 104,
Red No. 106, Red No. 201, Red No. 202, Red No. 20
4, Red 205, Red 220, Red 226, Red 227, Red 228, Red 230, Red 401
No., Red No. 505, Yellow No. 4, Yellow No. 5, Yellow 202
No. Yellow No. 203, Yellow No. 204, Yellow No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3
No., Green No. 201, Green No. 204, Green No. 205, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 206
No. 207 and orange No. 207. As a natural pigment,
Carminic acid, raccaic acid, calsamine, bradylin,
Crocin and the like. These powders may be composite powders or powders that have been surface-treated with a surfactant, oil, silicone, or fluorine compound.

A method for coating the surface of a powder with a fructooligosaccharide fatty acid ester will be described. For this coating, it is possible to use an ordinary well-known powder coating technology regardless of a wet method or a dry method. Specifically, a treatment method by fluidized bed coating, a surface coating treatment method by mechanochemical, a surface coating treatment method by high-speed stirring and mixing, or
Examples thereof include a method in which a fructooligosaccharide fatty acid ester is dissolved in a solvent, a powder is added to form a slurry, and the slurry is heated under reduced pressure to distill off the solvent.

The solvent used herein is not particularly limited as long as the fructooligosaccharide fatty acid ester can be dissolved or uniformly dispersed. Examples thereof include aromatic hydrocarbons such as benzene, toluene and xylene, and ketones such as methyl ethyl ketone and methyl isobutyl ketone. , Ethyl acetate, esters such as butyl acetate, isoparaffin, n-hexane, cyclohexane, chloroform, isopropanol, ethanol, methanol, and volatile silicone oils such as decamethylcyclopentasiloxane.
These can be used alone or in combination of two or more.

In addition, at the time of coating, other than fructooligosaccharide fatty acid ester, the effect of the present invention is not impaired.
Plasticizers, surfactants, oils and the like can be used. In the coated powder of the present invention, the ratio between the powder and the fructooligosaccharide fatty acid ester is expressed by mass ratio, that is, powder: fructooligosaccharide fatty acid ester = 99.5: 0.5 to 7
0:30 is preferred, and 99: 1 to 85:15 is particularly preferred.

The amount of the coated powder of the present invention in the cosmetic is
It is appropriately selected in the range of 0.001 to 100% by mass. For example, in the case of powder cosmetics such as powdery or solid forms, 1 to 10
The amount is preferably 0% by mass, and in the case of an oil-in-water or water-in-oil type emulsified cosmetic, the amount is preferably 0.001 to 40% by mass.

The powder coated with the fructolide sugar fatty acid ester of the present invention exhibits good dispersibility in oils commonly used in cosmetics.
It is preferable to use an ester oil, a glyceride oil or the like because of excellent dispersibility. Examples of the silicone oil include dimethylpolysiloxane, cyclic silicone, methylphenylpolysiloxane, methylhydrogenpolysiloxane, higher fatty acid-modified organopolysiloxane, higher alcohol-modified organopolysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane. .

Examples of the ester oils include diisobutyl adipate, 2-hexyldecyl adipate, and di-adipate.
2-heptylundecyl, alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, neopentyl glycol di-2-ethylhexanoate Trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, oleyl oleate, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, Triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyl acetate, isocetyl stearate, butyl stearate, diisopropyl sebacate, sebacic Di-2-ethylhexyl, cetyl lactate, myristyl lactate, isopropyl palmitate,
2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate,
Cholesteryl 12-hydroxystearylate, dipentaerythritol fatty acid ester, isopropyl myristate, 2-octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, N -Lauroyl-L-glutamic acid-2-octyldodecyl ester, diisostearyl malate and the like.

Examples of the glyceride oil include acetoglyceryl, glyceryl triisooctanoate, glyceryl triisostearate, glyceryl triisopalmitate, glyceryl tri-2-ethylhexanoate, glyceryl monostearate, glyceryl di-2-heptylundecanoate, Glyceryl trimyristate, diglyceryl isostearate, and the like can be mentioned. One or more of these are arbitrarily selected and used.

The cosmetic of the present invention comprises, in addition to the coated powder,
Commonly used components such as humectants, preservatives, antioxidants, ultraviolet absorbers, cosmetic ingredients, fragrances, water-soluble polymers, extender pigments, coloring pigments, glitter pigments, organic powders, hydrophobic pigments, tar Dyes and the like can be added as long as the effects of the present invention are not impaired.

The cosmetics containing the fructooligosaccharide fatty acid ester-coated powder of the present invention include, for example, cleansing agents, body soaps, hand soaps, detergents such as face wash, oil solubilized type lotions, emulsions, creams, massages Ingredients, hand creams, lip balms, antiperspirants, deodorants, suncare products such as sunscreen emulsions and sunscreen creams, skincare cosmetics, powdered white powder, powder foundation, liquid and oily foundations, makeup bases, blushers, Makeup cosmetics such as eye shadow, mascara, eyeliner, eyebrow, lipstick, etc., and hair cosmetics such as shampoo, rinse, treatment, hair emulsion, hair cream, hair mascara, tic, etc. The dosage form can be selected from various forms such as powder, press, liquid, emulsion, solid, paste, gel, and spray.

[0024]

EXAMPLES AND COMPARATIVE EXAMPLES The following shows examples of the synthesis of fructooligosaccharide fatty acid esters. Synthesis Example 1 Bacmondou-derived fructooligosaccharide powder 10.8 g
Dimethylformamide (500 g) was added thereto, and the mixture was dissolved by stirring at 60 ° C. 16 g of pyridine was added thereto, and 60.5 g of stearoyl chloride was added dropwise with stirring. After reacting for 2 hours, the pyridine salt was separated by filtration and dimethylformamide was distilled off. Toluene was added to the residue for extraction, and the solvent was distilled off after drying with borate. The residue was washed with methanol and 40 g of fructooligosaccharide stearic acid ester derived from Bacmondou
I got The average degree of substitution of the fatty acid of this fructooligosaccharide stearic acid ester (indicating the number of molecules of the fatty acid added per monosaccharide unit) was 2.8 (calculated from the saponification value, the same applies hereinafter).

Synthesis Example 2 The same operation as in Synthesis Example 1 was carried out except that inulin lymph was used instead of Bacmondou's fructooligosaccharide powder, to obtain 55 g of inulin stearic acid ester. The average degree of substitution of fatty acids in this product was 2.7. Synthesis Example 3 Dimethylformamide 2 in 16.2 g of canine powder
00 g and 30 g of pyridine were added and dissolved at 60 ° C. with stirring. To this, add stearoyl chloride 91 while stirring.
g was added dropwise, and after 5 hours of reaction, it was poured into 1 L of purified water to precipitate a solid. This was separated by filtration, and the residue was washed with methanol to obtain 57 g of inulin stearic acid ester.
The fatty acid average substitution degree of this product was 2.8.

Synthesis Example 4 The same operation as in Synthesis Example 3 was carried out except that 60 g of stearoyl chloride was used, and 45 g of inulin stearic acid ester was obtained.
I got The average degree of substitution of fatty acids in this product was 1.3. Synthesis Example 5 200 g of dimethylformamide and 30 g of pyridine were added to 16.2 g of hydrolyzed canine powder and dissolved at 60 ° C. with stirring. The palmitoyl chloride (30.5 g) and 2-ethylhexanoyl chloride (32.5 g) were added dropwise, and the mixture was reacted for 5 hours. The mixture was extracted with n-hexane, dried with bowing nitrate, and the solvent was distilled off. The residue was washed with methanol to obtain inulin (palmitic acid / 2-ethylhexanoic acid) ester 42 g. The average degree of substitution of fatty acids in this product was 2.5.

Next, a production example of the surface-coated powder will be described. Example 1 In 150 g of chloroform, 7 g of fructooligosaccharide stearate derived from Bacmondou obtained in Synthesis Example 1 is dissolved. Next, 93 g of fine titanium oxide particles (the average particle diameter of the fine titanium oxide particles was 50 nm) was added, and the mixture was dispersed by a disper. Then, the mixture was poured into a vat and allowed to warm to remove chloroform. Thereafter, the resultant was pulverized to obtain Bacmondou-derived fructooligosaccharide stearic acid ester-coated fine particle titanium oxide powder.

Example 2 The procedure of Example 1 was repeated, except that the inulin stearic acid ester obtained in Synthesis Example 2 was used instead of the fructooligosaccharide stearic acid ester derived from Bacmondou, to thereby oxidize the fine particles coated with inulin stearic acid ester. A titanium powder was obtained. Example 3 To 150 g of isoparaffin, 5 g of the inulin stearate obtained in Synthesis Example 2 was added and mixed and dissolved at 70 ° C. Next, 95 g of titanium oxide powder (the average particle size of the titanium oxide powder was 350 nm) was added, and the mixture was dispersed with a disper, followed by reducing the pressure while stirring to remove isoparaffin. Thereafter, pulverization was performed to obtain an inulin stearic acid ester surface-coated titanium oxide powder.

Example 4 The procedure of Example 3 was repeated, except that yellow iron oxide powder was used instead of titanium oxide powder, to obtain inulin stearic acid ester surface-coated yellow iron oxide powder. Example 5 The same operation as in Example 3 was carried out except that bengara powder was used instead of titanium oxide powder, to obtain inulin stearic acid ester surface-coated bengala powder. Example 6 The same operation as in Example 3 was carried out except that black iron oxide powder was used instead of titanium oxide powder, to obtain inulin stearic acid ester surface-coated black iron oxide powder. Example 7 The same operation as in Example 3 was carried out except that sericite powder was used instead of titanium oxide powder, to obtain inulin stearic acid ester surface-coated sericite powder.

Example 8 5 g of the inulin stearate obtained in Synthesis Example 3 is dissolved in 100 g of isopropanol. Next, 20 g of mica, 10 g of talc, 10 g of nylon powder, 2 g of Red No. 226, and 3 g of red beaker were added and dispersed with a disper, then poured into a vat, and heated and left to remove isopropanol. Thereafter, the mixture was pulverized to obtain a mixed powder of inulin stearic acid ester surface coating. Example 9 Inulin stearic acid ester 10 obtained in Synthesis Example 4
g and 90 g of fine particle titanium oxide were mixed in an automatic mortar for 2 hours to obtain inulin stearic acid ester surface-coated fine particle titanium oxide powder.

Example 10 To 100 g of isoparaffin, 2.5 g of the hydrolyzed inulin (palmitic acid / 2-ethylhexanoic acid) ester obtained in Synthesis Example 5 was added and mixed and dissolved at 70 ° C. Next, 30 g of Red No. 104 (1), 10 g of Red No. 201, 5 g of titanium oxide, and 0.5 g of black iron oxide were added, and dispersed with a disper.
The pressure was reduced while stirring to remove isoparaffin. Thereafter, the mixture was ground to obtain a mixed powder of inulin (palmitic acid / 2-ethylhexanoic acid) ester surface coating. Example 11 3 g of the inulin stearate obtained in Synthesis Example 2 was dissolved in 150 g of chloroform. Then talc 97
After adding g and dispersing with a desper, pour into the bat,
The chloroform was removed by heating. Then, it was pulverized to obtain talc powder coated with inulin stearic acid ester surface.

Example 12 5 g of inulin stearic acid ester obtained in Synthesis Example 2
And 95 g of sericite were mixed by a hybridizer (Nara Machinery Co., Ltd.) to obtain inulin stearic acid ester surface-coated sericite powder. Example 13 Inulin stearic acid ester 5 obtained in Synthesis Example 2
g, liquid paraffin 0.5 g, squalane 0.5 g and fine particle titanium oxide (average particle size of the fine particle titanium oxide 5
95 g of the mixture was mixed with a hybridizer (Nara Machinery Co., Ltd.) to obtain fine particles of titanium oxide powder coated with inulin stearic acid ester surface.

Comparative Example 1 The same operation as in Example 1 was carried out except that dextrin palmitic acid ester (Leopearl KL, manufactured by Chiba Flour Milling Co., Ltd.) was used instead of the fructooligosaccharide stearic acid ester derived from Bacmondou, and the surface of dextrin palmitic acid ester was used. A coated particulate titanium oxide powder was obtained. Comparative Example 2 In 150 g of chloroform, methyl hydrogen polysiloxane (Silicon KF99P manufactured by Shin-Etsu Chemical Co., Ltd.) 7
Dissolve g. Next, 93 g of finely divided titanium oxide was added and dispersed by a disper, then poured into a vat, and left to warm to remove chloroform. Thereafter, the mixture was heated at 120 ° C. for 2 hours and pulverized to obtain a particulate titanium oxide powder coated with methyl hydrogen polysiloxane surface.

The surface coating powders of Examples 1 and 2 and Comparative Examples 1 and 2 were examined for dispersibility, hydrophobicity and stability.
Table 1 shows the results. The evaluation was performed according to the following evaluation methods and evaluation criteria.

[Evaluation Method and Evaluation Criteria of Dispersibility] 1 g of the coated powder of each of Examples 1 and 2 and Comparative Examples 1 and 2 was dispersed in 100 g of decamethylcyclopentasiloxane, and the powder dispersion was left for 2 hours. Was observed and evaluated according to the following criteria. ：: Cloudy and powder dispersed. Δ: Part of the powder settled, and a transparent layer was observed in the upper layer of the dispersion. ×: The powder has completely settled.

[Method for Evaluating Hydrophobicity and Evaluation Criteria] The surface-coated powders of Examples 1 and 2 and Comparative Examples 1 and 2 immediately after production were pressed on a metal plate, and water droplets (water temperature: 20 ° C.) were dropped on the pressed surface. The contact angle immediately after that was measured with a goniometer-type contact angle measuring device manufactured by Elma. In addition, the surface-coated powders of Examples 1 and 2 and Comparative Examples 1 and 2 which were stored at 40 ° C. for one month after production were pressed on a metal plate, and water drops (water temperature of 20 ° C.) were dropped on the pressed surface. It was measured by a goniometer-type contact angle measuring device manufactured by Elma. In the above measurement, those having a contact angle of 90 ° or less have poor hydrophobicity, and those having a contact angle of more than 90 ° have excellent hydrophobicity.

[Evaluation Method and Evaluation Criteria of Stability] Examples 1 to 2 were mixed in a mixed solution of 50 g of purified water and 50 g of ethanol.
Each of the coated powders of Comparative Examples 1 and 2 was added and dispersed, and the state after being left in a closed container at 40 ° C. for one month was observed. ：: Gas generation was not confirmed. ×: Generation of gas is confirmed.

[0038]

[Table 1]

[Evaluation] As apparent from Table 1, the fine particle titanium oxide coated with the fructooligosaccharide fatty acid ester of the present invention has excellent dispersibility, a large contact angle with water, excellent hydrophobicity, and stability. It was excellent. On the other hand, the fine particle titanium oxide surface-coated with the dextrin palmitic acid ester of Comparative Example 1 has a remarkably small contact angle with water and poor hydrophobicity. Further, the fine particle titanium oxide surface-coated with methyl hydrogen polysiloxane of Comparative Example 2 has poor dispersibility and stability.

Next, examples of cosmetics will be described. Examples 14 to 15 and Comparative Examples 3 to 5: Water-in-oil emulsified suncut emulsions having the composition shown in Table 2 were produced. In addition, the usability, usability, dispersibility, and stability of each were examined. Table 2 also shows the results.

[0041]

[Table 2]

(Manufacturing method) A: Components 1 to 5 are heated and dissolved, and components 6 to 11 are added and uniformly dispersed. B: Components 12 to 16 are uniformly mixed and dispersed. C: B is added to A and emulsified. D: C was filled in a container to obtain a water-in-oil emulsion type suncut emulsion.

The evaluations in Table 2 were performed according to the following evaluation methods and evaluation criteria. (1) Evaluation of Usability and Usability Each of the water-in-oil emulsified suncut emulsions of Examples 14 to 15 and Comparative Examples 3 to 5 was used as a panel 20 specialized in sensory evaluation of cosmetics.
They were used for their names, and they were evaluated according to the following criteria for spreading to the skin, natural finish, and long-lasting makeup at the time of use, and were judged from the average score of all panels. [Evaluation criteria] Rating: Evaluation result 5 points: Excellent 4 points: Good 3 points: Normal 2 points: Slightly poor 1 point: Poor [Judgment criteria] Judgment: Average score of all panels ○: 4 or more Δ: 2 or more to less than 4 ×: less than 2

(2) Evaluation of Dispersibility In the sun-cut emulsion, if the dispersibility of the fine particle titanium oxide is poor, the ultraviolet ray shielding effect is low, and if the dispersibility is high, the ultraviolet ray shielding effect is high. Therefore, in this evaluation, the ultraviolet shielding effect was used as an index of dispersibility. Each of the water-in-oil emulsified suncut emulsions of Examples 14 to 15 and Comparative Examples 3 to 5 was applied to a quartz glass plate at 50 mg per 50 cm ² , dried, and then applied to SPF290-ANALYZER (Optometrics). In vitro, the SPF value (index of ultraviolet shielding effect) was measured in vitro. (3) Evaluation of stability The water-in-oil emulsified suncut emulsions of Examples 14 to 15 and Comparative Examples 3 to 5 were observed after being left at 40 ° C for one month. ：: Gas generation is not confirmed ×: Gas generation is confirmed

[Evaluation] As is clear from the results in Table 2,
The water-in-oil emulsified suncut emulsions of Examples 14 to 15 containing the fructooligosaccharide fatty acid ester surface-coated fine particles of titanium oxide powder of Examples 1 and 2 which are the products of the present invention spread to the skin during use and naturally It was excellent in all items such as excellent finish, makeup persistence, dispersibility (ultraviolet ray shielding effect) and stability. On the other hand, in Comparative Example 3 in which the dextrin palmitic acid ester surface-coated fine particle titanium oxide powder of Comparative Example 1 was blended, the cosmetic had a natural finish, was poor in persistence of makeup, and was poor in dispersibility (UV blocking effect). In Comparative Example 4 in which the titanium oxide powder coated with the methylhydrogenpolysiloxane surface of Comparative Example 2 was blended, Spread on the skin during use, natural finish, long-lasting makeup,
Poor in dispersibility (UV shielding effect) and stability.
Comparative Example 5 in which the fructooligosaccharide fatty acid ester and the fine particle titanium oxide powder were blended without coating treatment was inferior in spread to the skin during use, natural finish, long-lasting makeup, and dispersibility (UV blocking effect). Was.

Example 16 Powder Foundation Ingredient Mass% 1. 1. Surface-coated titanium oxide powder of Example 3 12 2. Surface-coated yellow iron oxide powder of Example 4 2.9 3. Surface-coated red iron powder of Example 5 0.94. 4. Surface-coated black iron oxide powder of Example 6 0.4 5. Surface-coated sericite powder of Example 7 40 6. Talc remaining amount Dimethylpolysiloxane (100 cs) 8 8.2 Cetyl ethylhexanoate 2 9 9. Methyl paraoxybenzoate 0.2 Appropriate amount of fragrance

(Production method) A: Components 7 to 10 are mixed uniformly. B: Components 1 to 6 are mixed and dispersed. C: Add A to B, mix and disperse, and pulverize. D: C was press-molded on a metal plate to obtain a powder foundation. The powder foundation of the present invention was excellent in all items of spread to the skin during use, natural finish, long-lasting makeup, and stability.

Example 17 Oily Eyeshadow Ingredient Mass% 1. Candelilla wax 5 2. Microcrystalline wax 5 3. Beeswax 5 4. Glyceryl trioctanoate 10 5. Liquid paraffin balance 6. Pentaerythritol rosinate 3 7 7. Octamethylcyclotetrasiloxane 20 8. Surface-coated mixed powder of Example 8 35 Moisturizer appropriate amount 10. Appropriate amount of fragrance

(Production method) A: Components 1 to 6 are dissolved by heating. B: Components 7 to 10 are added to A and uniformly mixed and dispersed. C: B was filled in a metal dish at 80 ° C., and solidified by cooling to obtain an oily eyeshadow. The oil-based eyeshadow of the present invention was excellent in all items of spread to the skin during use, natural finish, long-lasting makeup, and stability.

Example 18 Oil-in-water emulsified cosmetic suncut base material Ingredients% by mass Stearic acid 1 2. Cetanol 0.5 3. 3. Polyoxyethylene sorbitan monooleate 0.5 Sorbitan sesquioleate 15 Dimethyl polysiloxane 5 6. Glyceryl trioctanoate 10 7.1 1,3-butylene glycol 10 8 Glycerin 3 9. Carboxyvinyl polymer 0.15 10. Triethanolamine 0.15 11. Methyl parahydroxybenzoate qs. 12. Purified water balance 13. Surface-coated sericite powder of Example 12 3 14. Surface-coated fine particle titanium oxide powder of Example 9 215. 15. Surface-coated titanium oxide powder of Example 3 1 Appropriate amount of fragrance

(Production method) A: Components 1 to 6 are dissolved by heating, and then components 13 to 15 are added and dispersed by a despar. B: Components 7 to 12 are dissolved by heating. C: Add A to B and emulsify. D: Component 16 was added to C to obtain an oil-in-water emulsion type cosmetic suncut base. The oil-in-water emulsified cosmetic suncut base of the present invention spreads over the skin when used, has an excellent natural finish, and provides a feeling of adhesion when a foundation is applied thereon, a beautiful finish, long-lasting makeup, and UV cut The effect was excellent.

Example 19 Lipstick Ingredient Mass% 1. Paraffin wax 12 2. Lanolin wax 12 3. Candelilla wax 3 4. Kaolin 10 5. Castor oil remaining 6. 6. Dimethyl polysiloxane (6cs) 10 Glyceryl trioctanoate 2.5 8. 8. Surface-coated mixed powder of Example 10 7 Appropriate amount of fragrance

(Production method) A: Components 1 to 7 are dissolved by heating. B: Components 8 to 9 are added to A and mixed and dispersed uniformly. C: B was heated and melted at 80 ° C. and filled into a capsule to obtain a lipstick. The lipstick stick of the present invention spreads and spreads well on the skin during use, and is excellent in all aspects of beauty of the finish and long-lasting makeup.

Example 20 Eyeliner Component Weight% 1. Beeswax 5 2． Cetanol 0.5 3. Stearic acid 14. Sorbitan sesquioleate 0.55. 5. Polyoxyethylene sorbitan monooleate 1 Lecithin 0.1 7. Glyceryl trioctanoate 2 8 8. Surface-coated black iron oxide powder of Example 6 9. Surface-coated titanium oxide powder of Example 3 0.5 Triethanolamine 1 11.1,3-butylene glycol 7 12. 12. Vinyl acetate emulsion polymer 10 13. methyl paraoxybenzoate appropriate amount Purified water balance 15. Appropriate amount of fragrance

(Manufacturing method) A: Components 1 to 7 are heated and dissolved, and components 8 to 9 are added and mixed uniformly. B: Components 10 to 15 are uniformly mixed. C: B is added to A and emulsified. D: C After cooling, the container was filled to obtain an eyeliner. The eyeliner of the present invention was easy to draw light and uniform lines when used, and was also excellent in makeup.

Example 21 White Powder Ingredients Mass% 1. Surface-coated sericite powder of Example 7 25 2. Surface-coated pigment-grade titanium oxide powder of Example 3 3. Surface-coated fine particle titanium oxide powder of Example 13 2 4. Surface-coated talc powder of Example 11 Boron nitride 10 6. Organomethylpolysiloxane elastomer powder 2 7 7. Siliconized silicic anhydride 0.2 Perfluoropolyether 3 9 Dimethyl polysiloxane (10cs) 3

(Production method) A: A part of the component 4 and the components 8 to 9 are uniformly mixed. B: Components 1 to 3 and the rest of component 4, components 5 to 7 and A were uniformly mixed and pulverized to obtain a white powder. The powdered white powder of the present invention had a smooth and good feel when used, had less powder flying, and had good cosmetic durability.

[0058]

The surface-coated powder of the present invention has extremely excellent hydrophobicity, is highly dispersible in oily components, and has good stability. Therefore, the cosmetic containing the surface-coated powder of the present invention has a smooth feel, is excellent in adhesion to the skin, is excellent in usability, is rich in hydrophobicity, and has good cosmetic durability.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A61K 7/48 A61K 7/48 F-term (Reference) 4C083 AA122 AB152 AB172 AB232 AB242 AB432 AB442 AC022 AC072 AC102 AC122 AC242 AC352 AC422 AC442 AC482 AC542 AC792 AC812 AC842 AC862 AD072 AD092 AD152 AD172 AD211 AD212 BB25 CC01 CC12 CC14 CC19 DD11 DD21 DD33 EE01 EE03 4J037 CB10 CC02 EE03 FF15

Claims (2)

[Claims] 1. A surface-coated powder characterized in that the surface is coated with a fructooligosaccharide fatty acid ester. 2. A cosmetic comprising a powder whose surface is coated with fructooligosaccharide fatty acid ether.